体温响应型形状记忆聚氨酯的制备与表征  

Preparation and Characterization of Body-temperature-responsive Shape Memory Polyurethane

作　　者：丁欣 姚明[1] 曲晋 王斌 姜志国[2,3] 张均 DING Xin;YAO Ming;QU Jin;WANG Bin;JIANG Zhiguo;ZHANG Jun(College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;High-tech Research Institute,Beijing University of Chemical Technology,Beijing 100029,China;Qinhuangdao Bohai Biological Research Institute of Beijing University of Chemical Technology,Qinhuangdao 066004,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京化工大学高新技术研究院,北京100029 [3]北京化工大学秦皇岛环渤海生物产业研究院,河北秦皇岛066004

出　　处：《聚氨酯工业》2025年第1期15-18,共4页Polyurethane Industry

基　　金：河北省重点研发计划(23371201D)。

摘　　要：以聚己二酸-1,4-丁二醇酯二醇和液化MDI为原料制备了不同异氰酸酯指数(R值)的形状记忆聚氨酯(SMPU),研究了R值对SMPU热性能、力学性能、透光性和形状记忆性能的影响。结果表明:当R=1.15时,SMPU软段结晶熔融温度接近人体体温,拉伸强度为36.7 MPa,断裂伸长率为859%,在37℃条件下12.3 s的弯折角的形状回复率为100%,室温条件下弯折角的形状固定率为100%。The shape memory polyurethanes(SMPUs)with different isocyanate index(R values)were prepared with poly(butylene adipate)diol and liquefied MDI as raw materials.The effects of R values on thermal properties,mechanical properties,light transmittance and shape memory properties of SMPUs were studied.The results showed that,when the R value was 1.15,the melting temperature of soft segment crystallization was close to human body temperature,the tensile strength was 36.7 MPa and the elongation at break was 859%.The shape recovering ratio of 12.3 seconds at 37℃was 100%,the shape fixing ratio for bend angle was 100%at room temperature.

关 键 词：聚氨酯 形状记忆 异氰酸酯指数 体温响应 

分 类 号：TQ333.95[化学工程—橡胶工业]