摘要
对动车组车内装饰材料玻璃纤维增强不饱和聚酯(简称玻璃钢)进行了热空气老化实验,并研究了老化后材料的力学性能、燃烧性能和热重性能。结果表明:随着老化时间的延长,玻璃钢的力学性能、热性能和阻燃性能均呈现先提高后降低的趋势;在老化4000 h内,玻璃钢的分子链进一步交联固化,拉伸强度、弯曲强度和冲击强度增加,热分解温度和残炭率提高,热释放速率峰值和总热释放量降低,氧指数提高;在老化6000 h时,玻璃钢的分子链出现了老化断裂,力学性能、热性能和燃烧性能呈下降趋势。
The hot air aging test was carried out on the interior decoration material,glass fiber reinforced unsaturated polyester used for electric multiple unit.The mechanical properties,combustion properties and thermo-gravimetric properties of the material after hot air aging were investigated as well.The results show that the mechanical properties,thermal properties and combustion properties of glass fiber reinforced unsaturated polyester are increased first and then decreased with the increase of the aging time.The molecular chains of the material are further cross-linked,whose tensile strength,bending strength,impact strength,decomposition temperature,oxygen index and the content of the residue increase,while whose peak value of the heat release rate and total heat release are decreased within 4000 h of aging.After aging for 6000 h,the molecular chains of glass fiber reinforced unsaturated polyester begin to break,and whose mechanical properties,thermal properties and combustion properties drop.
作者
徐超
刘振华
吴绍利
李艳伟
张忠新
Xu Chao;Liu Zhenhua;Wu Shaoli;Li Yanwei;Zhang Zhongxin(Research Institute of Metals and Chemistry,China Academy of Railway Sciences Co.,Ltd.,Beijing 100081,China;Beijing Railway Zhongtieke of New Materials Technology Co.,Ltd.,Beijing 100081,China)
出处
《合成树脂及塑料》
CAS
北大核心
2020年第6期32-34,共3页
China Synthetic Resin and Plastics
基金
中国国家铁路集团有限公司科研开发基金项目(P2018J003)。
关键词
玻璃纤维增强不饱和聚酯
热空气老化
动车组
力学性能
燃烧性能
glass fiber reinforced unsaturated polyester
hot air aging
electric multiple unit
mechanical property
combustion property
作者简介
徐超,女,1988年生,硕士,工程师,2014年毕业于北京化工大学材料科学与工程专业,研究方向高分子材料环保、阻燃。E-mail:xuch@rails.cn;通信联系人:吴绍利。E-mail:tkjhwsl@163.com。
