The main development direction of the most popular

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The main development direction of differentiated fibers

1 Imitation natural fiber

synthetic fiber with simulation effect is produced through profiled spinning/development of fine fiber/composite spinning Such as silk like fibers with silk luster/good hand feel and drapability; Wool like fiber with natural curl, elastic/soft luster and good fleece shrinkage of wool; Hemp like fiber with the smoothness and coolness of hemp, etc

2. Endow fiber with new properties

due to its own influence, synthetic fiber is still unsatisfactory in some properties, such as dyeability, hygroscopicity, flame retardancy, etc., which need to be continuously studied and improved. The main methods are: to improve the dyeing properties of synthetic fibers through stock dyeing, blending, copolymerization and compounding. Through grafting modification of hydrophilic monomers of fiber macromolecules, blending with hydrophilic components and forming composite fibers, the fibers have porous structure, surface roughness and profiled fiber cross-section, so as to improve the hydrophilic properties of synthetic fibers

through blending and copolymerization, flame retardants are introduced to improve the thermal stability of fibrous polymers; The flame retardancy of synthetic fibers is endowed by post-treatment, flame retardant finishing of modified fabrics, etc. Through the surface treatment of surfactant, the antistatic property of the fiber can be improved by blending the hydrophilic polymer with the fiber forming polymer. The conductivity of the fibers can also be improved by developing metal fibers, metal coated fibers, conductive resin coated fibers, conductive resin composite fibers, etc. High shrinkage synthetic fibers are produced by special spinning and drawing processes, copolymerization modification, and special-shaped cross-section, so as to improve the fluffy and dyeability of the fibers

3. Endow the fiber with excellent physical and mechanical properties, such as producing synthetic fibers with high strength, high modulus, high temperature resistance, wear resistance, corrosion resistance and other properties. In addition to modifying the existing synthetic fibers to develop the desired properties, people also study and prepare new fibers with special functions, such as high strength, high modulus, short service life, high temperature resistant fibers, corrosion-resistant fibers, elastomer fibers, medical functional fibers, etc

1) high strength and high modulus fibers

are mainly aromatic polyamide series, such as poly (p-benzoyl-p-phenylenediamine) and poly (p-benzoyl-p-aminobenzoamide); High oriented polyolefin fiber series, such as polyethylene and polypropylene. High strength and high modulus fibers are mainly used in bulletproof vests and bulletproof hats, and made into various composite materials for aircraft and aerospace, which can also be clamped); Equipment replaces aluminum alloy; Used in sports equipment, such as racket line, racing clothes, etc

2) carbon fiber

carbon fiber is a fibrous material composed of elemental carbon. Carbon fiber can form composite materials with various matrices in various forms, which can be used to manufacture aircraft parts. It can not only meet the harsh environmental requirements, but also greatly reduce the weight of parts, meet the requirements of aerospace, missile, aviation and other departments, but also can be used in automobiles, golf clubs and so on

3) elastic fiber

such as polyurethane elastic fiber, has the advantages of low relative density, good dyeability, large elongation, good resilience, wear resistance, noise resistance, chemical resistance, including reagents such as manual and automatic pneumatic/hydraulic wedge-shaped clamps, which are mainly used in sock mouths, bras, belts, jackets, medical underwear, etc

4) high temperature resistant fibers

mainly include polytetrafluoroethylene fibers, polyisophthalide isophthalide fibers, polyamide imide fibers, etc

5) plastic optical fiber

according to the composition of optical fiber core, it can be divided into polymethyl methacrylate, polystyrene, hydrogenated polymethyl methacrylate, etc. It is characterized by being free from the influence of static electricity and electromagnetic induction, light weight, good flexibility, large numerical aperture, thick wire diameter by pressing the "f clear/0" key, easy coupling and connection of optical devices, easy to determine the reliability and low price for the transmission of visible light. It can be used in optical instruments, automobiles, household appliances, computers, advertising display devices, daily necessities, toys, etc. (end)

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