期刊论文

Li, Heng-Feng

中文

功能材料

1001-9731

2014

45

21

21006-21010

10.3969/j.issn.1001-9731.2014.21.002

湖南省自然科学基金资助项目（13JJ4102）；

本校为其他机构

将两种含悬挂链的二元醇扩链剂(受阻酚二醇(TMP-derived diol)和2,2-2,2-二羟甲基丙酸卞基酯(BHP))和选用的单甘酯(GMS)分别与4,4-二苯醚二胺(ODA)以不同摩尔比混合扩链合成新型聚氨酯弹性体。用红外(FT-IR)、热分析(DSC)、动态力学性能(DMA)来表征二醇扩链剂对聚氨酯弹性体的微相分离及阻尼性能的影响。研究结果表明,悬挂链中基团的体积越大,阻碍作用越强;受阻酚二醇的引入使聚氨酯体系的玻璃化温度升高,两相相容性增加,而GMS、BHP扩链反而使聚氨酯体系玻璃化温度降低,相分离增加;悬挂的多碳支链及受阻酚基团有利于抬升在高于玻璃化温度一定区域的阻尼值。

Two kinds of diols with side chain, trimethylolpropane-derived diol (TMP-derived diol) and benzyl 2, 2-bis(methylol) propionate(BHP), were designed and synthesized. These two diols and commercialized GMS were mixed respectively with 4, 4'-diphenyl ether diamine (ODA) with different molar ratios as chain extenders of novel PU elastomers (PUs). The PUs were characterized by infrared (FT-IR), thermal analysis (DSC), dynamic mechanical analysis (DMA) and the influences of the diols chain extenders on the microphase separation and damping properties...