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Nylon 6 DTY TWISTED

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Nylon 6 DTY TWISTED

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Main physical and chemical properties of nylon DTY twisting

1. Form The longitudinal surface of nylon is straight and smooth, and the cross section is round. Nylon is alkali-resistant and not acid-resistant. In inorganic acid, the amide bond on the nylon macromolecule will break.

2. Strength and abrasion resistance Nylon has high strength, large elongation and excellent elasticity. The breaking strength is about 42~56cN/tex, and the breaking elongation is 25%~65%. Therefore, nylon has excellent abrasion resistance and ranks first among common textile fibers. It is an ideal material for making abrasive products. However, nylon has a small initial modulus, is easy to deform, and its fabric is not crisp.

3. Hygroscopicity and dyeability The hygroscopicity of nylon is the better among common synthetic fibers, and the moisture regain rate is about 4.5% under general atmospheric conditions. In addition, nylon has good dyeability and can be dyed with acid dyes, disperse dyes and other dyes.

4. Light resistance and heat resistance, etc. Because the end groups of nylon macromolecules are more sensitive to light and heat, which causes the nylon to turn yellow and become brittle, the light resistance and heat resistance of nylon are poor, and it is not suitable for making outdoor fabrics. In addition, nylon is resistant to corrosion, mildew, and insects. Stretched twisted yarn (nylon yarn twisted) is called DT (D raw Tw is t). Take POY as the original yarn by drafting and twisting machine, drawing mainly and giving a small amount of twist to get DT. 100D/36F, 150D/36F, 50D/18F, etc. These are the expression methods of fiber specifications. The data above the diagonal line indicates the fiber denier, D is the fiber's denier unit "denier", that is, in the standard state, it is expressed by the weight of a 9000-meter long fiber, such as 100 grams of weight is 100 denier (100D); diagonal line The data below indicates the number of holes in the spinneret used during spinning, and also the number of monofilaments that the yarn of this specification has, such as 36F, which means that the spinneret used during spinning has 36 holes, that is, the fiber has 36 Root monofilament.

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