摘要
以二聚二醇(Pripol 2033)、二苯基甲烷二异氰酸酯(MDI)和六取代脂肪酸蔗糖酯(Sefose 1618U B6)为原料,通过两步法合成了嵌段共聚聚氨酯弹性体。用热重分析仪和差示扫描量热仪研究了生物基聚氨酯弹性体的热稳定性及玻璃化转变温度,并采用拉伸实验测定材料的机械性能。结果表明:随着Sefose 1618U B6含量的增加,聚氨酯弹性体的拉伸强度和硬段玻璃化转变温度都随之降低,而断裂伸长率和回弹性却逐渐增强。
Bio-based thermoplastic polyurethane elastomers were synthesized via two-step procedure using dimmer fatty diol（pripol 2033）,4,4′-diphenylmethanediisocyanate（MDI）,and partial substituted sucrose ester of fatty acid（Sefose1618UB6）.The properties of elastomers were characterized using differential scanning calorimtry（DSC）,thermogravimetric analysis（TGA）and tensiletes-ting.The results indicated that the glass transition temperatures（Tg）of hard segment and tensile strength decreased with increasing of Sefose 1618UB6 content,while the elongation at break and elasticity of elastomers gradually increased as the content of Sefose 1618UB6 increased.
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第2期111-113,共3页
New Chemical Materials
基金
吉林省发改委项目(2014Y115)
关键词
聚氨酯弹性体
生物基
六取代脂肪酸蔗糖酯
二聚二醇
polyurethane elastomer
bio-base
partial substituted sucrose ester of fatty acid
dimer fatty diol
