What are the uses and requirements of polypropylene silk?

The production of polypropylene fiber includes staple fibers, filaments and split membrane fibers.Polypropylene film fiber is made by first making polypropylene into a film, then stretching the film to split it into a mesh formed by the fibrils.Polypropylene fiber is widely used in the manufacture of industrial fabrics, non-woven fabrics, etc.Such as carpets, industrial filter cloths, ropes, fishing nets, building reinforcement materials, oil-absorbing blankets, and decorative cloths.In terms of civil use, polypropylene fiber can be purely spun or blended with wool, cotton or viscose to make various clothing materials.In addition, polypropylene film fiber can be used as a packaging material.

Polypropylene fiber requires the following physical and chemical properties

1．The longitudinal surface of the shape polypropylene fiber is straight and smooth, and the cross-section is circular.

2．The advantage of high-density polypropylene fiber is its light texture. Its density is only 0.91g/cm3. It is a lighter-density variety of common chemical fibers, so polypropylene fiber of the same weight can obtain a higher coverage area than other fibers.

3．Strong stretch polypropylene fiber has high strength, large elongation, high initial modulus and excellent elasticity.So polypropylene has good wear resistance.In addition, the wet strength of polypropylene fiber is basically equal to the dry strength, so it is an ideal material for making fishing nets and cables.

4．Hygroscopicity and dyeing properties The hygroscopicity of polypropylene fiber is very small, almost no moisture absorption, and the moisture recovery rate under general atmospheric conditions is close to zero.However, it has a wicking effect and can transmit water vapor through the capillaries in the fabric, but it does not have any absorption effect by itself.The dyeing properties of polypropylene fiber are poor and the chromatographic spectrum is incomplete, but the method of coloring the raw liquid can be used to make up for the shortcomings.

5．Acid and alkali resistance Polypropylene fiber has good chemical resistance. In addition to concentrated nitric acid and concentrated caustic sodium, polypropylene fiber has good resistance to acid and alkali, so it is suitable for use as a filter material and packaging material.

6．Polypropylene fiber, such as light resistance, has poor light resistance, poor thermal stability, easy aging, and is not resistant to ironing.However, its anti-aging properties can be improved by adding anti-aging agents during spinning.