期刊
CHINESE JOURNAL OF POLYMER SCIENCE
卷 40, 期 3, 页码 248-255出版社
SPRINGER
DOI: 10.1007/s10118-022-2673-9
关键词
Polymer-matrix composites (PMCs); Ti3C2Tx; 3D printing; Thermal conductivity; Electromagnetic interference (EMI)
资金
- National Natural Science Foundation of China [51773169, 51973173]
- Technical Basis Scientific Research Project (Highly Thermally Conductive Non-metal Materials)
- Guangdong Basic and Applied Basic Research Foundation [2019B1515120093]
- Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province of China [2019JC-11]
- Polymer Electromagnetic Functional Materials Innovation Team of Shaanxi Sanqin Scholars
This work presents a facile fabrication strategy for thermally conductive graphite nanosheets/poly(lactic acid) sheets with ordered GNPs via FDM 3D printing. Superior EMI SE and thermal conductivity were achieved by combining the o-GNPs/PLA with Ti3C2Tx films.
This work proposes a facile fabrication strategy for thermally conductive graphite nanosheets/poly(lactic acid) sheets with ordered GNPs (o-GNPs/PLA) via fused deposition modeling (FDM) 3D printing technology. Further combinations of o-GNPs/PLA with Ti3C2Tx films prepared by vacuum-assisted filtration were carried out by layer-by-layer stacking-hot pressing to be the thermally conductive Ti3C2Tx/(o-GNPs/PLA) composites with superior electromagnetic interference shielding effectiveness (EMI SE). When the content of GNPs was 18.60 wt% and 4 layers of Ti3C2Tx (6.98 wt%) films were embedded, the in-plane thermal conductivity coefficient (lambda(parallel to)) and EMI SE (EMI SE parallel to) values of the thermally conductive Ti3C2Tx/(o-GNPs/PLA) composites significantly increased to 3.44 W center dot m(-1)center dot K-1 and 65 dB (3.00 mm), increased by 1223.1% and 2066.7%, respectively, compared with lambda(parallel to) (0.26 W center dot m(-1)center dot K-1) and EMI SE parallel to (3 dB) of neat PLA matrix. This work offers a novel and easily route for designing and manufacturing highly thermally conductive polymer composites with superior EMI SE for broader application.
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