期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 95, 期 -, 页码 267-273出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2017.01.019
关键词
Polymer-matrix composites (PMCs); Thermal properties; Compression moulding
资金
- National Natural Science Foundation of China [51403175]
- Foundation of Aeronautics Science Fund [2015ZF53074, 2016ZF03010]
- Seed Foundation of Innovation
- Northwestern Polytechnical University
- Undergraduate Innovation Program [201510699240, 201610699371]
Hybrid fillers of micrometer boron nitride/nanometer boron nitride (mBN/nBN) were employed to fabricate the highly thermally conductive insulating mBN/nBN/polyphenylene sulfide ((mBN/nBN)/PPS) composites via mechanical ball-milling followed by hot-compression method. The thermally conductive coefficient (lambda), dielectric constant (epsilon) & dielectric loss tangent (tan delta) values and thermal stabilities were all enhanced with the increasing addition of mBN/nBN hybrid fillers. The lambda value was improved from 0.286 W/mK for pristine PPS matrix to 2.638 W/mK for the (mBN/nBN)/PPS composite with 60 wt% mBN/nBN (mass fraction, 2:1) hybrid fillers. Appropriate addition of the mBN/nBN hybrid fillers played a role of heterogeneous nucleation for PPS matrix. Agari model fitting revealed that the mBN/nBN hybrid fillers could be much easier to form the continuous thermally conductive channels & networks. The corresponding epsilon and tan delta values still maintained relatively lower level of 3.96 and 0.022, respectively. And the corresponding THeat-resistance (index) (T-HRI) value was beyond 277.8 degrees C. (C) 2017 Elsevier Ltd. All rights reserved.
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