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What are the physical properties of polypropylene short fibers?

Polypropylene short fibers are mainly used in polypropylene needle punched carpets, increasing the elasticity, recovery rate, and softness of carpets, making them more comfortable. Polypropylene short fibers have superior moisture conductivity and quick drying properties, good carding and spinning performance, and can produce soft and moderately resilient fabrics. The fabric is lightweight, has good warmth retention, delicate hand feel, comfortable to hold, and resistant to acid and alkali. It also has advantages such as fast melting speed, good filling ability, and good sound insulation and heat insulation performance. Polypropylene short fibers are widely used in clothing processing, automotive interior, carpets, tapestries, decorative fabrics, various non-woven fabrics, geotextiles, engineering, wool and other fields.

The physical and mechanical properties of polypropylene short fibers are characterized by high strength (4-6g/denier for short fibers and 5-8g/denier for long fibers), similar wet and dry strength, low specific gravity (0.91), good wear resistance and corrosion resistance.

Polypropylene production includes short fibers, long fibers, and split film fibers. Polypropylene film fibers are made by making polypropylene into a thin film, then stretching the film to split it into a network of original fibers.

What are the physical properties of polypropylene short fibers?

Physical properties of polypropylene short fibers:

1. The longitudinal surface of PP is straight and smooth, with a circular cross-section.

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

3. Strong elongation polypropylene short fibers have the characteristics of high strength, high elongation, high initial modulus, and good elasticity. So polypropylene is wear-resistant. In addition, the wet strength and dry strength of polypropylene are basically equal, making it an ideal material for making fishing nets and cables.

4. Moisture absorption, dyeing, lightweight, and good insulation properties; Almost no moisture absorption, but the core has strong moisture absorption ability and significant moisture wicking effect; Polypropylene has very low moisture absorption, almost no moisture absorption, and its moisture absorption rate under general atmospheric conditions is close to zero. But it has a core suction that can transport water vapor through the fabric, but it will not absorb any of its own water vapor. Poor Pp staining and incomplete chromatography can be compensated for by liquid staining.

5. Acid and alkali resistant PP has good chemical corrosion resistance. In addition to concentrated nitric acid and concentrated caustic soda, PP has good acid and alkali resistance, making it suitable for use as filter and packaging materials.

6. Poor light resistance and thermal stability compared to other polypropylene short fibers, making them prone to aging and ironing. However, adding anti-aging agent in the spinning process can improve the anti-aging performance of the fiber. In addition, polypropylene has good electrical insulation, but it is prone to generating static electricity during the processing. Due to the low thermal conductivity and good insulation properties of polypropylene.

7. High strength polypropylene filament has a strength second only to polyamide, but its price is only one-third of that of polyamide; The fabric produced has stable dimensions, good wear resistance and elasticity, and good chemical stability. However, due to poor thermal stability, sun resistance, and easy aging and brittle damage, anti-aging agents are often added to polypropylene.

Hubei Botao Synthetic Fiber Co., Ltd. was founded in October 2000 and is located in Jingmen City, Hubei Province. It specializes in the production and sales of polypropylene, polyester, composite fibers, and polylactic acid short fibers. Its products are mainly used in industries such as non-woven fabrics, automotive interiors, geotextiles, carpets, and filters. The company has introduced multiple imported fiber production lines, with fixed assets exceeding 300 million yuan, and an annual output of 100000 tons of polypropylene short fibers, 20000 tons of polyester short fibers, and 10000 tons of composite fibers, with an annual output value exceeding 800 million yuan. Focusing on the field of synthetic fibers for more than 20 years, Botao Synthetic Fiber has achieved excellent market results and extensive honors with a mindset of continuous improvement and honest development.

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