THREE-DIMENSIONAL NUMERICAL SIMULATION RESEARCH OF THERMAL CONDUCTIVITY OF Cu/EP COMPOSITE

Abstract

Abstract: Thermal conductivity of Cu/EP composite was studied by numerical simulation method. A 3D model of particles random distribution was established by ANSYS/APDL parametric finite element analysis technology. The effect of model size, volume fraction, single particle size or normal distribution particle sizes, particle shape, particle size and particles distribution on thermal conductivity of Cu/EP composites were investigated. The simulation results show that when the length of thermal conductivity model is greater than 100μm, the thermal conductivity is close to stabilization. Thermal conductivity of Cu/EP composite increases with volume fraction, and the magnitude of increase becomes bigger and bigger. Filling same particle size particles and normal distribution particle sizes particles, thermal conductivities of them keep pace with each other. Particle size has effect on thermal conductivity, and the change law is not monotonous increasing or decreasing. Cube fillers enhance the performance of thermal conductivity better than sphere fillers. The thermal conductivity will be different for different particles distribution in the matrix. When the particles are arranged along the direction of heat flow, the enhancement is significant.

Key words: copper, EP, thermal conductivity, finite element analysis

CLC Number:

TB332

LU Man, BAO Rui, YAN Shi-lin, SHAO Shi-dong. THREE-DIMENSIONAL NUMERICAL SIMULATION RESEARCH OF THERMAL CONDUCTIVITY OF Cu/EP COMPOSITE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(11): 9-14.

References

[1] 孔娇月, 陈立新, 蔡聿锋. 导热高分子复合材料研究进展. 中国塑料, 2011, (3):7-12.
[2] 范伟, 冯刚, 赵加伟. 导热高分子复合材料的研究与应用进展. 工程塑料应用, 2011, 39(12):101-104.
[3] 陈平, 刘胜平. 环氧树脂. 北京:化学工业出版社, 1999. 215-217.
[4] 刘科科, 汪涛, 蔚永强,等. 高分子复合材料用导热填料研究进展. 塑料工业, 2013, 41(4):6-9.
[5] Nan C W, Birringer R, Clarke D R, et al. Effective thermal conductivity of particulate composites with interfacial thermal resistance. Journal of Applied Physics, 1997, 81(10):6692-6699.
[6] Agari Y, Uno T. Estimation on thermal conductivities of filled polymers. Journal of Applied Polymer Science, 2003, 32(7):5705-5712.
[7] 闫刚, 魏伯荣, 杨海涛, 等. 聚合物基复合材料导热模型及其研究进展. 玻璃钢/复合材料, 2006, (3):50-52.
[8] 丁峰, 谢维章. 导热树脂基复合材料. 复合材料学报, 1993, (3):19-24.
[9] 阳熵铖, 杨海, 陈福泉, 等. PP/AlN复合材料导热机理研究. 塑料科技, 2013, (4).
[10] Ramani K, Vaidyanathan A. Finite Element Analysis of Effective Thermal Conductivity of Filled Polymeric Composites. Journal of Composite Materials, 1995, 29(13):1725-1740.
[11] Kumlutas D, Tavman I H. A Numerical and Experimental Study on Thermal Conductivity of Particle Filled Polymer Composites. Journal of Thermoplastic Composite Materials, 2006, 19(4):441-455.
[12] 刘加奇, 张立群, 杨海波, 等. 粒子填充聚合物基复合材料导热性能的数值模拟. 复合材料学报, 2009, 26(1):36-42.
[13] 田志红, 范华乐, 张浩, 等. AlN填充有机灌封硅橡胶导热性能的数值模拟. 复合材料学报, 2011, 28(3).
[14] Jeulin D, Kanit T, Mounoury V, et al. Determination of The Size of The Representative Volume Element for Random Composites: Statistical And Numerical Approach. International Journal of Solids & Structures, 2003, 40(13):3647-3679.
[15] Annapragada S R, Sun D, Garimella S V. Prediction of effective thermo-mechanical properties of particulate composites. Computational Materials Science, 2007, 40(2):255-266.