Thermal conductivity of natural rubber nanocomposites with hybrid fillers

作     者：Junping Song Xiteng Li Kaiyan Tian Lianxiang Ma Wei Li Shichune Yao 

作者机构：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 Qingdao 266061 China Department of Energy Engineering Zhejiang University Hangzhou 310027 China Department of Mechanical Engineering Carnegie Mellon University Pittsburgh PA 15213-3890 USA 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2019年第27卷第4期

页      面：928-934页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 

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

主　　题：Modified carbon nanotube Carbon black Hybrid filler Natural rubber Thermal conductivity 

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.