• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Preparation and properties of expandable epoxy foam prepreg for sandwich composites prepared via thermal expansion molding process
【24h】

Preparation and properties of expandable epoxy foam prepreg for sandwich composites prepared via thermal expansion molding process

机译：Preparation and properties of expandable epoxy foam prepreg for sandwich composites prepared via thermal expansion molding process

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Abstract Thermal expansion molding process (TEMP) is a new technology for integrated molding sandwich composites. However, the development of high‐performance expandable foam prepreg limits the scale applications of this technology. In this study, epoxy foam prepreg (M‐1) with expandable function was used to prepare foams with different expansion ratios via restricted foaming. Three suitable expansion ratios were determined to prepare foam sandwich composites by analyzing the density, bubble sizes, compressive strength, and expansion pressures of expandable foam. The maximum expansion pressure produced by four, six, and eight times of foam expansion were 251, 160, and 115 kPa, respectively. Tensile test and digital imaging computer technology confirmed that with the increase of foam expansion ratio, the strength decreased, but the plastic deformation ability increased. Failure modes such as foam matrix fracture, glass fiber mat fracture, and mutual‐slipping between the foam matrix and glass fiber mat occur during the stretching process. Finally, the PMI/M‐1 foam hybrid sandwich composites with three structures were prepared via the TEMP technology, which verified the feasibility of this technology in forming sandwich composites.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号