What is polypropylene yarn, what advantages and attributes does it have, and explore it together!

With regard to the introduction of polypropylene yarn, we start with its biggest point. The biggest advantage is its light texture, and its density of only 0.91g/cm3 is the lightest density among common chemical fibers, so polypropylene with the same weight can get higher coverage than other fibers. Strong stretch Polypropylene has high strength, large elongation, high initial modulus, and excellent elasticity. Therefore, the polypropylene wear resistance is good; in addition, the wet strength of polypropylene is basically equal to the dry strength, so it is an ideal material for making fishing nets and cables; the hygroscopicity and the dyeing properties are light and good in warmth; almost no moisture absorption, but the wicking ability is very strong. The effect of moisture absorption and perspiration is obvious; the moisture absorption of polypropylene is very small, and it is almost non-hygroscopic, and the moisture regain rate under normal atmospheric conditions is close to zero. In addition, polypropylene has good electrical insulation, but static electricity is easily generated during processing. Due to the small thermal conductivity of polypropylene, good thermal stability; high strength polypropylene elastic filament strength is second only to nylon, but the price is only 1/3 of nylon; fabric made of stable dimensions, wear resistance and elasticity is not bad, good chemical stability.

Polypropylene yarns also have very different chemical molecules and are made of polypropylene fibers. Polypropylene has good heat resistance, and the product can be disinfected and sterilized at a temperature of 100° C. or higher, and is not deformed at 150° C. under the condition of no external force. The embrittlement temperature is -35°C, and embrittlement will occur below -35°C. Cold resistance is inferior to polyethylene. The report of the glass transition temperature of polypropylene is 18qC, 0qC, 5°C, etc. This is also due to the fact that different samples are used, and the ratio of the crystalline phase to the amorphous phase is different, so that the amorphous chain length in the molecular chain is different. Caused. The melting temperature of polypropylene is about 40-50% higher than that of polyethylene, about 164-170°C, and 100% isotactic polypropylene melting point is 176°C. Polypropylene has good chemical stability. It is stable to other chemical agents except it can be eroded by concentrated sulfuric acid and concentrated nitric acid, but low molecular weight aliphatic, aromatic and chlorinated hydrocarbons can soften polypropylene. Swelling, while its chemical stability with the increase in the degree of crystallinity has increased, so polypropylene is suitable for the production of a variety of chemical pipelines and accessories, anti-corrosion effect is good.

Because the performance and advantages of polypropylene yarns are obvious, the application fields of polypropylene yarns are gradually expanding, and the market potential is also emerging day by day.