Product Development And Performance Research On The PBT Pile Knit Fabric

PBT is a kind of aromatic polyester made by the polycondensation of TPA and BG, it has good elasticity, dimensional stability, durability, and can be dyed easily. The PBT fiber is soft, friction-resistant, crispate, and it has good elasticity of elongation and compression. Since the PBT fiber has so many outstanding properties, it's necessary to widen its applications besides the garment field. In this thesis, we try to study the properties of PBT pile fabrics and use them as the automobile textile and decorating fabrics. We hope we can offer the information on the use of PBT in the knitted pile fabrics.Knitted pile fabrics are becoming more and more popular in the automotive textiles field because of their desirable properties such as soft handle, excellent elongation, air permeability and elegant appearance. In this thesis, we discuss the knitting, dyeing and finishing technology of the PBT pile fabric and we pay some emphasis on the lodging resistance. What we have done are as followed:l.In order to make sure if the PBT can be used in the pile fabrics, the mechanical properties of the PBT fiber and yarns were tested, including the elasticity, tension fatigue and shrinkage and etc.2.According to the characteristic of the PBT, especially its prominent elasticity, we have worked out the knitting technology of the PBT file fabric which is different from the common file fabrics, the knitting parameters were improved.3.The dyeing and finishing technology were studied in this thesis such as the dyeing process and the temperature of the thermosetting.4.We analyzed the lodging resistance of the PBT file fabrics in detail, after we discussed the process and the principle of the lodging, we designed three method to test the lodging resistance, according to the compression and friction test, it was found that repeat bending can make great destroy to the pile and is responsible for thelodging. But PBT file fabric has good characteristics on lodging resistance because of the well-known property of PBT fiber. And the relationship between the knitting parameter such as density, the height of the pile and lodging resistance were analyzed. 5.Other performances of the fabrics such as the breaking elongation, friction resistance, pilling resistance, the air and moisture permeability were tested.Postgraduate: Wu Min (Major: Textile Engineering) Supervised by: Prof. Shen Wei...