工艺与制造英文2024
拉挤成型与树脂传递模塑工艺对比
Pultrusion vs RTM
摘要整理
拉挤成型和树脂传递模塑（RTM）是生产复合材料的两种广泛应用的制造工艺。拉挤成型通过连续拉动纤维增强材料通过树脂浸渍槽和加热模具，适合生产截面均匀的长条形制品，具有生产效率高、纤维含量可控、产品性能稳定等优势。RTM工艺则通过将干纤维预制体放入闭合模具中，注入液态树脂并固化，适合生产形状复杂、壁厚变化大的制品，具有设计灵活性强、表面质量好、纤维利用率高等特点。两种工艺各有优劣：拉挤成型生产周期短、成本低、适合大批量生产，但产品形状受限；RTM工艺能实现复杂几何结构，但生产周期相对较长、成本较高。本文由Exel Composites公司技术与研发副总裁Kim Sjödahl撰写，系统分析了拉挤成型的主要优势，并与RTM工艺进行了全面对比，为复合材料制造商选择合适的生产工艺提供了参考依据。
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