Some common sense of flame retardant, antimony trioxide manufacturers for you

Antimony trioxideThe manufacturer thinksThe flame retardant effect of inorganic flame retardant is mainly to use the heat storage and thermal conductivity of the large specific volume filler, so that the material is difficult to reach the decomposition temperature, or through the thermal decomposition of the flame retardant to absorb heat, thereby alleviating or terminating the heating process of the main material. The flame retardant mechanism is the release of crystal water when heated, evaporation decomposition release water vapor. This reaction process needs to absorb a large amount of combustion heat energy, which greatly reduces the surface temperature of the material and greatly reduces the probability of thermal decomposition and combustion of polymer materials.

Antimony trioxideThe manufacturer thinksHalogen flame retardants are one of the largest organic flame retardants in the world, and bromine and chlorine flame retardants are widely used. Halogen flame retardants are mostly organic and have good compatibility with the main polymer materials. As flame retardant additives, halogen-based flame retardants do not have a substantial impact on the physical and chemical properties of the polymer material itself. In addition, the halogen-based flame retardant can meet the requirement of adding a small amount, but can achieve an extremely excellent flame retardant effect.

Antimony trioxideThe manufacturer thinksBromine-containing halogen flame retardants include aliphatic, cycloaliphatic, aromatic and other bromine-containing compounds, such as decabromodiphenyl ether, decabromodiphenyl ethane, tetrabromobisphenolA, etc., chlorine-containing flame retardants are mainly chlorinated paraffins. The flame retardant mechanism of bromine and chlorine is similar: at high temperature, the carbon halogen bond in halogen flame retardant can be broken, the release of halogen free radicals, effectively capture the free active free radicals produced by the thermal degradation of polymer materials, can effectively reduce the concentration of free radicals, so as to alleviate or terminate the burning free radical chain reaction. In addition, the hydrogen halide released by the decomposition of the halogen flame retardant is not easy to burn, effectively blocking oxygen and inhibiting the combustion reaction.

Antimony trioxideThe manufacturer thinksOnce the polymer material containing halogen flame retardant burns, it will produce a large amount of hydrogen halide gas, which is toxic and corrosive. At the same time, it is easy to absorb moisture in the air to form a strong corrosive halogen acid, accompanied by a large amount of smoke. These fumes, toxic gases and corrosive gases are harmful to human health and pose great obstacles to fire fighting, escape and recycling.

Antimony trioxideThe manufacturer thinksAccording to the nature and composition of phosphorus flame retardants, they can be divided into inorganic phosphorus flame retardants and organic phosphorus flame retardants. Inorganic phosphorus flame retardants include red phosphorus, ammonium phosphate and ammonium polyphosphate, and organic phosphorus flame retardants include phosphates and phosphites. Phosphorus flame retardant is also a stable and widely used flame retardant, and its flame retardant mechanism is mainly to form an isolation film to achieve flame retardant effect.

Antimony trioxideThe manufacturer thinksFor the flame retardant effect of oxygen-containing polymer: the thermal degradation products of the flame retardant are used to promote the rapid dehydration and carbonization of the polymer surface, and then form a carbonized layer. Simple carbon has a flame retardant effect because it does not undergo evaporative combustion and decomposing combustion that produce a flame. The internal chemical reaction is the thermal decomposition of phosphorus-containing compounds, and the product is polymetaphosphoric acid, which is a strong dehydrating agent.