Preparation of Short Carbon Fiber/Polydimethylsiloxane Conductive Composites Based on Continuous Spatial‐Confining Network Assembly Technique

Li, Chenglin; Li, Nan; Jiang, Haohua; Zhang, Zechao; Liu, Ying; Wu, Daming; Zheng, Xiuting; Sun, Jingyao

doi:10.1002/adem.202301117

Cited by 3 publications

(1 citation statement)

References 47 publications

(43 reference statements)

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“…These properties allow it to play a pivotal role in aerospace, automotive manufacturing, sporting goods, construction, and the energy industry 6–8 . In addition, the CF‐reinforced rubber composites formed by laminating CF with a rubber matrix have greatly broadened the range of applications for CF, enabling it to perform well in fields such as anti‐static materials, 9 reinforcing tires, 10 electromagnetic interference shielding materials, 11 conductive products, 12 and high‐performance wear‐resistant materials 13 . However, despite the great application potential of CF‐reinforced rubber composites, they still face a number of challenges during practical application.…”

Section: Introductionmentioning

confidence: 99%

Improving interface performance between the fibers and rubber using metal cations synergistic polydopamine to modify carbon fibers

Zhao,

Chen,

Zhang

et al. 2024

Polymers for Advanced Techs

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CF‐PDA‐M hybrid fillers are prepared by three metal cations (M) assisting polydopamine (PDA) through Fe3+, Ni2+, and Al3+. The metal cations promote the polymerization of PDA on the fiber surface, shorten the modification time of the fibers, and ensure that the short‐cut carbon fibers (CF) do not agglomerate during water bath stirring while keeping the structure of the CF undamaged, which is a green and efficient method. After PDA modification, the roughness and surface activity of the fiber surface increase. Finally, CF‐PDA‐M is used as a filler and added to neoprene latex and natural latex, which are prepared into composites by wet blending, and the CF are characterized by different techniques. The results show that the hydroxyl and amino groups on the surface of CF‐PDA‐M increase the cross‐linking density of the composites, establish a good stress cross‐linking network, shorten the vulcanization time, effectively prevent the agglomeration phenomenon of the CF in the rubber, and improve the dispersion of the CF in the composite. After modification, the tensile strength and 300% constant tensile strength of CF‐PDA‐M increase by more than 10% and 30%, respectively, over CF composites, and the rolling resistance is reduced. This study provides a new and effective strategy for CF surface functionalization, which improves the processing efficiency and mechanical properties of rubber products and has a broad application prospect in the rubber industry.

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Section: Introductionmentioning

confidence: 99%

Improving interface performance between the fibers and rubber using metal cations synergistic polydopamine to modify carbon fibers

Zhao,

Chen,

Zhang

et al. 2024

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

Factor analysis on property enhancement of electrically/thermally conductive composites by continuous forced assembly

An,

Liu,

Wang

et al. 2024

Polymer Composites

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Currently, with the development of many important fields such as aerospace and automotive industries, polymer composites have become an indispensable part of these fields. As for preparation methods, common methods like hot pressing make composites difficult to achieve continuous production. This paper proposed the continuous forced assembly (CFA) and designed continuous production facility, which can achieve the continuous preparation of low filler content (30 wt%) composites with high electrical/thermal conductivity. Besides, we structurally designed roll pressing device and explored its effect on the machining process. Here, short cut carbon fiber (SCF) and solid silica gel (MVQ) are used as electrically/thermally conductive filler and polymer matrix respectively, and continuous preparation of functional composites is completed by CFA method. Compared to the thermal conductivity (1.186 W/(m·K)) of SCF/MVQ composites prepared with lower viscosity matrix (MVQ‐A), the thermal conductivity of composites prepared with high viscosity matrix (MVQ‐D) reached 2.230 W/(m·K). Meanwhile, the process is optimized to explore the effects of the “accordion folding” and “pre‐stretch” methods on the thermal conductivity of composites, the thermal conductivity is converted from in‐plane to vertical direction. In addition, under the same filler content, 2 wt% rGO is beneficial in enhancing the electrical/thermal conductivity of prepared composites. The electrical conductivity and thermal conductivity of SCF28/rGO2/MVQ composite reach 663 S/m and 2.82 W/(m·K), which is higher than that of the properties of SCF/MVQ composite with the same filler content. To sum up, CFA facilitates continuous production of composites, which can be used in thermal management materials (TMMs).Highlights Compared with the “pre‐stretch” method, the thermal conductivity of SCF/MVQ composites prepared by “accordion folding” has a significant improvement. The SCF/rGO/MVQ composites prepared by CFA method show superior thermal conductivity and electrical conductivity. Composites prepared by CFA method can realize the continuous preparation of functional materials.

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A carbon nanotube/graphene nanoplatelet pressure sensor prepared by combining 3D printing and freeze-drying method

An,

Chen,

Liu

et al. 2024

J Polym Res

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Preparation of Short Carbon Fiber/Polydimethylsiloxane Conductive Composites Based on Continuous Spatial‐Confining Network Assembly Technique

Cited by 3 publications

References 47 publications

Improving interface performance between the fibers and rubber using metal cations synergistic polydopamine to modify carbon fibers

Improving interface performance between the fibers and rubber using metal cations synergistic polydopamine to modify carbon fibers

Factor analysis on property enhancement of electrically/thermally conductive composites by continuous forced assembly

A carbon nanotube/graphene nanoplatelet pressure sensor prepared by combining 3D printing and freeze-drying method

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