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Mca manufacturers take you to understand the types of flame retardants


Release time:

Jan 07,2021

[Summary]In recent years, the average annual growth rate of China's flame retardant production can not be ignored, far higher than the level of other countries. At present, with the progress of science and technology, the research and development of flame retardants are also moving forward like other fields.

In recent years, the average annual growth rate of China's flame retardant production can not be ignored, far higher than the level of other countries. At present, with the progress of science and technology, the research and development of flame retardants are also moving forward like other fields.

Composite materials containing resin and rubber have a certain degree of flammability. Flame retardants are a class of additives that prevent ignition of polymeric materials or inhibit flame propagation. The most commonly used flame retardants are compounds of phosphorus, bromine, chlorine, antimony and aluminum. Flame retardants can be divided into two categories: additive type and reactive type according to the method of use. Additive flame retardants are easy to use and adapt to large but have an impact on the performance of composite materials. The reactive flame retardant has little effect on the properties of the composite, and the flame retardancy is durable.

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The flame retardant used in composite materials should have the following properties: high flame retardant efficiency, can give the composite material good self-extinguishing or flame retardant; has good compatibility with the composite material and is easy to disperse; has a suitable decomposition temperature, that is, it does not decompose at the processing temperature of the composite material, but can rapidly decompose when the composite material is thermally decomposed to exert the flame retardant effect; non-toxic or low-toxic, odorless, non-polluting, and does not produce toxic gases in the flame retardant process; when used with composite materials, it does not reduce the mechanical properties, electrical properties, weather resistance and thermal deformation temperature of composite materials; good durability, Can be retained in composite products for a long time to play its flame retardant effect; source wide and low price.

Brominated flame retardant agent has high flame retardant efficiency, less dosage, almost no effect on the mechanical properties of composite materials, and can significantly reduce the content of hydrogen halide in the gas, and this kind of flame retardant and matrix resin mutual capacity is good, even under harsh conditions, there is no ejection phenomenon.

Chlorine flame retardants are relatively cheap and are still the main flame retardants used at present. Due to poor thermal stability, it is only suitable for processing temperatures below200C, chlorinated alicyclic hydrocarbons and tetrachlorophthalic anhydride have high thermal stability and are commonly used as flame retardants for unsaturated resins.

Phosphorus flame retardants and organic phosphides are additive flame retardants that can form stable polymers, which can play a flame retardant effect, and the flame retardant effect is better than bromide. This kind of flame retardant is widely used in epoxy resin, phenolic resin, polyester, polycarbonate, polyurethane, polyvinyl chloride, polyethylene, polypropylene,ABSWait.

 

 

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