Organophosphorus flame retardants mainly refer to phosphate ester flame retardants, which are one of the most important varieties of PC/ABS alloy halogen-free flame retardants, with dual effects of flame retardant and plasticization. Its flame retardant mechanism is: on the one hand, it is thermally decomposed to generate phosphoric acid, metaphosphoric acid, etc., which can catalyze the endothermic dehydration of hydroxyl-containing compounds into carbon reaction, so that a dense carbon layer is formed on the surface of the polymer; on the other hand, it is heated to generate PO?, which can Capture H? and HO? to inhibit combustion reaction.

ABS plastics are generally used in traditional household appliance housings. ABS plastic has the characteristics of wide source of raw materials, easy molding and processing and excellent impact performance, and is widely used in automobiles, household appliances and machinery industries.

In recent years, epoxy resin (EP) has been widely used in various packaging materials, coatings, civil engineering, construction, adhesives, electronics and aviation. The oxygen index of ordinary EP is only about 19.8%, which is a flammable substance. Therefore, how to improve the flame retardant performance of EP has attracted extensive attention of domestic and foreign researchers.

At present, the cable industry is accustomed to refer to flame retardant (FireRetardant), halogen-free low-smoke (LowSmokeHalogenFree, LSOH) or low-halogen low-smoke (LowSmokeFume, LSF), fire resistance (FireResistant) and other cables with certain fire resistance properties are collectively referred to as fireproof cables.

Unsaturated polyester is unsaturated dicarboxylic acid (or acid anhydride) or their mixed acid composed of saturated dicarboxylic acid (or acid anhydride) and polyhydric alcohol. It is linear with ester bond and unsaturated double bond. polymer compounds. Usually, the polyesterification polycondensation reaction is carried out at 190-220°C until the desired acid value (or viscosity) is reached. After the polyester condensation reaction is completed, a certain amount of vinyl monomer is added while hot to form a viscous liquid. Such a polymer solution is called an unsaturated polyester resin.

As we all know, the UL flame retardant grade increases step by step from HB, V-2, V-1, V-0, 5VB to 5VA. The UL flame retardant standard is a popular standard for daily inspection of whether materials are flame retardant. However, because it is an American standard, usually after translation, Chinese people have a variety of understandings of the standard. Each factory has its own set of "V0" grades. It brings great inconvenience to upstream and downstream manufacturers.

PVC liquid flame retardant is a kind of composite high-efficiency flame retardant. It is colorless and transparent liquid in appearance. It is suitable for the flame retardant of PVC transparent products. It has good flame retardant and plasticizing properties. Improve the water resistance, cold resistance, antistatic properties of products, no exudation, no color pollution. Widely used in soft pvc/pu cable and rigid polyurethane foam, unsaturated polyester resin, polyvinyl chloride, polyvinyl acetate.

Combustion is an indispensable natural phenomenon in the objective world and plays an important role in daily production and life. The generation of combustion needs to meet three conditions, that is, a certain temperature, oxygen and flammable substances, all of which are indispensable. Among them, flammable substances are the bodies that can be burned, which are generally hydrocarbons, such as various biological materials such as flowers, plants and trees, or high-molecular polymers, including plastics, rubber, and fibers. Here, let's learn about rubber combustion and rubber flame retardants.