In recent years, it has developed rapidly in the flame retardant market at home and abroad

2022-07-08 16:15:39

Aluminum hydroxide flame retardant has the advantages of non-toxic, good stability, no toxic gas under high temperature, and can also reduce the amount of smoke when plastic is burning. Moreover, the dehydration and heat absorption temperature is low, about 235-350 ℃. Therefore, when plastic is just burning, the flame retardant effect is significant. At the same time, the product price is low, and the source is wide. Therefore, it has developed rapidly in the flame retardant market at home and abroad in recent years, and the global consumption of flame retardant is nearly 1.4 million tons, Among them, 85% are additive flame retardants and 15% are reactive flame retardants.

In the next five years, it will continue to grow at an average annual rate of 5%. When the addition of aluminum hydroxide is 40%, it can significantly slow down the thermal decomposition temperature of PE (polyethylene), PP (polypropylene), PVC (polyvinyl chloride) and ABS (acrylic / butadiene / styrene copolymer), which has a good effect of flame retardation and smoke reduction. Flame retardant polyolefin with 60% aluminum hydroxide can be used as building materials and interior decoration materials of automobiles and ships.

When aluminum hydroxide is blended with rubber, it is difficult to form a good interface between the two, and a large amount of filling is bound to cause great damage to the physical and mechanical properties of rubber. Li Juan and others used ATH, chlorinated paraffin and Sb2O3 together. Inorganic flame retardant ath can meet higher flame retardant requirements without filling a high number of parts, and does not affect the physical and mechanical properties of rubber.

Bromine based halogen-free flame retardants have been produced and used for more than 30 years. At present, there are about 70 kinds of bromine based halogen-free flame retardants, among which decabromodiphenyl ether (DBDPO), tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCD) are the most important.

The output of the first two accounted for about 50% of bromine halogen-free flame retardants. Some traditional bromine halogen-free flame retardants are under the pressure of increasingly stringent environmental requirements, forcing users to find substitutes for bromine halogen-free flame retardants, and promoting the emergence of new flame retardant systems. The shrinking market of traditional brominated halogen-free flame retardants such as polybrominated diphenyl ethers has provided market space for environment-friendly brominated halogen-free flame retardants such as brominated epoxy resins and decabromodiphenylethane.