关键词: 2.5D织物, 辊压浸渍, 工艺研究, 复合材料

Abstract: This article focuses on the roller impregnation method and studied the influence of five process parameters on the quality of impregnated fabrics and the physical and mechanical properties of composite materials through the design of a five factor and three level orthogonal experiment. The research results indicate that the number of cycles in the impregnation process has the greatest impact on the resin content, followed by the resin preheating temperature. Rolling impregnation is suitable for low resin preheating temperature (30 ℃) and multiple rolling cycles (≥5 cycles) to ensure that the prepreg fabric has a high resin content, resulting in ideal resin content, density, and thickness of the composite material. The size of the mesh has a significant impact on the uniformity of fabric impregnation. A smaller mesh size (0.8 mm) is more conducive to uniform rolling impregnation, and the resulting composite material has higher mechanical properties.

Key words: 2.5D fabric, roller impregnation, process research, composites