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首页> 外文期刊>Journal of surface investigation: x-ray, synchrotron and neutron techniques >Change in the Surface of Elastomers Based on Epichlorhydrin Rubber Modified by Functionalized Carbon Nanotubes
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Change in the Surface of Elastomers Based on Epichlorhydrin Rubber Modified by Functionalized Carbon Nanotubes

机译：基于通过官能化碳纳米管改性的替稀链橡胶改变弹性体的变化

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摘要

In this paper, we study the possibilities of the modification of epichlorohydrin rubbers by special-type functionalized carbon nanotubes activated by oxygen. The purpose of this modification is to improve the tribological properties and increase frost resistance. Two types of samples with the addition of 1 and 10% nanotubes are compared with the initial unmodified rubber. The operating conditions are simulated using tribological tests performed in the express mode. Electron microscopic surface studies of the initial elastomer and samples after tribological tests reveal a change. The introduction of nanotubes is shown to promote the formation of agglomerates of a characteristic shape, increasing the surface uniformity, and its greater stability during friction. Differences in the surface topography are already evident in samples with 1% nanotubes and noticeably increase in samples with 10% nanotubes. Using scanning probe microscopy, sample sections (topography and elastic properties) are studied after tribological tests. The surface at the cut edge is found to be denser and smoother than in the bulk layers of the sample as the elastic moduli of these regions are almost identical. The introduction of activated functionalized carbon nanotubes into epichlorohydrin rubber is shown to lead to hardening of the elastomer and increases its wear resistance.
机译：本文研究了氧活化的特殊功能化碳纳米管对环氧氯丙烷橡胶进行改性的可能性。这种改性的目的是提高摩擦学性能和抗冻性。将添加1%和10%纳米管的两种样品与初始未改性橡胶进行比较。使用在快速模式下进行的摩擦学试验模拟操作条件。对初始弹性体和摩擦学试验后的样品进行的电子显微镜表面研究揭示了一种变化。研究表明，纳米管的引入可以促进特征形状团聚体的形成，提高表面均匀性，并提高摩擦过程中的稳定性。在含1%纳米管的样品中，表面形貌的差异已经很明显，而在含10%纳米管的样品中，表面形貌的差异显著增加。在摩擦学试验后，使用扫描探针显微镜研究样品截面（形貌和弹性特性）。由于这些区域的弹性模量几乎相同，因此发现切割边缘处的表面比样品的本体层中的表面更致密、更光滑。在环氧氯丙烷橡胶中引入活性功能化碳纳米管可导致弹性体硬化并提高其耐磨性。

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