Electrical Anisotropy and its Mitigation in Conductive Polymers Printed by Digital Light Processing DOI Creative Commons

David Tilve-Martinez,

Wilfrid Néri, N. Vukadinovic

et al.

Published: Oct. 18, 2023

In most 3D printing technologies, objects are realized layer by layer. This layer-by-layer construction leads to inherent anisotropic physical properties. Controlling, understanding and sometimes mitigating such anisotropy is a critical issue in the development of printing. We demonstrate quantify this work electrical conductive materials processed so-called Digital Light Processing (DLP) method. method, which enjoys high resolution speed, layers polymers, successively cross-linked UV irradiation 2D patterns. Here, we use acrylate based resins carbon nanotube as fillers for their low percolation threshold that allows realizing still sufficiently transparent irradiation. Conductivity parallel printed found be much greater than conductivity perpendicular layers. explained contact resistance between High results from slow diffusion nanotubes uncured material towards interface cured object. implementing delay time before curing successive layers, or decreasing matrix viscosity with temperature, promote particles allow substantial reduction As result, can reduced almost two orders magnitude. control mitigation reconciliation DLP technology possibility realize uniform materials.

Language: Английский

Electrically/Magnetically Dual‐Driven Shape Memory Composites Fabricated by Multi‐Material Magnetic Field‐Assisted 4D Printing DOI

Pan Wu,

Tianyu Yu, Ming‐Jun Chen

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(27)

Published: March 4, 2024

Abstract Shape memory polymers (SMPs) are smart materials that enable to transform back their original shape from the deformed state when subjected external stimuli. They have shown great potential used as sensors and actuators in diverse applications. However, current research on SMPs primarily focuses utilization of a single source stimuli (e.g., electricity, magnetism, light, etc.), which heavily restricts complex circumstances. In this study, novel approach is developed fabricate multi‐layer electrically/magnetically dual‐driven composites (ML‐EMSMCs) based magnetic field‐assisted digital light processing (MF‐DLP) 4D printing technique. The fabricated ML‐EMSMCs contain alternating high electric conductive layers (up 5.37 × 10 −3 S cm −1 ) responsive (10.7 emu g ), enabling Joule heat‐based high‐frequency field induction‐based Furthermore, exhibited excellent behavior, good formability, properties. techniques allows for alignment particles with unidirectional field, significantly improving recovery speed. photocurable SMP shed development multiple functionalities.

Language: Английский

Citations

24
Additive manufacturing of carbon nanocomposites for structural applications DOI Creative Commons
Muhammed Hisham,

Muhammed Shebeeb C,

Dileep Chekkaramkodi

et al.

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 28, P. 4674 - 4693

Published: Jan. 1, 2024

Additive manufacturing (AM), also known as 3D printing, has attracted a lot of attention in science and technology recent years. Improvement AM processes materials are necessary, particularly for structural load-bearing components mechanical applications. The addition nano-fillers can potentially improve the properties additively manufactured components, making them suitable Carbon nanofillers like graphene carbon nanotubes special interest due to their exceptional properties. Several studies have already demonstrated use improving electrical printed facilitating electronic However, focusing on applications been limited, not widely known. This review seeks fill this gap by exploring effect thermal parts parameters print orientation, nanofiller method, dispersion explored. points out that there improvements addition, which makes more application.

Language: Английский

Citations

15
Exploring Conductive Filler‐Embedded Polymer Nanocomposite for Electrical Percolation via Electromagnetic Shielding‐Based Additive Manufacturing DOI

Nilam Qureshi,

Vivek Dhand, Shaik Subhani

et al.

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: unknown

Published: April 18, 2024

Abstract This review delves into the progress made in additive manufacturing through incorporation of conductive fillers nanocomposites. Emphasizing critical role percolation and conductivity, study highlights advancements material selection, particularly focusing on carbon nanotubes with low thresholds. The practical applications these nanocomposites polymer composites are explored, emphasizing understanding Furthermore, present paper investigates potential materials as lightweight alternatives for electromagnetic interference shielding (EMI), key sectors such automotive aerospace industries. integration advanced materials, modeling techniques, standardization is discussed pivotal successful implementation. Overall, underscores significant strides enhancing electrical properties capabilities strategic use filler manufacturing.

Language: Английский

Citations

11
Embedded 3D printing of RGO frameworks with mechanical strength, and electrical and electromagnetic interference shielding properties DOI
Yue Wang, Jialiang Luo, Yang Cao

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(16), P. 9747 - 9755

Published: Jan. 1, 2024

Micro-porous and micro-dense 3D RGO frameworks prepared by embedded printing are reported, the exhibit high electrical conductivity, mechanical strength, excellent electromagnetic interference shielding properties.

Language: Английский

Citations

8
From Unregulated Networks to Designed Microstructures: Introducing Heterogeneity at Different Length Scales in Photopolymers for Additive Manufacturing DOI Creative Commons
Mojtaba Ahmadi, Katharina Ehrmann, Thomas Koch

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 3978 - 4020

Published: March 28, 2024

Photopolymers have been optimized as protective and decorative coating materials for decades. However, with the rise of additive manufacturing technologies, vat photopolymerization has unlocked use photopolymers three-dimensional objects new material requirements. Thus, originally highly cross-linked, amorphous architecture cannot match expectations modern anymore, revealing largely unanswered question how diverse properties can be achieved in photopolymers. Herein, we review microstructural features soft matter should designed implemented to obtain high performance materials. We then translate these findings into chemical design suggestions enhanced printable Based on this analysis, found heterogenization most powerful tool tune photopolymer performance. By combining toolbox analytical characterization, examine current strategies physical (fillers, inkjet printing) (semicrystalline polymers, block copolymers, interpenetrating networks, induced phase separation) put them a scientific context develop roadmap improving diversifying photopolymers'

Language: Английский

Citations

8
Additive manufacturing of anisotropic graphene-based composites for thermal management applications DOI
Shani Ligati Schleifer, Oren Regev

Additive manufacturing, Journal Year: 2023, Volume and Issue: 70, P. 103567 - 103567

Published: April 23, 2023

Language: Английский

Citations

21
3D Printed Graphene and Graphene/Polymer Composites for Multifunctional Applications DOI Open Access
Ying Wu, Chao An,

Yaru Guo

et al.

Materials, Journal Year: 2023, Volume and Issue: 16(16), P. 5681 - 5681

Published: Aug. 18, 2023

Three-dimensional (3D) printing, alternatively known as additive manufacturing, is a transformative technology enabling precise, customized, and efficient manufacturing of components with complex structures. It revolutionizes traditional processes, allowing rapid prototyping, cost-effective production, intricate designs. The 3D printed graphene-based materials combine graphene’s exceptional properties manufacturing’s versatility, offering precise control over structures enhanced functionalities. To gain comprehensive insights into the development graphene graphene/polymer composites, this review delves their fabrication methods, unique structural attributes, multifaceted applications across various domains. Recent advances in printable materials, apparatus characteristics, typical printing techniques for composites are addressed, including extrusion methods (direct ink writing fused deposition modeling), photopolymerization strategies (stereolithography digital light processing) powder-based techniques. Multifunctional energy storage, physical sensor, stretchable conductor, electromagnetic interference shielding wave absorption, well bio-applications highlighted. Despite significant advancements its polymer innovative studies still necessary to fully unlock inherent capabilities.

Language: Английский

Citations

16
DLP 3D printing of electrically conductive hybrid hydrogels via polymerization-induced phase separation and subsequent in situ assembly of polypyrrole DOI

Chuhan Song,

Qian Zhao, Tao Xie

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(9), P. 5348 - 5356

Published: Jan. 1, 2024

A porous hydrogel was constructed through polymerization-induced phase separation and DLP 3D printing. After in situ formation of an interconnected polypyrrole network, the hybrid shows exceptional electrical conductivity 264 S m −1 .

Language: Английский

Citations

7
3D-Printable high-mixed-conductivity ionogel composites for soft multifunctional devices DOI Creative Commons
Sergey Nechausov, Aslan Miriyev

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 153759 - 153759

Published: July 5, 2024

Multifunctional components are pivotal for the physical intelligence of synthetic robots, mirroring multifaceted roles seen in natural organisms. Achieving such complexity is challenged by rigidity and intricate assembly required monofunctional parts difficulty designing materials that respond distinctly to multiple stimuli. A key challenge developing multifunctional devices co-evolve intrinsically multistimuli-responsive with their fabrication methods. In this context, mixed ionic-electronic conductivity (MIEC) stand out, as dual enables concurrent processing diverse signals. However, lack precise techniques has restricted full exploitation MIECs creating multimaterial, complex-shaped, hierarchically structured devices. We introduce high-conductivity soft ionogel/single-walled carbon nanotube (SWCNT) MIEC composites (ISMCs), 3D-printed high resolution using vat photopolymerization (VPP). These showcased pressure–temperature sensors capable detecting pressure thanks a SWCNT network sensing temperature broad range sensitivity owing ionic an liquid (IL). suggest electronic (1.82 mS/cm) (1.02 conductivities, combined precise, single-step VPP 3D-printing, lay groundwork versatile, wide applications.

Language: Английский

Citations

7
Fabrication and investigation of graphene‐loaded triiron tetraoxide/silicone‐rubber electromagnetic shielding composites based on static magnetic‐field–induced orientation DOI

Jiaxing Guo,

Qin Zhou,

Jikai Xie

et al.

Polymer Composites, Journal Year: 2024, Volume and Issue: 45(7), P. 6588 - 6605

Published: Feb. 15, 2024

Abstract Graphene‐loaded triiron tetraoxide/silicone‐rubber composites containing highly loaded graphene‐loaded Fe 3 O 4 (Fe @RGO) particles were fabricated using static magnetic field‐induced alignment. The @RGO characterized through Fourier transform infrared, x‐ray diffraction, SEM, and XPS analyses. Subsequently, the influence of added material strength field on alignment distribution filler examined a synergistic combination SEM Raman spectroscopy. electrical conductivity electromagnetic shielding properties assessed. increased with increasing addition, 25 wt% mixture had fastest curing rate maximum torque, continued increase in addition led to occurrence many defects. Concurrently, progressively enhances augmentation strength. synthesized at 180 mT exhibit most substantial alignment, facilitating establishment effective conductive pathways. This results notable enhancement effectiveness, approximately 400% greater than that pure silicone rubber around 40% higher non‐aligned composites. approach introduces novel concept for shaping structural design flexible materials. Highlights Highly was prepared by self‐assembly. continuous phase structure oriented Fully promotes formation reduced SER 13% SEA 67%.

Language: Английский

Citations

6