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Composite Materials with Adjustable Thermal Expansion for Electronic Applications

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Abstract

In this paper, we discuss a newly characterized compound, ZrW2Og, that has been introduced into the composite materials with an adjustable and low thermal expansion for electronic applications. Offering a negative coefficient of thermal expansion (CTE) of approximate -9×10-6/°C in a large temperature range, ZrW2Og was used as a particle filler in polymer-matrix composites. The paper presents two kinds of composites, that is, polyester and epoxy with various volume fractions of ZrW2Og. The CTEs of the polyester/ZrW2Og and epoxy/ZrW2Og composites have been proven adjustable in the ranges of 94 to 56×10-6 /°C and 54 to 18× 10-6 /°C, respectively, with ZrW2Og filler from 0 to 30 vol%. In addition, the analysis about the interfaces between the matrices and filler indicated that the interfaces may be beneficial to reduce the overall thermal expansion of the composites. The methods to further decrease composite CTEs are also discussed.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Florida International University, Miami, FL, 33174, USA

    J. D. Shi, Z. J. Pu & K.-H. Wu

  2. Department of Electric and Computer Engineering, Florida International University, Miami, FL, 33174, USA

    G. Larkins

Authors
  1. J. D. Shi
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  2. Z. J. Pu
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  3. K.-H. Wu
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  4. G. Larkins
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Shi, J.D., Pu, Z.J., Wu, KH. et al. Composite Materials with Adjustable Thermal Expansion for Electronic Applications. MRS Online Proceedings Library 445, 229–234 (1996). https://doi.org/10.1557/PROC-445-229

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  • DOI: https://doi.org/10.1557/PROC-445-229

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