TY - JOUR
T1 - Simultaneous improvement of thermal conductivities and electromagnetic interference shielding performances in polystyrene composites via constructing interconnection oriented networks based on electrospinning technology
AU - Guo, Yongqiang
AU - Pan, Lulu
AU - Yang, Xutong
AU - Ruan, Kunpeng
AU - Han, Yixin
AU - Kong, Jie
AU - Gu, Junwei
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/9
Y1 - 2019/9
N2 - Polymer composites with dual functions of thermal conductivity and electromagnetic interference (EMI) shielding are hardly reported. Herein, we fabricated polystyrene (PS) based composites containing interconnection oriented graphite nanoplatelets (GNPs) by the combining method of electrospinning, cold-pressing followed by hot-pressing. In-plane thermal conductivity (λ=) and total SE (SET) of the oriented GNPs/PS composites with 35 wt% GNPs reached 4.72 W/mK and 33 dB, about 24 and 11 times higher than that of λ= (0.20 W/mK) and SET (3 dB) of pure PS matrix, and also higher than that of λ= (3.05 W/mK) and SET (16 dB) of the random 35 wt% GNPs/PS composites. However, the cross-plane λ (λ⊥) value for oriented GNPs/PS composites was slightly enhanced from 0.20 W/mK to 0.32 W/mK. This work provides a simple and effective method to construct continuously thermally/electrically conductive networks, and the obtained GNPs/PS composites have great application potential in the electronic fields.
AB - Polymer composites with dual functions of thermal conductivity and electromagnetic interference (EMI) shielding are hardly reported. Herein, we fabricated polystyrene (PS) based composites containing interconnection oriented graphite nanoplatelets (GNPs) by the combining method of electrospinning, cold-pressing followed by hot-pressing. In-plane thermal conductivity (λ=) and total SE (SET) of the oriented GNPs/PS composites with 35 wt% GNPs reached 4.72 W/mK and 33 dB, about 24 and 11 times higher than that of λ= (0.20 W/mK) and SET (3 dB) of pure PS matrix, and also higher than that of λ= (3.05 W/mK) and SET (16 dB) of the random 35 wt% GNPs/PS composites. However, the cross-plane λ (λ⊥) value for oriented GNPs/PS composites was slightly enhanced from 0.20 W/mK to 0.32 W/mK. This work provides a simple and effective method to construct continuously thermally/electrically conductive networks, and the obtained GNPs/PS composites have great application potential in the electronic fields.
KW - A. Polymer-matrix composites (PMCs)
KW - B. Thermal properties
KW - C. Electrospinning
KW - D. Compression moulding
UR - https://www.scopus.com/pages/publications/85067231457
U2 - 10.1016/j.compositesa.2019.105484
DO - 10.1016/j.compositesa.2019.105484
M3 - 文章
AN - SCOPUS:85067231457
SN - 1359-835X
VL - 124
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 105484
ER -