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ReducednGraphene Oxide Heterostructured Silver Nanoparticles SignificantlynEnhanced Thermal Conductivities in Hot-Pressed Electrospun PolyimidenNanocomposites 还原氧化石墨烯异质结构银纳米粒子显著增强热压静电纺丝聚酰亚胺纳米复合材料的导热性

Figshare Pub Date : 2019-06-24 DOI: 10.1021/acsami.9b10161.s001

Yongqiang Guo (2561341), Xutong Yang (6655868), Kunpeng Ruan (6911276), Jie Kong (702788), Mengyao Dong (1643110), Jiaoxia Zhang (4270720), Junwei Gu (1530058), Zhanhu Guo (1492291)

{"title":"ReducednGraphene Oxide Heterostructured Silver Nanoparticles SignificantlynEnhanced Thermal Conductivities in Hot-Pressed Electrospun PolyimidenNanocomposites","authors":"Yongqiang Guo (2561341), Xutong Yang (6655868), Kunpeng Ruan (6911276), Jie Kong (702788), Mengyao Dong (1643110), Jiaoxia Zhang (4270720), Junwei Gu (1530058), Zhanhu Guo (1492291)","doi":"10.1021/acsami.9b10161.s001","DOIUrl":"https://doi.org/10.1021/acsami.9b10161.s001","url":null,"abstract":"Graphene presentsnan extremely ultra-high thermal conductivity, well above other knownnthermally conductive fillers. However, graphene tends to aggregateneasily due to its strong intermolecular π–π interaction,nresulting in poor dispersion in the polymer matrix. In this study,nsilver nanoparticles anchored reduced graphene oxide (Ag/rGO) werenfirst prepared using one-pot synchronous reduction of Ag+ and GO solution via glucose. The thermally conductive (Ag/rGO)/polyimiden((Ag/rGO)/PI) nanocomposites were then obtained via electrospinningnthe in situ polymerized (Ag/rGO)/polyamide electrospun suspensionnfollowed by a hot-press technique. The thermal conductivity (λ),nglass transition temperature (Tg), andnheat resistance index (THRI) of the (Ag/rGO)/PInnanocomposites all increased with increasing the loading of Ag/rGOnfillers. When the mass fraction of Ag/rGO (the weight ratio of rGOnto Ag was 4:1) fillers was 15%, the corresponding (Ag/rGO)/PI nanocompositesnshowed a maximum λ of 2.12 W/(m K). The corresponding Tg and THRI valuesnwere also enhanced to 216.1 and 298.6 °C, respectively. Furthermore,nthermal conductivities calculated by our established improved thermalnconduction model were relatively closer to the experimental resultsnthan the results obtained from other classical models.","PeriodicalId":522370,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147895956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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