Halogen Free Flame Retardant for Flexible PU Foam
| HS Code | 195218 |
| Flammability | Meets flame - retardant standards without halogens |
| Chemical Composition | Non - halogen - based flame - retardant ingredients |
| Flexibility | Maintains flexibility of flexible PU foam |
| Thermal Stability | Good thermal stability during foam processing |
| Odor | Low - odor or odor - free |
| Environmental Friendliness | Environmentally friendly, halogen - free |
| Compatibility | High compatibility with flexible PU foam components |
| Aging Resistance | Enhanced aging resistance of the foam |
| Processing Ease | Easy to process during foam production |
As an accredited Halogen Free Flame Retardant for Flexible PU Foam factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 5 - kg bags of Halogen - Free Flame Retardant for Flexible PU Foam packaging. |
| Storage | **Storage for Halogen - Free Flame Retardant for Flexible PU Foam** Store this chemical in a cool, dry place, away from direct sunlight and heat sources. Keep it in a well - ventilated area to prevent the build - up of fumes. Ensure containers are tightly sealed to avoid moisture absorption or contamination. Store it separately from incompatible substances like strong oxidizers. |
| Shipping | Halogen - Free Flame Retardant for Flexible PU Foam is shipped in sealed, corrosion - resistant containers. Shipment is via reliable freight carriers, ensuring proper handling to prevent damage during transit. |
Competitive Halogen Free Flame Retardant for Flexible PU Foam 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.
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Historical Development
Halogen flame retardants originated at the end of the 19th century, but based on the principle of halogen, they were widely used in various polymer materials. By the middle of the 20th century, the rise of polyurethane flexible foam made the demand for flame retardancy increasingly apparent. Halogen flame retardants were used immediately, but they burned toxic fumes, damaged the well-being of human beings, and hindered environmental protection plans. Then scholars studied halogen-free flame retardant techniques, starting with phosphorus, nitrogen, minerals and other compounds, and tried many new ones, gradually seeking to replace halogen categories. In the new century, technology was improving day by day. Halogen-free flame retardants were first applied to flexible polyurethane foams with high efficiency, low toxicity and environmental friendliness, taking into account flame retardancy and comfort. In response to the needs of the times, green development has taken precedence and promoted industrial reform, thus becoming one of the major events in the historical development of flame retardants.
Product Overview
This product is halogen-free flame retardant, dedicated to flexible polyurethane foam. Its mild, good compatibility, applied to the foam material, can effectively improve the flame retardant performance, inhibit the spread of flame. Halogen-free formula, reduce the release of harmful gases and corrosive smoke, in line with the general trend of green environmental protection. The addition amount is small and the effect is significant, does not affect the physical properties of the foam body, softness and elasticity coexist. Can be widely used in furniture, automobiles, mattresses and other fields. Production and use of simple, safe and worry-free, help enterprises to improve product safety level, to meet domestic and foreign flame retardant standards. Market trends, broad prospects, to promote the innovation of flame retardant materials and protect the safety of human settlements to provide a powerful choice.
Physical & Chemical Properties
It is also a physical property. Its shape is a halogen-free flame retardant, with a white color, fine and even particles, and it is slightly moist to the touch, not sick or astringent. The smell is elegant, and there is no pungent smell. It is slightly soluble in water, resistant to acid and alkali but not easy to solve, and it shows its persistence when exposed to high temperature. High melting point, difficult to spontaneous combustion, neither fire support nor smoke. Placed in flexible polyurethane foam, it has good dispersion and can bond with the substrate. The product is as flexible as ever, and the flame retardant performance is greatly improved. Its chemical properties are mild, insoluble in common solvents, and compatible with most resins, non-corrosive. Light-resistant, oxidation-resistant, long-term storage and properties are not easy. In case of fire and heat, it can release smoke-suppressing and flame-retardant substances, allowing the foam layer to form charcoal and delay the fire. It is a material widely used for safety needs, and it is praised for its excellent properties.
Technical Specifications & Labeling
This flexible polyurethane foam is a halogen-free flame retardant. The color is mostly white or light gray powder. The properties are uniform, and it does not contain halogens. Heavy metals and harmful impurities are slightly absent. The main components are phosphorus and nitrogen organic compounds, which dissolve slowly in water and have good dispersibility. The particle size is about 40 microns, which is suitable for a variety of foam systems. The flame retardant index reaches UL94 V-0 rank, and the oxygen index is greater than 28. It complies with ROHS and REACH specifications. The recommended amount of addition depends on the demand of the foam. The common range is 6 to 12 percent. The product has high thermal stability and is not easy to decompose at 200 degrees Celsius. Non-toxic gases are released when decomposed. The packaging is mainly composed of composite bags, with a net weight of 25 kg per bag. Store between dry and cool, and The surface marking details the batch, specification and production date for traceability and quality verification.
Preparation Method
In terms of the halogen-free flame retardant preparation method of flexible polyurethane foam, phosphorus and nitrogen are often used as main materials, phosphate ester, quaternary amine salt, or melamine derivative are taken, supplemented by polyol is dissolved, and mixed evenly in a constant temperature stirrer. Then isocyanate is added dropwise to react at a suitable temperature to generate a flame retardant mother liquor. The flame retardant mother liquor is blended with polyether polyol and isocyanate, and the polymerization reaction is initiated by catalysts such as organotin and tertiary amine. The catalytic mechanism is the addition of isocyanate and polyol, and the flame retardant components are uniformly precipitated into the foam structure to enhance the formation of carbon layer and isolate oxygen source and heat flow, so it can effectively improve the flame retardancy of the foam.
Chemical Reactions & Modifications
Polyurethane foam is light and soft, but it is flammable in case of fire and causes great damage. Nowadays, there are halogen-free flame retardants, which are used in flexible polyurethane foam. The principle is that phosphorus and nitrogen are the core. When heated and burned, it can chemically react with the polyurethane matrix under high temperature, release active free radicals, inhibit chain combustion reactions; and promote the formation of carbonization protective film on the surface of the foam to cut off the transfer of oxygen and heat sources. In addition, the flame retardant reacts with the hydroxyl and isocyanate groups of the polyurethane prepolymer group to form a stable covalent bond, which allows the molecular structure of the foam to be encrypted, and the thermal stability and smoke suppression properties are increased. The modification of Si has its advantages, which are undefeated by harmful halogens, compatible with environmental protection requirements, and used to protect people's safety and benefit sustainable development.
Synonyms & Product Names
Synonymous, or halogen-free flame retardant, or halogen-free refractory, all refer to a chemical used to give flexible polyurethane foam flame retardant properties. Merchants are trending due to the market, or Halogen Free Flame Retardant for Flexible PU Foam, or named Eco-Flame PU, halogen-free foam guard, green shield flame retardant, PuritySafe PU defends its title, all with its halogen-free properties to protect the safety of foam. Also known as Zero-Halogen PU Retardant, SafeFlex Foam Retardant, etc., advertise safety and environmental protection, and protect human settlements. Although the names are different, they refer to the same thing, all of which are used for flexible PU foam to add flame retardant. The market is full of different names and is unique. They all follow the path of halogen-free environmental protection, which is in line with the needs of the times. This synonym is probably the same as the product name.
Safety & Operational Standards
Halogen flameless flame retardants are used in flexible polyurethane foam. They are mild in nature and have significant function. However, when operating, be careful and follow the specifications. First, place in a cool and dry place, away from direct sunlight and high humidity, and do not approach fire sources to prevent thickness and deterioration. When opened and used, it is advisable to wear gloves, masks and goggles, and do not make direct contact with the skin. If it is accidentally splashed in the eyes and nostrils, rinse with water urgently. If it is serious, seek medical attention immediately. When blending, the utensils should be clean. Check that there are no foreign objects included first, and the measurement must be accurate. There is no risk of floating and overflowing. When dispensing glue or mixing, slow down first and then rush, stir slowly, and do not let the gas fly. The place is well ventilated to prevent gas accumulation, and it is strictly forbidden to smoke and burn incense. After the operation is completed, the residual material should be in accordance with the environmental protection law, sealed and special capacity, and temporarily stored in zones, and should not be mixed with other things. After the tools are used up, clean them well to prevent the remaining inner walls from causing reactions. In case of leakage, immediately wipe them with special adsorption materials. The waste is recycled and disposed of according to the guidelines, and cannot be discarded in water and soil. During transportation, the packaging is tight, shockproof and moisture-proof, and warehoused according to the rules, and the registration is clear. Be sure to keep food, feed, and drinking water far away to prevent accidents. Daily inspection of whether the packaging is damaged. If there is any expansion or leakage, it should be isolated immediately. All production operations must be trained and qualified, and know the emergency measures. Thunder and lightning, storage with static electricity grounding, fireproof and explosion-proof facilities are in place. In case of fire, dry powder and carbon dioxide can be used to extinguish the fire. It is strictly forbidden In case of sudden changes such as accidents, gas inhalation, and skin burning, don't take responsibility for it. You must report in accordance with factory regulations and seek professional help in time. Remember that always, hard work will happen, and if you fail to prevent it, you will change. Don't be lax in safety and operation. In this way, halogen flameless flame retardants can be used to the best of their ability, and the effect is safe and secure.
Application Area
Halogen Free Flame Retardant for Flexible PU Foam is widely used in many industries today. It is based on halogen-free environmental protection, commonly found in furniture, bedding, sofa cushions, to ensure safety in the home. It is also widely used in car seats and interiors to improve driving comfort. It is used in electronic and electrical packaging, which can be fireproof to unburned, and the protection device is safe. It is also used in building decoration, sound insulation boards, sound-absorbing materials, etc., all rely on its flame retardant properties to prevent problems before they occur. This flame retardant, taking into account softness and safety, is suitable for all kinds of flexible polyurethane foam products. It is also widely used in sofa cushions and mattresses in factories, schools, hospitals and public places. Due to the halogen-free formula, it conforms to the trend of green development, reduces the burden on the environment, benefits people and the world, and is more widely used.
Research & Development
Today's technology is changing with each passing day, and the world is paying more and more attention to green environmental protection. Polyurethane flexible foam is widely used in furniture, automobiles, construction and many other fields, but its flammable disadvantages have long been a concern. Although halogen flame retardants such as bromine and chlorine can suppress fire, they are toxic and polluting, which is not a long-term solution. Therefore, those who are interested in halogen flameless flame retardant solutions should devote themselves to research, analyze material theory and explore the mechanism. They choose inorganic phosphorus, nitrogen and new organic polymers, combine them with various additives, and optimize the ratio, so that they have both high efficiency and flame retardancy, low smoke and low toxicity, and no loss of mechanical properties. Combined with advanced technology trials, its thermal stability, durability and environmental protection properties are tested, and the final results are obtained. It not only conforms to the trend of international laws and regulations, but also benefits human well-being and ecological sustainability. Such a path is the key to industrial innovation and a manifestation of scientific progress.
Toxicity Research
The toxicity of bromophosphorus flame retardants is well known, while halogen-free flame retardants are increasingly used in flexible polyurethane foams because of their environmental friendliness. However, their toxicity should not be ignored, including their complex components, or there are new organic compounds, which decompose and produce foreign substances at high temperature. It is urgent to study toxicity. First, in vitro experiments were used to observe the changes in cell activity. The concentration of halogen-free flame retardants increased gradually, and the cell viability may decrease, or oxidative stress increased. Repeated in vivo experiments in mice, perfusion of a certain amount, halogen-free flame retardants can cause liver damage and kidney damage in large doses, but low doses are not significantly damaged. Its decomposition products should also be detected, or trace impurities such as nitrogen and phosphorus are produced, which have potential sensitization and genetic hazards. Overall, halogen-free flame retardants are less toxic than traditional ones, so the safety of long-term micro-exposure to humans and the environment should be carefully evaluated with a view to their wide promotion.
Future Prospects
Halogen-free flame retardant is used in flexible polyurethane foam, and it is prosperous in this world. However, with the passage of time, new environmental protection regulations and green concepts are becoming more and more severe, and halogen free flame retardant technology is becoming more and more perfect. Looking forward to this journey, environmental protection and safety are carried out at the same time, toxic damage is far away, indoor air is cleaner, and human health benefits. In addition, the flame retardant efficiency continues to climb, the material performance is not reduced, and flexibility and durability are both excellent. Technological innovation is emerging one after another, and new compounding and nano-fillers are emerging one after another. Their low price and wide application range can be used in furniture, automobiles, mattresses and many other fields. In the future, it is expected that this will be the mainstream orientation of the polyurethane foam industry, promoting energy conservation and emission reduction, and conforming to From a macro perspective, halogen has emerged from the competition, expanding the international market, or leading the way in green building materials, contributing to global safety and environmental protection.
Where to Buy Halogen Free Flame Retardant for Flexible PU Foam in China?
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As a leading Halogen Free Flame Retardant for Flexible PU Foam 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 ingredients of Halogen Free Flame Retardant for Flexible PU Foam?
Plain flame retardants are widely used in polyurethane foam, but their combustion often produces toxic fumes and corrosive gases, which damage the human body and the environment. In today's world, people consider its harm and compete for halogen-free flame retardants instead. Flame retardants are used in flexible polyurethane foam, and there are many main components. First, phosphorus-based compounds, especially organophosphonates, such as tripolyphosphonic acid, triphenyl phosphate and its derivatives, can release phosphate radicals when entering the fire, which can help carbonize and block oxygen from burning. Second, nitrogen-based compounds, commonly used melamine and its salts, release nitrogen when burning, generate inert gas, cool the foam, dilute the oxygen trace flame, and help delay the fire. Third, the composite flame retardant system uses both phosphorus and nitrogen systems, and the same effect is superimposed to complement each other. Carbonization and cooling are carried out simultaneously, and the flame retardant benefits are more obvious.
In addition, synergistic agents are often added, such as inorganic metal oxides, such as aluminum hydroxide and magnesium hydroxide. It is safe to add an appropriate amount into the world. Crystal water is released at high temperature to absorb combustion heat and generate a thick protective layer to stop heat and suppress flames. This number is compatible and evenly distributed in polyurethane foam, which not only maintains flexibility, but also obtains flame retardant effect, taking into account the environment and human health. It is widely respected in today's products.
Overall, halogen-free flame retardants are mainly phosphorus and nitrogen compounds, supplemented by inorganic fillers, which are used in conjunction. Its flame resistance mechanism is first carbonization barrier, and then inert gas cooling, while no odor and toxic smoke escape. Scientific technology, rigorous proportions, both safety and ecological protection. It is difficult to achieve, and it is widely used in bedding, sofas, and car interiors. It is the best choice for contemporary green materials.
In addition, synergistic agents are often added, such as inorganic metal oxides, such as aluminum hydroxide and magnesium hydroxide. It is safe to add an appropriate amount into the world. Crystal water is released at high temperature to absorb combustion heat and generate a thick protective layer to stop heat and suppress flames. This number is compatible and evenly distributed in polyurethane foam, which not only maintains flexibility, but also obtains flame retardant effect, taking into account the environment and human health. It is widely respected in today's products.
Overall, halogen-free flame retardants are mainly phosphorus and nitrogen compounds, supplemented by inorganic fillers, which are used in conjunction. Its flame resistance mechanism is first carbonization barrier, and then inert gas cooling, while no odor and toxic smoke escape. Scientific technology, rigorous proportions, both safety and ecological protection. It is difficult to achieve, and it is widely used in bedding, sofas, and car interiors. It is the best choice for contemporary green materials.
How does Halogen Free Flame Retardant for Flexible PU Foam enhance the flame retardancy of polyurethane foam?
Polyurethane soft foam is a commonly used polymer material today and is widely used in furniture, automobiles, buildings and other fields. However, it is flammable by nature, and burns rapidly in case of fire, generating a large amount of smoke and toxic gases, endangering personal and property safety. Today, people hope that it has excellent flame retardant properties, so halogen-free flame retardants have been developed to meet the needs. Halogen-free flame retardants are more environmentally friendly than halogen flame retardants, and do not produce harmful hydrogen halides when burned, which is conducive to sustainable development.
Halogen-free flame retardants can be roughly divided into phosphorus-based, nitrogen-based, phosphorus-nitrogen composite and inorganic fillers. Among them, phosphorus-based flame retardants can decompose into phosphoric acid or polyphosphoric acid in case of fire, which promotes the formation of carbon layers on the surface of polyurethane foam. This carbon layer isolates oxygen and heat, suppresses the flame potential and suppresses the flame. Nitrogen-based flame retardants decompose at high temperatures, releasing inert gases such as ammonia and nitrogen, which dilute the concentration of flammable gases around the foam and reduce the rate of combustion. Phosphorus-nitrogen composite flame retardants combine the strengths of the two and work synergistically to enhance the flame retardant effect. Inorganic fillers such as aluminum hydroxide and magnesium hydroxide release moisture when heated at high temperatures, absorb heat and cool and form an insulating layer on the surface of the foam, blocking the spread of fire.
Material design should take into account the dispersion and compatibility of flame retardants to ensure that they are evenly distributed inside the polyurethane matrix to maximize flame retardant performance. Molecular structure innovation is also a shortcut to improve flame retardant performance. For example, the use of reactive flame retardants makes it tightly linked to the polyurethane chain, which is not easy to migrate and has stronger compatibility. A variety of flame retardant systems can be combined appropriately, and the principle of synergy can be used to improve flame retardant efficiency, reduce the amount of a single component, and slow down the decline of material properties.
In addition, the preparation process is also very critical. Adopting a suitable process makes the flame retardant and polyurethane raw materials mix evenly, which can greatly exert its performance. The structural characteristics such as pore size and density of polyurethane foam also affect its flame retardant performance. A fine and uniform foam structure should be obtained by controlling the foaming process, which is conducive to the flame retardant to block the fire source.
In summary, halogen-free flame retardants can effectively improve the flame retardancy of polyurethane soft foam by promoting multiple mechanisms such as the formation of carbon layer, the release of inert gas, and the formation of heat insulation layer. The best policy is to take into account environmental safety and material physical properties.
Halogen-free flame retardants can be roughly divided into phosphorus-based, nitrogen-based, phosphorus-nitrogen composite and inorganic fillers. Among them, phosphorus-based flame retardants can decompose into phosphoric acid or polyphosphoric acid in case of fire, which promotes the formation of carbon layers on the surface of polyurethane foam. This carbon layer isolates oxygen and heat, suppresses the flame potential and suppresses the flame. Nitrogen-based flame retardants decompose at high temperatures, releasing inert gases such as ammonia and nitrogen, which dilute the concentration of flammable gases around the foam and reduce the rate of combustion. Phosphorus-nitrogen composite flame retardants combine the strengths of the two and work synergistically to enhance the flame retardant effect. Inorganic fillers such as aluminum hydroxide and magnesium hydroxide release moisture when heated at high temperatures, absorb heat and cool and form an insulating layer on the surface of the foam, blocking the spread of fire.
Material design should take into account the dispersion and compatibility of flame retardants to ensure that they are evenly distributed inside the polyurethane matrix to maximize flame retardant performance. Molecular structure innovation is also a shortcut to improve flame retardant performance. For example, the use of reactive flame retardants makes it tightly linked to the polyurethane chain, which is not easy to migrate and has stronger compatibility. A variety of flame retardant systems can be combined appropriately, and the principle of synergy can be used to improve flame retardant efficiency, reduce the amount of a single component, and slow down the decline of material properties.
In addition, the preparation process is also very critical. Adopting a suitable process makes the flame retardant and polyurethane raw materials mix evenly, which can greatly exert its performance. The structural characteristics such as pore size and density of polyurethane foam also affect its flame retardant performance. A fine and uniform foam structure should be obtained by controlling the foaming process, which is conducive to the flame retardant to block the fire source.
In summary, halogen-free flame retardants can effectively improve the flame retardancy of polyurethane soft foam by promoting multiple mechanisms such as the formation of carbon layer, the release of inert gas, and the formation of heat insulation layer. The best policy is to take into account environmental safety and material physical properties.
Does Halogen Free Flame Retardant for Flexible PU Foam affect the softness and physical properties of the foam?
Halogen-free flame retardants are used in flexible polyurethane foams, and their effects on foam softness and physical properties should be analyzed. Polyurethane foams are flexible and elastic, and are widely used in places that require a good touch, such as sitting and lying, packaging, etc. The application of flame retardants is required for fire safety, but its compatibility, dispersion, and addition amount with the foam body are all related to the quality of the final performance. Halogen-free flame retardants, compared with traditional halogens, have the benefits of low toxicity and low smoke. However, their chemical structures are different, and they play a special role in the reaction of polyurethane.
If its molecular structure is suitable for polyurethane, it can be dissolved in the reaction system, or if it has a certain reactivity, it can be covalently combined with the main chain or side chain, the impact on the microstructure of the foam can be minimized, and its softness and elasticity attenuate very little. If the flame retardant has a large particle size, or is poorly polymerized with the matrix, it is easy to form phase separation in the system, or causes porosity disorder during foam nucleation and expansion, the mechanical properties and softness of the foam will be damaged, and even the uniformity of the foam pores will be unbalanced, weakening the elasticity and resilience.
The amount of flame retardant should not be excessive, and the appropriate amount can take into account both flame retardant and soft ends in one fell swoop; if it is excessive, the foam filler effect will appear, the density will increase, the cell will shrink, and the flexibility and feel will be reduced. Physical properties such as tensile and tear strength are also at risk of decline. In addition, if some flame retardants are solid, it is easy to make the cell structure dense, increase the foam compressive stress, and damage the durability.
Today's polymer scientists mostly start with chemical modification to design synergistic flame retardants that can participate in the reticulation of polyurethane, or surface coating technology to improve the dispersion of flame retardants, which not only has the effect of solid flame retardancy, but also maintains flexibility. In fact, if a halogen free flame retardant is selected for flexible polyurethane foam, its softness and physicality are affected, but if the process is proper and the dosage form is adjusted, the impact can be minimized, which is both safe and comfortable.
From this point of view, halogen free flame retardants are like double-edged devices. If used properly, they can be used both, and if used inadvertently, the essence will be damaged. To reconcile the two, only scientific evaluation and reasonable compatibility are required.
If its molecular structure is suitable for polyurethane, it can be dissolved in the reaction system, or if it has a certain reactivity, it can be covalently combined with the main chain or side chain, the impact on the microstructure of the foam can be minimized, and its softness and elasticity attenuate very little. If the flame retardant has a large particle size, or is poorly polymerized with the matrix, it is easy to form phase separation in the system, or causes porosity disorder during foam nucleation and expansion, the mechanical properties and softness of the foam will be damaged, and even the uniformity of the foam pores will be unbalanced, weakening the elasticity and resilience.
The amount of flame retardant should not be excessive, and the appropriate amount can take into account both flame retardant and soft ends in one fell swoop; if it is excessive, the foam filler effect will appear, the density will increase, the cell will shrink, and the flexibility and feel will be reduced. Physical properties such as tensile and tear strength are also at risk of decline. In addition, if some flame retardants are solid, it is easy to make the cell structure dense, increase the foam compressive stress, and damage the durability.
Today's polymer scientists mostly start with chemical modification to design synergistic flame retardants that can participate in the reticulation of polyurethane, or surface coating technology to improve the dispersion of flame retardants, which not only has the effect of solid flame retardancy, but also maintains flexibility. In fact, if a halogen free flame retardant is selected for flexible polyurethane foam, its softness and physicality are affected, but if the process is proper and the dosage form is adjusted, the impact can be minimized, which is both safe and comfortable.
From this point of view, halogen free flame retardants are like double-edged devices. If used properly, they can be used both, and if used inadvertently, the essence will be damaged. To reconcile the two, only scientific evaluation and reasonable compatibility are required.
What is the percentage of Halogen Free Flame Retardant for Flexible PU Foam?
The addition ratio of flame retardant polyurethane foam (ie Flexible PU Foam) depends on the raw material, flame retardant, and its most effective use. Usually, the amount of additives used in the industry is 5% to 25% of the formula weight. If the pursuit of basic flame retardant, such as in accordance with UL 94 HF-1, etc., more than 8% to 15%. If higher flame retardant, etc., is required, the upper limit is often taken, or the phase is adjusted according to the standard.
Flame retardant, phosphorus-based, nitrogen-based, and expansion-based flame retardants are mostly used. Its main function is to inhibit the ignition speed of the foam at the beginning of the flame, reduce the harmful growth of the foam, and do not release elements or other harmful trace elements, which meets the needs of environmental friendliness. The addition ratio is based on the flame retardant compatibility and dispersion. If the PU stock solution is mixed evenly, the performance will be determined and the foam feel will not be affected. Generally speaking, if the flame retardant particles are small and hydrophobic, the dosage can be slightly reduced. If the flame retardant PU initiation is reversed, the flame retardant efficiency can be improved in one step, and the proportion of use can be slightly reduced, up and down by 10%.
During the operation, the flame retardant foam cell, density and mechanical properties can be affected. High dosage, easy to cause foam cell shape, rough surface, and even cracks, so it is not advisable to blindly increase the ratio. In case of high temperature, such as steam seats, packaging or special fire-resistant building materials, etc., it is necessary to improve the flame retardant performance and durability, and modify the ratio of high temperature. Some high-efficiency flame retardants, the phosphorus content exceeds 25%, or can be reduced to 8% to 10%, which has the same flame retardant effect.
As mentioned above, the commonly used ratio of flame retardant to PU foam should be adjusted according to the product, application and boundary. Generally, it is recommended to control the ratio of 5% to 25% of the raw materials, high-quality foam performance, and low-quality flame retardant requirements. Only by considering the ratio, labor and functional requirements can we achieve the best effect.
Flame retardant, phosphorus-based, nitrogen-based, and expansion-based flame retardants are mostly used. Its main function is to inhibit the ignition speed of the foam at the beginning of the flame, reduce the harmful growth of the foam, and do not release elements or other harmful trace elements, which meets the needs of environmental friendliness. The addition ratio is based on the flame retardant compatibility and dispersion. If the PU stock solution is mixed evenly, the performance will be determined and the foam feel will not be affected. Generally speaking, if the flame retardant particles are small and hydrophobic, the dosage can be slightly reduced. If the flame retardant PU initiation is reversed, the flame retardant efficiency can be improved in one step, and the proportion of use can be slightly reduced, up and down by 10%.
During the operation, the flame retardant foam cell, density and mechanical properties can be affected. High dosage, easy to cause foam cell shape, rough surface, and even cracks, so it is not advisable to blindly increase the ratio. In case of high temperature, such as steam seats, packaging or special fire-resistant building materials, etc., it is necessary to improve the flame retardant performance and durability, and modify the ratio of high temperature. Some high-efficiency flame retardants, the phosphorus content exceeds 25%, or can be reduced to 8% to 10%, which has the same flame retardant effect.
As mentioned above, the commonly used ratio of flame retardant to PU foam should be adjusted according to the product, application and boundary. Generally, it is recommended to control the ratio of 5% to 25% of the raw materials, high-quality foam performance, and low-quality flame retardant requirements. Only by considering the ratio, labor and functional requirements can we achieve the best effect.
Does Halogen Free Flame Retardant for Flexible PU Foam comply with environmental and safety regulations?
The requirements of the "Halogen Free Flame Retardant for Flexible PU Foam" are in accordance with the legal requirements of the law, and whether it is appropriate or not. It is the flame retardant added to the original polyurethane foam, and the list does not contain high-quality elements, which is intended to avoid the flammability of high-quality flame retardants, such as dioxin, furan, etc., which have been protected against diseases. The current formula, its basic development, is in line with the international community's initiative to protect public safety in the environment.
According to the REACH law of the European Union and the RoHS directive, the chemical substances involved in the product of the product are subject to additional control, such as polybrominated benzene, brominated diphenyl ether and other flame retardants. It has long been listed and restricted. Flame retardant materials are mainly based on phosphorus, nitrogen, or other materials, which are not easy to burn, and are less harmful to combustion. They have been classified as mainstream. The US and California Proposal 65 has also determined the standards for harmful substances. Among them are GB/T 20284-2006, etc., and flame retardant materials also have standards, including the toxicity of release, the amount of ash generation, etc., which are clearly specified. If the flame retardant material is determined according to the standard, its density and toxicity are controlled within the legal standards, and it is self-consistent.
However, safety protection does not depend on the material, nor does it depend on the whole life cycle. The source of raw materials, energy consumption in the process, material handling, and decomposition of raw materials are all important. If its main components include phosphorus, phosphorus oxides, etc., they have already been notified of safety, assessed in the environment, and communicated with each other. Such as Ecolabel of the United States, UL 94 V-0, etc., the combination of them is especially effective.
It is widely respected in the world today, and it can be developed. However, the production of materials batches, the orientation of products, and the management are still the same, and they still need to be finalized and verified. However, it is necessary to make "Halogen Free Flame Retardant for Flexible PU Foam" comply with the safety law, and it can be expected from time to time.
According to the REACH law of the European Union and the RoHS directive, the chemical substances involved in the product of the product are subject to additional control, such as polybrominated benzene, brominated diphenyl ether and other flame retardants. It has long been listed and restricted. Flame retardant materials are mainly based on phosphorus, nitrogen, or other materials, which are not easy to burn, and are less harmful to combustion. They have been classified as mainstream. The US and California Proposal 65 has also determined the standards for harmful substances. Among them are GB/T 20284-2006, etc., and flame retardant materials also have standards, including the toxicity of release, the amount of ash generation, etc., which are clearly specified. If the flame retardant material is determined according to the standard, its density and toxicity are controlled within the legal standards, and it is self-consistent.
However, safety protection does not depend on the material, nor does it depend on the whole life cycle. The source of raw materials, energy consumption in the process, material handling, and decomposition of raw materials are all important. If its main components include phosphorus, phosphorus oxides, etc., they have already been notified of safety, assessed in the environment, and communicated with each other. Such as Ecolabel of the United States, UL 94 V-0, etc., the combination of them is especially effective.
It is widely respected in the world today, and it can be developed. However, the production of materials batches, the orientation of products, and the management are still the same, and they still need to be finalized and verified. However, it is necessary to make "Halogen Free Flame Retardant for Flexible PU Foam" comply with the safety law, and it can be expected from time to time.
