Uniaxially stretched polyethylene/boron nitride nanocomposite films with metal-like thermal conductivity
Uniaxially stretched polyethylene/boron nitride nanocomposite films with metal-like thermal conductivity
复制标题
具有类金属导热性的单轴拉伸聚乙烯/氮化硼纳米复合薄膜
DOI：
10.1016/j.compscitech.2020.108154
复制
发表时间：
2020-08
影响因子：
9.1
通讯作者：
Dan Sun
中科院分区：
文献类型：
--
作者：
Richao Zhang;Zirui Huang;Zhihuan Huang;Meiling Zhong;Dongmian Zang;Ai Lu;Yuanfei Lin;Bronagh Millar;Graham Garet;Josh A. Turner;Gary Menary;Dehui Ji;Lixian Song;Quanchao Zhang;Jiali Zhang;Dan Sun
摘要在保持聚合物电绝缘性的同时实现超高导热性对于许多应用如热管理和封装是非常理想的。本工作通过熔融加工和单轴拉伸制备了聚乙烯/氮化硼纳米片（PE/BNNP）纳米复合薄膜。微观结构分析表明，拉伸复合膜具有共连续的网络结构，该结构由两条拉伸聚合物链桥接的取向片层和沿着拉伸方向排列的BNNPs组成。所得膜表现出高达106 Wm-1 K-1的类金属热导率，并且据信独特的网络结构使得能够在膜上进行有效的声子转移，从而导致上级热传输性能。这项工作为未来热管理应用的高性能功能性聚合物基复合材料的设计和可扩展制造提供了参考。
Abstract Achieving ultra-high thermal conductivity while maintaining the electrical insulation of polymers is highly desirable for many applications such as thermal management and packaging. In this work, polyethylene/boron nitride nanoplatelets (PE/BNNP) nanocomposite film was produced through melt processing followed by uniaxial stretching. Microstructural analysis reveals that the stretched composite film features a co-continuous network structure which consists of oriented lamellae bridged by both stretched polymer chains and aligned BNNPs along the stretching direction. The resulting film exhibit a metal-like thermal conductivity as high as 106Wm−1K−1 and it is believed that the unique network structure has enabled efficient phonon transfer across the film, resulting in superior thermal transporting performance. This work shines a light on the design and scalable manufacturing of high performance functional polymer-based composites for future thermal management applications.
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DOI：
10.1016/0016-0032(51)91075-7
发表时间：
2007
期刊：
--
影响因子：
--
作者：
P. Lettieri;T. Elson
通讯作者：
P. Lettieri;T. Elson
通过促进层间分子扩散增强聚乙烯和氮化硼多层片材的导热性
影响因子：
3.2
作者：
Shi Ai;Li Yue;Liu Wei;Lei Jun;Xu Ling;Li Zhong Ming
通讯作者：
Li Zhong Ming
烤肉串形成的临界应变
影响因子：
5.5
作者：
Tingzi Yan;Shiwang Cheng;Yuanhua Cong;Zijian Wang;Liangbin Li;Xiuhong Li;Guoqiang Pan;Yuye Fang;Fenggang Bian;Baijin Zhao
通讯作者：
Baijin Zhao
影响因子：
9.5
作者：
Richao Zhang;D. Sun;Ai Lu;S. Askari;M. Macias‐Montero;P. Joseph;D. Dixon;K. Ostrikov;P. Maguire
通讯作者：
Richao Zhang;D. Sun;Ai Lu;S. Askari;M. Macias‐Montero;P. Joseph;D. Dixon;K. Ostrikov;P. Maguire
影响因子：
8.6
作者：
Henry, Asegun;Chen, Gang
通讯作者：
Chen, Gang