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.
作者
戚加磊
姚超
左士祥
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)
出处
《高分子材料科学与工程》
CSCD
北大核心
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)。
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
potassium titanate
polybutylene terephthalate
crystallization behaviors
mechanical properties
fictional properties
