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首页> 外文期刊>American Journal of Chemical Engineering >Generalization of the Temperature Dependence of Some Physical Properties of High-strength Polyethylene (HDPE) Using the Method of Given Parameters
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Generalization of the Temperature Dependence of Some Physical Properties of High-strength Polyethylene (HDPE) Using the Method of Given Parameters

机译：使用给定参数方法推广高强度聚乙烯（HDPE）某些物理性能的温度依赖性

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In this paper, based on the study of HDPE by dilatometric and rheological methods in a wide range of temperatures and cooling and deformation rates, we generalized the temperature dependence of the physical properties of polyethylene using the specified parameters method. Test specimens (cylinder size: height 12 mm, diameter 9.3 mm) were obtained both in the dilatometer’s test cylinder itself and in a specially designed injection mold using injection molding on a TP-125 injection molding machineThe temperatures in the experiments were added and maintained with an accuracy of 3.2.°C. Defined by The dependence of ρ_0 T_0 / ρT (relative reduced density of the polymer) on the reduced temperature (T - T0). Test specimens (cylinder size: height 12 mm, diameter 9.3 mm) were obtained both in the dilatometer’s test cylinder itself and in a specially designed injection mold using injection molding on a TP-125 injection molding machine. It was found that a reliable characteristic of the dilatometric properties of the crystallizing polymer, physically correctly and completely reflecting the features of the crystalline structure, can be obtained only in the mode of stepwise temperature changes, when at each given temperature the equilibrium value of the specific sample of the primer is fixedThus, the practical value of the dilatometric method for studying crystallizing polymers is shown, especially when comparing the results of dilatometry with the results of rheological studies.
机译：在本文中，基于在宽范围的温度，冷却和变形速率下通过膨胀和流变学方法对HDPE进行的研究，我们使用指定参数方法概括了聚乙烯物理性能的温度依赖性。在膨胀计的测试气缸本身和在TP-125注塑机上使用注塑成型的特殊设计的注塑模具中，均获得了试样（圆柱体尺寸：高度12 mm，直径9.3 mm），并在精度为3.2°C。定义为ρ_0T_0 /ρT（聚合物的相对降低的密度）对降低的温度（T-T0）的依赖性。在膨胀计的测试筒本身和在TP-125注塑机上使用注塑成型的特殊设计的注塑模具中，均获得了试样（圆柱体尺寸：高度12 mm，直径9.3 mm）。发现在物理上正确且完全反映晶体结构特征的结晶聚合物的膨胀特性的可靠特性，只有在逐步改变温度的方式下，当在每个给定温度下，聚合物的平衡值时，才能获得。这样就固定了底漆的特定样品，从而显示了膨胀法研究结晶聚合物的实用价值，特别是将膨胀法的结果与流变学研究的结果进行比较时。

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