Mariza Fernandes, Juliana Souza, Ana Leticia Santos, Pamella Medeiros, Mauricio Bomio, Maria Costa
{"title":"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","authors":"Mariza Fernandes, Juliana Souza, Ana Leticia Santos, Pamella Medeiros, Mauricio Bomio, Maria Costa","doi":"10.1177/00219983241276932","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis of polymeric microcapsules filled with castor oil to enhance tribological properties in epoxy resin\",\"authors\":\"Mariza Fernandes, Juliana Souza, Ana Leticia Santos, Pamella Medeiros, Mauricio Bomio, Maria Costa\",\"doi\":\"10.1177/00219983241276932\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"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.\",\"PeriodicalId\":15489,\"journal\":{\"name\":\"Journal of Composite Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-08-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Composite Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1177/00219983241276932\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, COMPOSITES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Composite Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1177/00219983241276932","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
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.
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).