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Modified Fiber Processing Performance
Oct 10, 2017

Modified Fiber Processing performance

The use of polypropylene staple fiber has gone. Today Xiaobian to tell you about what is the use of polypropylene staple fiber?

Polypropylene staple fiber also has a color change Oh

Polypropylene staple fiber is one of the main synthetic fiber varieties, rich in raw materials, low price, light weight, high thermal stability, hydrophobic and warm and good, and corrosion resistance, anti-mildew, with excellent processing performance and physical and mechanical properties The However, polypropylene has a high degree of crystallinity, and there is no polar group that can interact with the dye molecules, resulting in difficulty in dyeing. One of the methods for making polypropylene fibers to be dyeable and requiring modification of polypropylene is to blend dyeable additives.

The additives used for blending the modified polypropylene are generally polar substances such as polyesters, polyamides, polyolefins, reactive additives and resinous polymers, and at least the following four conditions:

The modifier has good compatibility with polypropylene, which can form matrix-microfiber phase structure during the molding process and produce a large amount of micro-pores to form the channel through which the dye diffuses into the fiber. dyeing

---- Modifier and dye have a good affinity to ensure that the resulting fiber has sufficient dyeing depth and color fastness;

How the polypropylene staple fibers and long fibers are divided

Polypropylene fiber is based on propylene polymerization of isotactic polypropylene as raw materials from the spinning of synthetic fibers in China's trade name for the polypropylene.

Polypropylene fiber can be divided into long fiber, polypropylene short fiber, spunbond nonwovens, meltblown nonwovens and so on.

Polypropylene long fiber can be divided into ordinary long fiber and fine denier long fiber (monofilament fineness ≤ 2.2 dtex, can be used to produce clothing and decoration and some industry filament products. Polypropylene fine fine long fiber gloss, soft, drape Good, small density, suitable for knitting industry, and cotton, viscose silk, silk, spandex, etc. woven into cotton cover C, silk cover C and other products, is the production of high-end sportswear, T-shirts and other ideal materials.

Polypropylene staple fiber production process most of the use of porous, low speed, continuous process, that is, polypropylene short fiber short spinning process. Polypropylene staple fiber and cotton blended, can be made of cotton cloth, bed sheets, that is, fiber and viscose blends can do blankets, polypropylene pure spinning and blended wool, polypropylene blankets, carpets, polypropylene cotton smoke filter. The fiber for sanitary products has a thickness of 1.5 to 2.5 dtex and the thickness of the above-mentioned fabric fibers is 5 to 10 dtex. The length of the fiber is 1.5-200.0 mm, depending on the use of the fiber. The length of the short fiber used for the concrete is 1.5-200.0 mm, and the length of the diaper is generally 40.0 mm and the length of the fabric used for the ground is 60.0 mm.