高强耐磨聚对苯二甲酸丁二醇酯复合材料的制备及性能  

Preparation of Poly(butylene terephthalate)-Based Composites with High Strength and Anti-Friction

作　　者：戚加磊 姚超[1] 左士祥[1] 沈锐其 叶义风 桂豪冠 Jialei Qi;Chao Yao;Shixiang Zuo;Ruiqi Shen;Yifeng Ye;Haoguan Gui(Advanced Catalysis and Green Manufacturing Collaborative Innovation Center,School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学石油化工学院江苏省先进催化与绿色制造协同创新中心,江苏常州213164

出　　处：《高分子材料科学与工程》2024年第12期52-60,共9页Polymer Materials Science & Engineering

基　　金：中石油创新基金(2022DQ02-0602);江苏省高等学校基础科学(自然科学)研究面上项目(22KJB430014)。

摘　　要：利用表面改性钛酸钾晶须(MPTW),通过原位聚合法制备了聚对苯二甲酸丁二醇酯(PBT)基复合材料,分析了MPTW的表面性质及其添加量对复合材料的聚合特性、微观形貌、热稳定性、结晶行为、力学性能及耐摩擦磨损性能的影响。结果表明,MPTW能与PBT发生原位化学接枝,促进MPTW在PBT基体中的分散,并模糊相界面;原位接枝的MPTW对PBT的热稳定性影响不大,但影响PBT的半结晶时间。当MPTW质量分数为4%时,复合材料的力学性能达到最优,其中拉伸强度较纯PBT提高2倍,而冲击强度是纯PBT的3倍。同时,MPTW的添加明显提高了PTW的耐摩擦磨损性能。总体而言,制备的高强耐磨PBT复合材料,在工程塑料结构件、机械传动零件等领域具有潜在的应用价值。A series of poly(butylene terephthalate)(PBT)based composites with modified potassium titanate whiskers(MPTW)were prepared through in-situ polymerization.The surface properties and loading amount of MPTW were studied about their effects on the polymerization characteristics,microstructure,thermal stability,crystallization behavior,mechanical properties,friction-reduction,and wear-resistance of the PBT-based composites.The results show that the MPTW is in-situ chemical grafted with PBT,resulting in good dispersion and blurry phase interface.The in-situ grafted MPTW shows little effect on the thermal stability of PBT,but affects its semi-crystalline time.When the MPTW loading amount is 4%,mechanical properties of the composite reaches optimum,with a doubling of tensile strength and a tripling of impact strength compared to pure PBT.Additionally,the friction-reduction and wear-resistance of PBT are significantly improved with the addition of MPTW.Overall,the high-strength and wear-resistant PBT composites show potential application in the field of structural engineering plastic and mechanical transmission parts.

关 键 词：钛酸钾 聚对苯二甲酸丁二醇酯 结晶行为 力学性能 摩擦性能 

分 类 号：TB332[一般工业技术—材料科学与工程]