[
Jiuzhi Plastics News] The necessity of halogen-free
plastic flame retardant , bromine-based plastic flame retardant is a kind of common plastic flame retardant, used for flame retardant of many daily necessities and industrial products, but bromine-based plastic flame retardant The release of irritating and corrosive gases and a large amount of smoke during combustion have been banned in recent years, and phosphorus-nitrogen-based expanded halogen-free plastic flame retardants have emerged. Jiuzhi Plastics Network Xiaobian takes everyone to understand the necessity of halogen-free plastic flame retardant:
One: flame retardant, attenuated, smoke-proof and combined
1. Natural polymer materials and organic synthetic polymer materials, most of which are flammable and flammable. Plastic flame retardants are additives used to prevent these materials from being ignited and inhibit flame propagation. Materials containing plastic flame retardants are difficult to ignite and can inhibit flame propagation, thus preventing fires.
2. Plastic flame retardants should minimize the amount of toxic and corrosive gases and smoke generated during thermal decomposition and combustion of materials. They are often the first and most dangerous factors in fires. Therefore, flame retardant and attenuated, Suppressing smoke is a comparison.
3. The safety assessment of plastic flame retardants includes the acute toxicity, carcinogenicity, variability and irritation of the plastic flame retardant itself, and should also include the amount of toxic gases and fumes generated during combustion.
Second: plastic flame retardants are divided into three types: additive type, reactive type and finishing type.
1. The additive type is physically dispersed in the matrix and is mostly used in thermoplastic polymers.
2. The type is a monomer as a high polymer, participates in the copolymerization reaction, and finally becomes a monomer in the molecular structure of the polymer, and is mostly used for a thermosetting polymer.
3. Finishing type is flame retardant finishing on fibers or fabrics.
Three: The largest users of plastic flame retardants are plastic products, accounting for about 80%. In addition, textiles account for about 5%, and paints account for about 3%.
Four: flame retardant and halogen-free is an inevitable trend of development
The above is the full content of the necessary performance of the plastic flame retardant without halogenation introduced by Jiuzhi Plastics Network Xiaobian. For more news about plastics, please continue to pay attention to our website - Jiuzhi Plastics.
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