1 . Polypropylene: Also known as polypropylene fiber is one of the most used fibers in nonwoven production.
2 . Morphology: The vertical surface of polypropylene is straight and smooth, and the section is round, Y-shaped or triangular.
3 . Density: The biggest advantage of polypropylene is its light texture, its density is only 0.9-0.96g/cm3. It is the lightest density among common chemical fibers, 20% lighter than polyamide fiber, 30% lighter than polyester fiber, and more viscous than The fiber is 40% lighter, so polypropylene with the same weight can get higher coverage than other fibers.
4 . Extensibility: Polypropylene has high strength (strength 0.5cN/dtex-0.7cN/dtex), large elongation, high initial modulus, excellent elasticity, so polypropylene wear resistance is good. In addition, the wet strength of polypropylene is almost equal to dry strength, so it is an ideal material for making fishing nets and cables.
5. Hygroscopicity and dyeing: Polypropylene has low hygroscopicity, almost no hygroscopicity, and the moisture regain is close to zero under normal atmospheric conditions. However, it has a wicking effect and can transmit water vapor through the capillary in the fabric, but does not exert any absorption by itself. Polypropylene has poor dyeability and incomplete chromatograms, but it can be supplemented by the addition of color masterbatch co-spinning.
6 . Acid and Alkali Resistance: Polypropylene has better chemical resistance. In addition to concentrated nitric acid and concentrated caustic soda, polypropylene has good resistance to acids and alkalis, so it is suitable for use as a filter material and packaging material.
7. Lightfastness: Polypropylene has poor light resistance, poor thermal stability, aging, and resistance to ironing, but it can improve anti-aging properties by adding anti-aging agents during spinning.
8 . Flame Retardant, Stain Resistance, Electrical Insulation: Flame retardancy of polypropylene is very good, but it is easy to produce static electricity during processing, strong stain resistance, the amount of dust is only equivalent to wool, easy to clean, easy to dry, electrical insulation properties So good.
   9 . Anti-microbial properties: Good anti-microbial properties, no mildew, no skin allergies, good hygienic properties.