盾构掘进机用聚氨酯铰接密封件的研制  

Development of Polyurethane Articulated Seal for Shield Tunneling Machine

作　　者：马自立 雷霖 蔡伟强 王宇 MA Zi-li;LEI Lin;CAI Wei-qiang;WANG Yu(Northwest Rubber&Plastics Research&Design Institute Co.,Ltd.,Xianyang 712023,China)

机构地区：[1]西北橡胶塑料研究设计院有限公司,陕西咸阳712023

出　　处：《特种橡胶制品》2022年第2期37-40,共4页Special Purpose Rubber Products

摘　　要：以四氢呋喃二醇作聚氨酯弹性体软段,TDI(甲苯二异氰酸酯)或MDI(二苯基甲烷二异氰酸酯)作硬段,MOCA或DBO作扩链剂,制备了聚氨酯弹性体材料;研究了一种多元醇分别与两种异氰酸酯及扩链剂配合对聚氨酯弹性体性能的影响。结果表明,选用四氢呋喃二醇/TDI/MOCA配合,采用模压硫化工艺制备了盾构掘进机用聚氨酯弹性体铰接大直径密封件,其产品质量及使用寿命得到实际多方验证,可顺利完成相关盾构推进作业。The polyurethane elastomer materials were prepared by using tetrahydrofuran glycol as soft segment,TDI(toluene diisocyanate)or MDI(diphenylmethane diisocyanate)as hard segment,and MOCA or DBO as chain extender of polyurethane elastomer.The effect of a polyol combined with two isocyanates and chain extenders on the properties of polyurethane elastomers were studied.The results showed that the quality and service life of prepared products had been verified by many projects,and the relevant shield propulsion operations could be completed successfully.

关 键 词：盾构掘进机 聚氨酯弹性体 铰接密封件 模压硫化 

分 类 号：U455.3[建筑科学—桥梁与隧道工程] TQ334.1[交通运输工程—道路与铁道工程]