Ceramic/Polymeric Hybrids with Reduced Coefficients of Thermal Expansion


ISSN 1121-7588
Chenggang Chen1,2, Kevin H. Hoos1,3, Ming Y. Chen1
1Air Force Research Laboratory, Materials & Manufacturing Directorate, Wright-Patterson AFB OH 45433-7750
2University of Dayton Research Institute, 300 College Park, Dayton, OH 45469-0060
3Southwestern Ohio Council for Higher Education
 

Abstract

The mismatch of the coefficient of the thermal expansion (CTE) is one of the main causes of crack initiation and delamination for carbon fiber-reinforced polymer hybrids and metal/polymer hybrid materials. In this research, a negative CTE ceramic material (zirconium tungstate) was incorporated with a thermoset polymer (bismaleimide) resulting in a ~40% reduction in CTE and a significant improvement in thermal stability. The morphology showed good dispersion of the zirconium tungstate particles within the bismaleimide. Comparisons of the experimental CTE values with the rule-of-mixture and the analytical micromechanical models will be discussed.
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