A new type of polymer derivative, carboxyl‐terminated butadiene nitrile rubber‐based quaternary ammonium salt (CTBN‐QAS), has been synthesized and used for the functionalization of sodium montmorillonite (MMT‐Na) via a cationic exchange process. The resulting CTBN‐QAS‐modified MMT (CTBN‐QAS‐MMT) exhibits exfoliated and/or intercalated structures as indicated by X‐ray diffraction (XRD) analysis. Further CTBN‐QAS‐MMT was incorporated into diglycidyl ether of bisphenol A (DGEBA) with different loadings to produce organic/inorganic hybrid epoxy nanocomposites. Studies were conducted on tribological behavior and dynamic mechanical properties by ring‐on‐block wear tester and dynamic mechanical analysis, respectively. The results show that as‐prepared nanostructured epoxy has better wear resistance and lower friction coefficient than pure epoxy polymer (EP), and the best wear resistance is obtained at 6 phr (parts per hundred) CTBN‐QAS‐MMT‐modified EP. Wear surface morphology analysis shows that the friction mechanism is abrasive wear. Additionally, the good friction resistance and decreased wear loss are correlated with higher glassy storage modulus and lower tan δ. The improved tribological behavior is due to the formation of hybrid organic/inorganic nanostructured epoxy material.

中文翻译：

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液态丁腈橡胶基季铵盐改性蒙脱土和环氧树脂的有机/无机杂化纳米结构复合材料：制备和摩擦学行为

已经合成了一种新型的聚合物衍生物，即羧基末端的丁二烯丁腈橡胶基季铵盐（CTBN-QAS），并通过阳离子交换过程用于蒙脱土钠（MMT-Na）的功能化。X射线衍射（XRD）分析表明，所得的CTBN-QAS改性MMT（CTBN-QAS-MMT）表现出剥离和/或插层结构。进一步将CTBN-QAS-MMT掺入具有不同负载量的双酚A二缩水甘油醚（DGEBA）中，以生产有机/无机杂化环氧纳米复合材料。分别通过环上磨损测试仪和动态力学分析对摩擦学行为和动态力学性能进行了研究。结果表明，与纯环氧聚合物（EP）相比，制备的纳米结构环氧树脂具有更好的耐磨性和更低的摩擦系数，并且在6 phr（份/百分率）CTBN-QAS-MMT改性的EP时可获得最佳的耐磨性。磨损表面形态分析表明，摩擦机理是磨料磨损。此外，良好的耐磨性和降低的磨损损失与较高的玻璃态储能模量和较低的棕褐色相关δ。改善的摩擦学性能归因于有机/无机纳米结构混合环氧树脂材料的形成。