Materials Reports  2020, Vol. 34 Issue (Z2): 576-579 |
| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| A Kind of Fast-curing Epoxy Resin Prepreg and Its Performance |
| LIU Kejian, GAO Yulong
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| CRRC Qingdao Sifang CO.,LTD., Qingdao 266111, China |
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Abstract Fast curing technique is one of the main directions for low-cost composites. The key to improve material properties is choosing curing process properly. The curing and rheological properties of the fast-curing resin system (AGMP3620) were studied by the method of diffe-rential scanning calorimetry (DSC) and cone plate rheometer. The results show that the resin has good stability at 60 ℃,which not only meets the requirements of room temperature storage and hot melt prepreg processing, but also can realize the rapid curing time of 20 min at 120 ℃ or 10 min at 150 ℃. According to the test results of processing condition properties, three curing procedures are determined: 90 ℃@1.5 h, 120 ℃@20 min and 150 ℃@10 min. The mechanical properties and dynamic thermo-mechanical properties of the cured composites through different procedures are tested. Comprehensive analysis shows that the cured composites at 120 ℃ for 20 min have the best mechanical properties, lays a foundation for engineering selection and application.
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Published: 08 January 2021
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| Fund:This work was financially supported by the Strategic International Scientific and Technological Innovation Cooperation (2018YFE0201300). |
| About author:: Kejian Liu, graduated from Nanjing University of Science and Technology, and received his master's degree in July 2009, then he joined CNR responsible for the design and development of wind power composite products. In August 2015, he worked in developed prepregand composite parts in ACC(Beijing) Science and Technology Co., Ltd. in March 2019, he joined CRRC Qingdao Sifang CO.,LTD., and working on the developing light vehicle. |
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