A thermochemical and rheological model incorporating inhibition time for highly reactive polyester resins in liquid moulding processes

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-09-04 DOI:10.1016/j.coco.2025.102577

Leonardo Barcenas , Sidharth Sarojini Narayana , Lucie Riffard , Loleï Khoun , Pascal Hubert

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Abstract

This work presents the development of a comprehensive model to describe the cure kinetics and viscosity behaviour of polyester-based resin systems used in liquid composite moulding applications. The model accounts for both inhibition and diffusion effects, providing a unified equation that simplifies the complex integral expressions often required in sequential or piecewise approaches. Thermogravimetric analysis (TGA), Differential Scanning Calorimetry (DSC), and rheological characterization were performed to assess the thermal stability, curing behaviour, and viscosity changes over a range of isothermal temperatures. Time-temperature graphs generated by the model highlight critical regions for processing, including the processability window and the rapid crosslinking region. These insights are crucial for optimizing process parameters in the large-scale manufacturing of composite parts, particularly for complex geometries.

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一个热化学和流变模型，结合在液体成型过程中高活性聚酯树脂的抑制时间

这项工作提出了一个综合模型的发展，以描述在液体复合材料成型应用中使用的聚酯基树脂系统的固化动力学和粘度行为。该模型考虑了抑制效应和扩散效应，提供了一个统一的方程，简化了顺序或分段方法中经常需要的复杂积分表达式。通过热重分析（TGA）、差示扫描量热法（DSC）和流变学表征来评估在等温温度范围内的热稳定性、固化行为和粘度变化。该模型生成的时间-温度图突出了加工的关键区域，包括可加工性窗口和快速交联区域。这些见解对于优化复合材料零件的大规模制造过程参数至关重要，特别是对于复杂的几何形状。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.