在输液模拟中纳入非线性环氧树脂开发:双指数粘度模型方法
Mohammad W Tahir1, Umar Khan1, Jan-Peter Schümann2
1Department of Computer Science, Edge Hill University, Ormskirk L39 4QP, UK.
Polymers
|March 13, 2025
概括
环氧树脂的粘度在交联过程中发生变化,影响液体复合成型 (LCM) 输入. 这项研究模拟了这种温度依赖性,以优化输注温度,以有效填充模具.
科学领域:
- 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.
- 聚合物科学 聚合物科学
背景情况:
- 传统的液体复合成型 (LCM) 模拟假设树脂粘度是恒定的.
- 这种假设对于延长的输液过程往往是不准确的,因为它会影响固化环氧的机械性能.
- 环氧树脂粘度在交联过程中动态变化,受温度和反应动力学的影响.
研究的目的:
- 为了研究环氧树脂粘度在交联过程中的显著温度依赖.
- 开发一个准确的,非线性模型,用于环氧树脂粘度演变.
- 为了确定最佳的起始温度,以便在LCM中有效填充模具.
主要方法:
- 探讨环氧树脂的取决于温度的粘度.
- 基于交叉连接动力学的非线性粘度演变模型的开发.
- 在不同的温度配置文件下对粘度变化的实验验证.
- 将实验数据集成到高级输液建模中.
主要成果:
- 环氧树脂粘度表现出与温度和交联的复杂,非线性关系.
- 高温最初会降低粘度,但随着交叉链接的进展,粘度会增加.
- 拟议的模型准确地预测粘度变化,与经验数据保持一致.
- 确定了优化的输注温度,以提高模具填充效率.
结论:
- 在LCM模拟中假定粘度恒定是一个显著的过度简单化.
- 对温度依赖粘度的准确建模对于优化输注过程至关重要,特别是对于大型和复杂的部件.
- 该研究提出了一种基于实验见解的新型模具填充技术,以提高效率和减少浪费.
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