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Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part

Carbon fiber-reinforced plastic (CFRP) has the advantages of being light weight, high strength, and corrosion resistant. At present, it is widely used in the lightweight design of automobile parts. The manufacturing of lightweight parts inevitably involves the connection between CFRP and the polymer...

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Autores principales: Xu, Bin, Wei, Meng-Yang, Wu, Xiao-Yu, Fu, Lian-Yu, Luo, Feng, Lei, Jian-Guo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622543/
https://www.ncbi.nlm.nih.gov/pubmed/34833337
http://dx.doi.org/10.3390/polym13224039
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author Xu, Bin
Wei, Meng-Yang
Wu, Xiao-Yu
Fu, Lian-Yu
Luo, Feng
Lei, Jian-Guo
author_facet Xu, Bin
Wei, Meng-Yang
Wu, Xiao-Yu
Fu, Lian-Yu
Luo, Feng
Lei, Jian-Guo
author_sort Xu, Bin
collection PubMed
description Carbon fiber-reinforced plastic (CFRP) has the advantages of being light weight, high strength, and corrosion resistant. At present, it is widely used in the lightweight design of automobile parts. The manufacturing of lightweight parts inevitably involves the connection between CFRP and the polymer material. The connection strength between CFRP and the polymer material significantly affects the service life of the composite parts. Taking CFRP and polyamide 6 (PA6) injection-molded composite parts as an example, this paper proposed a technological method to enhance the connection strength between CFRP and PA6. The proposed method was to fabricate micro-groove structures on the CFRP surface by compression molding. These micro-groove structures effectively increased the injection-molding area of the composite parts, thus enhancing the connection strength between CFRP and PA6. This paper presented a detailed study on the compression-molding process of micro-grooves on the CFRP surface, and successfully obtained the appropriate parameters. Finally, PA6 was used for injection molding on the CFRP with micro-grooves at an injection pressure of 8 MPa, an injection temperature of 240 °C, a holding pressure of 5 MPa, and a holding time of 2.5 s. The experimental results show that the micro-groove array structures on the CFRP surface could effectively improve the tensile strength of the connection interface in the composite parts. Compared with the composite part without micro-grooves, the tensile strength of the composite part with micro-grooves was increased by 80.93%. The composite parts prepared in this paper are mainly used in automobile interiors and the research results of this paper meet the actual needs of the enterprise.
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spelling pubmed-86225432021-11-27 Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part Xu, Bin Wei, Meng-Yang Wu, Xiao-Yu Fu, Lian-Yu Luo, Feng Lei, Jian-Guo Polymers (Basel) Article Carbon fiber-reinforced plastic (CFRP) has the advantages of being light weight, high strength, and corrosion resistant. At present, it is widely used in the lightweight design of automobile parts. The manufacturing of lightweight parts inevitably involves the connection between CFRP and the polymer material. The connection strength between CFRP and the polymer material significantly affects the service life of the composite parts. Taking CFRP and polyamide 6 (PA6) injection-molded composite parts as an example, this paper proposed a technological method to enhance the connection strength between CFRP and PA6. The proposed method was to fabricate micro-groove structures on the CFRP surface by compression molding. These micro-groove structures effectively increased the injection-molding area of the composite parts, thus enhancing the connection strength between CFRP and PA6. This paper presented a detailed study on the compression-molding process of micro-grooves on the CFRP surface, and successfully obtained the appropriate parameters. Finally, PA6 was used for injection molding on the CFRP with micro-grooves at an injection pressure of 8 MPa, an injection temperature of 240 °C, a holding pressure of 5 MPa, and a holding time of 2.5 s. The experimental results show that the micro-groove array structures on the CFRP surface could effectively improve the tensile strength of the connection interface in the composite parts. Compared with the composite part without micro-grooves, the tensile strength of the composite part with micro-grooves was increased by 80.93%. The composite parts prepared in this paper are mainly used in automobile interiors and the research results of this paper meet the actual needs of the enterprise. MDPI 2021-11-22 /pmc/articles/PMC8622543/ /pubmed/34833337 http://dx.doi.org/10.3390/polym13224039 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xu, Bin
Wei, Meng-Yang
Wu, Xiao-Yu
Fu, Lian-Yu
Luo, Feng
Lei, Jian-Guo
Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part
title Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part
title_full Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part
title_fullStr Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part
title_full_unstemmed Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part
title_short Fabrication of Micro-Groove on the Surface of CFRP to Enhance the Connection Strength of Composite Part
title_sort fabrication of micro-groove on the surface of cfrp to enhance the connection strength of composite part
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622543/
https://www.ncbi.nlm.nih.gov/pubmed/34833337
http://dx.doi.org/10.3390/polym13224039
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