Melamine Resin Coated APP
| HS Code | 353165 |
| Flammability | Reduced flammability due to APP's flame - retardant nature and melamine resin coating enhancing performance |
| Mechanical Strength | Improved mechanical strength, melamine resin provides hardness and APP contributes to integrity |
| Chemical Resistance | Good chemical resistance, can withstand many common chemicals |
| Thermal Stability | Enhanced thermal stability, can endure higher temperatures without significant degradation |
| Adhesion | Good adhesion properties, can bond well to various substrates |
| Abrasion Resistance | Relatively high abrasion resistance, suitable for applications with friction |
| Water Resistance | Water - resistant, melamine resin helps prevent water absorption |
| Color Retention | Good color retention, maintains color under normal use and light exposure |
| Electrical Insulation | Good electrical insulating properties |
| Dimensional Stability | High dimensional stability, maintains shape under different environmental conditions |
As an accredited Melamine Resin Coated APP factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Melamine Resin Coated APP in 25 - kg bags for secure storage and transport. |
| Storage | Melamine Resin Coated APP (ammonium polyphosphate) should be stored in a cool, dry place. Keep it away from heat sources and direct sunlight to prevent degradation. Store in a well - ventilated area, avoiding contact with incompatible substances. Use sealed containers to protect from moisture, which could affect its chemical properties and performance. |
| Shipping | Melamine Resin Coated APP is shipped in well - sealed containers to prevent exposure. Due to its chemical nature, it follows strict regulations, with careful handling to avoid damage during transit to ensure safe delivery. |
Competitive Melamine Resin Coated APP prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Historical Development
The APP of melamine resin coating can be traced back to the 1950s, when science and technology were new and chemical industry advanced. At first, it was a building material guard board, with rough craftsmanship and limited texture, but it was born in response to demand. Then European and American countries dedicated themselves to research and development to improve the substrate and coating methods, and then created new products with water resistance, heat resistance and bright color, which are widely used in interior wall panels and furniture finishes. In the 1990s, East Asian countries also introduced its system, and the industrial standards gradually became more complete, and the environmental protection performance became more and more prominent. In the new century, the mutual fusion of carriers, nano-fillers, and modification processes improved its hardness and durability. Today's melamine resin coating APP, both beautiful and sturdy, has a wide range of application fields, and has become an important part of modern decorative materials.
Product Overview
This product is made of modified melamine resin coated ammonium phosphate salt, white color, good fluidity, uniform particle size. Its stability, heat resistance and flame retardant effect is excellent. Compared with conventional ammonium phosphate salt, water solubility is greatly reduced, it is not easy to agglomerate in case of moisture, and it is easy to store and transport. Applied to plastics, rubber, fabrics and building materials, it can improve the flame retardant performance of products, and is compatible with a variety of substrates, with low addition and significant effect. Adapt to the strict requirements of modern industry for environmental protection and safety, and is widely respected by the industry.
Physical & Chemical Properties
Melamine Resin Coated APP is fine in quality, plain white in color, slightly gray with gray shadow, uniform in particles, and smooth to the touch. Slightly soluble in water, insoluble in sudden heat, resistant to high temperature, very high melting point. Tough but not easy to break, no obvious deformation under pressure. Its chemical properties are stable, soluble in acid and alkali solutions, not easy to decompose, non-flammable in case of fire, and excellent self-extinguishing. If used in combination with polymer resins, there is no severe reaction. Its hygroscopicity is low, and its behavior is constant at room temperature and humidity. And because it is covered with melamine resin to isolate the body from contact with the environment, its flame retardancy and durability are better than those of monomer APP. It does not change color for a long time under light and room temperature storage, and has little volatility and odor. It is often used in flame retardant materials with stable performance and long-term use.
Technical Specifications & Labeling
Melamine Resin Coated APP, its quality is pure white or nearly white, the shape is like a fine powder, and it is slightly shiny. The particle size is fine, the average particle size is between 35-45 microns, and the sieve residue is less than 1%. The phosphorus content is as high as 28%, the nitrogen content is about 17%, and the thermal decomposition temperature is often above 300 ° C. It releases phosphorus when decomposing, and self-extinguishes in case of fire. The moisture absorption rate is less than 0.2%, the solubility in water is very little, and the consistency is good. The packaging is mostly woven bags or composite paper bags, lined with plastic film, and the net weight of each bag is 25 kg. The transportation must be moisture-proof, pressure-proof, and stored in a cool and dry place. Each batch of products has a batch number, production date, and manufacturer's logo. The parameters are indicated in the outsourcing for traceability and identification.
Preparation Method
Melamine and urea were mainly used, ammonium phosphate was supplemented, and an appropriate amount of deionized water was used as the solvent. First, ammonium phosphate was stirred and dissolved at a moderate temperature, and then melamine and urea were slowly added. The temperature was controlled at medium and low to make the mixing uniform. Then the temperature was raised to make the reaction solution gradually transparent. During this period, a formaldehyde solution was added dropwise to promote condensation. A weak acidic buffer system was used to adjust the pH, so that melamine molecules were oligomerized with ammonium phosphate, and an amino resin film was formed on the surface. After the reaction was completed, the coating product was precipitated at a lower temperature, centrifuged, washed with water, and dried after removing impurities. Temperature control and mixing uniformly throughout the process are essential. The catalytic mechanism lies in the synergy between the condensation rate of melamine and the coating of ammonium phosphate, and the modified flame retardant polymer coating material is finally obtained. It has excellent performance and can be used in many fields.
Chemical Reactions & Modifications
Ammonium polyphosphate coated with melamine resin is formed by condensation reaction with ammonium polyphosphate as the core and melamine-formaldehyde resin as the shell. The method uses melamine and formaldehyde to copolymerize at a moderate temperature to form a cross-linked network resin, and then the resin is uniformly coated on the surface of ammonium polyphosphate by emulsion polymerization. After coating, the water resistance of ammonium polyphosphate is greatly increased, the surface is hydrophobic, and the thermal decomposition temperature is also increased. The resin shell is carbonized at high temperature to block external heat and oxygen, slow down APP decomposition, and improve its compatibility and dispersion in the material. Such modified products are widely used in flame retardant materials, giving them better physical and chemical properties.
Synonyms & Product Names
Melamine Resin Coated APP is a common chemical used in the industry. Its synonyms, or melamine resin-coated APP, or melamine-wrapped ammonium aminophosphate, are all named after materials and processes. There are many trade names in the city, some are called film-coated APP, some are named laminated APP, or the English abbreviation MR-APP. Its characteristics are known as flame retardant, which is commonly used in plastics, rubber, coatings and other industries to improve fire safety. There are also companies with unique product titles, such as "Anhuo Rong", "Fumeilong", "Shield Solid Flame Retardant", etc. Although the names are different, they all refer to the ammonium phosphate salt of such melamine resin composite. In trade or technical literature, many names are used in parallel, each of which varies according to its production method, ratio, and use. However, they all belong to the same class of flame retardant additives.
Safety & Operational Standards
This product is made of ammonium phosphate coated with melamine resin, which is strong and fire-resistant. It is widely used in the manufacture of various non-flammable materials. However, its chemical properties are unique, and the operation must be cautious. Where storing this product, you must first choose a dry and ventilated place, away from the hot sun and high temperature, to prevent moisture damage. When opening and opening, you must wear a mask, gloves and protective clothing. It is strictly forbidden to touch the skin directly, and you must not inhale its dust. After each use, the mouth of the bag must be sealed and tied to prevent leakage. If there is any leakage, it should be wiped with a dry cleaner immediately. Do not spray it with water to mix it, so as to avoid inappropriate reactions with other objects.
During transportation, make sure that the packaging is firm, light and unloaded to prevent damage. It must not be loaded with acids, alkalis and oils to prevent impurity pollution. In daily operation, special personnel should be set up to supervise, with clear rules and follow step by step. Do not use it on open fires, electric fires or hot topic sources to prevent danger. If the product is damp and agglomerated, it should not be smashed with iron objects, and it should be discarded according to regulations and not included in the production process. After the operation, you should clean your hands with warm water, take off the working utensils, and place them in a special place. If the utensils are not damaged, they should be replaced if they are found damaged, and they cannot be used.
If there is a sudden accident, such as accidental touch or ingestion, you should rinse or rinse your mouth with water as soon as possible, and immediately report to medical treatment without delay. If the fire alarm rises, use dry powder and carbon dioxide to extinguish the fire, and it is not advisable to attack with water. Waste and packaging materials should be centrally disposed of in accordance with local environmental regulations, and should not be abandoned in ditch fields. All workshops that use this product must regularly train craftsmen, and teach safety regulations, so that everyone is aware of the norms, consciously abide by them, and few people will suffer. Therefore, be careful at the beginning and strictly observe the end, so as to ensure personal safety and character.
During transportation, make sure that the packaging is firm, light and unloaded to prevent damage. It must not be loaded with acids, alkalis and oils to prevent impurity pollution. In daily operation, special personnel should be set up to supervise, with clear rules and follow step by step. Do not use it on open fires, electric fires or hot topic sources to prevent danger. If the product is damp and agglomerated, it should not be smashed with iron objects, and it should be discarded according to regulations and not included in the production process. After the operation, you should clean your hands with warm water, take off the working utensils, and place them in a special place. If the utensils are not damaged, they should be replaced if they are found damaged, and they cannot be used.
If there is a sudden accident, such as accidental touch or ingestion, you should rinse or rinse your mouth with water as soon as possible, and immediately report to medical treatment without delay. If the fire alarm rises, use dry powder and carbon dioxide to extinguish the fire, and it is not advisable to attack with water. Waste and packaging materials should be centrally disposed of in accordance with local environmental regulations, and should not be abandoned in ditch fields. All workshops that use this product must regularly train craftsmen, and teach safety regulations, so that everyone is aware of the norms, consciously abide by them, and few people will suffer. Therefore, be careful at the beginning and strictly observe the end, so as to ensure personal safety and character.
Application Area
Ammonium phosphate coated with melamine resin is strong and stable, and it is not easy to prolong ignition in case of fire. Its high temperature resistance and water intrusion resistance are widely used in the production of fireproof materials. Today's building construction, subway tunnels, ship vehicle interiors, or home appliances, electronic circuit boards all rely on its fireproof function. It can also be applied to polymer composite materials, coatings, adhesives to increase its flame retardant properties. Cable coating, wood treatment, also choose this material to enhance safety. Building exterior walls, partition boards, ceiling panels, soft furniture, engineering plastics can be added to prevent fires and reduce smoke. Its wide application field is an indispensable material for modern industry and fire safety.
Research & Development
Research and development are related to the refinement of skills, and the ammonium polyphosphate (APP) coated with melamine resin has been seen in recent times. At the beginning, chemical engineers studied the mechanism of smoke suppression and flame retardancy, and learned from others. Coincidentally, the characteristics of melamine resin and ammonium polyphosphate are moisture-proof and heat-resistant, which is beneficial to strengthen the binding of materials. Between experiments, the type of resin is prepared, the temperature is high, the coating thickness is analyzed, and the service period performance and cost are both excellent. When it comes to the finished product, it is environmentally friendly, long-lasting and impermeable, and safe for a long time. It is widely used in the field of building materials and plastics. Since then, we have been committed to introducing new ones and gradually perfecting them. However, do not forget to monitor stability, trace the source, in order to consider its safety and environmental protection, so that it is beneficial to the world.
Toxicity Research
Melamine Resin Coated APP, that is, ammonium polyphosphate coated with melamine resin, has been widely used in the preparation of flame retardant materials in recent years. However, its toxicity should be investigated in detail. According to the melamine resin, which is a polymer, it is stable at room temperature. However, in case of high temperature or acid-base conditions, or there is a concern of decomposition, free melamine and trace formaldehyde are precipitated, which are all hidden dangers. Excessive intake of melamine can cause kidney lesions, formation of stones, and even kidney nipple necrosis, and obvious renal damage is seen in experimental animals. Formaldehyde is recognized as a sensitizing and carcinogenic substance. Although the release amount is limited, it cannot be ignored. In addition, ammonium polyphosphate itself is less toxic, but the overall safety after coating depends on the long-term release of the product. Overall analysis shows that Melamine Resin Coated APP is highly safe in routine applications, but in extreme environments, its potential toxicity cannot be ignored. The relevant use must comply with safety regulations to prevent health risks caused by long-term or high-dose exposure.
Future Prospects
Melamine Resin Coated APP is the leader of new chemical materials. This year's innovation is new, the technology is advanced, and the preparation process is becoming more and more perfect. With high flame retardancy, heat resistance, low phosphorus release, and moderate water solubility, it is widely suitable for plastics and coatings, especially the trend of green and low carbon. Looking forward to the future, the needs of the people will increase, and the demand for high-performance flame retardants in many industries will increase. Scientific research and repair will introduce intelligent preparation, optimize the uniformity and stability of resin coating, and give better performance. In addition, its morphology and particle size can be adjusted to adapt to new material applications. As environmental regulations become increasingly stringent, Melamine Resin Coated APP will surely follow this trend, open up new paths for the blending of bio-based raw materials, and promote material safety and sustainable use. If it is done, it can be expected that it will open a new chapter for the world's flame retardant cause, supplement the green environment, and benefit the population and society.
Where to Buy Melamine Resin Coated APP in China?
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Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Melamine Resin Coated APP supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
What are the main uses of Melamine Resin Coated APP?
The APP of melamine resin coating is a treasure of modern craftsmanship, and it has a wide range of uses. Today, I will briefly describe its main points. Melamine resin, a high-grade polymer for chemical synthesis, has a strong texture, heat resistance and corrosion resistance, and can resist acid and alkali corrosion. APP, short for ammonium phosphate salt, is one of the flame retardant materials. Coating its surface with melamine resin, it has the benefits of both, and is used in a variety of industries to show endless wonders.
First seen in the field of building materials, the APP of coating is widely used in the surface of floors, wall panels, and furniture panels. Melamine resin film is smooth in color, elegant in texture, moisture-proof, anti-fouling, and wear-resistant, so it is transferred to indoor finishes, which are both beautiful and practical, suitable for various public places and home environments. Its heat resistance is excellent, and it is often used in high-temperature and humid places such as kitchen countertops. And its flame retardant properties are suitable for public buildings and transportation facilities to ensure the safety of people and property.
Secondly, the electronics industry also takes advantage of its advantages. The coated APP has excellent insulation performance and is used in the manufacture of insulating boards, circuit boards, shells, etc. Due to its aging resistance, oxidation resistance, and durability as new, it can prolong the life of the device and reduce the maintenance effort. And because of its strong chemical resistance, it is mostly the choice for the lining of chemical equipment and the coating of anti-corrosion containers.
The packaging industry also uses this material. Melamine resin is applied to the surface of cardboard and decorative paper, which can not only prevent moisture and mildew, but also increase its firmness and appearance. For food and pharmaceutical packaging, it is especially superior, which not only keeps it clean, but also inhibits the growth of bacteria. In addition, the production of transportation vehicles, ships, and aviation supplies also uses laminated APP to improve quality.
Looking at the above industries, the APP coated with melamine resin has many advantages such as flame retardancy, wear resistance, corrosion resistance, insulation, and aesthetics. It is one of the great advances in contemporary material science. Its function is far beyond that of traditional materials of yesteryear.
First seen in the field of building materials, the APP of coating is widely used in the surface of floors, wall panels, and furniture panels. Melamine resin film is smooth in color, elegant in texture, moisture-proof, anti-fouling, and wear-resistant, so it is transferred to indoor finishes, which are both beautiful and practical, suitable for various public places and home environments. Its heat resistance is excellent, and it is often used in high-temperature and humid places such as kitchen countertops. And its flame retardant properties are suitable for public buildings and transportation facilities to ensure the safety of people and property.
Secondly, the electronics industry also takes advantage of its advantages. The coated APP has excellent insulation performance and is used in the manufacture of insulating boards, circuit boards, shells, etc. Due to its aging resistance, oxidation resistance, and durability as new, it can prolong the life of the device and reduce the maintenance effort. And because of its strong chemical resistance, it is mostly the choice for the lining of chemical equipment and the coating of anti-corrosion containers.
The packaging industry also uses this material. Melamine resin is applied to the surface of cardboard and decorative paper, which can not only prevent moisture and mildew, but also increase its firmness and appearance. For food and pharmaceutical packaging, it is especially superior, which not only keeps it clean, but also inhibits the growth of bacteria. In addition, the production of transportation vehicles, ships, and aviation supplies also uses laminated APP to improve quality.
Looking at the above industries, the APP coated with melamine resin has many advantages such as flame retardancy, wear resistance, corrosion resistance, insulation, and aesthetics. It is one of the great advances in contemporary material science. Its function is far beyond that of traditional materials of yesteryear.
How is the fire resistance of Melamine Resin Coated APP?
Melamine Resin Coated APP is an ammonium phosphate salt coated with melamine resin, which is widely used in the field of fire protection today. Its properties are firm, high temperature resistance, and it decomposes non-combustible gases in case of fire, which can stop the spread of fire. The shell layer of melamine resin makes its surface dense, enhances its inertness, greatly reduces water solubility, and improves its stability. Its products are mixed with organic matter, and under high flame temperature, APP first releases phosphorus elements to generate phosphorus trioxide. When encountering carbonaceous materials, it promotes the formation of carbon, which interacts with melamine to form a porous expanded carbon layer, which is thick and strong and blocks oxygen. The flame is difficult to penetrate, so the delay engine is blocked, the combustion speed is significantly slowed down, and the emission of smoke and harmful gases is also reduced.
In a variety of tests, its oxygen index is as high as 30 or more, far exceeding that of conventional polymer materials. Even in the case of violent fire sources, the carbon layer can expand several times instantaneously, isolating high temperature from the invasion of the substrate, and preserving the integrity of the structure. Even in a high-humidity environment, the melamine coating can resist water erosion, inhibit the dissolution and loss of APP, and ensure its fire protection for a long time. Compared with pure APP and uncoated flame retardants, it has stronger stability, resistance to migration, aging resistance, and excellent adaptability.
It is shared with polymer materials, especially suitable for polyolefins, polyesters, etc., and has the advantages of low smoke, low toxicity, and green environmental protection. Building cables, rail vehicles, and building boards can be introduced as much as possible to enhance fire protection and ensure safety. Even if the fire is fierce, it is difficult to cause harm.
In summary, Melamine Resin Coated APP has outstanding fire protection performance, as well as thermal stability, hydrolysis resistance, and low migration. It is indeed the leader of high-performance fire protection materials. Its status in contemporary fire protection technology is becoming increasingly important, and its application is wide and effective.
In a variety of tests, its oxygen index is as high as 30 or more, far exceeding that of conventional polymer materials. Even in the case of violent fire sources, the carbon layer can expand several times instantaneously, isolating high temperature from the invasion of the substrate, and preserving the integrity of the structure. Even in a high-humidity environment, the melamine coating can resist water erosion, inhibit the dissolution and loss of APP, and ensure its fire protection for a long time. Compared with pure APP and uncoated flame retardants, it has stronger stability, resistance to migration, aging resistance, and excellent adaptability.
It is shared with polymer materials, especially suitable for polyolefins, polyesters, etc., and has the advantages of low smoke, low toxicity, and green environmental protection. Building cables, rail vehicles, and building boards can be introduced as much as possible to enhance fire protection and ensure safety. Even if the fire is fierce, it is difficult to cause harm.
In summary, Melamine Resin Coated APP has outstanding fire protection performance, as well as thermal stability, hydrolysis resistance, and low migration. It is indeed the leader of high-performance fire protection materials. Its status in contemporary fire protection technology is becoming increasingly important, and its application is wide and effective.
What are the storage conditions for Melamine Resin Coated APP?
Melamine Resin Coated APP is actually one of the chemical agents with stable properties and wide range of uses. However, if its storage conditions are not observed, it is easy to damage its quality and weaken its function. The way of storage should be discussed in detail as follows:
1. Choose a well-ventilated place to avoid moisture erosion. If moisture invades, the substance is easy to agglomerate and its chemical properties may vary. It is the first priority to be dry. It should be stored in an environment with a relative humidity of not more than 50% to prevent mildew and change.
2. Keep away from open flames and heat sources. It may decompose in case of high temperature, generating harmful gases, and it is also afraid of igniting fire as a disaster. Therefore, it should be stored in a cool place, the temperature is preferably at room temperature, not higher than 30 degrees Celsius, especially avoid direct sunlight.
Third, it should be stored in a closed container. Choose a moisture-proof and corrosion-proof container and seal it properly so that fresh air and moisture cannot penetrate to prevent moisture absorption and agglomeration, or impurities and discoloration, to ensure that its pure essence remains unchanged. When storing and transporting, it should also be avoided to store with toxic, harmful and strong acids, strong alkalis and other substances to prevent chemical reactions.
Fourth, the management is orderly and the identification is clear. The storage office should be marked to indicate the name of the stored product, batch number and storage time, which is convenient for rotation. If it takes a long time, it is advisable to check its performance before using it. When handling and storing, it should also be handled smoothly and lightly to prevent impact, so as to avoid damage to the packaging and leakage of objects.
Fifth, properly prevent insect and mouse infestation, regularly inspect the warehouse, and dispose of it immediately if there is any abnormality, so as to ensure that the product is intact.
In short, Melamine Resin Coated APP storage needs to focus on the details, and strive to prevent moisture, heat, fire, and pollution. It is safe in its place and will not deteriorate. It can ensure its function and meet the needs of industry and commerce.
1. Choose a well-ventilated place to avoid moisture erosion. If moisture invades, the substance is easy to agglomerate and its chemical properties may vary. It is the first priority to be dry. It should be stored in an environment with a relative humidity of not more than 50% to prevent mildew and change.
2. Keep away from open flames and heat sources. It may decompose in case of high temperature, generating harmful gases, and it is also afraid of igniting fire as a disaster. Therefore, it should be stored in a cool place, the temperature is preferably at room temperature, not higher than 30 degrees Celsius, especially avoid direct sunlight.
Third, it should be stored in a closed container. Choose a moisture-proof and corrosion-proof container and seal it properly so that fresh air and moisture cannot penetrate to prevent moisture absorption and agglomeration, or impurities and discoloration, to ensure that its pure essence remains unchanged. When storing and transporting, it should also be avoided to store with toxic, harmful and strong acids, strong alkalis and other substances to prevent chemical reactions.
Fourth, the management is orderly and the identification is clear. The storage office should be marked to indicate the name of the stored product, batch number and storage time, which is convenient for rotation. If it takes a long time, it is advisable to check its performance before using it. When handling and storing, it should also be handled smoothly and lightly to prevent impact, so as to avoid damage to the packaging and leakage of objects.
Fifth, properly prevent insect and mouse infestation, regularly inspect the warehouse, and dispose of it immediately if there is any abnormality, so as to ensure that the product is intact.
In short, Melamine Resin Coated APP storage needs to focus on the details, and strive to prevent moisture, heat, fire, and pollution. It is safe in its place and will not deteriorate. It can ensure its function and meet the needs of industry and commerce.
What are the precautions when using the Melamine Resin Coated APP?
Melamine Resin Coated APP, that is, melamine resin-coated ammonium polyphosphate, has different properties and is often white powder. It is applied to flame retardant materials and has endless uses. However, when applying it, it must be carefully reviewed to ensure its effectiveness. The following precautions are mentioned:
First of all, store it to avoid moisture and prevent moisture. Although the cover melamine resin has excellent coating properties, it is easy to cause deterioration of the coating layer due to excessive moisture, leakage of ammonium phosphate, and damage to performance. It should be placed in a dry and ventilated place, sealed storage, and should not be exposed to hot sun and corrosive gases. Secondly, when mixing, it should be uniform and do not stir in a hurry. If it is shared with organic resins, add it slowly to make it evenly distributed. Do not cause agglomeration due to improper stirring, which affects the flame retardant effect.
Also, the compatibility must be cautious. Melamine resin has limited acid and alkali resistance, and it is easy to decompose in case of strong acid and alkali, which affects its stability. If the prepared system contains free acid and alkali, it should be tested first to check its compatibility. The amount of addition should also be appropriate, neither too much, which will affect the mechanical and physical properties of the product, nor too little, which will damage its flame retardant effect. If used in combination with other additives, it is also necessary to pay attention to its chemical changes, so as not to cause adverse reactions.
During processing, the temperature should be moderate. High temperature is easy to crack the coating layer, which will reduce the performance. The processing temperature depends on the resin matrix, and it needs to be tested in advance to avoid loss of degree. The construction area should be clean and do not mix with sundries to prevent quality damage. If there is dust flying, it is advisable to wear masks and gloves to prevent inhalation and damage to human health.
After using containers and tools, they must be cleaned as soon as possible to prevent the residue from accumulating and breeding safety hazards. If it has not been used for a long time, it is advisable to regularly test its performance to confirm that its effect has not been reduced before continuing to use it. In case of abnormal changes, stop using it immediately to check the cause. It is necessary to be careful and strict. In this way, the function of Melamine Resin Coated APP can be perfected, and the product can last for a long time.
First of all, store it to avoid moisture and prevent moisture. Although the cover melamine resin has excellent coating properties, it is easy to cause deterioration of the coating layer due to excessive moisture, leakage of ammonium phosphate, and damage to performance. It should be placed in a dry and ventilated place, sealed storage, and should not be exposed to hot sun and corrosive gases. Secondly, when mixing, it should be uniform and do not stir in a hurry. If it is shared with organic resins, add it slowly to make it evenly distributed. Do not cause agglomeration due to improper stirring, which affects the flame retardant effect.
Also, the compatibility must be cautious. Melamine resin has limited acid and alkali resistance, and it is easy to decompose in case of strong acid and alkali, which affects its stability. If the prepared system contains free acid and alkali, it should be tested first to check its compatibility. The amount of addition should also be appropriate, neither too much, which will affect the mechanical and physical properties of the product, nor too little, which will damage its flame retardant effect. If used in combination with other additives, it is also necessary to pay attention to its chemical changes, so as not to cause adverse reactions.
During processing, the temperature should be moderate. High temperature is easy to crack the coating layer, which will reduce the performance. The processing temperature depends on the resin matrix, and it needs to be tested in advance to avoid loss of degree. The construction area should be clean and do not mix with sundries to prevent quality damage. If there is dust flying, it is advisable to wear masks and gloves to prevent inhalation and damage to human health.
After using containers and tools, they must be cleaned as soon as possible to prevent the residue from accumulating and breeding safety hazards. If it has not been used for a long time, it is advisable to regularly test its performance to confirm that its effect has not been reduced before continuing to use it. In case of abnormal changes, stop using it immediately to check the cause. It is necessary to be careful and strict. In this way, the function of Melamine Resin Coated APP can be perfected, and the product can last for a long time.
What are the advantages of Melamine Resin Coated APP compared to uncoated APP?
Ammonium polyphosphate (APP) is a commonly used inorganic flame retardant and is widely used in the field of polymer materials. However, exposed APP often has disadvantages such as poor dispersion, strong hygroscopicity, and poor compatibility with the matrix. Nowadays, APP coated with melamine-formaldehyde resin (Melamine Resin) has many advantages over those not coated.
First, coating can greatly improve the dispersion of APP. Bare APP is easy to agglomerate due to its large surface polarity, resulting in uneven distribution in the polymer substrate, which in turn affects the flame retardant effect. After being coated with resin, a dense film is formed on the surface, which not only effectively prevents the particles from agglomerating with each other, but also improves the uniformity in the matrix, which greatly increases the flame retardant efficiency.
Second, it can significantly reduce the hygroscopicity of APP. APP is hydrophilic by nature, and if the ambient humidity is slightly higher, it is easy to absorb water and agglomerate, which affects storage and use. If it is coated with melamine resin, the resin layer has good hydrophobicity and can isolate water contact, making it difficult to absorb moisture in humid environments, ensuring stable performance.
Third, improve the compatibility between APP and polymer matrix. The polarity of bare APP is very different from that of most organic resins, which is easy to cause interfacial delamination and damage the mechanical properties of materials. Coated with melamine resin, its surface polarity is moderate, which can not only combine with inorganic flame retardant particles, but also be well compatible with the organic matrix, so that the flame retardant and the resin can be combined more tightly, and the material properties are better.
Fourth, the coating layer can slow down the decomposition of APP under high temperature conditions, delay the release of catalytic effect, help form a denser carbon layer, and improve flame retardant efficiency. Melamine resin itself also has flame retardant properties, and works synergistically with APP to have both heat insulation and flame retardant effects.
In addition, melamine resin coating can also improve the appearance and feel of flame retardant products, reduce dust flying, and reduce the health hazards caused by particle exposure during production. In summary, Melamine Resin Coated APP is better in terms of dispersion, moisture absorption, compatibility, and flame retardancy than uncoated APP, which is a good strategy for improving the performance of polymer flame retardant materials.
First, coating can greatly improve the dispersion of APP. Bare APP is easy to agglomerate due to its large surface polarity, resulting in uneven distribution in the polymer substrate, which in turn affects the flame retardant effect. After being coated with resin, a dense film is formed on the surface, which not only effectively prevents the particles from agglomerating with each other, but also improves the uniformity in the matrix, which greatly increases the flame retardant efficiency.
Second, it can significantly reduce the hygroscopicity of APP. APP is hydrophilic by nature, and if the ambient humidity is slightly higher, it is easy to absorb water and agglomerate, which affects storage and use. If it is coated with melamine resin, the resin layer has good hydrophobicity and can isolate water contact, making it difficult to absorb moisture in humid environments, ensuring stable performance.
Third, improve the compatibility between APP and polymer matrix. The polarity of bare APP is very different from that of most organic resins, which is easy to cause interfacial delamination and damage the mechanical properties of materials. Coated with melamine resin, its surface polarity is moderate, which can not only combine with inorganic flame retardant particles, but also be well compatible with the organic matrix, so that the flame retardant and the resin can be combined more tightly, and the material properties are better.
Fourth, the coating layer can slow down the decomposition of APP under high temperature conditions, delay the release of catalytic effect, help form a denser carbon layer, and improve flame retardant efficiency. Melamine resin itself also has flame retardant properties, and works synergistically with APP to have both heat insulation and flame retardant effects.
In addition, melamine resin coating can also improve the appearance and feel of flame retardant products, reduce dust flying, and reduce the health hazards caused by particle exposure during production. In summary, Melamine Resin Coated APP is better in terms of dispersion, moisture absorption, compatibility, and flame retardancy than uncoated APP, which is a good strategy for improving the performance of polymer flame retardant materials.
