• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Facile fabrication of long-chain alkyl functionalized ultrafine reduced graphene oxide nanocomposites for enhanced tribological performance
【24h】

Facile fabrication of long-chain alkyl functionalized ultrafine reduced graphene oxide nanocomposites for enhanced tribological performance

机译：轻松制造长链烷基官能化的超细还原氧化石墨烯纳米复合材料，以增强摩擦性能

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Due to their ultrathin 2D laminated structure as well as excellent mechanical and thermal stabilities, ultrafine graphene-based nanoparticles exhibit fascinating advantages as highly-efficient lubricant additives. However, it remains a daunting challenge to achieve good and durable dispersion of these graphene-based nanoparticles in lubricating oils. Herein, we report a facile and efficient integration strategy involving particle size miniaturization, surface grafting with octadecyl alcohol (OA), and partial chemical reduction to prepare a novel long-chain alkyl functionalized ultrafine reduced graphene oxide (RGO- g -OA) with highly-dispersive capacity and superior tribological performance. The chemical composition and structural characteristics, microstructural morphology, and particle size distribution of RGO- g -OA were systematically investigated. Combining significantly improved lipophilicity derived from the long-chain alkyl grafting and partial chemical reduction with the small-size effect gave rise to outstanding long-term dispersion stability (as long as one month) of RGO- g -OA in the finished oil. Moreover, the friction coefficient and wear volume of finished oil with merely 0.005?wt% RGO- g -OA greatly reduced to 0.065 and 10?316 μm ~(3) , decreased by 9.7% and 44%, respectively, compared to those of pristine finished oil, demonstrating remarkable friction reduction and anti-wear performances. Consequently, owing to the characteristics of facile fabrication, durable dispersion stability, and superior tribological performance at an extremely low content, this novel nanoadditive shows a promising application potential in the tribology field.
机译：由于其超薄的2D层压结构以及出色的机械和热稳定性，超细石墨烯基纳米颗粒作为高效润滑剂添加剂具有令人着迷的优势。然而，实现这些石墨烯基纳米颗粒在润滑油中的良好且持久的分散仍然是艰巨的挑战。在本文中，我们报告了一种简便有效的整合策略，该方法涉及粒度微型化，十八烷基醇（OA）的表面接枝以及部分化学还原，以制备一种新型的长链烷基官能化超细还原氧化石墨烯（RGO- g -OA）， -分散能力和优异的摩擦学性能。系统地研究了RGO-g -OA的化学组成和结构特征，微观结构形态以及粒径分布。结合长链烷基接枝产生的显着改善的亲脂性和部分化学还原与小尺寸效应相结合，可以使RGO-g -OA在成品油中具有出色的长期分散稳定性（长达一个月）。此外，仅RGO-g -OA为0.005？wt％的成品油的摩擦系数和磨损量大大降低，分别为0.065和10？316μm〜（3），分别降低了9.7％和44％。原始的成品油，具有显着的减摩和抗磨性能。因此，由于在极低的含量下易于制造，持久的分散稳定性和优异的摩擦学性能的特点，这种新型纳米添加剂在摩擦学领域显示出了广阔的应用前景。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号