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International Journal of Polymer Science
Volume 2012, Article ID 728235, 4 pages
Research Article

Preparation and Characterization of Liquid Crystalline Polyurethane/Al2O3/Epoxy Resin Composites for Electronic Packaging

1Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guilin University of Technology, Ministry of Education, Guilin 541004, China
2Institute of Chemistry and Material, Yulin Normal University, Yulin 537000, China

Received 25 August 2011; Accepted 21 September 2011

Academic Editor: Jan-Chan Huang

Copyright © 2012 Shaorong Lu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Liquid crystalline polyurethane (LCPU)/Al2O3/epoxy resin composites were prepared by using LCPU as modifier. The mechanical properties, thermal stability, and electrical properties of the LCPU/Al2O3/epoxy resin composites were investigated systematically. The thermal oxidation analysis indicated that LCPU/Al2O3/epoxy resin composites can sustain higher thermal decomposition temperature. Meanwhile, coefficient of thermal expansion (CTE) was also found to decrease with addition of LCPU and nano-Al2O3.