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Open AccessArticle

Cure Cycle Optimization of Rapidly Cured Out-Of-Autoclave Composites

School of Materials Science and Engineering, Beihang University, Beijing 100191, China
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Materials 2018, 11(3), 421; https://doi.org/10.3390/ma11030421
Received: 26 January 2018 / Revised: 3 March 2018 / Accepted: 9 March 2018 / Published: 13 March 2018
Out-of-autoclave prepreg typically needs a long cure cycle to guarantee good properties as the result of low processing pressure applied. It is essential to reduce the manufacturing time, achieve real cost reduction, and take full advantage of out-of-autoclave process. The focus of this paper is to reduce the cure cycle time and production cost while maintaining high laminate quality. A rapidly cured out-of-autoclave resin and relative prepreg were independently developed. To determine a suitable rapid cure procedure for the developed prepreg, the effect of heating rate, initial cure temperature, dwelling time, and post-cure time on the final laminate quality were evaluated and the factors were then optimized. As a result, a rapid cure procedure was determined. The results showed that the resin infiltration could be completed at the end of the initial cure stage and no obvious void could be seen in the laminate at this time. The laminate could achieve good internal quality using the optimized cure procedure. The mechanical test results showed that the laminates had a fiber volume fraction of 59–60% with a final glass transition temperature of 205 °C and excellent mechanical strength especially the flexural properties. View Full-Text
Keywords: out-of-autoclave; rapidly cure; porosity; microstructure; fracture surface out-of-autoclave; rapidly cure; porosity; microstructure; fracture surface
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MDPI and ACS Style

Dong, A.; Zhao, Y.; Zhao, X.; Yu, Q. Cure Cycle Optimization of Rapidly Cured Out-Of-Autoclave Composites. Materials 2018, 11, 421.

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