TY - JOUR
T1 - Facile fabrication of lightweight porous FDM-printed polyethylene/graphene nanocomposites with enhanced interfacial strength for electromagnetic interference shielding
AU - Jing, Jingjing
AU - Xiong, Yu
AU - Shi, Shaohong
AU - Pei, Haoran
AU - Chen, Yinghong
AU - Lambin, Philippe
N1 - Funding Information:
This work is financially supported by the National Key R&D Program of China ( 2017YFE0111500 ), the National Natural Science Foundation of China ( 51933007 and 51721091 ), the International Science & Technology Innovation Cooperation Project of Sichuan Province ( 2021YFH0088 ), the European Union's H2020-MSCA-RISE-734164 Graphene 3D Project, the Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) ( sklpme2020-2-01 ), and the Program of Innovative Research Team for Young Scientists of Sichuan Province ( 2016TD0010 ).
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/5/3
Y1 - 2021/5/3
N2 - In order to shield the massive electromagnetic perturbations and meet the more and more stringent requirement for advanced electronic equipment, development of diverse, lightweight and high-performance electromagnetic interference (EMI) shielding materials is urgent but still challenging. Herein, the facile and green method which combines fused deposition modeling (FDM) 3D printing, ball milling and microwave (MW) irradiation tech nology was proposed to fabricate exfoliated graphene nanoplatelets (GNPs) incorporated liner low density polyethylene (LLDPE) nanocomposite lightweight parts with porous and complex geometry structure. FDM 3D printing possesses high flexibility for structure design, which can significantly broaden the application of ma terials in various fields. Benefiting from design of a unique porous lamellar structure, the printed LLDPE/GNPs nanocomposite parts can achieve a prominent EMI shielding effectiveness (SE) of ~32.4 dB (with thickness- normalized specific EMI SE (SSE/t) of 318 dB cm2/g) in the range of 8.2–12.4 GHz. This remarkable charac teristic is due to internal multiple reflections and absorption of electromagnetic (EM) waves. In addition, the specific FDM 3D-printed porous parts prepared by our strategy exhibit a relatively higher EMI SE at a lower density than those lightweight EMI shields in literatures. The use of MW irradiation technology improves me chanical properties, especially for the interfacial bonding strength between filaments. More importantly, this strategy is highly favorable for the fabrication of lightweight porous EMI shields with tailorable and optimized shape/structure, which could be expected to be applied in aerospace fields, portable electronic devices, smart devices and so on.
AB - In order to shield the massive electromagnetic perturbations and meet the more and more stringent requirement for advanced electronic equipment, development of diverse, lightweight and high-performance electromagnetic interference (EMI) shielding materials is urgent but still challenging. Herein, the facile and green method which combines fused deposition modeling (FDM) 3D printing, ball milling and microwave (MW) irradiation tech nology was proposed to fabricate exfoliated graphene nanoplatelets (GNPs) incorporated liner low density polyethylene (LLDPE) nanocomposite lightweight parts with porous and complex geometry structure. FDM 3D printing possesses high flexibility for structure design, which can significantly broaden the application of ma terials in various fields. Benefiting from design of a unique porous lamellar structure, the printed LLDPE/GNPs nanocomposite parts can achieve a prominent EMI shielding effectiveness (SE) of ~32.4 dB (with thickness- normalized specific EMI SE (SSE/t) of 318 dB cm2/g) in the range of 8.2–12.4 GHz. This remarkable charac teristic is due to internal multiple reflections and absorption of electromagnetic (EM) waves. In addition, the specific FDM 3D-printed porous parts prepared by our strategy exhibit a relatively higher EMI SE at a lower density than those lightweight EMI shields in literatures. The use of MW irradiation technology improves me chanical properties, especially for the interfacial bonding strength between filaments. More importantly, this strategy is highly favorable for the fabrication of lightweight porous EMI shields with tailorable and optimized shape/structure, which could be expected to be applied in aerospace fields, portable electronic devices, smart devices and so on.
KW - EMI shielding
KW - Fused deposition modeling
KW - Graphene nanoplatelets
KW - Microwave irradiation
KW - Porous structure
KW - 3D printing
UR - http://www.scopus.com/inward/record.url?scp=85101401013&partnerID=8YFLogxK
U2 - 10.1016/j.compscitech.2021.108732
DO - 10.1016/j.compscitech.2021.108732
M3 - Article
SN - 0266-3538
VL - 207
JO - Composites Science and Technology
JF - Composites Science and Technology
M1 - 108732
ER -