Textile flame retardant technology classification
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Flame retardant fabric flame retardant method textile fabric proban flame retardant finishing
The flame retardant methods of fibers and textiles can be roughly divided into two categories: flame retardant modification of raw filaments and flame retardant finishing.
The first type is the flame-retardant acrylic and polyester currently produced by the flame-retardant modification method of raw silk. Most of them use the copolymerization method, because the flame retardant is combined with the macromolecules. On the chain, the flame retardant properties are long-lasting. The blending method is particularly suitable for polymers without polar groups, such as polypropylene.
The second is the flame retardant finishing method of fabrics. This type of method can be divided into: padding and baking method, suction cleaning method, organic solvent method, coating method and spray method. In the flame retardant finishing of cellulose fibers, there are Pyrovatex CP method, TH2PC (tetrahydroxymethylphosphorus chloride) amide method, Proban method and phosphoric acid-urea method (Banf lam method), etc., which are all padding and baking methods. The flame retardant finishing of vinylon is also mostly done by padding and baking. The organic solvent method has many safety issues and is generally not used. The coating method makes the fabric stiff after finishing, and is mostly used for tarpaulins and decorative fabrics. The finishing of polyester can be done by suction cleaning method. There is no systematic experience in the flame-retardant finishing of blended fabrics. However, the 87 flame-retardant polyester-cotton cloth studied by the Military Equipment Research Institute of the General Logistics Department of my country has accumulated several years of experience in industrial production. The performance exceeds similar products of the American company Le eb lanc.
Textile burning is a destructive reaction caused by heating to a certain extent, so flame retardancy and heat protection are closely related. In addition, protective clothing for furnace workers should also have the performance of preventing radiant heat; fire-fighting clothing should also have waterproof properties; protective clothing for flammable and explosive positions should also have anti-static properties. When workers wear protective clothing and move in a certain environment, the protective clothing is required to have safe use performance and environmental safety performance. In order to improve efficacy, the protective clothing is also required to have functional performance and comfort performance. Obviously, it is an objective and practical need to make flame-retardant textiles multi-functional.
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