聚氨酯型吸水膨胀橡胶的制备及性能研究  

Study on preparation and properties of water swelling rubber modified by polyurethane

作　　者：辛华[1] 王静会 杨江鹏 赵星[1] 贠文涛 侯家豪 XIN Hua;WANG Jing hui;YANG Jiang peng;ZHAO Xing;YUN Wen tao;HOU Jia hao(Key Laboratory of Auxiliary Chemistry ＆ Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science ＆ Technology,Xi＇an 710021,China)

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《陕西科技大学学报》2018年第4期82-86,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅自然科学基金项目(2012JM6011);陕西省教育厅专项科研计划项目(14JK1106);陕西科技大学博士科研启动基金项目(BJ12-27)

摘　　要：将丁腈橡胶(NBR)与自制高吸水树脂(SAP)、聚乙二醇(PEG)和异佛尔酮二异氰酸酯(IPDI)等在开炼机上充分混合制备聚氨酯(PU)型吸水膨胀橡胶(WSR),主要研究硫化剂(S)、PU、SAP的用量对WSR吸水性能和机械性能的影响,并通过扫描电镜观察了SAP与WSR的形貌.结果表明:随S、PU用量增加,WSR吸水性能先增大后减小;随着SAP用量增大,WSR吸水性能增大.WSR拉伸强度随着S、PU、SAP用量增大先增强后减小.较佳的S、PU、SAP的用量分别为0.5g、15g及30g.SEM显示SAP呈球形且表面粗糙,未添加SAP的WSR断面布满小孔,添加了SAP的WSR断面较为致密.The water swelling rubbers modified by polyurethane were prepared by the nitrile rubber,super absorbent polymer（SAP）,polyethylene glycol（PEG）and Isophorone diisocyanate（IPDI）which were mixed by two-roll mill machine.The influlence of the dosage of sulfur、PU and SAP on the water absorbency and the tensile strength of WSR were mainly discussed.At the same time,the morphology of the SAP and WSR were observed by SEM.The results show that the water absorbency of the WSR first increases and then decreases with the increase of the dosage of sulfur and PU,and it increases with the increase of the dosage of SAP.The tensile strength of the WSR first increases and then decreases with the increase of dosage of sulfur、PU and SAP.The more optimum dosage of Sulfur、PU and SAP is 0.5 g、15 g and 30 g respectively.SEM shows that SAP is spherical and its surface is rough.The WSR cross section without SAP is full of small holes,while the WSR section with SAP is more compact.

关 键 词：丁腈橡胶 聚氨酯 吸水性能 拉伸强度 

分 类 号：TQ336[化学工程—橡胶工业]