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方法的重要性:材料表征技术对液注塑模拟的影响

Maurício Azevedo¹, Silvester Bolka², Clemens Holzer³

¹Polymer Competence Center Leoben GmbH, 8700 Leoben, Austria.

|November 27, 2025

概括

准确的材料数据对于可靠的液体 (LSR) 注塑模拟至关重要. 这项研究强调了特定热容量和固化动力学特征化方法如何显著影响模拟准确性和周期时间预测.

科学领域:

材料科学材料科学材料科学
聚合物工程聚合物工程
计算建模计算建模

背景情况:

液体 (LSR) 的注射成型依赖于精确的计算机辅助工程 (CAE) 模拟来优化工艺.
模拟准确性直接取决于所使用的材料数据的质量和相关性.
现有的表征方法经常适应热塑性方法,而不完全解决LSR特定的局限性.

研究的目的:

系统地描述一个高度填充的注射成型等级LSR的热物理和运动性质.
批判性地评估不同材料表征技术对模拟准确性的影响.
建立一个方法框架,以提高LSR注塑模拟的可靠性.

主要方法:

使用调制差分扫描热量计 (DSC) 和蓝宝石法测量的特定热容量.
在整个加工温度范围内评估的导热率.
治疗动力学通过热量计和风湿学研究.

主要成果:

特定热容量显示温度依赖性,但在固化过程中没有变化;蓝宝石方法数据更好地反映了过程预测的内热效应.
导热率保持相对不变.
热量测量表明一种自催化治愈机制,而类风学表明一种第n阶模型.
粘度主要影响了注射压力;特定热容量和固化动力学显著影响了预测的固化配置文件和周期时间.

结论:

数据集的选择,特别是固化参数的选择,对于LSR注塑模拟的预测准确性至关重要.
该研究引入了一种有组织的,比较的方法来评估表征技术对模拟的影响.
这一框架可以指导未来的研究,并提高LSR和其他聚合物的过程模拟的可靠性.

关键词:

固化的动力学固化的动力学注塑成型是指注射成型的产品.液体制的是一种液体.处理模拟准确度处理模拟准确度具体的热量容量具体的热量容量特定体积量,特定体积量.导热率导热率导热率导热率导热率导热率

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