Now, with the continuous advancement of technology, polypropylene fiber has developed rapidly after its development in the 1970s and 1980s, and its performance has been continuously improved, and now it can compete with polyester, even better than polyester. Polyester filament has excellent performance and has become the world's first chemical fiber variety. It currently accounts for more than a quarter of the world's chemical fiber production, but compared to the development of polypropylene and its performance and function, we will proceed Which one is more developmental advantage?
1. Comparison of performance between polypropylene and fine polyester filaments for clothing Although the chemical structure of polypropylene and polyester is quite different - polypropylene is a homopolymer obtained by free radical polymerization of propylene, and polyester is terephthalic acid. The copolymer obtained by polycondensation reaction with ethylene glycol, but the fiber obtained by the spinning process can meet the requirements of taking. The requirements for the use of textile fibers are: first, to have suitable physical and mechanical properties; secondly, the appearance and wearing comfort of the woven fabric, such as stiffness, softness, no ball, water absorption, and breathability. Compared to polypropylene fine denier, it is better than polyester.
2. The initial elastic modulus indicates the resistance of the fiber to small extensions. On the garment, it reflects the stiffness of the fiber when it is small or small. In general, the larger the initial modulus, the smaller the fiber deformation and the better the rigidity. Polypropylene has a lower initial modulus than polyester and is higher than nylon. The fabric's flexibility is between polyester and nylon.
3. Relative Density The relative density of polypropylene is 0.91, 40% lighter than cotton and 34% lighter than polyester. It is the lightest of all fiber and is the only fiber lighter than water. This means that polypropylene can be made into the lightest fabric, or the largest in volume, or the best in warmth. Therefore, polypropylene fine denier is the best material for making sportswear, swimwear and military uniforms.
4. Abrasion resistance Since the polypropylene fiber is continuously subjected to friction during use, the friction resistance of the fiber determines the range of use and service life of the fiber, and the abrasion resistance of the polypropylene is better than that of the polyester.
5, polypropylene, polyester fiber and fabric appearance and wearing comfort compared to fine denier polypropylene filament because its dpf (denier of single fiber) is less than 2, a change in the ordinary polypropylene waxy feel, clothing use is poor, And the fine denier and ultra-fine denier polypropylene textile products become high-end products.
6, breathable drainage Ventilation drainage is a measure of the comfort of taking. The gas permeability refers to the ability to transfer and diffuse gaseous water in the atmosphere through a fabric under a certain wind speed and time. When the sweat of the human body sweats can be well discharged, it will make people feel comfortable; otherwise, it will not be wet, and it will feel uncomfortable due to adhesion to the body. Drainage refers to the capillary attraction of the fabric, or the wicking effect. When the liquid water encounters the fabric, the water is mainly transferred by the interfiber spaces in the fabric and the capillary action of the fibers. The drainage of the fibers is related to the capillary radius in addition to the surface tension. As the fiber fineness becomes thinner, its drainage capacity increases. Therefore, the drainage property varies depending on the degree of capillary formation of the fiber, and the finer the fiber, the better the wicking action and the better the drainage property.
In summary, fine-denier polypropylene filaments are better than polyester, and fine-denier polypropylene itself has excellent functionality, which is incomparable to polyester. The functionality of polyester needs to change its internal structure to have. And it is time-sensitive, and it will not exist after several washing functions.
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