摘要
以4,4′-二苯基甲烷二异氰酸酯(MDI)、聚醚多元醇、扩链剂、匀泡剂、发泡剂和水为原材料,通过半预聚体法制备高速铁路用聚氨酯微孔弹性垫。研究了不同相对分子质量聚醚多元醇、异氰酸酯指数、水分含量对弹性垫性能的影响。结果表明,不同相对分子质量聚醚多元醇、异氰酸酯指数、水分含量及产品密度是影响性能的重要因素,通过适当控制这几方面,制得的聚氨酯微孔弹性垫能满足技术要求。
The microcellular elastomeric pad was prepared using 4,4'-diphenylmethane diisocynate,polytetramethylene glycol,chain extender and water as materials by semi-prepolymer method.The influence of components on the performance was discussed.The results showed that soft segment component,isocyanate index,water content and pad weight were the important aspects to prepare microcellular elastomeric pad.It showed that the pad characteristics met the specifications by controlling aspects appropriately.
出处
《特种橡胶制品》
2012年第6期5-8,33,共5页
Special Purpose Rubber Products
基金
中国南车股份有限公司科技计划项目(2011NCK098)
关键词
高速铁路
浇注聚氨酯
微孔弹性体垫板
high-speed railway
castable polyurethane
microcellular elastomeric pad
