Synergistic effect of thermal and mechanical properties of EP/FGi composites to enhance tribological performance

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2024-09-04 DOI:10.1016/j.coco.2024.102063

{"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}

引用次数: 0

Abstract

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.

查看原文本刊更多论文

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

本研究探讨了氟化石墨（FGi）对环氧树脂/氟化石墨（EP/FGi）复合材料的热性能和机械性能的影响。TGA 分析表明，失重 5% 的温度（Td5）从 EP 的 281.5 ℃ 上升到 EP/2%FGi 的 364.0 ℃，耐热指数（THRI）从 170.2 上升到 190.6。当 FGi 含量为 1 wt% 时，复合材料的硬度明显提高。弯曲测试结果表明，在 EP 中添加 2 wt% 的 FGi 后，样品的弯曲强度、模量和韧性分别提高了 35.2%、29.6% 和 54.8%。对磨损表面形态的分析表明，与不添加 FGi 的复合材料相比，添加 FGi 的复合材料损伤更少，表面更光滑。FGi 优越的热容量和传热性能减轻了摩擦热的积累，高硬度减少了摩擦过程中的切削和断裂，FGi 增强的韧性延缓了摩擦过程中疲劳裂纹的产生。FGi 改善了 EP 的优异热性能和机械性能，从而协同改善了材料的摩擦学性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

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.