NIMTE OpenIR  > 2018专题
Graphene size-dependent modulation of graphene frameworks contributing to the superior thermal conductivity of epoxy composites
Hou, Hao; Dai, Wen; Yan, Qingwei; Lv, Le; Alam, Fakhr E.; Yang, Minghui; Yao, Yagang; Zeng, Xiaoliang; Xu, Jian-Bin; Yu, Jinhong; Jiang, Nan; Lin, Cheng-Te
2018
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
卷号6期号:25页码:12091-12097
摘要Vacuum filtration is a highly effective and easy scale-up approach and has been widely used to fabricate graphene monoliths, such as graphene paper and graphene frameworks for various applications. In general, the microstructure of filtrated monoliths exhibits layer-by-layer stacking of graphene sheets due to the directional flow-induced assembly process. In this work, we found that the horizontally oriented structure of filtrated graphene frameworks can be modulated to an approximately isotropic arrangement by lowering the lateral size of graphene sheets. This size-dependent microstructure transition from anisotropic to isotropic was further confirmed by measuring the in- and through-plane thermal conductivity of the graphene/epoxy composites with different arrangements of graphene frameworks as a filler. Optimally, we obtained an epoxy composite embedded with a quasi-isotropic graphene framework (QIGF) by a simple two-step process: vacuum filtration of small graphene sheets to obtain the framework followed by the infiltration of epoxy resin. Based on the interconnected graphene sheets with an approximately isotropic arrangement, QIGF provides heat channels of graphene-graphene along both the in- and through-plane directions within epoxy. With a low graphene loading of 5.5 wt%, QIGF/epoxy (QIGF/EP) presents in- and through-plane thermal conductivities of 10.0 and 5.4 W mK(-1), respectively, which are equivalent to approximate to 55 and 29 times higher than those of neat epoxy. As compared to the current graphene/epoxy composites prepared by various methods, our QIGF/EP has the highest thermal conductivity value with this level of filler loading. Our findings provide an insight for the development of polymer composites for thermal management applications in industry.
关键词Polyimide Composites Transport-properties Polymer Composites Layer Graphene Nanocomposites Oxide Foam Nanotubes Hybrid Filler
学科领域Materials Science ; Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17324
专题2018专题
推荐引用方式
GB/T 7714
Hou, Hao,Dai, Wen,Yan, Qingwei,et al. Graphene size-dependent modulation of graphene frameworks contributing to the superior thermal conductivity of epoxy composites[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(25):12091-12097.
APA Hou, Hao.,Dai, Wen.,Yan, Qingwei.,Lv, Le.,Alam, Fakhr E..,...&Lin, Cheng-Te.(2018).Graphene size-dependent modulation of graphene frameworks contributing to the superior thermal conductivity of epoxy composites.JOURNAL OF MATERIALS CHEMISTRY A,6(25),12091-12097.
MLA Hou, Hao,et al."Graphene size-dependent modulation of graphene frameworks contributing to the superior thermal conductivity of epoxy composites".JOURNAL OF MATERIALS CHEMISTRY A 6.25(2018):12091-12097.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Hou, Hao]的文章
[Dai, Wen]的文章
[Yan, Qingwei]的文章
百度学术
百度学术中相似的文章
[Hou, Hao]的文章
[Dai, Wen]的文章
[Yan, Qingwei]的文章
必应学术
必应学术中相似的文章
[Hou, Hao]的文章
[Dai, Wen]的文章
[Yan, Qingwei]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。