LIU Chaoa，b ， WEI Liqiaoa，b ， XU Bingshea，b
(a. College of Materials Science and Engineering; b. Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China)
Abstract: To analysis the effect of boron nitride nano-particles on photodegradation property of silicone by UV irradiation, boron nitride nano-particles were added in the silicone. FTIR, FESEM and thermal infrared imager were used to analyze and characterize the boron nitride -silicone composites materials. The results show that the Si—C group cracks and the surface heat transfer coefficient is reduced by ultraviolet aging in the polymethylsiloxane. In the composite materials, adding small amount of boron nitride particles are formed the “island” model to reduce the thermal performance. However, thermal conductivity of the composite materials increases dramatically after the photo aging.
Keywords: boron nitride nano-particles; polydimethylsiloxane; photodegradation; heat transfer coefficient
中图分类号：TQ324.2+ 1 文献标志码：A
文章编号：1008-5548（2014）01-0035-04
DOI:10.3969/j.issn.1008-5548.2014.01.008
收稿日期：2013-04-03，修回日期：2013-04-24，在线出版时间：2014-02-24。
第一作者简介：刘超(1986—)，男，硕士研究生，研究方向为发光二极管封装材料。 电话：18734901089，E-mail：cnliu1986@163.com。
通信作者简介：魏丽乔（1964—），女，教授，研究方向为功能高分子材料、复合高分子材料。 电话：13603583962， E-mail：weiliqiaoty@163.com。
