Advantages and Disadvantages of Polypropylene Fibre
Light weight, strength and chemical resistance against poor heat resistance and difficult dyeing.
(1) Light weight
The density of polypropylene fiber is 0.90-0.92 g/cm3, which is the lightest among all chemical fibers, 20% lighter than nylon, 30% lighter than polyester and 40% lighter than viscose fiber. Therefore, it is suitable for the floc packing or ski suit,mountaineering clothing and other fabrics of winter clothes.
(2) High strength, good elasticity, wear resistance and corrosion resistance
Polypropylene fiber has high strength (same in dry and wet state) and is an ideal material for fishing net and cable; Its strength is similar to that of polyester and nylon, and its resilience is comparable to that of nylon and wool, much higher than that of polyester and viscose fibers; Polypropylene fiber has poor dimensional stability, easy pilling and deformation, anti microbial and non wormhole; The resistance to chemicals is better than that of ordinary fibers.
(3) It has electrical insulation and thermal insulation
Polypropylene fiber has high resistivity and low thermal conductivity. Compared with other chemical fibers, polypropylene fiber has the best electrical insulation and warmth retention, but it is easy to produce static electricity during processing.
(4) Poor heat and aging resistance
The melting point of polypropylene fiber is low (165-173 degrees Celsius), and the stability of light and heat is poor. Therefore, the heat resistance and aging resistance of polypropylene fiber are poor, and they are not iron resistant. But aging resistance can be improved by adding anti aging agent when spinning.
(5) Poor hygroscopicity and dyeability
The hygroscopicity and dyeability of polypropylene fiber are the worst among the chemical fibers, almost no hygroscopicity, and its moisture regain is less than 0.03%. The ultra-fine polypropylene fiber has strong wicking effect, and the water vapor can be removed through the capillary in the fiber. After the garment is made, the comfort of the garment is better, especially the superfine polypropylene fiber. Because of the increase of the surface area, it can transfer sweat faster and keep the skin comfortable. Polypropylene fabric is easy to wash and dry due to its non hygroscopicity and small shrinkage
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