Preparation and Properties of Ramie/PLA Co-wrapped Yarns Thermoplastic Composite

摘要：

　　In this research, PLA/hemp co-wrapped yarns which are produced by wrapping PLA filaments around the core ramie yarns are used to fabricate the plain woven fabric, and the composites are made by hot compression molding of plain woven fabric layers prepregs.The mechanical properties are characterized regarding mechanical strength and scanning electron microscopy (SEM).Mechanical tests shows that the tensile and bending strengths of the composites markedly increased compared with the neat PLA matrix, reaching 67.67 and 56.73 MPa, which is approximately 2.3 and 1.9 times higher than neat PLA.The fractured surfaces are investigated by scanning electron microscopy to study the fiber/matrix interface.Testing result illustrates that the adhesion between the matrix and the yarns improved in a certain degree, however, in some areas the yarns and matrix do not adhere to each other adequately enough, showing little imprints of fibers on the matrix, there are also gaps between the fibers and the PLA.

关键词： environmentally friendly composites ramie yarn PLA co-wrapped yarns woven-fabric reinforcement

作者: Dan Liu Wei Wang Ruiyun Zhang Feng Ji

作者单位: College of Textile, Donghua University, China

会议类型: 国际会议

会议名称: 2017 Sino-Africa International Symposium on Textiles and Apparel (SAISTA2017)(2017中非纺织服装国际论坛)

会议地点: 上海

会议语种:英文

页码: 167-171

在线出版日期: 2017-11-18（万方平台首次上网日期，不代表论文的发表时间）