UV辐射麻纤维复合材料的耐老化性能的研究  

Study on accelerated weathering property of hemp fibre composite exposured to ultraviolet radiation

作　　者：李来丙[1] 

机构地区：[1]湖南工学院材料与化学工程学院,衡阳421002

出　　处：《化工新型材料》2017年第6期163-165,共3页New Chemical Materials

基　　金：国家自然科学基金项目(21176061);湖南省重点建设学科(湘教发[2011]76号);2016年湖南省教育厅重点项目(16A053);2016年衡阳市科技计划项目(2016KS40);2016年湖南省教研教改项目(湖南省教育厅湘教通[2016]400号)

摘　　要：研究了麻纤维增强不饱和聚酯复合材料的耐老化性能。紫外线(UV)辐射和冷凝循环加UV辐照都能导致麻纤维复合物失重,但失重率随延长辐照时间的延长而稳定。同样,UV辐照初期能使麻纤维复合材料的拉伸性能下降,但随时间增长,拉伸性能越来越稳定。同样两类条件下,不同麻纤维复合物拉伸强度和弹性模量的下降都非常相近。但是在水中,麻纤维复合的物的弹性模量比拉伸强度降低更为明显。利用这些条件可以识别这类复合材料是否被水污染。The properties of hemp fibre reinforced unsaturated polyester composites following exposure to accelerated weathering conditions were studied.Exposure to ultraviolet（UV）radiation and UV radiation plus condensation resulted in immediate loss in weight which stabilized following prolonged exposure times.The same exposure led to initial decline in tensile properties of composites,but the decline in properties also stabilized following prolonged exposure and these materials seemed to perform fairly well in these conditions.The decline in strength and modulus was quite similar,unlike immersion in water where the reduction in modulus was more pronounced than the reduction in strength.Discoloring of composites following exposure to these conditions was identified as an issue with these composites.

关 键 词：麻纤维 老化性 拉伸性能 失重 

分 类 号：TB332[一般工业技术—材料科学与工程]