哑铃状超支化液晶化合物的合成研究  

Study on the synthesis and application of dumbbell-shaped hyperbranch liquid crystal compounds

作　　者：刘括[1] 班建峰[1] 罗志辉[1] 梁春杰[1] 谭明雄[1] 

机构地区：[1]广西农产品加工重点实验室(培育基地),广西高校桂东南特色农产资源高效利用重点实验室,玉林师范学院化学与材料学院,广西玉林537000

出　　处：《热固性树脂》2015年第1期33-36,共4页Thermosetting Resin

基　　金：院里科学研究项目(2013YJYB08)资助;国家自然科学基金(21261025)资助

摘　　要：以对苯二甲酰氯和对羟基苯甲酸及超支化H20为原料制得哑铃状液晶聚合物（HLCP-OH）。采用红外光谱、示差扫描量热分析、偏光显微镜及广角X衍射分析对其结构进行了表征,并研究了HLCP-OH用量对其环氧复合材料的力学性能、热性能的影响。结果表明,HLCP-OH具有向列型液晶织构,添加质量分数为5%时可使环氧复合材料的冲击强度提高近2倍,热分解温度提高5～30℃。The dumbbell-shaped liquid crystal compounds（HLCP-OH）was synthesized by using paraphthaloyl chloride,p-hydroxybenzoic acid and hyperbranched H20 as starting materials.The product structure was characterized by FT-IR,DSC,polarized optical microscope（POM）and wide-angle X-ray diffraction（WAXD）and the effect of HLCP-OH content on the mechanical properties and thermal properties were investigated. The results showed that HLCP-OH had nematic liquid crystal texture. The impact strength of epoxy composites with 5% HLCP-OH was increased by nearly two-fold and thermal decomposition temperature was increased by 5-30 ℃.

关 键 词：超支化 哑铃状液晶聚合物 环氧树脂 增韧 耐热性 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]