Recently in Lucheng District of Wenzhou Yunfu buildings in the death of 21 major fires, 19 of which were toxic fumes smoked die. The incident on the 17th in the 16 ~ held in Shijiazhuang, China Salt Industry Association meeting of the Committee of Experts on the expanded work has caused a strong reaction, PVC inflatable experts have called for, the development of low smoke non-toxic inorganic flame retardants imminent. In recent years, with China's urban construction and the rapid development of new building products have emerged, many of them chemical building materials are flammable, combustible construction products, need to add fire retardant. However, at present China with fire retardant products have a big gap compared with the developed countries. Present, the developed countries have basically eliminated the combustion will produce toxic fumes of chlorine flame retardant, low smoke, non-toxic fire retardant inorganic flame retardants account for about one-third of the total. At present China's flame retardant products, chlorine accounted for 84% of the flame retardant, low smoke and non-toxic inorganic flame retardant products accounted for only about 8% of the total. Construction of fire-retardant materials in China has great potential market, China's current flame retardant varieties, the amount there is a big gap with the developed countries, with the state's technical requirements for flame retardant as the strengthening of China's non-toxic fire retardant Low Smoke development and development of a better and broad prospects.
This has increased the threat of domestic fires, in case of a fire will have large amounts of toxic gas, increasing the staff evacuation and fire fighting difficult, it is highly causing major casualties. At present, China's development of non-toxic inorganic flame retardants Low Smoke imminent. Halogen-free environment as magnesium hydroxide flame retardants have broad application prospects, but the domestic production PVC inflatable of magnesium hydroxide flame retardant compared with foreign advanced products, the existence of flame-retardant low efficiency, the need high filler content, easy reunion impact matrix the mechanical properties of materials, such as inadequate, industry needs more technology research efforts, reduce production costs and product prices. Existing domestic DRF series flame retardants, used proprietary ultra-fine, surface modification and preparation of complex technology from not only good performance and low smoke fire-retardant, halogen-free and non-corrosive, both flame retardant, electric insulation, After filling the mechanical properties such as good performance, low smoke and non-toxic, environmentally friendly, safe and reliable use, and containing halogen or phosphorus in the system to reduce the formation of flue gas; been widely used in PVC, PP, PE, PS, ABS, PU, such as a flame retardant in plastics, flame-retardant high efficiency, small mechanical properties of the substrate. In addition, the intumescent flame retardant system is a new development in the halogen-free flame retardant system with a high flame retardant properties, in the combustion process without dropping, low smoke, non-toxic, acid from sources such flame retardants, carbon source and the source of foam.
Polyvinyl chloride (PVC) widely used as a large variety resin, in the PVC inflatable construction areas have broad application. Smoke and its flame retardant is of great significance, the flame-retardant PVC past generally add organic flame retardants, but toxic organic flame retardant, high cost and, in PVC will be moved, thus affecting the flame-retardant effect exudative, and combustion issued large amounts of toxic smoke asphyxiation poisoning, and the new compound inorganic flame retardants, have been resolved Smoke and flame retardant PVC, a low-cost, non-toxic, permanent flame retardant characteristics, with its handling of the PVC smoke amount of oxygen index reached GB, discarded after use in the garbage when no secondary pollution. Experts pointed out: the development of a smoke-free and non-toxic fire retardant attention should be paid to the development of the following areas: development of high-performance inorganic non-halogenated flame retardants, and the key is to resolve the super-fine solid particles and the surface treatment, taking into account the formation of particles and distribution and purity; stable, multifunctional and phosphorus flame retardant low toxicity is the development side, to capture volatile, poor heat resistance is small molecular phosphorus flame retardant The main shortcoming; resistance of polymer-bromo Burning is the replacement of the better varieties, the polymer is an important direction of development in order to solve the migration and increase compatibility and thermal PVC inflatable stability; red phosphorus, intumescent flame retardant system in the development of important significance.
Low Smoke imminent development of non-toxic fire retardantThis has increased the threat of domestic fires, in case of a fire will have large amounts of toxic gas, increasing the staff evacuation and fire fighting difficult, it is highly causing major casualties. At present, China's development of non-toxic inorganic flame retardants Low Smoke imminent. Halogen-free environment as magnesium hydroxide flame retardants have broad application prospects, but the domestic production PVC inflatable of magnesium hydroxide flame retardant compared with foreign advanced products, the existence of flame-retardant low efficiency, the need high filler content, easy reunion impact matrix the mechanical properties of materials, such as inadequate, industry needs more technology research efforts, reduce production costs and product prices. Existing domestic DRF series flame retardants, used proprietary ultra-fine, surface modification and preparation of complex technology from not only good performance and low smoke fire-retardant, halogen-free and non-corrosive, both flame retardant, electric insulation, After filling the mechanical properties such as good performance, low smoke and non-toxic, environmentally friendly, safe and reliable use, and containing halogen or phosphorus in the system to reduce the formation of flue gas; been widely used in PVC, PP, PE, PS, ABS, PU, such as a flame retardant in plastics, flame-retardant high efficiency, small mechanical properties of the substrate. In addition, the intumescent flame retardant system is a new development in the halogen-free flame retardant system with a high flame retardant properties, in the combustion process without dropping, low smoke, non-toxic, acid from sources such flame retardants, carbon source and the source of foam.
Polyvinyl chloride (PVC) widely used as a large variety resin, in the PVC inflatable construction areas have broad application. Smoke and its flame retardant is of great significance, the flame-retardant PVC past generally add organic flame retardants, but toxic organic flame retardant, high cost and, in PVC will be moved, thus affecting the flame-retardant effect exudative, and combustion issued large amounts of toxic smoke asphyxiation poisoning, and the new compound inorganic flame retardants, have been resolved Smoke and flame retardant PVC, a low-cost, non-toxic, permanent flame retardant characteristics, with its handling of the PVC smoke amount of oxygen index reached GB, discarded after use in the garbage when no secondary pollution. Experts pointed out: the development of a smoke-free and non-toxic fire retardant attention should be paid to the development of the following areas: development of high-performance inorganic non-halogenated flame retardants, and the key is to resolve the super-fine solid particles and the surface treatment, taking into account the formation of particles and distribution and purity; stable, multifunctional and phosphorus flame retardant low toxicity is the development side, to capture volatile, poor heat resistance is small molecular phosphorus flame retardant The main shortcoming; resistance of polymer-bromo Burning is the replacement of the better varieties, the polymer is an important direction of development in order to solve the migration and increase compatibility and thermal PVC inflatable stability; red phosphorus, intumescent flame retardant system in the development of important significance.