A novel microwave (MW) injector at 2.45 GHz for resin infiltration has been developed at the Institute for Pulsed Power and Microwave Technology (IHM), Research Center Karlsruhe (FZK), Germany. Resin injection is an essential step in the production of carbon fibre reinforced plastics (CFRP) for aerospace applications. A compact, low-cost and automated MW injector provides an efficient and safe energy transfer from the MW source to the resin and supports an appropriate electromagnetic field structure for homogeneous infiltration. The system provides temperature monitoring and an automatized MW power switching, which ensures a fast response of the MW system to rapid changes in the temperature for high flow rates of the resin. In low power measurements with a vector network analyzer, the geometry of the injector cavity has been adjusted to provide an efficient system. The MW injector has been tested for specific resin systems infiltrations.

中文翻译：

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用于先进复合材料生产的微波加热树脂注射器

德国卡尔斯鲁厄研究中心 (FZK) 的脉冲功率和微波技术研究所 (IHM) 开发了一种 2.45 GHz 的新型微波 (MW) 注射器，用于树脂渗透。树脂注射是生产用于航空航天应用的碳纤维增强塑料 (CFRP) 的重要步骤。紧凑、低成本和自动化的 MW 注射器提供了从 MW 源到树脂的高效和安全的能量传输，并支持适当的电磁场结构以实现均匀渗透。该系统提供温度监控和自动化 MW 功率切换，确保 MW 系统对树脂高流速的温度快速变化做出快速响应。在使用矢量网络分析仪进行低功率测量时，喷油器腔的几何形状已经过调整，以提供一个高效的系统。MW 进样器已针对特定的树脂系统渗透进行了测试。