Polypropylene fiber and polypropylene differ in many aspects. The following is a detailed comparison:
Physical properties:
Polypropylene fiber: The physical properties are relatively light, with a density of about 0.90 g/cm³. Polypropylene fiber has high strength, good elasticity, wear resistance, corrosion resistance, and good insulation and warmth retention. However, its hygroscopicity and dyeability are poor, and its heat resistance and aging resistance are relatively poor.
Polypropylene fiber (PPF): It is a synthetic fiber with high strength and elastic modulus, and its strength is higher than that of polypropylene. The density of polypropylene is about 0.91g/cm³, which is the lightest variety of common chemical fibers. The wet strength of polypropylene is basically equal to the dry strength, so it has good wear resistance and is an ideal material for making fishing nets and cables.
Chemical composition:
Polypropylene fiber: It is polymerized by propylene monomers and has a simple polymer structure.
Polypropylene: It is a variant of polypropylene, and its molecular chain is longer than that of polypropylene, and it has higher crystallinity and molecular orientation.
Uses:
Polypropylene fiber: widely used in plastics, packaging materials, medical devices, automotive parts, electronic products, textiles, non-woven fabrics and other fields. Polypropylene fiber concrete has the advantages of light weight, high tensile strength, impact resistance and crack resistance.
Polypropylene: mainly used in the textile industry, such as geotextiles, filter cloths, etc. Due to its excellent properties such as corrosion resistance, high temperature resistance and weather resistance, it can also be used in construction materials and environmental protection industries.
Other characteristics:
Polypropylene has very low hygroscopicity and almost no hygroscopicity, but has wicking ability and can transfer water vapor through the capillaries in the fabric. Polypropylene has good chemical corrosion resistance. Except for concentrated nitric acid and concentrated caustic soda, it has good resistance to acids and alkalis.
In summary, there are obvious differences between polypropylene fiber and polypropylene in physical properties, chemical composition, uses and other characteristics. Polypropylene fiber is used in many fields for its lightness, high strength and corrosion resistance, while polypropylene occupies an important position in the textile, construction and other industries for its high strength, light weight and corrosion resistance.