高速铁路轨下弹性垫板的研制  

Studies on Under-Track Elastic Pads in High-Speed Railway

作　　者：罗玉媛[1] 庞金录[2] 杨光付[3] 姜志国[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京北方车辆集团有限公司,北京100072 [3]海军装备技术研究所,北京104224

出　　处：《化学推进剂与高分子材料》2011年第3期78-80,共3页Chemical Propellants & Polymeric Materials

摘　　要：通过4,4′-二苯基甲烷二异氰酸酯(MDI)、组合聚醚多元醇、匀泡剂、扩链剂和水反应制备高速铁路轨下弹性垫板(UTPE)。探讨了聚醚多元醇相对分子质量、交联剂种类、硬段含量等对UTPE力学性能、静刚度的影响。并结合特别模具和加工工艺研制了高速铁路轨下弹性垫板,经测试得知,它可满足《WJ-8型扣件暂行技术条件》要求。The under-track elastic pad（UTEP） in high-speed railway was prepared by the reaction of 4,4′-diphenylmethane diisocyanate（MDI）,combined polyether polyols,foam stabilizers,chain extenders and water.The influence of the relative molecular mass of polyether polyols,types of crosslinking agents and hard segment content on the mechanical properties and static stiffness of UTPE was discussed.UTEP in high-speed railway was prepared by combining special mould and process technology,It is found by test that it can meet the requirement of Temporary Technical Specifications of WJ-8 Fastener.

关 键 词：高速铁路 弹性垫板 聚氨酯 微孔弹性体 

分 类 号：U238[交通运输工程—道路与铁道工程] U213.3