天津工业大学学报2016，Vol.35Issue(6)：14-19,6.DOI:10.3969/j.issn.1671-024x.2016.06.003
多巴胺仿生修饰及聚乙烯亚胺二次功能化表面改性超高分子量聚乙烯纤维
Surface modification of UHMWPE fibers by bio-dopamine and polyethylene imine second functionalization
摘要
Abstract
In order to improve the interfacial shear strength of ultra-high molecular weight polyethylene(UHMWPE) fibers and epoxy resin, UHMWPE fibers were modified by bio-dopamine and polyethylene imine (PEI) second functionalization. The surface characteristic of UHMWPE fibers before and after modification and the interfacial shear failure of UHMWPE/epoxy resin composites were analyzed by FTIR, XPS, SEM and single-fiber pull-out test. The results show that the active groups of hydroxyl and amino were introduced into the surface of fibers after dopamine coated and PEI second functionalization. The surface of modified fibers became much rougher. The ex-cellent mechanical property of UHMWPE fibers had no obvious change. The interfacial shear strength of modified fibers and epoxy resin increased. When the concentration of PEI was 5 mg/mL, the interfacial shear strength of the PEI second functionalization UHMWPE fibers and the epoxy resin matrix was 1.185 MPa, and was improved by 65.27%!compared with the pristine UHMWPE fibers composites.关键词
超高分子量聚乙烯(UHMWPE)纤维/多巴胺/聚乙烯亚胺(PEI)/二次功能化/表面改性/界面剪切强度Key words
ultra-high molecular weight polyethylene(UHMWPE) fibers/dopamine/polyethylene imine(PEI)/second functionalization/surface modification/interfacial shear strength分类
轻工纺织引用本文复制引用
冯霞,胡俊成,阿拉东..多巴胺仿生修饰及聚乙烯亚胺二次功能化表面改性超高分子量聚乙烯纤维[J].天津工业大学学报,2016,35(6):14-19,6.基金项目
国家自然科学基金资助项目（51303129）；天津市科技特派员项目 （）
