The Versatile Method to Control the Orientation of BN Particles in Thermoset Matrix  

作　　者：Karnthidapom Wattanakul Sittisak Satasit 

机构地区：[1]College of Industrial Technology, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand

出　　处：《Journal of Chemistry and Chemical Engineering》2012年第9期769-773,共5页化学与化工（英文版）

摘　　要：A new thermally conductive thermoset composite has been developed. A hybrid organic-inorganic material composed of an epoxy resin crosslinked with a flexible diamine hardener, and a BN, was prepared by incorporating epoxy structure units covalently into a BN via the sol-gel approach. The precursor was obtained by the reaction of DGEBA （diglycidyl ether of bisphenol A） with TEOS （tetraethyl orthosilicate）. The precursor was then hydrolyzed and co-condensated with tetraethyl orthosilicate which is covalently bond with the hydroxyl groups on the BN surface at room temperature to yield epoxy-BN hybrid sol-gel material. FTIR spectroscopy confirmed the formation of organic and inorganic network. The thermal conductivity as measured by thermal conductive analyzer showed an increase up to 0.4048 W/m.K, for a mixture containing 0.4 wt% of BN fillers in the epoxy matrix. Moreover, the optimum conditions for surface modification of BN particle were also investigated.

关 键 词：BN filled-epoxy composite particle orientation chemical modification of epoxy sol-gel method inorganic-organichybrid. 

分 类 号：TQ325[化学工程—合成树脂塑料工业] TQ174.756