A general model was developed to predict the temperature-dependent modulus and yield strength of different thermoplastic polymers. This model, which depends on only two parameters with clear and specific physical meanings, can describe the temperature-dependent modulus and yield strength of thermoplastic polymers over the full glass transition region. The temperature-dependent modulus and yield strength of three thermoplastic polymers were measured by uniaxial tension tests over a temperature range of 243–383 K. The predictions showed excellent agreement with the experimental data. Sensitivity analysis of model input parameters showed negligible effect on the present general model. The universality of the present general model was further validated, showing excellent agreement with published experimental data on other thermoplastic polymers and their composites.

中文翻译：

---

热塑性聚合物随温度变化的模量和屈服强度的通用模型

建立了一个通用模型来预测不同热塑性聚合物的温度依赖性模量和屈服强度。该模型仅取决于两个具有明确和特定物理意义的参数，可以描述整个玻璃化转变区域中热塑性聚合物的温度依赖性模量和屈服强度。通过单轴拉伸试验在243–383 K的温度范围内测量了三种热塑性聚合物的温度依赖性模量和屈服强度。这些预测表明与实验数据极为吻合。对模型输入参数的敏感性分析显示，对本通用模型的影响可忽略不计。本通用模型的通用性得到了进一步验证，