Flame retardant fabric technology

Classification:
flame retardant fabric

1. Flame-retardant fabric, flame-retardant fabric technology status and regulations

1. Flame-retardant cloth and current status of flame-retardant fabric technology

In recent years, my country has developed rapidly in textile flame-retardant cloth and flame-retardant fabric technology. A large number of new flame-retardant cloths, flame-retardant fabric fibers and multi-functional flame-retardant fabrics have been developed.Flame-retardant fabrics, flame-retardant fabrics, flame-retardant fabrics, flame-retardant fabrics have come out, but the gap with foreign countries is still large, especially the high-end market is basically dominated by foreign companies<font STYLE="FonT-siZe: However, there are still many difficulties to be overcome in the technology developed by our country. According to relevant information, at present, the proportion of flame-retardant cloth and flame-retardant fabric products used in public places in my country is very small, and the amount of flame-retardant cloth and flame-retardant fabric plastics is The proportion of 1% has not been reached, and the proportion of flame-retardant fabrics and flame-retardantfabric textiles is even smaller. Most of the natural fibers, man-made fibers and synthetic fibers used in daily life are flammable or combustible, and textiles processed with these fibers are also highly flammable . A large number of statistics at home and abroad show that interior decoration fabrics, bedding, sofas, electric blankets, etc. have all been the source of fires. Therefore, developed countries have attached great importance to the development of flame-retardant products. Fabrics, flame-retardant fabrics and textiles have all been given great importance, and strict regulations have been formulated.

To characterize the flammability of textiles, the limiting oxygen index (LOI) can be expressed, which is the percentage of low-oxygen volume required to maintain the continued burning of burned materials. Textile raw materials are divided into 4 categories according to the limiting oxygen index (LOI): non-combustible (LOI≥35%) textiles, such as most metal fibers, carbon fibers, asbestos, and boron Fiber, glass fiber, PBO fiber, PBI (polybenzimidazole) fiber, polyimide fiber, etc.; flame retardant (LOI=26-34%) spinningFabrics, such as aramid, fluoron, chlorine, modified acrylic, modified polyester, modified polypropylene, modified vinylon, modified viscose, PPS (polyphenylene sulfide), seaweed fiber, etc.; flammable (LOI≥26%≤34%) textiles, such as polyester, nylon, vinylon, wool, silk, acetate fiber, etc.; flammable(LOI≤20) Textiles, such as polypropylene, acrylic, cotton, linen, viscose fiber, bamboo pulp fiber, soy protein fiber, milk protein fiber, etc.

Although non-flammable fiber is flame retardant cloth,Flame retardant fabricThe effect is good, but most of them are not suitable for wearing or household use, and most of the natural or chemical fibers commonly used by peopleare flammable or flammable , only by modifying or post-finishing such textiles can their flame-retardant fabrics and flame-retardant fabric properties be improved, that is, they will have flame-retardant fabrics. Flame-retardant fabrics have the function of flame-retardant fabrics. Flame-retardant fabric agents can be added to textiles through various channels to achieve flame-retardant cloth and flame-retardant fabric effects. Fiber flame-retardant cloth and flame-retardant fabrics can prevent or reduce the thermal decomposition of fibers, isolate or dilute oxygen, and quickly cool down to terminate burning. In order to achieve the above purpose, generally the flame retardant cloth and flame retardant fabric agent with the function of flame retardant cloth and flame retardant fabric are polymerized through polymerization, blending, Copolymerization, composite spinning, splicing modification, etc. are added to the chemical fiber, or flame-retardant cloth and flame-retardant fabric agent are coated on the fiber using post-finishing methods surface or penetrate into the fiber. In practical applications, a variety of flame-retardant fabrics and flame-retardant fabric agents are often used to synergistically achieve the effect of flame-retardant fabrics and flame-retardant fabrics in two or more ways .

2. Flame-retardant cloth and flame-retardant fabrics and textiles are attracting more and more attention

Since most textiles are flammable and fire hazards are ubiquitous in daily life, the development and application of flame-retardant fabrics, flame-retardant fabric fibers and textiles It has attracted more and more attention from society. For example, the development and performance testing of fire-retardant fabrics, flame-retardant fabric textiles and the formulation of relevant standards, the development status of flame-retardant fabrics and flame-retardant fabric agents at home and abroad And development, flame-retardant fabrics, the practical application of flame-retardant fabric technology in the field of home textiles, etc., have become a hot topic of interest to many people in recent years. It is understood that according to the different uses of textiles, the flame-retardantcloths and flame-retardant fabric regulations formulated by various countries have gradually changed from aircraft interior textile materials, carpets and building decoration materials. Expanded to textiles and clothing, furniture sofa covers,Mattresses and interior decorations, etc., the United Kingdom, the United States, Japan and other countries have also stipulated in legal forms the clothing for women, children, the elderly, and the disabledClothing and pajamas must have flame-retardant cloth and flame-retardant fabric functions, and must be marked on the product. According to China Flame Retardant Fabrics, Secretary General of the Flame Retardant Fabrics Association, National Flame Retardant Fabrics,Flame Retardant FabricsProfessor Zhou Zhengmao of the professional laboratory once introduced that my country’s regulations prohibit flame-retardant cloth and flame-retardant fabrics made of flame-retardant fabrics in public places The performance and flame retardant fabrics, and the standard grades of flame retardant fabrics are clearly stipulated. People hope to live in a safer and more reliable environment. Therefore, flame retardant fabrics , Flame-retardant fabric textile standards and environmentally friendly flame-retardant fabrics, and the production of flame-retardant fabric agents have become important research topics. Someexperts also believe that the development trend of flame retardant fabrics and flame retardant fabric agents will not only improve the performance of flame retardant fabrics and flame retardant fabrics, but also pay more attention to environmental protection and The research and development of brominated flame-retardant fabrics and flame-retardant fabric agent substitutes has become a hot topic, and the halogen-free and ecologicalization of flame-retardant fabrics and flame-retardant fabric agents have been gradually realized. will be one of the future development trends. At present, there is a big gap between my country’s flame-retardant fabrics and flame-retardant fabric agents and developed countries in terms of variety and dosage. With the strengthening of the implementation of flame retardant fabric regulations, my country’s flame retardant fabrics, flame retardant fabric agents and flame retardant fabrics, flame retardant fabricstextile development and development will have more prospects Therefore, it is necessary to improve the development and innovation capabilities and promote the flame-retardant fabric and flame-retardant fabric agent industry in the direction of environmental protection, low toxicity, high efficiency and multi-functionality. develop.

3. Flame retardant cloth, basic concepts of flame retardant fabrics

Materials and structures can be treated with flame-retardant cloth and flame-retardant fabrics to reduce the probability and rate of fire occurrence. Classification and characteristics of flame-retardant fabrics and flame-retardant fabricsmethods: Flame-retardant fabrics and flame-retardant fabric agents are divided into two types: reactive type and additive type according to their usage methods. . Added flame retardant cloth, flame retardant surfaceagent can be divided into organic flame retardant cloth, flame retardant fabric agent and inorganic flame retardant cloth, flame retardant fabric agent. They are mechanically mixed with the resin to give the resin certain flame retardant cloth and flame retardant fabric properties. They are mainly used for polyolefin, polyvinyl chloride, and polystyrene. Waiting for resin. Its advantages are easy to use and wide adaptability, but it has a greater impact on the performance of the polymer. Reactive flame-retardant fabric and flame-retardant fabric agents participate in the reaction as a reaction monomer, making the polymer itself contain flame-retardant fabric and flame-retardant fabric components. Mostly used in polycondensation reactions, such as polyurethane, unsaturated polyester, epoxy resin, polycarbonate, etc. Reactive flame retardant fabrics and flame retardant fabric agents have the advantage of imparting permanent flame retardant properties to the composition or polymer.

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