摘要
以碳化二亚胺改性MDI(MM103)、1,4-丁二醇(BDO)和聚碳酸1,6-己二醇酯二醇(PCDL)为原料,采用一步熔融法合成了系列聚碳酸酯型形状记忆聚氨酯弹性体(PCPU)。通过红外测试、差示扫描量热测试、硬度测试、拉伸强度测试、吸水率测试和形状记忆性能测试研究了硬段含量对材料性能的影响。结果表明,随着硬段含量的增加,PCPU的硬度逐渐增大,吸水率、拉伸强度和断裂伸长率均是先增加后减小;硬段含量为15%～20%时,PCPU的形状固定率和形状恢复率最高。
A series of polycarbonate-based shape memory polyurethane elastomers were synthesized by one-step melting method using carbodiimide-modified MDI (MM103), 1,4-butanediol (BDO)and polycarbonate 1, 6-hexanediol esterdiol (PCDL). The effects of hard segment content on the properties of the material were investigated by FT-IR, differential scanning calorimetry,hardness test,tensile strength test,water absorption test and shape memory test. The results show that with increase of the hard segment content, the hardness increases gradually, and the water absorption,tensile strength and elongation at break increase at first and then decrease. When the hard segment content is 15 %-20%,the shape fixation rate and shape recovery rate of (polycarbonate-based shape memory polyurethane) PCPU are the highest.
作者
李帅
张均
陈建君
李淑君
刘学鹏
姜志国
Shuai Li;Jun Zhang;Jianjun Chen;Shujun Li;Xuepeng Liu;Zhiguo Jiang(College of Materials Science and Engineering , Beijing University of Chemical Technology , Beijing 100029,China;SINOPEC Research Institute of Petroleum Engineering,Beijing 100101,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2019年第1期1-6,共6页
Polymer Materials Science & Engineering
关键词
形状记忆
聚氨酯
聚碳酸酯型
硬段含量
shape memory
polyurethane
polycarbonate
hard segment content
