What are the basic components of fire protection additives?

Fire retardants are also called fire retardants and flame retardants. It can protect plastic products, textiles, wood and other agents that prevent fire or slow the spread of flames. The main reason is that the medicament can generate a large amount of incombustible gas or the medicament film can not burn to achieve the purpose of fire prevention.

The fire-retardant additives in intumescent fire-retardant coatings are mainly composed of three parts: a carbonizing agent, a dehydration carbon catalyst and a blowing agent. Charring agents are usually some high-carbon polyhydroxy organic compounds. They form a porous structure of carbon layer under the action of a dehydration catalyst. They are the material basis for forming a three-dimensional structure and non-combustible foamed carbonized layer. The foaming layer plays the role of the skeleton. The main function of the dehydration carbon catalyst is to promote the dehydration, carbonization and thermal decomposition of the carbonizing agent and the coating, so that the polyhydroxy compound is dehydrated to form a non-combustible carbon layer, and the production of organic matter due to thermal decomposition is reduced The amount of combustible tar, aldehydes, ketones, etc., and effectively prevent the occurrence of oxidation reactions with large exothermic heat, etc.. Blowing agent is an important additive that affects the fire resistance of coatings. It is to make the coating in the heating process Incombustible gas is decomposed. On the one hand, it isolates the contact between the substrate and the air. On the other hand, it expands the coating to form a loose and porous foam layer, thereby inhibiting the progress of combustion.