Study On Properties Of New Bamboo Pulp Fiber Yarn And Knitting Products Development

Because of the constraints of arable land and higher oil prices, the development of new regenerated cellulosic fiber as textile material becomes a necessity. In China, bamboo resources is rich and timber resources is relatively scarce, so developing the bamboo pulp fiber is an effective method to make full use of natural cellulosic materials.Based on the performance characteristics of bamboo pulp fiber, the new type of yarns, knitting products have been designed, and their structures and properties have been tested and analyzed, several conclusions have been gotten as follow:1. The characteristics of bamboo pulp fiber are almost the same as an ordinary viscose fiber. There are grooves in longitudinal surface and the cross section is seeing tooth-shaped. The fiber is a skin/core structure. The tenacity and modulus of bamboo fiber are lower than those of cotton fiber.2. The research on performance of new types of yarn shows That the high-twist yarn and Siro yarn are more even than the ring yarn, the evenness of MVS yarn is poor ; the strength of new yarns is generally lower than the ring yarn, but the modulus is generally higher, especially the MVS yarn. In addition, the elastic performance of new yarns is generally better than those in ring yarn.3. The results of yarn properties principal component analysis shows that the bamboo ring yarn is suitable for the products requiring a higher strength, but less appearance demanding; compact yarn with a good overall performance, can develop a variety of products; Siro yarn is suitable for producing products with higher performance requirements. Although the new textile yarn had some deficiencies in the mechanical properties, in other areas they had their unique advantage; we can try to use the new yarn to improve the style aspects problem.4. Study on the performance of bamboo pulp fiber knitting fabric shows that the MVS yarn plain-knitted fabric has a higher tensile breaking strength in the single, in the bursting strength, the fabrics knitted by one kind yarn with different organizations generally have the minimum feature in plain and the largest in double-rib, the new yarn fabric have a higher bursting strength than ring yarn fabric or equivalent. In appearance retention, the stiffness of ring yarn fabric is worse than the new yarn's, MVS yarn fabrics' bending rigidity is the best; the crease recovery performance and anti-pilling performance of new yarn fabrics are also better than the ring yarn's. In the comfort, the permeability of ring yarn fabric is better, while the new yarn fabrics have higher water vapor permeability. In the dimensional stability on a various organizations, through the family washing test, the trend in vertical shrinkage is different from it in transverse shrinkage. The MVS yam fabrics have a larger in lateral shrinkage than other fabrics.5. Through the style characteristics analysis of bamboo pulp fiber knitted fabric, the knitted fabrics can be classified into three broad categories. All types of weft plain fabrics belong to the thin-soft-type, high twist georgette and the ring rib are intermediate, and the others belong to the thick-full-type.