An Zhong MSc, Congzhen Xie PhD, Bin Gou MSc, Jiangang Zhou MSc, Huasong Xu MSc, Song Yu MSc, Daoming Zhang MSc, Chunhui Bi MSc, Hangchuan Cai MSc, Licheng Li PhD, Rui Wang PhD
{"title":"基于物理破碎的高导热材料热固性树脂可回收技术","authors":"An Zhong MSc, Congzhen Xie PhD, Bin Gou MSc, Jiangang Zhou MSc, Huasong Xu MSc, Song Yu MSc, Daoming Zhang MSc, Chunhui Bi MSc, Hangchuan Cai MSc, Licheng Li PhD, Rui Wang PhD","doi":"10.1002/eem2.12762","DOIUrl":null,"url":null,"abstract":"<p>Epoxy resin, characterized by prominent mechanical and electric-insulation properties, is the preferred material for packaging power electronic devices. Unfortunately, the efficient recycling and reuse of epoxy materials with thermally cross-linked molecular structures has become a daunting challenge. Here, we propose an economical and operable recycling strategy to regenerate waste epoxy resin into a high-performance material. Different particle size of waste epoxy micro-spheres (100–600 μm) with core-shell structure is obtained through simple mechanical crushing and boron nitride surface treatment. By using smattering epoxy monomer as an adhesive, an eco-friendly composite material with a “brick-wall structure” can be formed. The continuous boron nitride pathway with efficient thermal conductivity endows eco-friendly composite materials with a preeminent thermal conductivity of 3.71 W m<sup>−1</sup> K<sup>−1</sup> at a low content of 8.5 vol% h-BN, superior to pure epoxy resin (0.21 W m<sup>−1</sup> K<sup>−1</sup>). The composite, after secondary recycling and reuse, still maintains a thermal conductivity of 2.12 W m<sup>−1</sup> K<sup>−1</sup> and has mechanical and insulation properties comparable to the new epoxy resin (energy storage modulus of 2326.3 MPa and breakdown strength of 40.18 kV mm<sup>−1</sup>). This strategy expands the sustainable application prospects of thermosetting polymers, offering extremely high economic and environmental value.</p>","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"7 6","pages":""},"PeriodicalIF":13.0000,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.12762","citationCount":"0","resultStr":"{\"title\":\"Recyclable Technology of Thermosetting Resins for High Thermal Conductivity Materials Based on Physical Crushing\",\"authors\":\"An Zhong MSc, Congzhen Xie PhD, Bin Gou MSc, Jiangang Zhou MSc, Huasong Xu MSc, Song Yu MSc, Daoming Zhang MSc, Chunhui Bi MSc, Hangchuan Cai MSc, Licheng Li PhD, Rui Wang PhD\",\"doi\":\"10.1002/eem2.12762\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Epoxy resin, characterized by prominent mechanical and electric-insulation properties, is the preferred material for packaging power electronic devices. Unfortunately, the efficient recycling and reuse of epoxy materials with thermally cross-linked molecular structures has become a daunting challenge. Here, we propose an economical and operable recycling strategy to regenerate waste epoxy resin into a high-performance material. Different particle size of waste epoxy micro-spheres (100–600 μm) with core-shell structure is obtained through simple mechanical crushing and boron nitride surface treatment. By using smattering epoxy monomer as an adhesive, an eco-friendly composite material with a “brick-wall structure” can be formed. The continuous boron nitride pathway with efficient thermal conductivity endows eco-friendly composite materials with a preeminent thermal conductivity of 3.71 W m<sup>−1</sup> K<sup>−1</sup> at a low content of 8.5 vol% h-BN, superior to pure epoxy resin (0.21 W m<sup>−1</sup> K<sup>−1</sup>). The composite, after secondary recycling and reuse, still maintains a thermal conductivity of 2.12 W m<sup>−1</sup> K<sup>−1</sup> and has mechanical and insulation properties comparable to the new epoxy resin (energy storage modulus of 2326.3 MPa and breakdown strength of 40.18 kV mm<sup>−1</sup>). This strategy expands the sustainable application prospects of thermosetting polymers, offering extremely high economic and environmental value.</p>\",\"PeriodicalId\":11554,\"journal\":{\"name\":\"Energy & Environmental Materials\",\"volume\":\"7 6\",\"pages\":\"\"},\"PeriodicalIF\":13.0000,\"publicationDate\":\"2024-06-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.12762\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy & Environmental Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/eem2.12762\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Environmental Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eem2.12762","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
环氧树脂具有突出的机械和电气绝缘性能,是封装电力电子设备的首选材料。遗憾的是,如何有效回收和再利用具有热交联分子结构的环氧树脂材料已成为一项艰巨的挑战。在此,我们提出了一种经济、可操作的回收策略,将废弃环氧树脂再生为高性能材料。通过简单的机械粉碎和氮化硼表面处理,可获得不同粒径的具有核壳结构的废环氧微球(100-600 μm)。使用分散环氧单体作为粘合剂,可形成具有 "砖墙结构 "的环保型复合材料。具有高效导热性能的连续氮化硼通路使环保型复合材料在 8.5 vol% h-BN 低含量时的导热性能达到 3.71 W m-1 K-1,优于纯环氧树脂(0.21 W m-1 K-1)。经过二次回收和再利用后,该复合材料的导热系数仍保持在 2.12 W m-1 K-1 的水平,其机械和绝缘性能与新型环氧树脂相当(储能模量为 2326.3 兆帕,击穿强度为 40.18 千伏毫米-1)。这一战略拓展了热固性聚合物的可持续应用前景,具有极高的经济和环境价值。
Recyclable Technology of Thermosetting Resins for High Thermal Conductivity Materials Based on Physical Crushing
Epoxy resin, characterized by prominent mechanical and electric-insulation properties, is the preferred material for packaging power electronic devices. Unfortunately, the efficient recycling and reuse of epoxy materials with thermally cross-linked molecular structures has become a daunting challenge. Here, we propose an economical and operable recycling strategy to regenerate waste epoxy resin into a high-performance material. Different particle size of waste epoxy micro-spheres (100–600 μm) with core-shell structure is obtained through simple mechanical crushing and boron nitride surface treatment. By using smattering epoxy monomer as an adhesive, an eco-friendly composite material with a “brick-wall structure” can be formed. The continuous boron nitride pathway with efficient thermal conductivity endows eco-friendly composite materials with a preeminent thermal conductivity of 3.71 W m−1 K−1 at a low content of 8.5 vol% h-BN, superior to pure epoxy resin (0.21 W m−1 K−1). The composite, after secondary recycling and reuse, still maintains a thermal conductivity of 2.12 W m−1 K−1 and has mechanical and insulation properties comparable to the new epoxy resin (energy storage modulus of 2326.3 MPa and breakdown strength of 40.18 kV mm−1). This strategy expands the sustainable application prospects of thermosetting polymers, offering extremely high economic and environmental value.
期刊介绍:
Energy & Environmental Materials (EEM) is an international journal published by Zhengzhou University in collaboration with John Wiley & Sons, Inc. The journal aims to publish high quality research related to materials for energy harvesting, conversion, storage, and transport, as well as for creating a cleaner environment. EEM welcomes research work of significant general interest that has a high impact on society-relevant technological advances. The scope of the journal is intentionally broad, recognizing the complexity of issues and challenges related to energy and environmental materials. Therefore, interdisciplinary work across basic science and engineering disciplines is particularly encouraged. The areas covered by the journal include, but are not limited to, materials and composites for photovoltaics and photoelectrochemistry, bioprocessing, batteries, fuel cells, supercapacitors, clean air, and devices with multifunctionality. The readership of the journal includes chemical, physical, biological, materials, and environmental scientists and engineers from academia, industry, and policy-making.