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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| Veröffentlicht in: | Materials 2021-10, Vol.14 (21), p.6419 |
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| creator | Yoon, Manseok Yoo, Kwangsik Seo, Bongkuk Ko, Seung Hwan Lim, Choong-Sun |
| 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. |
| doi_str_mv | 10.3390/ma14216419 |
| format | Article |
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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.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma14216419</identifier><identifier>PMID: 34771945</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Automotive parts ; Bisphenol A ; Carbon fiber reinforced plastics ; Carbon fibers ; Carbon-epoxy composites ; Color ; Composite materials ; Curing ; Epoxy resins ; Fiber reinforced polymers ; Fourier transforms ; Heat resistance ; Mechanical properties ; Peel tests ; Protective coatings ; Synthesis ; Thermal resistance</subject><ispartof>Materials, 2021-10, Vol.14 (21), p.6419</ispartof><rights>2021 by the authors. 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/). 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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.</description><subject>Automotive parts</subject><subject>Bisphenol A</subject><subject>Carbon fiber reinforced plastics</subject><subject>Carbon fibers</subject><subject>Carbon-epoxy composites</subject><subject>Color</subject><subject>Composite materials</subject><subject>Curing</subject><subject>Epoxy resins</subject><subject>Fiber reinforced polymers</subject><subject>Fourier transforms</subject><subject>Heat resistance</subject><subject>Mechanical properties</subject><subject>Peel tests</subject><subject>Protective coatings</subject><subject>Synthesis</subject><subject>Thermal resistance</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkd1u1DAQhS0EolXpDU9giRuEFIg9thPfIK22W0BaiYXCdWQ7E-qSxMF2tt0X4LnJqhV_czMjnW-O5mgIec7K1wC6fDMYJjhTgulH5JRprQqmhXj813xCzlO6KZcCYDXXT8kJiKpaJHlKfl7gHvswDThmGjq6DbfF1XX043e6mcLdge7mnA80B3oV-j3S1TShiWZ0WHyaTe8X7QI7dDkdt9cm2jAWl95iLD6jH7sQHbZ015uUvaOrOYchZL8Ybe4yRh8i3ZmY0zPypDN9wvOHfka-Xm6-rN8X24_vPqxX28JBDbmAUlYCtDbQ1rXlunK8NUKV3ABYq6vOtZVS4KxyoEBaDgxk11kpdclYW8EZeXvvO812wNYtqaPpmyn6wcRDE4xv_lVGf918C_umlrXk6mjw8sEghh8zptwMPjnsezNimFPDpa6ElkywBX3xH3oT5jgu8Y6UKqVkXC3Uq3vKxZBSxO73Maxsjh9u_nwYfgGZCZhL</recordid><startdate>20211026</startdate><enddate>20211026</enddate><creator>Yoon, Manseok</creator><creator>Yoo, Kwangsik</creator><creator>Seo, Bongkuk</creator><creator>Ko, Seung Hwan</creator><creator>Lim, Choong-Sun</creator><general>MDPI AG</general><general>MDPI</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-7477-0820</orcidid></search><sort><creationdate>20211026</creationdate><title>Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts</title><author>Yoon, Manseok ; 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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. 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| source | PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Automotive parts Bisphenol A Carbon fiber reinforced plastics Carbon fibers Carbon-epoxy composites Color Composite materials Curing Epoxy resins Fiber reinforced polymers Fourier transforms Heat resistance Mechanical properties Peel tests Protective coatings Synthesis Thermal resistance |
| title | Development of Low-Shrink Epoxy Putty to Solve Appearance-Quality Defects of Carbon-Fiber-Reinforced Plastic Automotive Exterior Parts |
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