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http://dx.doi.org/10.14775/ksmpe.2020.19.12.087

Analysis of Mechanical Curing Properties Based on Vacuum Pressure of UV-Cured Composites  

Jang, Yong-Soo (Department of Carbon Convergence Engineering, JEONJU UNIV.)
Kim, Jeong-Keun (Department of Carbon Convergence Engineering, JEONJU UNIV.)
Go, Sun-Ho (JEONJU UNIV. Institute of Carbon Tech.)
Kim, Hong-Gun (Department of Carbon Convergence Engineering, JEONJU UNIV.)
Kwac, Lee-Ku (Department of Carbon Convergence Engineering, JEONJU UNIV.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.19, no.12, 2020 , pp. 87-97 More about this Journal
Abstract
In this study, a UV-cured GFRP molding is made using a combination of hand lay-up and resin transfer molding, and its properties are analyzed. The molded plates produced using various vacuum pressures (0 mmHg, -450 mmHg, and -760 mmHg) are examined via a comparison of hand lay-up molding and resin transfer molding. Tests are conducted by processing tensile specimens (ASTM D-5083), flexural test specimens (ASTM D-790), and ILSS test specimens (ASTM D-2344) according to each ASTM standard with a molded plate. Similarly, the UV-cured GFRP molding is compared against GFRP using epoxy. It was confirmed that the mechanical strengths of all the specimens increased when the vacuum pressure was increased and when UV curing was applied. This is believed to be because as the vacuum pressure increases, the pores of the cured specimen are removed, thereby reducing defects, and the bonding force between the glass fiber and the resin is stronger than that of the epoxy resin. It is expected that if resin transfer molding methods and UV-cured resins are used for molding GFRP composites in industry, products with better mechanical properties and faster curing time will be produced.
Keywords
Hand Lay-up; Resin Transfer Molding; Tensile Strength; Flexural Strength; ILSS;
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Times Cited By KSCI : 7  (Citation Analysis)
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