EPDM/WSPU型吸水膨胀橡胶的制备及性能研究  

Preparation and Properties of EPDM/WSPU Water-swellable Rubber

作　　者：张建航 张继清 崔涛 王达麟 刘锦春[1] ZHANG Jianhang;ZHANG Jiqing;CUI Tao;WANG Dalin;LIU Jinchun(Key Laboratory of Rubber-plastic,Ministry of Education,Qingdao University of Science&Technology,Qingdao 266042,Shandong,China;China Railway Design Group Co.Ltd,National Engineering Laboratory for Digital Construction and Evaluation Technology of Urban Rail Transit,Tianjin 300308,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042 [2]中国铁路设计集团有限公司城市轨道交通数字化建设与测评技术国家工程实验室,天津300308

出　　处：《聚氨酯工业》2022年第4期12-15,共4页Polyurethane Industry

基　　金：城市轨道交通数字化建设与测评技术国家工程实验室开放课题基金资助(项目编号2021GY02)。

摘　　要：将亲水型聚氨酯树脂(WSPU)与三元乙丙橡胶(EPDM)共混制得EPDM/WSPU型吸水膨胀橡胶,通过改变二者质量比来探究EPDM/WSPU型吸水膨胀橡胶在分子结构、微观形貌、力学性能以及吸水性能的变化规律。结果表明,EPDM与WSPU两相界面明显,相容性差,随着EPDM用量增大,分散效果转好;EPDM含量高的吸水膨胀橡胶强度较高,在100℃热处理24 h后WSPU含量高的吸水膨胀橡胶强度明显增加;EPDM/WSPU的吸水性能随WSPU占比增大而增大,且保水效果优异,在高矿化度水体中EPDM/WSPU橡胶依然可以保持较好的吸水性能。EPDM/WSPU type water-swellable rubber was prepared by blending hydrophilic polyurethane resin( WSPU) and ethylene-propylene-diene rubber( EPDM). The different mass ratio of EPDM/WSPU on the molecular structure,microstructure,mechanical properties and water absorption of water-swellable rubber was studied. The results showed that the interface between EPDM and WSPU was obvious and the compatibility was poor while the dispersion effect improved with EPDM dosage increasing. The tensile strength of water-swellable rubber with high content EPDM were higher,the tensile strength of water-swellable rubber with high content WSPU was improved significantly after heat treatment at 100 ℃ for 24 h. The water absorption of EPDM/WSPU increased with the proportion of WSPU increasing,and the water retention effect was excellent. The EPDM/WSPU water-swellable rubber could still maintain the good water absorption performance in high salinity water.

关 键 词：三元乙丙橡胶 吸水膨胀橡胶 聚氨酯 密封材料 

分 类 号：TQ333.95[化学工程—橡胶工业]