Polypropylene high strength yarn, as an outstanding synthetic fiber material, is widely used in the industrial field. Mastering its identification methods is of great significance for material selection and application.
Observation of Appearance Features
Polypropylene high-strength filament appears as long filaments, with a straight and smooth longitudinal surface and a circular cross-section. It is light in texture, with a density of only 0.91g/cm, making it one of the synthetic fibers with the lowest density among all. By observing the shape and feel of the fibers, it is possible to initially determine whether it is polypropylene high-strength filament. Its surface is smooth, with moderate gloss and a refreshing hand feel. These features help distinguish it from other fibers.
Identification by combustion method
The burning method is an effective way to identify high-strength polypropylene filaments. When the fibers are brought close to the flame, polypropylene will melt and shrink rapidly. It melts and burns upon contact with flames. After leaving the flame, it continues to burn and emits black smoke. The upper part of the flame is yellow and the lower part is blue. When burning, it gives off a distinct petroleum smell. The ashes after burning are hard, round, light yellowish-brown granules that break easily when pinched by hand. This burning characteristic is significantly different from that of other fibers. For instance, polyester emits a sweet and fragrant smell when burning, while nylon has an amino smell.
Physical performance test
Polypropylene high-strength filament has excellent physical properties. Its breaking strength can reach 70.6cN/tex, featuring high strength and good wear resistance. One of the notable features of polypropylene is that its wet strength is basically the same as its dry strength. The elongation is between 15% and 25%, and the rebound rate is excellent. In addition, polypropylene hardly absorbs moisture and its moisture regain is close to zero. This characteristic enables it to maintain stable performance even in a humid environment.
Chemical stability test
Polypropylene high-strength filament has excellent corrosion resistance to acids, alkalis and other chemical substances. Except for concentrated nitric acid and concentrated caustic soda, it has good resistance to most acids and bases. This chemical stability enables it to be widely applied in industries such as chemical engineering and environmental protection. Its chemical corrosion resistance can be verified through a simple acid and alkali immersion test.
Application field verification
Polypropylene high strength yarn is widely used in safety net belts, flexible bulk bags, geotextiles, industrial filter cloths, ropes and cables, high-pressure fire hoses and other fields. Its light weight, high strength, wear resistance and corrosion resistance make it an ideal material to replace polyester and nylon. By understanding the specific application scenarios of the product, it can assist in determining whether it is a high-strength polypropylene filament.
Mastering these identification methods can accurately identify high-strength polypropylene filaments, providing a reliable basis for material procurement and usage. In practical applications, it is recommended to make a comprehensive judgment by combining multiple methods to ensure the accuracy of the identification results.
Guangdong Qingyuan Yitong Weaving Co., Ltd. specializes in the production and sales of pp yarn, polypropylene high strength yarn, polypropylene light body yarn, polypropylene high strength yarn, 300D polypropylene polypropylene yarn, polypropylene network yarn, polypropylene twist yarn, 300D polypropylene high strength yarn, 1200D polypropylene high strength yarn, anti-aging polypropylene yarn, anti-static polypropylene yarn, Yitong polypropylene twist yarn, etc.
Qingyuan Yitong weaving Co., LTD
Website: http://m.mlj21.cn
Domestic business: He Shanbin
Tel: 0763-6812222
Fax: 0763-6813888
Mobile: 133 5289 9993
Foreign business: Landy
Tel: 0763-6813199
Mobile: 135 5399 2535
