新的测试方法用于测量充满热固体在不安全的测试条件下的时间固化叠加位移因子
Sukrut Prashant Phansalkar1, Bongtae Han1
1Department of Mechanical Engineering, University of Maryland, College Park, MD USA.
Journal of materials science
|February 17, 2026
概括
这项研究引入了一种新的方法,用于测量在同稳定条件下的时间固化叠加 (TCS) 移位因子,从而提高聚合物固化分析的准确性. 这些发现验证了时间固化叠加理论及其对部分固化的材料的应用.
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
- 类风病学 类风病学 类风病学
背景情况:
- 时间固化叠加 (TCS) 理论已经很成熟,但实际应用受到非异稳定测试条件的阻碍.
- 目前用于确定TCS转移因子的现有方法往往产生与理论预测不一致的结果.
研究的目的:
- 开发和验证一种新的方法来测量在异常条件下的TCS转移因子.
- 解决现有技术的局限性,提高TCS分析的准确性.
- 为了确认部分固化聚合物的时间固化叠加和时间温度叠加的有效性.
主要方法:
- 优化了一种新的测试程序,以确保在测量过程中可以忽略的额外固化.
- 该方法应用于以环氧基成型化合物,在各种部分固化状态 (p=0.6-0.9) 获得主曲线.
- 规范化主曲线与完全固化的参考相对移动,以确定TCS移位因子.
主要成果:
- 拟议的同固化方法产生了准确的TCS转移因子,显示了整个固化范围内的主曲线的卓越重叠.
- 结果提供了强有力的证据,支持时间治愈叠加原理的有效性.
- 时间-温度叠加对部分固化的标本的适用性也得到了确认.
结论:
- 新的isoocure方法有效地克服了测量TCS转移因子的先前技术的局限性.
- 该研究验证了时间固化叠加理论,并证明了它对部分固化的聚合物系统的适用性.
- 这项研究提供了一个更可靠的方法来描述聚合物在固化过程中的粘弹性行为.
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