Thermally Conductive Poly(lactic acid) Composites with Superior Electromagnetic Shielding Performances via 3D Printing Technology

作     者：Teng-Bo Ma Hao Ma Kun-Peng Ruan Xue-Tao Shi Hua Qiu Sheng-Yuan Gao Jun-Wei Gu Teng-Bo Ma;Hao Ma;Kun-Peng Ruan;Xue-Tao Shi;Hua Qiu;Sheng-Yuan Gao;Jun-Wei Gu

作者机构：Shaanxi Key Laboratory of Macromolecular Science and TechnologySchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China School of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2022年第40卷第3期

页      面：248-255,I0006页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 080201[工学-机械制造及其自动化] 0702[理学-物理学] 

基　　金：financial support from the National Natural Science Foundation of China (Nos. 51773169 and 51973173) Technical Basis Scientific Research Project (Highly Thermally Conductive Non-metal Materials) Guangdong Basic and Applied Basic Research Foundation (No. 2019B1515120093) Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province of China (No. 2019JC-11) financially supported by Polymer Electromagnetic Functional Materials Innovation Team of Shaanxi Sanqin Scholars。 

主　　题：Polymer-matrix composites(PMCs) Ti_(3)C_(2)T_(x) 3D printing Thermal conductivity Electromagnetic interference(EMI) 

摘      要：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) 3 D printing technology.Further combinations of o-GNPs/PLA with Ti_(3) C_(2) T_(x) films prepared by vacuum-assisted filtration were carried out by layer-by-layer stacking-hot pressing to be the thermally conductive Ti_(3) C_(2) T_(x)/(oGNPs/PLA) composites with superior electromagnetic interference shielding effectiveness(EMI SE).When the content of GNPs was 18.60 wt%and 4 layers of Ti_(3) C_(2) T_(x)(6.98 wt%) films were embedded,the in-plane thermal conductivity coefficient(λ_(Ⅱ)) and EMI SE(EMI SE_(Ⅱ)) values of the thermally conductive Ti_(3) C_(2) T_(x)/(o-GNPs/P LA) composites significantly increa sed to 3.44 W·m^(-1)·K^(-1) and 65 d B(3.00 mm),increased by 1223.1% and2066.7%,respectively,compared with λ_(Ⅱ)(0.26 W·m^(-1)·K^(-1)) and EMI SE_(Ⅱ)(3 d B) 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.