What are the properties and characteristics of polypropylene rope?

2023-11-30 11:06:55

Civil use: It can be spun purely or blended with wool, cotton or viscose to make various clothing materials. It can be used to knit various knitted products such as socks, gloves, knitted sweaters, knitted pants, dishcloths, mosquito nets, quilts, thermal fillers, diapers, etc.

Industrial uses: carpets, fishing nets, canvas, hoses, concrete reinforcement materials, industrial fabrics, non-woven fabrics, etc. Such as carpets, industrial filter cloths, ropes, fishing nets, building reinforcement materials, oil-absorbing blankets and decorative fabrics, etc. In addition, polypropylene film fiber can be used as packaging materials.

chemical properties

The name is polypropylene fiber. It melts and shrinks when near the flame. It is flammable. It burns slowly away from the fire and emits black smoke. The upper end of the flame is yellow and the lower end is blue. It exudes the smell of petroleum. After burning, the ashes are hard round light yellow-brown particles and are easily broken by hand twisting. .

physical nature

1. Status: The longitudinal surface of polypropylene is straight and smooth, and the cross-section is round.

2. Density The advantage of polypropylene is its light texture. Its density is only 0.91g/cm3, which is the lightest type of chemical fiber. Therefore, polypropylene with a special weight can obtain a higher coverage area than other fibers.

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

4. It has light hygroscopicity and dyeing properties and good warmth retention. It is indeed not hygroscopic, but has strong wicking ability and obvious moisture absorption and perspiration effect. Polypropylene has very little hygroscopicity and is indeed not hygroscopic. The moisture regain rate under individual 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 absorbing effect. Polypropylene has poor dyeability and incomplete chromatography, but it can be made up for by using liquid dyeing.

5. Acid and alkali resistance: Polypropylene has good chemical resistance. In addition to concentrated nitric acid and concentrated caustic soda, polypropylene has excellent resistance to acids and alkali, so it is suitable for use as filter materials and packaging materials.

6. Light resistance, etc. Polypropylene has poor light resistance, poor thermal stability, is prone to aging, and is not resistant to ironing. However, its anti-aging performance can be improved by adding anti-aging agents during spinning. In addition, polypropylene has good electrical insulation, but static electricity is easily generated during processing. Because polypropylene has a small thermal conductivity, it has good warmth retention properties.

7. High strength: The strength of polypropylene elastic yarn is second only to nylon, but the price is only 1/3 of nylon. The size of the fabric remains unchanged, the wear resistance is good, the elasticity is good, and the chemical stability is good. However, it has poor thermal stability, is not resistant to sunlight, and is prone to aging and brittleness. For this reason, anti-aging agents are often added to polypropylene.