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What are the main ingredients of Flame Retardant for Polypropylene?
Polypropylene, a commonly used polymer material in foundry, is widely used in packaging, chemical, and automotive industries due to its excellent mechanical and chemical properties. However, it is flammable by itself, and it is flammable at a high temperature. It generates molten droplets, or generates harmful emissions. To increase its safety, it is necessary to implement flame retardant measures. Therefore, the flame retardant added to polypropylene can make it burn and spread, and it can also reduce the emission rate. Flame retardant, ancient and modern systems, but often can be divided into elemental, phosphorus, nitrogen, and chemical fillers.
Elemental flame retardants, especially bromide, such as decabromodiphenylethane and pentadiene bromide, are the most typical. Its function is to produce active free radicals in the combustion process, and reverse them in the flame, so that the combustion can be stopped. Phosphorus-based flame retardants, such as polyphosphoric acid, phosphorus, phosphate esters, etc., can generate dense carbide in the material table, block the source of oxygen, or capture free radicals and suppress fire. Nitrogen-based flame retardants, such as melamine derivatives, decompose in case of fire and generate inert oxygen, dilute combustion and oxygen content, and also help to form carbon. Filling with flame retardants such as oxidation and oxidation, in high temperature release of crystal water, absorption capacity, and surface formation of refractory slag, combustion and reduction effect.
Today's research on color protection, high efficiency, and easy to produce toxic substances. It is replaced by phosphorus and nitrogen. Phosphorus and nitrogen are effective, which can meet the needs of flame retardancy, low toxicity, and low toxicity. It is often used for high-quality applications such as equipment, steam, etc. If the amount of melamine polyphosphate is added to polypropylene, it can improve the flame retardant index. Therefore, the flame retardant is suitable for the application, environment and performance requirements, and choose the most suitable one.
What is the proportion of Flame Retardant for Polypropylene?
Polypropylene is light in nature, strong and resistant to corrosion, but the flaws of flammability are not hidden. If you want to resist it, you should supplement it with flame retardants to increase its flame resistance. The choice of flame retardants, or halogens, or phosphorus series, or antimony oxygen, or inorganic substances, can be adjusted as needed. However, when added to polypropylene, the proportion is constant, and it needs to be weighed according to the use and safety level of the product.
In today's consideration of the information used in various cities and authorities, the commonly used flame retardants in polypropylene are mostly added in an amount between 3% and 25%, but they are widely used in the middle of 15%. If it is a high flame retardant grade requirement, such as the UL94 V-0 standard, it needs to be gradually increased to more than 20%. If only V-2 or lower flame retardancy is required, 10% or less can be used. If halogen flame retardants such as bromine are used, the dosage is often slightly reduced, and the cover itself is more effective; phosphorus flame retardants or aluminum hydroxide need to be slightly increased to pass. In this world, environmental protection is trending, and green halogen-free flame retardants are becoming more and more popular. Among them, magnesium hydroxide and phosphate esters are mostly 15 to 25%. There is also a synergy effect that the use of a variety of flame retardants, or the addition of synergistic agents such as antimony trioxide, can appropriately reduce the amount of the main flame retardant, but the total amount should not be too high, so as not to damage the mechanical and processability.
It is important that the addition of flame retardants, the overall compatibility with the formula, the appearance and mechanical properties of the product, and the suitability of processing equipment should be carefully considered. Excessive amount is easy to cause brittleness, dull color, or affect the molding flow. According to the process, the mixing is uniform, and the dispersion must be fine. It can be modified by blending, so that the flame retardant ingredients are spread between the substrates, and the flame is difficult to burn when it encounters the flame, forming a self-security guarantee.
In summary, the optimum proportion of flame retardants in polypropylene is about 10 to 25 percent. Practical application should be carefully selected and prepared according to the nature, standards, cost and environmental requirements of the product.
How does Flame Retardant for Polypropylene affect the physical properties of polypropylene materials?
Polypropylene is a commonly used polymer material today. It is light in nature, has good mechanical toughness, and has good chemical resistance. It is widely used in industrial, agricultural and daily utensils. However, it has strong spontaneous combustion and is vulnerable to fire damage. For this reason, flame retardants are often added to increase its fire resistance. However, the addition of flame retardants also has many effects on the physical properties of polypropylene.
First of all, flame retardants are mostly inorganic or organic fillers. After adding, the density of the matrix increases and the quality increases. The advantages of the original polypropylene light weight are slightly weakened. Secondly, the interfacial bonding between flame retardants and polypropylene fibers is often hindered, and it is easy to form minor defects, causing material brittleness to increase, ductility and tensile strength to decrease. Especially at higher doping amounts, the stiffness increases, but the impact toughness decreases, and it is easy to crack.
Another example is that the thermal deformation temperature rises slightly or decreases slightly, depending on the type of flame retardant. If aluminum hydroxide, antimony trioxide and other inorganic agents may have the effect of enhancing thermal deformation; if phosphine-based, organic bromine and other organic agents can improve thermal stability in the short term, they may induce decomposition and reduce thermal properties in the long run. Surface properties are also affected by interference, and flame retardants affect their smoothness and color, making the appearance of the product less than that of pure polypropylene.
The dispersion of flame retardants is the key, and when it is difficult to distribute uniformly, it is easy to form agglomeration. The mechanical properties of such areas are particularly poor; if it can be well combined with the matrix, the performance attenuation can be minimized. However, usually flame retardants still have a certain weakening of the impact strength, tensile toughness, and ductility of polypropylene. In order to alleviate the effect, it is often supplemented with a blend of compressors and coupling agents to promote interfacial bonding and partially compensate for the loss of physical properties.
Overall, although flame retardants can significantly improve the flame retardant grade of polypropylene, they are unfavorable to its original physical properties, especially mechanical strength, toughness, thermal stability, and appearance, when improving flame retardant. If it can be refined and harmonized in the process and formula, it can weigh the combination of flame retardant and performance, so as to broaden its application.
Does the Flame Retardant for Polypropylene meet environmental standards?
Polypropylene is a commonly used polymer chemical material with excellent properties. However, it is flammable, and it will quickly spread in case of an open flame. In the past, flame retardants were added to it in order to improve safety performance. Today I want to ask whether the flame retardants used in polypropylene can meet the standards of environmental protection. Today I will describe its main point in text.
There are many kinds of flame retardants, and bromine, organohalogen, or phosphorus and nitrogen-containing are commonly used in the past. Bromine and halogen are flame retardants, which are effective and inexpensive. When burned, toxic fumes escape, pollute the atmosphere and damage people's health. Since the country has tightened the case and advocated green development, Europe, America and Japan have discussed banning such substances. Current environmental protection standards, such as REACH and ROHS of the European Union, domestic "Technical Requirements for Environmental Labeling Products - Plastic Products" and "Restriction Standards for Flame Retardants". All set clear limits on the harmful components of flame retardants.
New flame retardant, multi-use halogen-free and environmentally friendly. It is mainly composed of phosphorus and nitrogen, metal hydroxides such as aluminum hydroxide and magnesium hydroxide. During this kind of combustion, there is no highly toxic escape, and after decomposition, it is mostly turned into harmless substances, which will not pollute soil and water sources, and the impact on the environment and human body is greatly reduced. However, the composition is complex, the process requirements are high, and the cost is expensive. The promotion is still in progress.
is based on whether the polypropylene flame retardant can comply with the law, depending on the type used, mainly containing halogens and harmful heavy metals, which are now subject to restrictions and are not suitable for environmental protection. If a halogen-free environmentally friendly flame retardant system, such as aluminum hydroxide, phosphorus and nitrogen series, is matched with green additives, and has been inspected by an authoritative testing agency, and the content does not exceed the limit, it can be said to comply with regulations and environmental protection standards. The finished product needs to pass the review of ROHS and REACH before it can be circulated in domestic and foreign markets.
To sum up, whether the polypropylene flame retardant can meet the environmental protection standards depends on the flame retardant formula used, and must also undergo statutory testing and meet the specifications before it can be an environmentally friendly material. If you blindly cut corners and use poisons indiscriminately, although you will gain temporary peace, you will lose the foundation of long-term stability, and it is not advisable.
What are the application fields of Flame Retardant for Polypropylene?
Polypropylene is a polymer material commonly used in modern times. It is light and strong, has excellent chemical resistance, and has a low ignition point, which is easy to delay fire. In order to prevent the disaster of fire, it is necessary to apply flame retardants to make it protect itself from flames. Flame retardants are applied to polypropylene, which has a wide application field and is widely used in many industries because of its improved material safety. Here are the essentials.
In the field of utensils, household appliances do not use polypropylene as the shell or as the internal parts. For example, refrigerators, washing machines, and microwave ovens are all designed to prevent their materials from burning due to small fires, so as to ensure that the house is safe and reduce disasters. Another example is electronic cables, which are often covered with flame retardant polypropylene, which will not be delayed in case of fire. The safety of Jiahui lines depends on communication and power.
Car manufacturing also benefits more. Today's automobile manufacturing often uses polypropylene as the interior, or as the dashboard and door decoration. If there is no flame retardant, it will be dangerous. Supplemented by flame retardants, it will not easily turn into ashes, ensuring the safety of passengers, worry-free circuit shorts or other fires. However, the decoration materials of aviation, rail transit, and ships are also imitated.
In the construction industry, polypropylene flame retardant materials are often used for pipes, floors, wall panels, and insulation layers. In order to ensure that the building is pre-emptive, when an accident occurs, it can contain the spread of fire. It is also mandated by fire regulations to reduce losses.
Daily necessities and packaging are also affected by it. Flame retardant polypropylene is often used as toys, stationery, child seats and food packaging to prevent the danger of fireworks and add peace of mind for daily use. Miscellaneous medical apparatus, used for its parts, especially mandatory flame retardant to prevent diseases during surgery.
Industrial equipment and agricultural machinery, polypropylene flame retardant parts are also widely used. Cover power machinery, pump casings and liquid storage containers, etc., inevitably high temperature or arc, the use of flame retardant polypropylene can contain small and large fires.
To sum up, the application of polypropylene flame retardants has been used several times in electromechanical, automotive, construction, daily use, medical, and agricultural industries, all of which focus on fire prevention and safety. Today's technology is developed, and its categories are increasingly diverse with the needs of applications.