With the development of spandex production industry, its product system continues to improve. On the basis of conventional materials, according to different application fields, the product varieties are continuously refined and differentiated, and a variety of differentiated spandex fiber products are derived.
In view of the poor chlorine resistance of Spandex Products, calcium carbonate, hydrotalcite and other additives are added in the spinning process to overcome the shortcomings of conventional elastic fibers such as easy corrosion, yellowing and reduced elasticity in chlorine containing laundry agents, swimming pools and other active chlorine water.
Heat resistant spandex is a material with strong heat resistance, which greatly reduces the hard segment degradation of elastic fibers at high temperature. In high temperature dyeing and multiple dyeing, its elasticity and strength are not significantly reduced. When blended with polyester, it is dyed several times at about 140t, showing excellent dyeing performance. Improving the heat resistance of elastic fibers mainly starts from the chemical composition of fibers and improving the interaction between fibers, adding additives in the production and polymerization process of elastic fibers, or changing the air volume of the channel and the winding mode in the spinning process to improve the process flow.
Bacteriostatic spandex not only maintain the normal physical properties of elastic fibers, and greatly improving the antibacterial properties. Its production mainly adopts multi-layer spinning, wrapping antibacterial materials in the outer layer of elastic fiber, or introducing particles and genes with antibacterial properties into the fiber to improve the antibacterial ability. It can be used in wound dressings, medical equipment and other medical and health fields, and also has many applications in daily life. A variety of bacteriostatic products meet the bacteriostatic requirements of clothing.
The spandex fabric can be dyed with weak acid dyes to obtain bright colors and excellent color fastness. The dyeing performance of conventional elastic fibers is poor, and there is a small amount of amino at the end of the fiber molecular chain, which can provide a dye base for acid dyes. In view of this characteristic, additives are added in the process of fiber production, polymerization and spinning, which greatly increases the amount of amino groups in the fiber, provides a dye base for acid dyes, and then the material is prepared. Therefore, on the premise of maintaining the excellent characteristics of elastic fibers, it meets the increasingly high requirements of consumers for fabric color.
Degradable spandex is a new low-carbon environmental protection product launched in the current social environment of energy conservation, consumption reduction and recycling. On the basis of maintaining the original excellent elasticity of the product, it can be degraded and is widely used in diapers, bandages and other medical and health supplies.
With people's pursuit of fashion trends and comfort and the upgrading of consumption concepts, the overall market demand of spandex is increasing. In the near future, spandex fiber will usher in further development, and the market will also usher in its own upgrading and evolution.
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