... 1.14, in addition to polypropylene outside, it is the lightest of synthetic fiber, cotton fiber light than 35%, more than ... 5. Hygroscopic: nylon hygroscopicity general, than natural fiber and synthetic fiber are poor, but in synthetic fibre, in addition to vinylon outside, its ... or higher. 6. Heat resistance: nylon heat-resistance performance in general, under the condition of 150 °C experience 5 h is ...