There are significant differences between polypropylene high strength yarn and ordinary polypropylene yarn, and the two are not similar products. The differences are illustrated in the following dimensions:
First, raw materials and production process
Polypropylene high strength yarn selection of high-molecular weight, high-specification polypropylene particles as raw materials, through the special spinning process (such as two-step or one-step method) made, the breaking strength is usually greater than 6cN/dtex, some products can reach more than 8cN/dtex. Ordinary polypropylene filament is mostly produced by conventional polypropylene particles, which has low strength and relatively simple process requirements.
2. Comparison of performance indicators
Strength and wear resistance
The breaking strength of polypropylene high-strength filament is 1.5-2 times that of ordinary polypropylene filament, and has higher wear resistance and impact resistance, which is suitable for high-load scenarios (such as industrial suspenders, conveyor belts, etc.). Ordinary silk is mostly used in areas with low strength requirements (such as clothing and decorations).
Chemical resistance
High strength wire to acid, alkali, solvent and seawater corrosion resistance is stronger, suitable for metallurgy, environmental protection and other harsh environment; Ordinary silk is also corrosion resistant, but the long-term stability is weak.
Density and hygroscopicity
Both have a density of 0.91g/cm (lighter than water), but high strength filaments are less hygroscopic and maintain stable performance even in humid environments.
3. Differences in application fields
Polypropylene high strength filament:
Widely used in industrial fields, such as safety net, flexible container bag, geotextile, high pressure fire hose, woven filter cloth, cable and so on. Its high strength and weather resistance make it an ideal material to replace polyester and nylon.
Ordinary polypropylene filament:
Mainly used in civilian fields, such as carpets, decorative cloth, clothing (such as sports underwear, socks), hygiene products (such as diapers, operating clothes) and so on.
4. Industry standards and classification
According to product performance, polypropylene filament is clearly divided into industrial grade and civilian grade. Industrial high strength filaments are subject to higher technical standards (such as linear density deviation, strength CV value, etc.) and undergo rigorous quality testing. For example, the first grade breaking strength of high-strength polypropylene yarn needs to be ≥6.35CN/DTEX, while ordinary silk has no such mandatory requirements.
5. Market positioning and user cognition
Some industry information or non-professional statements may refer to the two types of products as "polypropylene fiber", but from the technical definition, production specifications to practical applications, high-strength silk and ordinary silk are clearly distinguished. Professional manufacturers (such as Xuzhou Heping Chemical fiber, Jiangyin Jinmeng Textile, etc.) will mark the "high strength" attribute in the product description, and emphasize that it is suitable for industrial scenarios.
In summary, polypropylene high-strength yarn is essentially different from ordinary polypropylene yarn in raw materials, performance, use and other aspects, and its "high-strength" characteristics make it an important material in the field of industrial textiles, rather than ordinary silk can be replaced.
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://www.gdytzz.com
Domestic business: He Shanbin
Tel: 0763-6812222
Fax: 0763-6813888
Mobile: 133 5289 9993
Foreign business: Landy
Tel: 0763-6813199
Mobile: 135 5399 2535
