5.Acid and Alkali Resistance

Polypropylene fiber has good chemical corrosion resistance. Except for concentrated nitric acid and concentrated caustic soda (sodium hydroxide), it exhibits strong resistance to acids and alkalis, making it suitable for use as filter materials and packaging materials.

6.Light Resistance and Other Properties

Polypropylene fiber has poor light resistance and thermal stability; it is prone to aging and cannot withstand ironing. However, its anti-aging performance can be improved by adding anti-aging agents during the spinning process. In addition, it has good electrical insulation, but is prone to generating static electricity during processing.

7.High Strength

The strength of polypropylene textured yarn is second only to that of nylon (polyamide fiber), while its price is only 1/3 of nylon. Fabrics made from it have stable dimensions, good wear resistance and elasticity, as well as excellent chemical stability. However, it has poor thermal stability, is not resistant to sunlight, and tends to age and become brittle. For this reason, anti-aging agents are often added to polypropylene fiber.