Polypropylene fiber has the advantages of high strength, good toughness, good chemical resistance and antimicrobial resistance, and low price. Therefore, it is widely used in ropes, fishing nets, safety belts, luggage belts, safety nets, sewing threads, cable sheaths, and geotextiles. , Filter cloth, papermaking felt and paper reinforcement materials and other industrial fields.
The polypropylene woven geotextile made of polypropylene fiber with high strength, acid resistance, alkali resistance, antimicrobial resistance, dry and wet strength, etc. , Railways, etc.) play a reinforcement role, and evenly distribute the bearing load on the geotextile, so that the subgrade settlement is even, and the ground cracks are reduced. When constructing slopes, the use of woven polypropylene geotextile can stabilize the slope, reduce the collapse of the slope, shorten the construction period, and extend the service life of the slope. When carrying large loads, composite geotextiles with woven geotextiles and non-woven fabrics as the matrix can be used. Polypropylene fiber can be used as a filling material for concrete, plaster, etc., to improve the impact resistance, waterproof and thermal insulation of concrete.
With the rapid development of chemical, environmental protection, and new energy industries, polypropylene fiber has a good prospect as a filter material. New technology makes polypropylene fiber high in filtration efficiency, high in strength, light in weight, and stable to chemicals. The filter material has good peelability. Therefore, in the pharmaceutical, chemical, environmental protection, battery and other industries, as functional products such as hydrophilic membranes and ion exchange membranes, it has a good momentum of development and is a new high-tech product that enhances the added value of polypropylene fiber.
(2) Decorative use
Polypropylene fiber has low density (only 65% of polyester fiber), light weight, strong covering power, good abrasion resistance, anti-microbial, anti-moth, and easy to clean. It is especially suitable for manufacturing decorative fabrics. Carpets, sofas and wall coverings and other decorative fabrics and cotton wool made of polypropylene fibers are not only low in price, but also have the advantages of anti-staining, anti-moth, easy washing, and good resilience.
The polypropylene fibers consumed in the decoration and daily use fields are mainly filaments, hollow staple fibers and spunbonded non-woven fabrics, and the products are mainly decorative materials, flakes, toys, etc. for automobiles and households.
Because polypropylene fiber has a low melting point, is easy to wrinkle, and is not easy to dye, the application of polypropylene fiber in the field of clothing has been restricted. With the advancement of spinning technology and the development of modified products, its application in the field of clothing has become increasingly widespread, and clothing products will be the hope for the development of polypropylene.
Polypropylene fiber can be made into knitwear, such as underwear, hosiery, etc.; it can be made into plush products, such as shoe lining, overcoat lining, children's overcoat, etc.; it can be blended with other fibers to make children’s clothing, work clothes, underwear, etc. Fleece fabric and woolen yarn, etc. For example, the development of fine and ultra-fine polypropylene spinning technology overcomes the roughness, waxy feel, and poor hygroscopicity of ordinary polypropylene fibers. The fine special polypropylene fiber has soft, high strength and unique wicking effect, comfortable to wear, good ventilation and moisture conduction effect. It can keep the skin dry when worn next to the body. There is no dampness and stuffiness in summer and no dampness and coldness in winter. Clothing made of it It is 2/5 lighter than pure cotton clothing, and has better thermal insulation properties than wool. It is the best material for making sportswear, mountaineering clothing, military winter clothing and underwear. Pure polypropylene fabrics, cotton cover polypropylene and silk cover polypropylene fabrics processed with fine special polypropylene fibers have been introduced to the market.
(4) Non-woven fabrics and polypropylene fibers for medical and health use
Polypropylene fiber non-woven fabric can be used for disposable sanitary products, such as sanitary napkins, surgical gowns, hats, masks, bedding, diaper fabrics, etc. Sanitary napkins for women, disposable baby and adult diapers have now become common products that people consume daily. In addition, the polypropylene fiber after chemical or physical modification can have multiple functions such as exchange, heat storage, electrical conductivity, antibacterial, deodorization, ultraviolet shielding, adsorption, desquamation, isolation selection, agglutination, etc., and it will become an artificial kidney, Important materials in various medical fields such as artificial lungs, artificial blood vessels, surgical threads, and liquid absorbent gauze. Labor insurance clothing, disposable masks, hats, surgical gowns, bed sheets, pillowcases, mattress materials, etc. all have a growing market.
(5) Other uses
Polypropylene cigarette tow can be used as cigarette filter filler. At present, more than half of the filters used in the middle and low-end cigarettes are made of polypropylene fiber.
Woven bags made of polypropylene fibers have widely replaced jute woven sacks, and have become the most important basic packaging materials for food, industrial raw materials, fertilizers, food, ore and coal, and their form has long moved from traditional pillow-type ladders. Diversified development of barrel type and column type. Because of its low density, light weight, conformability and easy storage, it even replaces some small containers. Such products are in great demand. Polypropylene non-woven fabrics are also used in many packaging fields. For example, polypropylene non-woven fabrics made by melt-blown method can be used for tea bags, insect repellent bags and slow-release packaging for special occasions.
Polypropylene fiber is also very suitable for producing blankets. Brushed blankets are generally made of low-twist polypropylene fibers. This kind of blanket has the properties of heat insulation, insect resistance, easy washing, low shrinkage and light weight, and is suitable for domestic use and military use.
Polyethylene film or plasticized polyvinyl chloride, etc., are coated on polypropylene fiber fabric by melt coating technology to make protective cloth, windproof cloth and mine exhaust pipe. The polypropylene fiber fabric coated with asphalt or tar can be used as the backing of the pond, and other coated fabrics can be used as a retaining cover and temporary rain cover.
Polypropylene fiber has excellent acid and alkali resistance and good tensile strength. The weight of canvas made from it is 1/3 lighter than ordinary canvas. It is not only easy to handle, but also reduces costs, prolongs its service life, and achieves low prices and good quality. It is used to make shoe lining cloth or sports upper, which is durable, light, moisture-proof, breathable, and has no perspiration odor.
