The most outstanding advantage of polyamide fiber to the wear resistance than other fiber superior, followed by its excellent elasticity, the elastic recovery rate comparable to wool, and its light quality, the proportion is 1.14, has been in the commercialization of synthetic fiber, polypropylene (PP, only the proportion of less than 1), and a polyester fiber (the proportion of 1.38) light, so the polyamide fiber can be processed into fine soft and smooth silk fabric, for causing beautiful and durable fabric, the same as the other polyester fiber with corrosion resistance, not afraid of insects, not afraid of the advantages of mould.

The disadvantages of polyamide fiber resistant opticity little difference, as in the outdoors for a long time by the sunshine, then prone to yellow, strength decreased, compared with the polyester filament shape is poor, so the fabric is not tall, and the fiber surface is smooth, a waxy feeling about these shortcomings in recent years have been Study on various improvement measures, such as adding light agent to improve resistance to rotation, or in the form of special section to improve the appearance and gloss, with DTY or ATY or processing and other blended or interwoven to feel hand.

Nylon six and nylon 66 fiber polyamide fiber accounted for more than 95%, mainly as table performance. Although its physical properties are different, but in general use, the appearance, strength and wear resistance are very close, from the flat woven and knitted fabrics are also hotly debated, and often can replace each other, but as from cost considerations, it is for nylon six nylon six filament advantage, shrinkage rate is slightly higher than the nylon 66, suitable for knitted fabrics and fabrics, nylon six with low softening point.

1, the wear resistance of the wear resistance of polyamide fiber is the best of all in textile fibers, under the same conditions, the wear resistance of cotton wool for 10 times, 20 times, rayon (rayon) 50 times, such as wool or cotton in mixed with 15% polyamide fiber, its wear resistance than pure wool or cotton increased 3 times.
2, breaking strength: fabric material uses polyamide fiber long fiber, its breaking strength is 5.0~6.4g/d, industrial high strength silk is 7~9.5 g/d or even higher, its wet state fracture strength is about 85%~90% of dry state.
3, the elongation of fracture: the breaking elongation of polyamide fiber varies according to the varieties. The elongation of strong wire is lower than that of 10~25%, and the general material is 25~40%, and its wetting state is about 3~5% higher than that of the dry state.

4, elastic recovery rate: polyamide fiber to excellent elasticity, long fiber elongation of 10%, the elastic recovery rate was 99%, while in the same situation as 67% polyester, rayon is only 32%.
5, fatigue resistance: due to the elastic recovery rate of polyamide fiber, so its resistance to fatigue is also good, the fatigue resistance of polyester filament and close and higher than other chemical fiber and natural fiber, under the same experimental condition of polyester amide fiber fatigue resistance is 7~8 times higher than that of cotton fiber, than rayon several ten times.
6, hygroscopicity: hygroscopic polyamide fiber than natural fibers and rayon is low, but in the synthetic fiber after polyvinyl alcohol (PVA, vinylon) than other synthetic fiber, nylon 66 at the temperature of 20 degrees Celsius, relative humidity of 65% water when the rate of 3.4~3.8, nylon 6, 3.4~ 5, the polyamide six the hygroscopicity is slightly higher than that of polyamide 66.

Watson Lin
Xiamen Goldcattle Plastic & Metal Product Co.,Ltd
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