有机无机掺杂微胶囊的制备及摩擦学性能  

Preparation and Tribological Properties of Organic-Inorganic Doped Microcapsule

作　　者：杨保平[1] 李雪 慕波[1] 崔锦峰[1] 郭军红[1] Baoping Yang;Xue Li;Bo Mu;Jinfeng Cui;Junho Guo(College of Petroleum and Chemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学石油化工学院

出　　处：《高分子材料科学与工程》2019年第11期161-167,173,共8页Polymer Materials Science & Engineering

摘　　要：采用原位聚合法,以甲基硅油为芯材,三聚氰胺-甲醛树脂(MF树脂)和氧化锌纳米棒为壁材,得到复合壁材自润滑微胶囊,通过浇注聚合法制备了环氧树脂自润滑微胶囊复合材料。通过扫描电镜、热重分析、MRH环块摩擦试验机、万能拉伸试验机,考察了微胶囊对环氧树脂复合材料力学、热学及摩擦学性能的影响。复合材料的性能测试结果表明,所制得的复合壁材微胶囊在EP基体中结构清晰、结构新颖、形状规则--呈现"类海胆"结构。当加入25%的BSLMs后,复合材料初始分解温度上升了120℃,平均摩擦系数和磨损率分别降低了57.68%、45.2%,其拉伸强度和模量较纯样分别增加了7.53%和5.92%,弯曲强度和弯曲模量分别升高了5.39%和3.72%。这是由于纳米氧化锌棒的增强作用,随着其含量的增加,复合材料的热稳定性能、力学性能均相对单壁材微胶囊复合材料有所提高,同时摩擦学性能有了明显改善,极大地提高了复合材料的综合使用性能。Methyl silicone oil was adopted as core material, melamine formaldehyde resin and zinc oxide nanorods as hybrid shell material, self-lubricating microcapsules were obtained by in situ polymerization. Epoxy/microcapsule composites were fabricated by casting polymerization. The effects of microcapsules contents on the mechanical, thermal and tribological properties of epoxy composites were investigated by scanning electron microscope(SEM), thermogravimetric analysis(TGA), MRH ring block friction tester and universal tensile tester. The results show that the microcapsules exhibit a novel and neat structure –the "sea urchin like" structure. The performance test results of the composites show that after the addition of 25% binary shell microcapsule, the initial decomposition temperature of the composites is increased by 120 ℃, the average friction coefficient and the wear rate are decreased by 57.68% and 45.2%, respectively, the tensile strength and modulus of the composite are increased by 7.53% and 5.92%, respectively and the bending strength and flexural modulus are increased by 5.39% and 3.72%, respectively. Results of the friction and wear properties of composites demonstrate when the concentration of the binary shell microcapsules increases, the thermal stability and mechanical properties of the composites are enhanced comparaed with those of the single shell microencapsulated composites. Meanwhile, the tribological properties are improved greatly due to the strengthening effect of the ZnO nanorods, they could impart an excellent comprehensive utilization efficiency to the composites.

关 键 词：氧化锌纳米棒 环氧/微胶囊复合材料 复合壁材微胶囊 润滑 减摩 

分 类 号：TQ316.33[化学工程—高聚物工业]