高强耐磨PBT/PET合金制备及性能研究  

Study on Preparation and Properties of PBT/PET Alloy with High Strength and Anti-friction

作　　者：张志军[1] 陈智军[1] 龚建彬[1] 姜其斌[1] 

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412000

出　　处：《塑料工业》2013年第7期40-43,共4页China Plastics Industry

摘　　要：通过加入增容剂甲基丙烯酸环氧丙酯接枝乙烯辛烯共聚物(POE-g-GMA)及钛酸钾偶联剂活化处理的钛酸钾晶须(PTW),制得了一种高强耐磨聚对苯二甲酸丁二醇酯(PBT)/聚对苯二甲酸乙二醇酯(PET)合金。考察了增容剂、PTW的用量对合金力学和摩擦性能的影响,通过电子扫描显微镜对比了改性前后的PBT/PET合金摩擦试验后的样条表面的微观结构形态。结果表明,POE-g-GMA能改善PBT/PET合金的相容性;活化钛酸钾晶须的加入能有效降低PBT/PET合金的摩擦因数和磨耗;PBT/PET/POE-g-GMA/PTW/其他加工助剂按质量比为41/41/6/10/2配比,可制得综合性能优良的高强耐磨合金材料,其冲击强度8.4 kJ/m2,拉伸强度61.2 MPa,弯曲强度81.5 MPa,摩擦因数0.13。A kind of high strength and anti-friction PBT/PET alloy was prepared with adding compatibilizer POE-g-GMA, activated potassium titanate whiskers （PTW） and other assistant reagent. The effects of adding compatibilizer and PTW content on the alloy＇s properties and anti-friction of the PBT/PET alloy were investigated. The morphologies of the worn surface of the PBT/PET alloy before and after modification were compared through the friction tests by SEM. The results showed that the additives of POE-g-GMA can greatly improve the compatibility of PBT/PET. The addition of potassium titanate whisker could decrease the coefficient of friction and wear. When the mass ratio of PBT, PET, compatibilizer, PTW, assistant reagent was 41：41：6：10：2, the alloy had the optimal comprehensive properties, the impact strength 8.4 kJ/m2, tensile strength 61.2 MPa, flexural strength 81.5 MPa and friction coefficient 0. 13.

关 键 词：合金 聚对苯二甲酸丁二醇酯 聚对苯二甲酸乙二醇酯 增容剂 钛酸钾晶须 力学性能 摩擦性能 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]