Teufl Daniel, Zaremba Swen
Technical University of Munich, Chair of Carbon Composites, Boltzmannstr. 15, 85748 Garching, Germany.
Materials (Basel). 2018 May 18;11(5):838. doi: 10.3390/ma11050838.
During the production of fiber-reinforced composite materials, liquid resin is introduced into the fiber material and cured, i.e., hardened. An elevated temperature is needed for this curing. Microwave curing of composites has been investigated for some time, but it has mostly been done using small domestic or laboratory equipment. However, no investigation has been carried out using an industrial-sized chamber-microwave for glass fiber-reinforced plastic (GFRP). Here, we show that microwave curing produces laminates of the same quality as oven-cured ones. The study shows that, if the process is done right, GFRP samples can be produced with an industrial scale microwave. Even if not fully cured, microwave samples show a glass transition temperature measured with DMA () that is comparable to the according to the proposed cure cycle on the data sheet. Specific microwave-cured configurations show better inter-laminar shear strength than oven specimens. The results show that microwave-based heat introduction can be a beneficial curing method for GFRP laminates. A microwave-optimized process is faster and leads to better mechanical properties.
在纤维增强复合材料的生产过程中，将液态树脂引入纤维材料并进行固化，即硬化。固化需要升高温度。复合材料的微波固化已经研究了一段时间，但大多是使用小型家用或实验室设备进行的。然而，尚未使用工业规模的腔式微波对玻璃纤维增强塑料（GFRP）进行研究。在此，我们表明微波固化产生的层压板质量与烘箱固化的层压板相同。研究表明，如果工艺正确，使用工业规模的微波可以生产GFRP样品。即使未完全固化，微波样品通过DMA测量的玻璃化转变温度与根据数据表上建议的固化周期测得的温度相当。特定的微波固化配置显示出比烘箱试样更好的层间剪切强度。结果表明，基于微波的热引入对于GFRP层压板可能是一种有益的固化方法。经过微波优化的工艺更快，并且导致更好的机械性能。
Zotero 插件
