3D printing of epoxy⁃based composites with high strength and electromagnetic interference shielding ability

doi:10.19491/j.issn.1001-9278.2024.09.005

Abstract

Abstract:

A dual⁃material 3D printing technique is developed to rationally construct nano⁃silica/carbon black/epoxy （SiO₂/CB/EP） composites through alternately arranging nano⁃silica/epoxy （SiO₂/EP） composites with high strength and carbon black/epoxy （CB/EP） composites with high conductivity. According to the rheological properties， the epoxy composites with 11.6 wt.% SiO₂ and 10 wt.% CB exhibits excellent printability. A stable diameter of 400 μm was achieved through controlling the extrusion pressure and printing speed. The SiO₂/CB/EP composites show an excellent manufacturing accuracy and a highly ordered 3D structure as verified by the optical and micro⁃CT images. The tensile， compressive and bending strengths of the SiO₂/CB/EP composites were 35 MPa， 64 MPa and 120 MPa， respectively， indicating that there is no attenuation compared to those of the SiO₂/EP composites. Moreover， the electromagnetic interference shielding effectiveness of the composites is as high as 25 dB on the basis of the microwave absorbing mechanism.

Key words: epoxy, composite, three?dimensional printing, electromagnetic interference shielding, mechanical property

CLC Number:

TQ323.5

QU Daopeng, ZHANG Tao, HUA Chenxi, SONG Xinyu, CHENG Changli, LIU Yu, WANG Zhenyu. 3D printing of epoxy⁃based composites with high strength and electromagnetic interference shielding ability[J]. China Plastics, 2024, 38(9): 24-29.

Figures/Tables 12

References 24

1	Periyasamy A P， Venkataraman M， Militky J. Effect of sol–gel treatment on physical， chemical and mechanical stability of copper⁃coated conductive fabrics： focus on EMI shielding effectiveness［J］. Journal of Materials Science， 2022， 57（44）： 20 780⁃20 793.
2	Zou K， Sun H， Li X， et al. Extreme environment⁃bearable polyimide film with a three⁃dimensional Ag microfiber conductive network for ultrahigh electromagnetic interference shielding［J］. Science China Materials， 2023， 66（4）： 1 578⁃1 586.
3	陈晖，孙玲胜，钱伟栋，等.选择性激光烧结聚醚砜树脂/碳纤维/炭黑复合材料的性能研究［J］.中国塑料，2023，37（09）：14⁃18.DOI：10.19491/j.issn.1001-9278.2023.09.003 .
	CHEN H， SUN L S， QIAN W D， et al. Study on properties of PES/CF/CB composites through selective laser sintering［J］. China Plastics， 2023，37（09）：14⁃18.DOI：10.19491/j.issn.1001-9278.2023.09.003 .
4	Wang L， Li X， Qian Y， et al. MXene‐Layered Double Hydroxide Reinforced Epoxy Nanocomposite with Enhanced Electromagnetic Wave Absorption， Thermal Conductivity， and Flame Retardancy in Electronic Packaging［J］. Small， 2023： 2304311.
5	Han L， Li K， Xiao C， et al. Carbon nanotube⁃vertical edge rich graphene hybrid sponge as multifunctional reinforcements for high performance epoxy composites［J］. Carbon， 2023， 201： 871⁃880.
6	YE X， HU Z， LI X， et al. Non⁃Isothermal Crystallization Kinetics of Polyether⁃Ether⁃Ketone Nanocomposites and Analysis of the Mechanical and Electrical Conductivity Performance［J］. Polymers， 2022， 14（21）.
7	ORABY H， TANTAWY H R， CORREA⁃DUARTE M A， et al. Tuning Electro⁃Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe₃O₄Hybrid Nanocomposites［J］. Nanomaterials， 2022， 12（16）.
8	ZHOU S， ZHANG G， NIE Z， et al. Recent advances in 3D printed structures for electromagnetic wave absorbing and shielding［J］. Materials Chemistry Frontiers， 2022， 6（13）：1 736⁃1 751.
9	DU Q， LI C， LIU C， et al. Skeleton designable SGP/EA resin composites with integrated thermal conductivity， electromagnetic interference shielding， and mechanical performances［J］. Composites Science and Technology， 2022， 229.
10	HONG S Y， SUN Y， LEE J， et al. 3D printing of free⁃standing Ti₃C₂T_x/PEO architecture for electromagnetic interference shielding［J］. Polymer， 2021， 236.
11	LV Q， PENG Z， MENG Y， et al. Three⁃Dimensional Printing to Fabricate Graphene⁃Modified Polyolefin Elastomer Flexible Composites with Tailorable Porous Structures for Electromagnetic Interference Shielding and Thermal Management Application［J］. Industrial & Engineering Chemistry Research， 2022， 61（45）：16 733⁃16 746.
12	WU T， HUAN X， ZHANG H， et al. The orientation and inhomogeneous distribution of carbon nanofibers and distinctive internal structure in polymer composites induced by 3D⁃printing enabling electromagnetic shielding regulation［J］. Journal of Colloid and Interface Science， 2023， 638：392⁃402.
13	Pei X， Zhao M， Li R， et al. Porous network carbon nanotubes/chitosan 3D printed composites based on ball milling for electromagnetic shielding［J］. Composites Part A： Applied Science and Manufacturing， 2021， 145： 106363.
14	Xu J， Zhang X， Liu Y， et al. Selective coaxial ink 3D printing for single⁃pass fabrication of smart elastomeric foam with embedded stretchable sensor［J］. Additive Manufacturing， 2020， 36： 101487.
15	朱彦博，杜淼，陆超华，等.3D打印TPU软材料工艺参数对层间粘接的影响［J］.高分子学报，2018（04）：532⁃540.
	ZHU Y B， DU M， LU C H， et al. Influence of 3D printing parameters on the lnterlayer bonding strength for TPU soft materials［J］. Acta Polymerica Sinica， 2018，（04）：532⁃540.
16	张行乐，仰钧毅，程昌利，等.基于直写成型的环氧复合材料网格结构制备及其增强增韧机制［J］.复合材料学报，2023，40（10）：5 621⁃5 629.DOI：10.13801/j.cnki.fhclxb.20230104.002 .
	ZHANG X L， YANG J Y， CHENG C L， et al. Direct ink writing of epoxy⁃based composite lattice and its strengthening and toughening mechanisms［J］. Acta Materiae Compositae Sinica， 2023，40（10）：5 621⁃5 629.DOI：10.13801/j.cnki.fhclxb.20230104.002 .
17	李西敏，杨韬，彭必友等.二氧化钛陶瓷浆料的制备及其直写成型3D打印［J］.复合材料学报，2022，39（07）：3 510⁃3 517.DOI：10.13801/j.cnki.fhclxb.20210817.001 .
	LI X M， YANG T， PENG B Y， et al. Preparation of titanium dioxide ceramic slurry and its 3D printing for direct⁃ink⁃writing［J］. Acta Materiae Compositae Sinica，2022，39（07）：3 510⁃3 517.DOI：10.13801/j.cnki.fhclx-b.20210817.001
18	Gebrekrstos A， Orasugh J T， Muzata T S， et al. Cellulose‐Based Sustainable Composites： A Review of Systems for Applications in EMI Shielding and Sensors［J］. Macromolecular Materials and Engineering， 2022， 307（9）： 2200185.
19	Zhao B， Hamidinejad M， Wang S， et al. Advances in electromagnetic shielding properties of composite foams［J］. Journal of Materials Chemistry A， 2021， 9（14）： 8 896⁃8 949.
20	Wang M， Tang X H， Cai J H， et al. Construction， mechanism and prospective of conductive polymer composites with multiple interfaces for electromagnetic interference shielding： A review［J］. Carbon， 2021， 177： 377⁃402.
21	Huang J， Zhao X， Wu Y， et al. Facile green path to interconnected nano⁃graphite networks to overtake graphene as conductive fillers［J］. Carbon， 2021， 173： 667⁃675.
22	Jia L J， Phule A D， Geng Y， et al. Microcellular Conductive Carbon Black or Graphene/PVDF Composite Foam with 3D Conductive Channel： A Promising Lightweight， Heat‐Insulating， and EMI‐Shielding Material［J］. Macromolecular Materials and Engineering， 2021， 306（4）： 2000759.
23	汪恒，冯舒玥，胡峻豪等. Ti_（3）C_（2）T_（x）基复合电磁屏蔽材料的结构设计与性能研究进展［J/OL］.［2024⁃01⁃21］.复合材料学报， 1⁃17..
24	Wang Z， Zhang X， Cheng C， et al. 3D printed epoxy composite microsandwich with high strength， toughness， and EMI shielding performances［J］. Composite Structures， 2023， 323： 117456.

水平	因素
水平	打印速度（A）/mm·s^-1	打印气压（B）/kPa	打印层数（C）
1	8	300	1
2	9	320	2
3	10	340	3

水平	因素
水平	打印速度（A）/mm·s^-1	打印气压（B）/kPa	打印层数（C）
1	8	300	1
2	9	320	2
3	10	340	3

水平	因素
水平	打印速度（A）/mm·s^-1	打印气压（B）/kPa	打印层数（C）
1	9	200	1
2	10	220	2
3	11	240	3

水平	因素
水平	打印速度（A）/mm·s^-1	打印气压（B）/kPa	打印层数（C）
1	9	200	1
2	10	220	2
3	11	240	3

试验号	打印速度（A）/mm·s^-1	打印气压（B）/kPa	打印层数（C）	SiO₂/EP线宽/µm	CB/EP线宽/µm
1	1	1	1	369.84	310.11
2	1	2	2	471.97	420.94
3	1	3	3	574.03	561.18
4	2	1	2	318.96	293.45
5	2	2	3	401.78	408.30
6	2	3	1	510.17	520.03
7	3	1	3	408.15	270.89
8	3	2	1	567.52	401.27
9	3	3	2	631.41	484.34