{"title":"EP/FGi 复合材料热性能和机械性能的协同效应可提高摩擦学性能","authors":"","doi":"10.1016/j.coco.2024.102063","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigated the influence of fluorinated graphite (FGi) on the thermal and mechanical attributes of epoxy/fluorinated graphite (EP/FGi) composites. The TGA analysis revealed that the temperature of 5 % weight loss (Td5) increased from 281.5 °C for EP to 364.0 °C for EP/2%FGi, the heat-resistance index (THRI) increased from 170.2 to 190.6. The composite exhibited a significant improvement in hardness at 1 wt% FGi content. The bending test results indicated that the addition of 2 wt% FGi to the EP increased the bending strength, modulus, and toughness of the samples by 35.2 %, 29.6 %, and 54.8 %, respectively. Analysis of the worn surface morphology indicated that composites with FGi exhibited reduced damage and a smoother surface compared to those without FGi. The superior heat capacity and heat transfer properties of FGi mitigated the build-up of frictional heat, and high hardness diminished cutting and fracture during friction, and the enhanced toughness provided by FGi delayed the generation of fatigue cracks during the friction process. The excellent thermal and mechanical properties of EP improved by FGi synergistically improved the tribological properties of the material.</p></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synergistic effect of thermal and mechanical properties of EP/FGi composites to enhance tribological performance\",\"authors\":\"\",\"doi\":\"10.1016/j.coco.2024.102063\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study investigated the influence of fluorinated graphite (FGi) on the thermal and mechanical attributes of epoxy/fluorinated graphite (EP/FGi) composites. The TGA analysis revealed that the temperature of 5 % weight loss (Td5) increased from 281.5 °C for EP to 364.0 °C for EP/2%FGi, the heat-resistance index (THRI) increased from 170.2 to 190.6. The composite exhibited a significant improvement in hardness at 1 wt% FGi content. The bending test results indicated that the addition of 2 wt% FGi to the EP increased the bending strength, modulus, and toughness of the samples by 35.2 %, 29.6 %, and 54.8 %, respectively. Analysis of the worn surface morphology indicated that composites with FGi exhibited reduced damage and a smoother surface compared to those without FGi. The superior heat capacity and heat transfer properties of FGi mitigated the build-up of frictional heat, and high hardness diminished cutting and fracture during friction, and the enhanced toughness provided by FGi delayed the generation of fatigue cracks during the friction process. The excellent thermal and mechanical properties of EP improved by FGi synergistically improved the tribological properties of the material.</p></div>\",\"PeriodicalId\":10533,\"journal\":{\"name\":\"Composites Communications\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.5000,\"publicationDate\":\"2024-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Composites Communications\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2452213924002547\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COMPOSITES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Communications","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2452213924002547","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
Synergistic effect of thermal and mechanical properties of EP/FGi composites to enhance tribological performance
This study investigated the influence of fluorinated graphite (FGi) on the thermal and mechanical attributes of epoxy/fluorinated graphite (EP/FGi) composites. The TGA analysis revealed that the temperature of 5 % weight loss (Td5) increased from 281.5 °C for EP to 364.0 °C for EP/2%FGi, the heat-resistance index (THRI) increased from 170.2 to 190.6. The composite exhibited a significant improvement in hardness at 1 wt% FGi content. The bending test results indicated that the addition of 2 wt% FGi to the EP increased the bending strength, modulus, and toughness of the samples by 35.2 %, 29.6 %, and 54.8 %, respectively. Analysis of the worn surface morphology indicated that composites with FGi exhibited reduced damage and a smoother surface compared to those without FGi. The superior heat capacity and heat transfer properties of FGi mitigated the build-up of frictional heat, and high hardness diminished cutting and fracture during friction, and the enhanced toughness provided by FGi delayed the generation of fatigue cracks during the friction process. The excellent thermal and mechanical properties of EP improved by FGi synergistically improved the tribological properties of the material.
期刊介绍：
Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.
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