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用应力应变和动态力学方法,系统地表征了Ln-PIR的粘弹行为及其对聚合物链结构、分子量和分子量分布的依赖性,建立了有关力学量与分子量和分子量分布之间的相互作用规律的数学模式。结果表明,聚合物的粘弹力学量可以用有效分子量的概念来描述:
The viscoelastic behavior of Ln-PIR and its dependence on the polymer chain structure, molecular weight and molecular weight distribution were systematically characterized by means of stress-strain and dynamic mechanics. The interaction between mechanical quantities and molecular weight and molecular weight distribution was established Regular mathematical model. The results show that the viscoelasticity of polymers can be described by the concept of effective molecular weight: