聚碳酸酯基聚氨酯/芳纶纤维复合材料的制备与性能  

Preparation and Properties of Polycarbonate Urethane/Aramid Pulp Composites

作　　者：王晓环[1] 蒋玉湘[1] 徐文龙[1] 罗明艳[1] 李翠苹[1] 胡晓云[1] 李再峰[1] 

机构地区：[1]青岛科技大学化学与分子工程学院,山东青岛266042

出　　处：《高分子材料科学与工程》2016年第10期160-163,169,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21676150);青岛市科技计划基础研究项目(13-1-4-147-jch)

摘　　要：以聚碳酸酯二元醇为软段,利用预聚体法制备了系列聚碳酸酯基聚氨酯/芳纶浆粕纤维(Aramid pulp)复合材料,研究了芳纶浆粕纤维对聚碳酸酯基聚氨酯弹性体(PUE)力学性能的影响。采用扫描电镜、X射线衍射、差示扫描量热分析、热重分析、红外光谱及电子拉伸机等测试仪器对聚氨酯复合材料的结构与性能进行了表征和分析。结果表明,芳纶浆粕纤维能有效实现对聚氨酯弹性体的增强作用,其中对撕裂强度的增强尤为突出。当芳纶浆粕纤维用量为0.5%时,复合材料的撕裂强度由106 k N/m提高到120 k N/m,表现出最好的力学性能;芳纶浆粕纤维在聚氨酯中分散均匀,提高了复合材料的热稳定性。A series of aramid pulp / polyurethane composites based on polycarbonate polyol as soft segment were prepared by prepolymerization process. The effect of aramid pulp content on the mechanical properties of aramid pulp / polyurethane composites was investigated. The structure and properties of PUE were analyzed by DSC,TG,XRD,FT-IR and strain-stress instrument. The results show that aramid pulp can effectively strengthen and toughen the mechanical properties of polyurethane elastomers,especially the tear strength. When the content of aramid pulp is about 0. 5%,the tear strength of composites increases from 106 k N / m to 120 k N / m,and its comprehensive mechanical properties are the best. The proper content of aramid pulp could be dispersed well in the PU matrix,and the thermal stability of PUE is improved to some extent.

关 键 词：芳纶浆粕纤维 聚氨酯复合材料 制备 性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]