含能材料2012，Vol.20Issue(3)：319-323,5.DOI:10.3969/j.issn.1006-9941.2012.03.012
HQEE扩链聚氨酯弹性体的形态结构及动态流变行为
Morphology and Dynamic Rheological Behaviors of Thermoplastic Polyurethane Based on HQEE as Extender
摘要
Abstract
According to the requirement of propellant binder,a series of novel segmented thermoplastic polyether polyurethane elastomers (TPU) based on tetrahydrofuran-ethylene oxide copolyether (PET) as the soft segments and 1,3-bis(isocyanatomethyl)benzene (XDI) extended with hydroquinone-bis(/3-hydroxyethy)ether (HEQQ) as the hard segments were synthesized to study the relationships between morphology and properties. The experimental techniques utilized were dynamic rheological behaviors,FTIR,WAXD,DMA,GPC and the miscibility with nitrate ester. The results show that the storage modulus(G') ,loss modulus(G")and the complex viscosity(η· ) of the blends increase gradually with increasing fraction of hard segment content,and the TPU has a higher molecular weight with polyurethane characterization and typical microphase separation,and exhibits excellent the complex viscosity of TPU with 45% hard segment contents to meet requirements of propellant in terms of lower τ8 of soft segments, good miscibility with nitrate ester, while the strain decreases WAXD results indicate that all elastomers are completely amorphous at all levels of hard-segment concentration.关键词
高分子化学/热塑性聚氨酯/流变学行为/弹性体/微相分离Key words
polymer chemistry/ thermoplastic polyurethane/ rheological performance/ elastomer/ microphase separation分类
军事科技引用本文复制引用
蒋海,杨序平,杨文彬,黄辉,李尚斌..HQEE扩链聚氨酯弹性体的形态结构及动态流变行为[J].含能材料,2012,20(3):319-323,5.基金项目
国家自然科学基金委员会-中国工程物理研究院联合基金资助项目(No.11176025) （No.11176025）
四川省科技厅自然科学基金(No.2006J13-061) （No.2006J13-061）
