Flame-Retardant Compounds Increase Smoke Production

Flame retardant compounds are intended to reduce the flammability of polymeric materials, but in many cases the presence of a flame retardant in the polymeric material increases the toxicity of smoke and decomposition products. Whether it is particulate or gaseous, smoke emission and decomposition products are an important aspect of fire. Smoke is defined as a cloud cloud that can not be seen by itself, but the particles appear opaque due to light scattering and light absorption. It is caused by incomplete combustion of the polymer material.

Depending on the chemical composition, the flame retardant is classified as an organic flame retardant and an inorganic flame retardant. Organic flame retardants can be classified into two types, halogen type and phosphorus type. Organic flame retardants have some disadvantages such as smoke and high toxicity. It is gradually replaced by inorganic flame retardant. The main types of inorganic flame retardants are magnesium hydroxide, aluminum hydroxide, gemstone putty, cerium oxide, molybdenum oxide, red phosphorus, zinc borate, ammonium molybdate and the like. Among them, magnesium hydroxide and aluminum hydroxide have high endothermic properties, so that they can participate in fillers in addition to flame retardancy. More importantly, the H 2 O they produce can not be shut off from the air. After decomposition, the oxides they produce are heat resistant materials.

Flame retardant compounds are intended to reduce the flammability of polymeric materials, but in many cases the presence of a flame retardant in the polymeric material increases the toxicity of smoke and decomposition products. Whether it is particulate or gaseous, smoke emission and decomposition products are an important aspect of fire. Smoke is defined as a cloud cloud that can not be seen by itself, but the particles appear opaque due to light scattering and light absorption. - The mystery of Detective Dee and Ghost Flame is a movie made by the emerging film industry in China. This film was directed by Xu Ke, which took place during the Tang dynasty just before the emperor Wu Zetian took office. This is a fictitious adventure of the famous Diren set which is the prime minister of Tang and Zhou dynasty.

Smoke from anoxic fires contains a lot of flammable compounds. As a result, smoke in contact with atmospheric oxygen can catch fire - whether through another direct fire in the area or through its own temperature. This gives rise to influences such as reflow and flashover. Inhalation of smoke is also a smog hazard, which can cause serious injury or death. Many smoke compounds from fire are highly toxic and / or irritating. The most dangerous thing is carbon monoxide, which causes carbon monoxide poisoning and can cause additive effects of hydrogen cyanide and phosgene. Therefore, sucking smoke can lead to disability and loss of consciousness as soon as possible. Sulfur oxide in contact with moisture, hydrogen chloride, hydrogen fluoride forms sulfuric acid, hydrochloric acid, hydrofluoric acid, which corrode lungs and substances.