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首页> 外文期刊>RSC Advances >Enhanced compatibility, morphology, rheological and mechanical properties of carboxylated acrylonitrile butadiene rubber/chloroprene rubber/graphene nanocomposites: effect of compatibilizer and graphene content
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Enhanced compatibility, morphology, rheological and mechanical properties of carboxylated acrylonitrile butadiene rubber/chloroprene rubber/graphene nanocomposites: effect of compatibilizer and graphene content

机译：羧化丙烯腈丁二烯橡胶/氯丁烯橡胶/石墨烯纳米复合材料增强的相容性，形态，流变和力学性能：增容剂和石墨烯含量的影响

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Elastomeric nanocomposites were prepared from carboxylated acrylonitrile butadiene rubber/chloroprene rubber (XNBR/CR), graphene and a glycidyl methacrylate (GMA)-grafted XNBR (XNBR- g -GMA) compatibilizer by using a two-roll mill. The effect of graphene and XNBR- g -GMA compatibilizer on curing characteristics, rheological and mechanical properties and morphology of the nanocomposites was investigated. The curing properties and the morphology of the nanocomposites were studied by rheometry, SEM and TEM, respectively. The results of rheometry showed that by adding the XNBR- g -GMA compatibilizer and increasing the graphene content, the scorch time and optimum curing time decreased, but the torque increased, while the curing time increased with increasing CR percentage in the blend. Also, the results of DMTA tests showed that by adding the XNBR- g -GMA compatibilizer, there was compatibility between CR and XNBR and the dispersion of graphene in the XNBR/CR matrix was improved. This phenomenon was confirmed by direct observation of exfoliated graphene nanosheets by TEM. Also, the addition of XNBR- g -GMA and the increase of graphene content in the XNBR/CR matrix caused the fracture surface of the samples to be roughened and the size of dispersed phase (CR) in the XNBR matrix becomes smaller. The results of mechanical properties showed that the addition of the XNBR- g -GMA and increasing the graphene content resulted in increased hardness, fatigue strength, tensile strength, modulus and elongation-at-break.
机译：通过使用双辊研磨机用羧化丙烯腈丁二烯橡胶/氯丁烯橡胶（XNBr / Cr），石墨烯和甲基丙烯酸缩水甘油酯（GMA） - 移植XNBR（XNBR-G-GMA）增容剂制备弹性纳米复合材料。研究了石墨烯和XNBR-G-GMA相容剂对纳米复合材料的固化特性，流变学和力学性能和形态的影响。通过流变学，SEM和TEM研究了纳米复合材料的固化性能和形态。流变学的结果表明，通过添加XNBR-G-GMA增容剂并增加石墨烯含量，焦焦时间和最佳固化时间减小，但扭矩增加，而固化时间随着混合物中的CR百分比增加而增加。而且，DMTA试验的结果表明，通过添加XNBR-G-GMA相容剂，在Cr和XNBR之间存在相容性，并改善了XNBr / Cr基质中石墨烯的分散。通过TEM直接观察剥落的石墨烯纳米片来证实这种现象。此外，XNBR-G-GMA的添加和XNBr / Cr基质中的石墨烯含量的增加导致待粗糙的样品的断裂表面，并且XNBR基质中的分散相（Cr）的尺寸变小。机械性能的结果表明，添加XNBr-G-GMA并增加石墨烯含量导致硬度，疲劳强度，拉伸强度，模量和伸长率增加。

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