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Polypropylene POY spinning machine of the primary physical and chemical properties of polypropylene

1. Morphology The longitudinal surface of polypropylene is smooth and smooth, and its profile is circular.2. Density The biggest advantage of polypropylene is the texture of light, its density is only 0.91g / cm3 is the common chemical fiber in the lightest density varieties, so the same weight of polypropylene fiber than other higher coverage or The surface of the object is large.

3. Strong stretch of high strength polypropylene, elongation, high initial modulus, excellent flexibility. So polypropylene wear resistance. In addition, the wet strength of polypropylene is basically equal to dry strength, so it is the production of fish net, cable aspiration of the material.4. Moisture absorption and dyeing properties of light insulation is good; almost not moisture, but the ability to absorb very strong, moisture absorption and sweating effect; polypropylene moisture absorption is very small, almost non-hygroscopic, the general atmosphere under the premise of regain close to zero. But it has a wicking effect, can be reported through the capillary phenomenon of water vapor in the fabric, but they can not afford to receive any role. Polypropylene dyeing is poor, chromatography is incomplete, but can accept the method of liquid coloring to fill the shortage.5. Acid and alkali resistance Polypropylene has good resistance to chemical corrosion, in addition to concentrated nitric acid, concentrated caustic soda, polypropylene for acid and alkali resistance outstanding performance, so suitable for use as a filter material and packaging materials.6. Light resistance and other poor light resistance of polypropylene, heat does not change the gender is also poor, easy to aging, impatience ironing. But you can go through the process of adding anti-aging agent in the spinning, to improve its anti-aging properties. In addition, the electrical insulation of polypropylene is excellent, but easy to produce static electricity processing.7. High strength polypropylene stretch yarn strength after nylon, but the price is only 1/3 of nylon; made into the same fabric size, wear elasticity is correct, the chemical does not change the sex is good. But the heat does not change the gender difference, intolerance of the sun, to facilitate the aging of brittle damage, this often joined in the polypropylene anti-aging agent.