Thermal conductivity of GP/ZnO@CNTs nanocomposites improved greatly by orientation of CNTs under shear field

被引：18

作者：

Dong, Mengjie ^{[1
]}

Zhang, Jichuan ^{[1
,3
]}

Hou, Guanyi ^{[1
]}

Liu, Li ^{[1
,4
]}

Qu, Xiubo ^{[1
]}

Yu, Yang ^{[2
]}

Yuan, Chongyang ^{[2
]}

Wang, Xiaoyan ^{[2
]}

机构：

[1] Beijing Univ Chem Technol, Beijing Engn Res Ctr Adv Elastomers, Beijing 100029, Peoples R China

[2] Peking Univ, Dept Cardiol & Endodontol, Sch & Hosp Stomatol, Beijing 100081, Peoples R China

[3] Beijing Univ Chem Technol, Engn Res Ctr Elastomer Mat Energy Conservat & Res, Minist Educ, Beijing 100029, Peoples R China

[4] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

来源：

COMPOSITES COMMUNICATIONS | 2020年 / 17卷

基金：

中国国家自然科学基金;

关键词：

Thermal conductivity; Orientation; Carbon nanotubes; Shear field; Gutta-percha point; HYBRID NETWORK STRUCTURE; CARBON NANOTUBES; COMPOSITES; ALIGNMENT;

D O I：

10.1016/j.coco.2019.11.010

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The thermal conductivity (TC) of gutta-percha, zinc oxide, and carbon nanotubes nanocomposites (GP/ZnO@CNTs) is improved greatly by the oriented CNTs, which is induced by shear field of the capillary rheometer. Furthermore, the effects of shear rate and temperature on the orientation of CNTs and the TC of the nanocomposites are investigated. The results of Raman show that the degree of orientation of CNTs increases with the increment of shear rate and/or temperature, which greatly improves the thermal conductance of the nanocomposites when the orientation degree is equal to 10.8. Compared with the GP/ZnO@CNTs nanocomposites with random CNTs, the highest TC of GP/ZnO@CNTs nanocomposites with oriented CNTs is increased by 81.2%, which is up to 2.50 W m(-1)K(-1).

引用

页码：61 / 65

页数：5

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