Polypropylene staple fiber is mainly used in polypropylene needled carpet, which increases the elasticity and recovery rate and softness of the carpet, so that the carpet can achieve a more comfortable effect. Polypropylene staple fiber has superior moisture conductivity and fast drying, good carding and spinning performance, can produce soft and appropriate toughness of fabric, fabric light weight, good warmth, delicate feel, comfortable to hold, acid and alkali resistance. At the same time, it has the advantages of fast melting speed, good filling, good sound insulation and so on. Polypropylene staple fiber is widely used in clothing processing, automotive interior, carpets, tapestries, decorative fabrics, all kinds of non-woven fabrics, geotextiles, engineering, wool and other fields.

The physical and mechanical properties of polypropylene staple fiber are characterized by high strength (short fiber is 4 ~ 6g/denier, filament is 5 ~ 8g/denier), wet strength and dry strength are basically the same, the specific gravity is small (0.91), wear resistance and corrosion resistance.

Polypropylene production includes staple, filament and split film fibers. Polypropylene membrane fibers are made by making polypropylene into a film, and then stretching the film to split it into a network of fibril.

What are the physical properties of polypropylene staple fiber ?

Physical characteristics:

1. The vertical surface of PP is straight and smooth, and the cross-section is circular.

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

3. Strong elongation polypropylene staple fiber has the characteristics of high strength, large elongation, high initial modulus and good elasticity. So polypropylene wears well. In addition, the wet strength and dry strength of polypropylene are basically equal, and it is an ideal material for making fishing nets and cables.

4. Moisture absorption, dyeing, light weight, good heat preservation; Almost no moisture absorption, but the core moisture absorption ability is very strong, moisture absorption and sweating effect is obvious; The hygroscopicity of polypropylene is very small, almost no hygroscopicity, and the hygroscopicity under general atmospheric conditions is close to zero. But it has a core suction that can transport water vapor through the fabric, but doesn't absorb any of its own water vapor. Pp staining is poor and the chromatography is incomplete, but it can be made up by liquid coloring method.

5. Acid and alkali resistance pp has good chemical corrosion resistance, in addition to concentrated nitric acid, concentrated caustic soda, pp has good acid and alkali resistance, so it is suitable for filtration materials and packaging materials.

6. Light resistance and other polypropylene short fiber light resistance is poor, poor thermal stability, easy to aging, ironing. However, the anti-aging properties of the fibers can be improved by adding anti-aging agents in the spinning process. In addition, the electrical insulation of polypropylene is good, but it is easy to generate static electricity during processing. Due to the small thermal conductivity of polypropylene, good thermal insulation.

7. The strength of high-strength polypropylene filament is second only to polyamide, but the price is only 1/3 of polyamide; The fabric is stable in size, good in wear resistance and elasticity, and good in chemical stability. However, poor thermal stability, sun resistance, easy aging brittle damage, so often add anti-aging agents in polypropylene.

Hubei Botao Synthetic Fiber Co., Ltd. was founded in October 2000, located in Jingmen City, Hubei Province, specializing in the production and sales of polypropylene, polyester, composite fiber, polylactic acid staple fiber, the products are mainly used in non-woven fabrics, automotive interior, geotextiles, carpets, filtration and other industries. The company has introduced a number of imported fiber production lines, with fixed assets of more than 300 million yuan, an annual output of 100,000 tons of polypropylene staple fiber, 20,000 tons of polyester staple fiber, 10,000 tons of composite fiber, and an annual output value of over 800 million yuan. Focusing on the field of synthetic fiber for more than 20 years, Botao synthetic fiber has obtained excellent market results and extensive honors with the mentality of excellence and integrity development.