TY - JOUR
T1 - Synergistic improvement of thermal conductivities of polyphenylene sulfide composites filled with boron nitride hybrid fillers
AU - Gu, Junwei
AU - Guo, Yongqiang
AU - Yang, Xutong
AU - Liang, Chaobo
AU - Geng, Wangchang
AU - Tang, Lin
AU - Li, Nan
AU - Zhang, Qiuyu
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/4/1
Y1 - 2017/4/1
N2 - 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 (λ), dielectric constant (ε) & dielectric loss tangent (tan δ) values and thermal stabilities were all enhanced with the increasing addition of mBN/nBN hybrid fillers. The λ 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 ε and tan δ values still maintained relatively lower level of 3.96 and 0.022, respectively. And the corresponding THeat-resistance index (THRI) value was beyond 277.8 °C.
AB - 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 (λ), dielectric constant (ε) & dielectric loss tangent (tan δ) values and thermal stabilities were all enhanced with the increasing addition of mBN/nBN hybrid fillers. The λ 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 ε and tan δ values still maintained relatively lower level of 3.96 and 0.022, respectively. And the corresponding THeat-resistance index (THRI) value was beyond 277.8 °C.
KW - A. Polymer-matrix composites (PMCs)
KW - B. Thermal properties
KW - D. Compression moulding
UR - https://www.scopus.com/pages/publications/85012247373
U2 - 10.1016/j.compositesa.2017.01.019
DO - 10.1016/j.compositesa.2017.01.019
M3 - 文章
AN - SCOPUS:85012247373
SN - 1359-835X
VL - 95
SP - 267
EP - 273
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
ER -