Pultrusion is a rapid and cost-effective manufacturing technology for continuous fibre reinforced thermoplastic composite profiles. As the cross-sections of pultruded profiles grow to meet increasing performance requirements, manufacturing challenges concerning heat transfer are encountered. In this study, a two dimensional finite element model was used to simulate the heat transfer and fluid flow physics of the pultrusion process for increasing diameters from Ø 5 – Ø 40 mm. To facilitate the experimental validation, a novel batch-wise pultrusion concept is introduced in which the impregnation process is observed in-situ using a transparent die. The pultrusion studies, conducted on glass-fibre/amorphous polyethylene terephthalate (GF/PET) commingled yarns, show that- with proper design- pultrusion is able to deliver consistent, high quality (void content < 2%) profiles up to at least Ø 40 mm.

拉挤成型是一种用于连续纤维增强热塑性复合材料型材的快速且具有成本效益的制造技术。随着拉挤型材横截面的增长以满足日益增长的性能要求，与传热有关的制造挑战也随之而来。在这项研究中，二维有限元模型用于模拟拉挤工艺的传热和流体流动物理，以增加直径从 Ø 5 – Ø 40 mm。为了促进实验验证，引入了一种新的分批拉挤成型概念，其中使用透明模具原位观察浸渍过程。对玻璃纤维/无定形聚对苯二甲酸乙二醇酯 (GF/PET) 混纺纱进行的拉挤研究表明，通过适当的设计，拉挤能够提供一致的、