Self-lubricating functional microcapsules using melamine-formaldehyde resin encapsulating methyl silicone oil as core materials were synthesized by in situ polymerization method. And they are further adopted as antifriction additive to improve the tribological properties of binary and ternary epoxy (EP) composites, which were fabricated by incorporating microcapsules and the potassium hexatitanate whiskers (PTWs) into the EP matrix. The tribological behaviors of the as-synthesized EP composites have been evaluated by means of a block-on-ring high-speed wear tester. The results demonstrated that the friction coefficient and wear rate of EP /microcapsules binary composites decreased with the increase of microcapsule concentration due to the self-lubricating effect of the core material. For the EP /microcapsules/PTWs ternary composites, not only the mechanical properties and thermal stability PTWs were improved, but also the friction reduction and antiwear effect of the ternary composite are further enhanced due to the synergistic effect of PTWs and microcapsules.

中文翻译：

---

甲基硅油负载微胶囊改性和/或六钛酸钾晶须增强环氧复合材料的微观结构和摩擦学性能

以三聚氰胺-甲醛树脂包覆甲基硅油为核心材料，采用原位聚合法合成了自润滑功能性微胶囊。它们进一步被用作减摩添加剂，以改善二元和三元环氧树脂 (EP) 复合材料的摩擦学性能，这些复合材料是通过将微胶囊和六钛酸钾晶须 (PTW) 掺入 EP 基体中制成的。合成的 EP 复合材料的摩擦学行为已通过块环高速磨损试验机进行了评估。结果表明，由于芯材的自润滑作用，EP/微胶囊二元复合材料的摩擦系数和磨损率随着微胶囊浓度的增加而降低。对于 EP /微胶囊 / PTWs 三元复合材料，