Thermal conductivity of natural rubber nanocomposites with hybrid fillers

论文摘要

Natural rubber nanocomposites filled with hybrid fillers of multi-walled carbon nanotubes（CNTs） and carbon black（CB） were prepared. CNTs were ultrasonically modified in mixture of hydrogen peroxide（H2O2） and distilled water（H2O）. The functional groups on the surface of CNTs, changes in nanotube structure and morphology were characterized by Fourier transform infrared spectroscopy（FT-IR）, Raman Spectroscopy, and transmission electron microscopy（TEM）. It shows that hydroxyl（OH·） is successfully introduced. The surface defects of modified CNTs were obviously higher than those of original CNTs, and the degree of agglomeration was greatly reduced. Thermal conductivity of the composites was tested by protection heat flow meter method. Compared with unmodified CNTs/CB filling system, the thermal conductivity of hybrid composites is improved by an average of 5.8% with 1.5 phr（phr is parts per hundred rubber） of hydroxyl CNTs and 40 phr of CB filled. A three-dimensional heat conduction network composed of hydroxyl CNTs and CB, as observed by TEM, contributes to the good properties. Thermal conductivity of the hybrid composites increases as temperature rises. The mechanical properties of hybrid composites are also good with hydroxyl CNTs filled nanocomposites; the tensile strength, 100% and 300% tensile stress are improved by 10.1%, 22.4% and 26.2% respectively.

论文目录

• 1. Introduction
• 2. Experimental
•   2.1. Materials
•   2.2. Synthesis of hydroxyl CNTs
•   2.3. Preparation of composites
•   2.4. Characterization
• 3. Results and Discussion
•   3.1. Functional characterization of CNTs
•     3.1.1. FT-IR measurement
•     3.1.2. Raman measurement
•     3.1.3. TEM measurement
•   3.2. Characterization of nanocomposites
•     3.2.1. TEM measurement of nanocomposites
•     3.2.2. Vulcanization characteristics
•     3.2.3. Mechanical properties
•     3.2.4. Thermal conductivity measurements and reinforcement mechanism
• 4. Conclusions

文章来源

类型: 期刊论文

作者: Junping Song,Xiteng Li,Kaiyan Tian,Lianxiang Ma,Wei Li,Shichune Yao

来源: Chinese Journal of Chemical Engineering 2019年04期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 有机化工,材料科学

单位: Key Laboratory of Rubber-plastics,Ministry of Education,Shandong Provincial Key Laboratory of Rubber-plastics,Chinese and German School of Science and Technology,College of Electromechanical Engineering,Qingdao University of Science and Technology,Department of Energy Engineering,Zhejiang University,Department of Mechanical Engineering,Carnegie Mellon University

基金: Supported by the National Natural Science Foundation of China(51606107,51576102),the Collaborative Innovation Project of Green Tire and Rubber(0200501436)

分类号: TQ332;TB33

页码: 928-934

总页数: 7

文件大小: 4236K

下载量: 16