Research on the Performance of Silicone Thermally Conductive Gaskets

Related Articles

Abstract

Silicone thermally conductive gaskets were prepared using two-component RTV-silicone rubber as the matrix, Al₂O₃ and Al(OH)₃ as the fillers. Thermal conductivity and mechanical properties of the gaskets were tested, and factors that affect the amount of oil bleeding were analyzed. The results showed that thermal conductivity and hardness of silicone rubber increased with fillers content increased, however oil bleeding decreased. When adding the same amount of fillers, the ratio of functional group r[r=n(Si-Vi)/n(Si-H)] value had great effect on the oil bleeding of silicone thermally conductive gaskets. The effects of four different r values on oil bleeding were investigated, and the amount of oil bleeding increased with r values increased. When r was 3.25, incomplete crosslinking phenomenon occurred. When r value was the same, the gaskets with high crosslink density had low amount of oil bleeding.

	Service

	Email this article
	Add to my bookshelf
	Add to citation manager
	Email Alert
	RSS
	Articles by authors
	Wang Yalong
	Feng Yakai
	Zhao Jingqi
	Shen Jingbo
	Feng Menghuang
	Shao Wenli

Keywords： RTV-silicone rubber； silicone thermally conductive gaskets； thermal conductivity； hardness； oil bleeding

Received 2014-04-30;

About author:

Cite this article:

Wang Yalong, Feng Yakai, Zhao Jingqi, Shen Jingbo, Feng Menghuang, Shao Wenli.Research on the Performance of Silicone Thermally Conductive Gaskets[J] Chemcial Industry and Engineering, 2016,V33(4): 74-78,84

[1] 冯圣玉, 张洁. 有机硅高分子及其应用[M]. 北京: 化工工业出版社, 2004 Feng Shengyu, Zhang Jie. Silicone polymer and application[M]. Beijing: Chemical Industry Press, 2004(in Chinese)
[2] 方沅蓉, 王景鹤. 导热硅橡胶的研究进展[J]. 有机硅材料, 2008, 22 (2): 100-104 Fang Yuanrong, Wang Jinghe. Advances in thermally conductive silicone rubber[J]. Silicone Rubber, 2008, 22 (2): 100-104(in Chinese)
[3] Chiu H, Liu Y, Lin C, et al. Thermal conductivity and electrical conductivity of silicone rubber filled with aluminum nitride and aluminum powder[J]. Journal of Polymer Engineering, 2013, 33(6): 545-549
[4] Delebecq E, Ganachaud F. Looking over liquid silicone rubbers: (1) Network topology vs. chemical formulations [J]. ACS Applied Materials & Interfaces, 2012, 4: 3 340-3 352
[5] 赵君红, 魏恒勇, 魏颖娜, 等. 非水解sol-gel法合成MgAl₂O₄纳米粉体[J]. 耐火材料, 2013, 46 (6): 421-423 Zhao Junhong, Wei Hengyong, Wei Yingna, et al. Preparation of MgAl₂O₄ nano-powders by non-hydrolytic sol-gel method[J]. China's Refractories, 2012, 46 (6): 421-423(in Chinese)
[6] 胡耿源, 孙家曾, 林泽琛, 等. 核磁共振波谱法测定含氢硅油, 含硅聚醚和羟基硅油[J]. 精细化工, 1991, 4: 45-48 Hu Gengyuan, Sun Jiazeng, Lin Zechen, et al. Determination of hydrogen silicone oil, silicon polyether and hydroxyl silicone by ¹H-NMR spectroscopy[J]. Fine Chemicals, 1991, 4: 45-48(in Chinese)
[7] Delebecq E, Ganachaud F. Looking over liquid silicone rubbers: (2) Mechanical properties vs. network topology [J]. ACS Applied Materials & Interfaces, 2012, 4: 3 353-3 363
[8] 彭娅. 纳米碳酸钙填充室温硫化硅橡胶性能及其补强机理的研究[D]. 成都:四川大学, 2004 Peng Ya. The properies and reinforcement of nano-calcium carbonate filled room temperature vulcanized silicone rubber[D]. Chengdu: Sichuan University, 2004(in Chinese)
[9] Dannenberg E M, Papirer E, Donnet J R. Effect of surface chemical surface chemical interaction on the properties of carbon black reinforced rubbers[J]. Rubber Chemistry and Technology, 1975, 48 (3): 410-444
[10] Agari Y, Uno T. Estimation on thermal conductivities of filled polymers[J]. Journal of Applied Polymer Science, 1986, 32(7): 5 705-5 712
[11] 何曼君. 高分子物理[M]. 修订版. 上海: 复旦大学出版社, 2000 He Manjun. Polymer physics[M]. Revision. Shanghai: Fudan University Press, 2002(in Chinese)
[12] 陈荣圻, 陈岚. 有机颜料表面改性及其助剂[J]. 印染助剂, 2001, 18 (3): 1-3 Chen Rongqi, Chen Feng. Surface modification of pigment dyes tuff and related agents[J]. Textile Auxiliaries, 2001, 18 (3): 1-3(in Chinese)