Many people have seen the film shed, and the flame retardant of the film shed can be said to be very good, so do you know what materials are available for the production of the film-stayed car shed? Let's introduce it in detail below!
1. Foaming agent: expansion fire retardant coating can only produce expansion layer under high temperature flame under the action of foaming agent. The foaming agent decomposes and releases non combustible gases such as ammonia, water, carbon dioxide and hydrogen halide when it is heated, so that the coating expands and foams when it reaches the softening point to form a sponge structure.
2. Catalyst: catalyst is a kind of material that can decompose phosphoric acid under certain conditions, and the decomposed acid dehydrates polyols, thus forming a three-dimensional non flammable carbonization layer. Generally, melamine phosphate has less water solubility than that of PPP, and has the double functions of catalysis and foaming. Melamine phosphate is mainly used as catalyst.
3. Carbon forming agent: the carbon forming agent is the material basis for the formation of the foam carbonized layer of the non flammable three-dimensional space structure at high temperature, and plays a skeleton role in the carbonization layer of the foam. The decomposition temperature of carbon forming agent should match with catalyst. When using polyaniline phosphate as catalyst, high thermal stability high carbon polyhydroxy compound is used as carbon forming agent.
The above is the content shared by the editor today. For more information about membrane structure shed, please continue to pay attention to this station, or call for advice.