Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts

In this study, epoxy putties with novel compositions were developed for the filling of structural voids in carbon-fiber-reinforced plastics (CFRPs), which are used to fabricate automotive parts. Two constituent solutions—one consisting of epoxy resins and the other consisting of a hardener—were form...

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Autores principales:	Manseok Yoon, Kwangsik Yoo, Bongkuk Seo, Seung Hwan Ko, Choong-Sun Lim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	composites putty epoxy unsaturated polyester resin Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/22b37a78cea94c8bb25484b7eb7fdac5
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spelling	oai:doaj.org-article:22b37a78cea94c8bb25484b7eb7fdac52021-11-11T17:59:40ZDevelopment of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts10.3390/ma142164191996-1944https://doaj.org/article/22b37a78cea94c8bb25484b7eb7fdac52021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6419https://doaj.org/toc/1996-1944In this study, epoxy putties with novel compositions were developed for the filling of structural voids in carbon-fiber-reinforced plastics (CFRPs), which are used to fabricate automotive parts. Two constituent solutions—one consisting of epoxy resins and the other consisting of a hardener—were formulated, mixed, and then coated on CFRP surfaces, followed by curing. The surfaces were then evaluated to determine the shrinkage rates (calculated based on the liquid densities and cured mixtures), adhesion properties (determined by a peel test), and color differences (measured with a colorimeter) of the synthesized putties. The last two properties were compared with those of the commercially available putties to ascertain the thermal resistance of the developed putties. The results indicated that the synthesized epoxy putties were more strongly adhesive and exhibited less difference in color. Furthermore, after thermal impact, both the adhesive properties and color stabilities of the synthesized epoxy putties were found to be superior to those of the commercial putty.Manseok YoonKwangsik YooBongkuk SeoSeung Hwan KoChoong-Sun LimMDPI AGarticlecompositesputtyepoxyunsaturated polyester resinTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6419, p 6419 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	composites putty epoxy unsaturated polyester resin Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	composites putty epoxy unsaturated polyester resin Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Manseok Yoon Kwangsik Yoo Bongkuk Seo Seung Hwan Ko Choong-Sun Lim Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts
description	In this study, epoxy putties with novel compositions were developed for the filling of structural voids in carbon-fiber-reinforced plastics (CFRPs), which are used to fabricate automotive parts. Two constituent solutions—one consisting of epoxy resins and the other consisting of a hardener—were formulated, mixed, and then coated on CFRP surfaces, followed by curing. The surfaces were then evaluated to determine the shrinkage rates (calculated based on the liquid densities and cured mixtures), adhesion properties (determined by a peel test), and color differences (measured with a colorimeter) of the synthesized putties. The last two properties were compared with those of the commercially available putties to ascertain the thermal resistance of the developed putties. The results indicated that the synthesized epoxy putties were more strongly adhesive and exhibited less difference in color. Furthermore, after thermal impact, both the adhesive properties and color stabilities of the synthesized epoxy putties were found to be superior to those of the commercial putty.
format	article
author	Manseok Yoon Kwangsik Yoo Bongkuk Seo Seung Hwan Ko Choong-Sun Lim
author_facet	Manseok Yoon Kwangsik Yoo Bongkuk Seo Seung Hwan Ko Choong-Sun Lim
author_sort	Manseok Yoon
title	Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts
title_short	Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts
title_full	Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts
title_fullStr	Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts
title_full_unstemmed	Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts
title_sort	development of low-shrink epoxy putty to solve appearance-quality defects of carbon-fiber-reinforced plastic automotive exterior parts
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/22b37a78cea94c8bb25484b7eb7fdac5
work_keys_str_mv	AT manseokyoon developmentoflowshrinkepoxyputtytosolveappearancequalitydefectsofcarbonfiberreinforcedplasticautomotiveexteriorparts AT kwangsikyoo developmentoflowshrinkepoxyputtytosolveappearancequalitydefectsofcarbonfiberreinforcedplasticautomotiveexteriorparts AT bongkukseo developmentoflowshrinkepoxyputtytosolveappearancequalitydefectsofcarbonfiberreinforcedplasticautomotiveexteriorparts AT seunghwanko developmentoflowshrinkepoxyputtytosolveappearancequalitydefectsofcarbonfiberreinforcedplasticautomotiveexteriorparts AT choongsunlim developmentoflowshrinkepoxyputtytosolveappearancequalitydefectsofcarbonfiberreinforcedplasticautomotiveexteriorparts
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Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts

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