PVC fireproof board is made of PVC board as a raw material with a honeycomb mesh structure in cross section.
The largest proportion of PVC fireproof board in the building materials industry is 60%, followed by the packaging industry, and there are several other small-scale applications. According to the degree of hardness, it can be divided into soft PVC and hard PVC. According to the production process, it can be divided into PVC skinned foam board and PVC free foam board. According to transparent and opaque, it can be divided into PVC transparent board and pvc board.
PVC board manufacturers tell that the scientific name of PVC is polyvinyl chloride, which has fire resistance, but can burn.
The combustion of polyvinyl chloride is divided into two steps: firstly, it is burnt to decompose hydrogen chloride gas and diene containing dao with double bonds at 240℃-340℃, and then carbon combustion occurs at 400-470℃. During the combustion process, hydrogen chloride and other toxic gases such as dioxins are released.
Polyvinyl chloride can be made by substitution reaction of ethylene, chlorine and catalyst. Due to its fire and heat resistance, PVC is widely used in a variety of products in all walks of life: wire sheaths, fiber optic sheaths, shoes, handbags, bags, accessories, signs and billboards, construction and decoration supplies, furniture, ornaments , Rollers, hoses, toys, curtains, rolling doors, auxiliary medical supplies, gloves, etc.
