合成填充了蓖麻油的聚合物微胶囊以增强环氧树脂的摩擦学特性

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES
Mariza Fernandes, Juliana Souza, Ana Leticia Santos, Pamella Medeiros, Mauricio Bomio, Maria Costa
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引用次数: 0

摘要

在聚合物基体中添加微胶囊(MCs)越来越受到关注,因为这有助于获得具有更好的机械、化学和功能特性的复合材料,从而提高其摩擦学特性。在这项工作中,采用原位聚合法合成了填充蓖麻油的聚(脲醛)(PUF)微胶囊,然后以 2.5%、5% 和 10%的质量百分比添加到环氧树脂基体中。经傅立叶变换红外光谱(FTIR)和扫描电子显微镜(SEM)图像确认,获得了具有所需成分的球形微胶囊。使用粗糙度参数 Ra、Rq、Rz、Rsk 和 Rku 对复合材料的表面进行了分析。使用针盘配置测试评估了初步的摩擦学特性。摩擦学测试后,使用 SEM 图像对磨损轨迹进行了表征。所研究的复合材料的摩擦系数降低了约 50%,考虑到粗糙度和轨迹下沉的特征,含有 2.5% 微胶囊的试样具有最佳的自润滑性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synthesis of polymeric microcapsules filled with castor oil to enhance tribological properties in epoxy resin
The addition of microcapsules (MCs) to a polymer matrix has been gaining attention because it facilitates the attainment of composite materials with better mechanical, chemical and functional properties that enhance its tribological properties. In this work, poly (urea formaldehyde) (PUF) microcapsules filled with castor oil were synthesized using an in situ polymerization method and then added to the epoxy matrix at mass percentages of 2.5%, 5% and 10%. Spherical microcapsules were obtained with the desired composition, confirmed by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) images. The surface of the composites was analyzed using the roughness parameters Ra, Rq, Rz, Rsk and Rku. The preliminary tribological properties were evaluated using tests with a pin-on-disk configuration. After the tribological tests, the wear track was characterized using SEM images. There was a reduction of approximately 50% in the coefficient of friction of the composites studied and the specimen with 2.5% microcapsules had the best self-lubricating performance, considering the characterizations of roughness and track sinking.
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来源期刊
Journal of Composite Materials
Journal of Composite Materials 工程技术-材料科学:复合
CiteScore
5.40
自引率
6.90%
发文量
274
审稿时长
6.8 months
期刊介绍: Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).
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