Blended yarn containing polytetrafluoroethylene fiber and preparation method of blended yarn

Abstract

The invention discloses blended yarn containing polytetrafluoroethylene fiber and a preparation method of the blended yarn. The blended yarn is prepared from, by weight, 5-80% of polytetrafluoroethylene fiber, 20-95% of flame-retardant fiber and 0-5% of conductive fiber. The blended yarn containing polytetrafluoroethylene fiber is prepared by adding a certain proportion of conductive fiber, preprocessing the raw material before spinning, adding an antistatic agent for being still standing for at least 8 hours for antistatic processing, strictly controlling the technological conditions of all the procedures in the processing process, and controlling the temperature and relative humidity of the carding, drawing, roving and spinning procedures. The severe static problem during spinning of polytetrafluoroethylene fiber is effectively solved, and yarn quality is ensured.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a blended yarn containing polytetrafluoroethylene fibers and a preparation method thereof. Background technique [0002] Polytetrafluoroethylene fiber, called fluorine fiber in China, is a synthetic fiber made of polytetrafluoroethylene (see fluororesin) as a raw material, which is cut or fibrillated after spinning or making a film. The fiber strength is 17.7~18.5cN / dtex, and the elongation is 25%~50%. In its molecular structure, the volume of fluorine atoms is larger than that of hydrogen atoms, and the binding force of fluorine-carbon bonds is also strong, which plays a role in protecting the entire carbon-carbon main chain, making PTFE fibers have excellent chemical stability and excellent corrosion resistance. Compared with other synthetic fiber varieties; the surface of the fiber has a waxy feel and a small friction coefficient; the actual use temperature is 120-1...

AI Technical Summary

Problems solved by technology

[0003] At present, the flame-retardant yarns on the market are usually made of 100% aramid, or blended with other materials such as aramid and flame-retardant viscose. The fabrics produced by using this yarn have high strength and are flame-retardant. Excellent performance, but also has the following disadvantages: 1. The anti-pilling performance of the fabric is relatively poor, and the clothing is prone to hair balls during use, and the hair balls are not easy to remove; 2. The wear resistance of the fabric is not excellent enough; 3. Poor drape performance, mixed with nylon and other chemical fibers, not resistant to high temperature