Mechanical Properties And Handle Style Research Of PBST Fabric

Poly(butylenes succinate-co-butylene terephthalate)(PBST) copolyesters were efficiently synthesized from the starting materials of dimethyl succinate,dimethyl terephthalate and 1,4-butanediol.As one of aliphatic/aromatic copolymer,PBST is an important category for the balance of its biodegradability and physical properties.But now,the researches on PBST only focused on synthesis,spinning process,and its influence on PBST fibers.The researches on PBST fabrics and its application were still a blank.In this paper,we used the new fiber PBST to develop PBST products.By researching the stretching properties and the elastic recovery of PBST filament,PBST cotton plied yarn, PBST/cotton core-spun yarn and the various properties of PBST products,analyzed the influence of spinning process and weaving process and the field of application of PBST/cotton fabric.It provided the experiment basis for the the development and application of PBST fabrics.The following contents were studied in this paper.Firstly,the stretching properties and the elastic recovery of PBST filament were researched and its influence of elongation and stitching times and the diffence of the elastic recovery of PBST filaments,PTT filaments and PET filaments.In this basis the mechanical matrix of PBST filaments was discussed.The result showed that the elastic recovery of PBST filaments was better than PTT filaments in about 9%small deformation,but in big deformation it was worse than PTT filaments.When PBST filaments were elongated to 15%,the elastic recovery rate up to over 98 percent;when set the elongation of 20%and elaongate repeatedly 5 times,the elastic recovery rate of PBST filaments still up to 88.3%.The elastic recovery of PTT filaments was the same as PBST filaments when it was elongated less than 15%,but it woule better than PBST filaments when elongated more than 15%.PET had better resistance to deformation,but it had bad elastic recovery.Furthermore,the influence of spinning technological paramere on the mechanical properties of PBST cotton yarns was analyzed in three aspects of twist,blended ratio and yarn structure.And the diffence of the elastic recovery of PBST cotton yarns,PTT cotton yarns and PET cotton yarns was compared.The result showed that the stretching properties of PBST cotton plied yarn and PBST/cotton core-spun yarn lied on the stretching properties of cotton.Twist and cotton contents blocked the elastic recovery of PBST cotton yarns to a certain extent.When the twist was 500 T/m and the blended ratio was 40/60,the elastic recovery of PBST cotton yarns was better.Moreover, the elastic recovery of PBST cotton plied yarn was better than PBST core-spun yarn.In addition,the wrinkle recovery,the elastic recovery and the KES style of PBST cotton fabrics were analyzed,the relation between these propreties and fabrics structure was researched, and the application in the future of PBST cotton fabrics was discussed.This provided certain basis for the application of PBST fibers in the costume field.The result showed that fabrics weave, density of warp and weft and yarn construction had an effect on the wrinkle recovery and the elastic recovery of PBST cotton fabrics.Compared cotton fabric and PET cotton fabric,PBST cotton fabric and PTT cotton fabric had better elastic recovery.Moreover,their elastic recoveries were similar.PBST cotton fabrics had better softness and fullness,so it could weave women loose-fitting,stiff and smooth,suspended pattern and light weight fabrics and men winter light weight fabrics.