一种快速制作栅格天线的新型解决方案

A New Solution to Fast Fabrication of Grid Antennas

文中以一种树脂基碳纤维复合材料栅格天线反射面的制作成型为研究对象,详细阐述了该反射面成型后脱模模具工装的设计及成型方案。该栅格反射面所使用的主要材料为东丽公司的T700,基体为3234树脂体系。通过对复合材料模具的设计制作及使用、复杂复合材料制品二次脱模等方面的研究,提出了用球墨铸铁及碳纤维复合材料制造模具、采用真空袋热压罐成型工艺的新型解决方案。结果表明:与传统金属模具相比,在较大温差下复合材料模具具有尺寸精度更稳定、制作更简便、重量更轻等优势;利用复合材料过渡模具实现栅格反射面二次脱模可以大大提高生产效率。该方法对此类栅格反射面的制作具有指导意义。

The design and molding scheme of the demoulding tool after fabrication of the reflector are elaborated in this paper, taking fabrication of a kind of resin based carbon fiber composite grid antenna reflector as the research object. The main material used for the grid reflecting surface is Toray T700 and the matrix is 3234 resin system. By studying the design, production and use of composite material molds, the secondary demolding of complex composite products, etc., a new solution to making molds with ductile cast iron and carbon fiber composite materials and adopting vacuum bag autoclave molding technology is put forward. The results show that compared with the traditional metal mold, the composite mold has more stable dimensional accuracy, is simpler to make and lighter under the bigger temperature difference;that the secondary demoulding of grid reflecting surface is realized by using composite material transition die can greatly improve the production efficiency. This method is instructive to fabrication of this kind of grid reflector.