(1) Light
Polypropylene fiber density of 0.90-0.92 g / cm3, in all chemical fiber is the lightest, 20% lighter than nylon, 30% lighter than polyester, 40% lighter than viscose fiber, so it is suitable for winter clothing Flocking or ski suits, mountaineering suits and other fabrics.

(2) high strength, good flexibility, wear resistance, corrosion resistance
Polypropylene high strength (dry, wet the same), is the manufacture of fishing nets, cables ideal material; wear resistance and good elasticity, strength and polyester and nylon similar to the rebound rate with nylon, wool, Polypropylene fiber's dimensional stability is poor, easy to play ball and deformation, anti-microbial, non-borer; chemical resistance is superior to the general fiber.

(3) with electrical insulation and warmth
Polypropylene fiber resistivity is very high (7 × 1019Ω.cm), thermal conductivity is small, compared with other chemical fibers, polypropylene electrical insulation and warmth of the best, but easy to produce static electricity processing.

(4) heat resistance and aging resistance
Polypropylene fiber low melting point (165 ~ 173 ℃), the stability of light and heat is poor, so the heat resistance of polypropylene, anti-aging, impatience ironing. But can be added by spinning in the anti-aging agent to improve its anti-aging properties.

(5) poor hygroscopicity and dyeing
Polypropylene fiber moisture absorption and dyeing in the chemical fiber is the worst, almost no moisture, the moisture regain less than 0.03%. Fine-denier polypropylene has a strong wicking effect, water vapor can be eliminated through the capillary in the fiber. Made of clothing, clothing, comfort is good, especially ultra-fine polypropylene fibers, due to surface area increases, faster transfer of sweat, the skin to maintain comfort. As the fiber is not moisture absorption and shrinkage is small, polypropylene fabric with easy washable and quick drying characteristics.

Polypropylene dyeing is poor, light color, poor color fastness. Ordinary fuel can not make it dyed, most of colored polypropylene is the use of spinning before coloring production. Can be used to color liquid, fiber modification, in the melt spinning before blending fuel complexing agent.