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Modified Fiber Deformed Fiber
Jun 08, 2017

Modified Fiber Deformed fiber

Chemical fiber obtained by chemical or physical means. The physically deformed fibers have shaped fibers, deformed fibers and composite fibers. Chemical modified fibers are grafted fibers, copolymer fibers and chemically treated denatured fibers.

Modified fiber, also known as denatured fiber.

Refers to the chemical or physical means to make some of the properties of conventional chemical fiber varieties (such as hygroscopicity, dyeing, antistatic properties, flame retardancy, etc.) to improve the derivative of a series of new fibers, such as modified viscose Fibers, modified polyester fibers, modified polyacrylonitrile fibers, modified polyvinyl alcohol fibers, and the like.

Modification method editing

Modification methods are: (1) chemical methods, such as copolymerization or graft copolymerization and other methods; (2) physical methods, such as blending or physical addition of certain modifiers and other methods. These methods have been widely used to successfully develop new varieties of modified chemical fibers such as high humidity modulus viscose fibers, cationic dyeable polyester fibers (CDP fibers, ECDP fibers), acrylonitrile-vinyl chloride Copolymer fibers (nitrile chlorinated), water-soluble polyvinyl alcohol fibers, and the like.

① graft fiber: fiber in the macromolecule chain through the active link from the lateral lead to the polymer branch of the fiber. Adhesion of cotton fiber or viscose fiber to methyl, ethyl or benzyl to form cellulose ether reduces the water absorption of the fiber and improves the chemical stability of the fiber, flame retardancy, light stability, heat resistance and Electrical insulation and so on. Cellulose and a small amount of polymerizable monomer are copolymerized in the form of a solution, and a synthetic polymer branch is introduced into the cellulose backbone to obtain graft copolymerized cellulose fibers to improve the wrinkle resistance of the cellulose fibers.

② copolymer fiber: by binary or ternary monomer in a certain conditions of copolymerization of the fiber. Silk filaments (proteins) and a small amount of acrylonitrile copolymerization can be obtained acrylonitrile grafted fiber. Pure polyacrylonitrile fiber practical value is poor, but with the vinyl acetate and other monomer copolymerization of the fiber, the physical and mechanical properties and dyeing properties than pure polyacrylonitrile fiber is excellent.

③ chemical post-processing modified fiber: polyester by 1 ~ 1.5% naphthalene sulfonic acid alkali metal salt and formaldehyde condensate solution can be obtained anti-pilling; and alkali solution treatment, you can have a similar nature of natural silk; in the heat treatment In the process of adding phosphorus or halogen compounds can be obtained flame resistance.