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http://dx.doi.org/10.7234/composres.2021.34.5.269

Multi-stage Compression Molding Technology of Fast Curing CF/Epoxy Prepreg  

Kwak, Seong-Hun (Gyeongbuk Hybrid Technology Institute)
Mun, Ji-Hun (Gyeongbuk Hybrid Technology Institute)
Hong, Sang-Hwui (Gyeongbuk Hybrid Technology Institute)
Kwon, Soon-Deok (Gyeongbuk Hybrid Technology Institute)
Kim, Byung-Ha (KCA)
Kim, Tae-Yong (KCA (Korea Composites Application Co.))
Publication Information
Composites Research / v.34, no.5, 2021 , pp. 269-276 More about this Journal
Abstract
PCM (Prepreg Compression Molding) process is a high-speed molding technology that can manufacture high-quality CFRP (Carbon Fiber Reinforced Plastic) parts. Compared to the autoclave process, it generates less waste and can significantly reduce cycle time, so various studies are being conducted in the aerospace and automobile industries. In this study, in order to improve the quality of the PCM process, a molding method was developed to increase the compression pressure of the press step by step according to the curing behavior of the prepreg. It was confirmed that this multi-stage compression molding technology is a good means to produce high-quality CFRP products and shorten cycle times. And, the laminated prepreg at room temperature was immediately put into the mold and preheated and molded at the same time, so that it could be molded without a separate preheating process. In addition, as a result of applying the same process conditions optimized for flat plate molding to three-dimensional shapes, a product similar to a flat plate in appearance could be made without the process of establishing process conditions.
Keywords
Prepreg compression molding; Out of autoclave; Fiber volume fraction; Void;
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