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基于加工条件的不和聚树脂系统的治愈模型的开发

Abdallah Barakat¹, Marc Al Ghazal¹, Romeo Sephyrin Fono Tamo¹

¹Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996, USA.

|September 14, 2024

概括

差分扫描热量计 (DSC) 揭示了不和聚树脂 (UPR) 的固化方式. 较高的温度最初会增加固化率,但会降低最大度的固化程度,影响复合材料加工.

科学领域:

聚合物科学聚合物科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

不和聚树脂 (UPR) 在运输,海洋和基础设施复合材料中至关重要.
优化UPR配方需要了解它们的处理行为.
差分扫描热量计 (DSC) 是评估树脂固化动力学的关键技术.

研究的目的:

研究UPRs的非同热和同热固化行为.
使用DSC数据在各种加工条件下模拟UPR固化.
为了确定温度对治愈率和治愈程度的影响.

主要方法:

在不同加热/冷却速度下,从0°C到250°C进行非异热DSC测试.
从0°C到170°C进行的异热DSC测试.
用于模拟治愈动力学和预测治愈程度的自催化模型.

主要成果:

随着温度从10°C上升到170°C,治愈率下降,而反应热量增加.
在85°C时,最大的模拟治愈度 (α) 达到71.25%.
在5°C时,最大的固化度 (α) 低于12%,原因是交叉连接的热能不足.

结论:

DSC为优化UPR处理和配方提供关键数据.
温度显著影响UPR固化动力学,影响最终的材料性能.
基于DSC数据的模拟能够在不同的制造场景下预测治行为.

关键词:

美国国家安全委员会 DSC.自催化模型是自催化模型.治疗行为治疗行为.治愈运动的动力学治愈模拟的治疗方法不和聚树脂不和聚树脂

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