Compared with leather materials, textile materials are widely concerned by consumers and manufacturers for their breathability, environmental protection and low cost. According to statistics, each car consumes an average of 42M2 (50 square yards) of textile materials for interior decoration (seats, roofs, side panels, carpets, luggage compartments, etc.), reinforcements, linings, underlay fabrics, tires. , belts, air bags, mufflers and insulation equipment.

Automotive textiles are mainly organic fabrics, knitted fabrics, nonwovens and fiber composites. Polypropylene staple fiber can also be used in automotive interiors.

Polypropylene staple fiber characteristics and uses:

Relative Density: Polypropylene is a relatively low density of all synthetic fibers, about 0.91 g/cm3, so it is lighter in weight and can cover a larger area per unit weight of fiber.

Strength: The strength of polypropylene is similar to that of high-strength polyester fiber and nylon in synthetic fiber, but the strength does not change in wet state, which is better than nylon.

Abrasion resistance and corrosion resistance: The flatness of polypropylene is second only to nylon, but it is slightly less resistant to sharpening. Corrosion resistance: Significant stability to inorganic acids and bases.

Hygroscopicity and dyeability: Polypropylene is almost non-hygroscopic, its moisture regain is less than 0.03%, the fabric shrinkage rate is small, and fine-denier polypropylene has a strong wicking effect. The dyeing fastness is poor, and ordinary fuel can not be dyed. Most of the colored polypropylene is produced by pre-spinning coloring.

Electrical insulation and thermal insulation: polypropylene has high electrical resistivity (7×10 Ω.cm) and low thermal conductivity. Compared with other chemical fibers, polypropylene has good electrical insulation and thermal insulation, but it is easy to generate static electricity during processing.

Heat resistance and aging resistance: Polypropylene has a low melting point (165~173°C) and poor stability to light and heat. Therefore, polypropylene has poor heat resistance and aging resistance and is not resistant to ironing. However, it is possible to improve the anti-aging property by adding an anti-aging agent at the time of spinning.

In addition, polypropylene, like other synthetic fibers, is less prone to mold, rot, and not afraid of insects.

Therefore, polypropylene staple fiber products are light and wear-resistant, which is very suitable for use in automotive interiors.