用原位聚合法制备改性氧化石墨烯/热塑性聚氨酯弹性体纳米复合材料  

Preparation of modified graphene oxide/thermoplastic polyurethanes nanocomposites by in-situ polymerization

作　　者：庄慧超 王海瑞 郎秀瑞 徐萌萌 曹兰[1] 宗成中[1] ZHUANG Hui-chao;WANG Hai-rui;LANG Xiu-rui;XU Meng-meng;CAO Lan;ZONG Cheng-zhong(School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《合成橡胶工业》2023年第5期422-422,共1页China Synthetic Rubber Industry

基　　金：Supported by Shandong Province Science and Technology Small and Medium-sized Enterprise Innovation Capability Project(2021 TSGC 1153)。

摘　　要：首先采用异佛尔酮二异氰酸酯对氧化石墨烯(GO)进行改性,通过红外光谱证明GO成功接枝异氰酸根;然后采用原位聚合的方法使聚四亚甲基醚二醇1000(PTMG 1000)与改性GO(IGO)上的异氰酸根反应,再与二苯基亚甲基二异氰酸酯(MDI)进行预聚,制备了IGO@热塑性聚氨酯弹性体(TPU)纳米复合材料(IGO@TPU)。同时作为对比,在MDI和PTMG 1000预聚时加入GO,采用溶液共混法制备了GO/TPU复合材料。结果表明,IGO@TPU比GO/TPU和纯TPU有更好的力学性能,IGO@TPU的拉伸强度和扯断伸长率分别为36 MPa和570%,相较于纯TPU分别提升了338%和70.6%,相较于GO/TPU分别提升了188%和61.5%。Thermoplastic polyurethanes(TPU)carry both the properties of thermoplastics(easy processability)and elastomers(flexibi-lity).Its tunable physical properties and melt processability make it suitable for various applications.However,the application of TPU containing a very low percent of hard segments is limited due to its low stiffness and strength[1].

关 键 词：氧化石墨烯 热塑性聚氨酯弹性体 异氰酸根 原位聚合 拉伸性能 

分 类 号：TB332[一般工业技术—材料科学与工程]