Nylon quickly curls up near the flame and melts into a […]
Nylon quickly curls up near the flame and melts into a white gel. It melts and drips and foams in the flame. There is no flame when it burns. It is difficult to continue burning away from the flame. It emits a celery smell. The light brown melt is not easy to grind after cooling. Polyester is easy to ignite, and it melts when it is near the flame. When it burns, it emits black smoke while melting. It shows a yellow flame and emits an aromatic smell. After burning, the ashes are dark brown lumps, which can be broken with fingers.
Polyester (stiff and non-wrinkle): Features: high strength, good impact resistance, heat resistance, corrosion resistance, moth resistance, acid and alkali resistance, good light resistance (second only to acrylic), 1000 hours of exposure, strong retention of 60- 70%, poor hygroscopicity, difficult to dye, easy to wash and quick dry fabric, good shape retention. It has the characteristics of "washable and wearable": Filament: often used as low-stretch yarn to make various textiles; Staple fiber: cotton, wool, hemp, etc. can be blended, industrial: tire cord, fishing net, rope, filter cloth , Yuanjue materials, etc. It is currently the largest amount of chemical fiber. Nylon (strong and wear-resistant): The biggest advantage is that it is strong and wear-resistant, which is the best one. Low density, light fabric, good elasticity, fatigue damage resistance, good chemical stability, alkali and acid resistance! The biggest disadvantage is that the sun resistance is not good, the fabric will turn yellow after long exposure, the strength will decrease, and the moisture absorption is not good, but it is better than acrylic and polyester. Uses: filaments are mostly used in knitting and silk industries; staple fibers are mostly blended with wool or wool-type chemical fibers for gabardine, vanidine, etc. Industry: cords and fishing nets, also used as carpets, ropes, conveyor belts, screens, etc.