Polypropylene staple fiber is increasingly widely used in clothing, and can be mixed with a variety of fibers to make different types of blended fabric, after knitting processing can be made into shirts, outerwear, sportswear, socks and so on.

Adsorption and dyeing properties of polypropylene staple fibers

Light quality and good heat preservation; Almost not hygroscopic, but the core absorption ability is strong, hygroscopic and perspiratory effect is obvious; The hygroscopic property of polypropylene is very small, almost no hygroscopic, general atmospheric conditions under the moisture return rate is close to zero. But it has core absorption, can transfer water vapor through the capillary tubes in the fabric, but does not have any absorption effect itself. The dyeing property of polypropylene is poor, the chromatographic is not complete, but the method of stock solution coloring can be used to make up for the deficiency.

Polypropylene staple fiber in the macromolecular structure does not contain chemical groups can be combined with dyes, so dyeing is difficult. Usually, melt coloring method is used to mix pigment preparation and polypropylene polymer uniformly in screw extruder. After melt spinning, colored fibers with high color fastness are obtained. Another method is to copolymerize or graft copolymerize with acrylic acid, acrylonitrile, vinylpyridine, so that the polymer macromolecules can be combined with the polar groups, and then directly dyeing with conventional methods. In the process of polypropylene production, various additives are often added to improve the dyeing, light resistance and fire resistance.

Hai'an County Qinfeng Chemical Fiber Co., Ltd. specializes in production and sales：polypropylene staple fiber, Polyester Staple Fiber, functional polypropylene short fiber, functional polyester staple fiber, hydrophilic polyester staple fiber,  polypropylene, PP staple fiber, polyester staple fiber.