Abstract

The area of local inelasticity in latex elastic polymers filled and unfilled with zinc oxide powder in comparison with metallic zinc was investigated by the method of internal friction. The studies were carried out in the wide temperature range of from –150 to 50°C of the method of freely damped torsional vibrations. In the spectra of the internal friction of polymers, several dissipative losses of different intensities were found located in different temperature ranges. A decrease in the intensity of the α-relaxation process during filling was found in both cases. At the same time, in the presence of zinc powder, an expansion of the glass transition temperature region was found due to positive temperatures, while there was a narrowing of this region due to the low-temperature region in the presence of zinc oxide. In addition to α-relaxation, another, less intense, β-relaxation process was discovered. When zinc oxide is introduced into the polymer, its intensity decreases. The temperature dependences of the frequency of the oscillatory process are obtained, on the basis of which the regions of inelasticity and their change during filling are established. A theoretical analysis of the effect of fillers on the physical and mechanical characteristics of relaxation processes is carried out. At subzero temperatures, several µ-relaxation processes were revealed, the intensities of which depend on the filler.

中文翻译：

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氧化锌对弹性聚合物物理机械性能的影响

摘要

通过内摩擦法研究了填充和未填充氧化锌粉末的乳胶弹性聚合物与金属锌相比的局部非弹性区域。这些研究是在自由阻尼扭转振动方法的 –150 至 50°C 的宽温度范围内进行的。在聚合物的内摩擦光谱中，在不同的温度范围内发现了几种不同强度的耗散损失。在两种情况下都发现填充过程中 α-弛豫过程的强度降低。同时，在锌粉存在下，由于正温度，玻璃化转变温度区域扩大，而在氧化锌存在下，由于低温区域，该区域变窄。除了α-弛豫，另一个不那么强烈的β-弛豫过程被发现。当将氧化锌引入聚合物中时，其强度降低。获得了振荡过程频率的温度依赖性，在此基础上建立了非弹性区域及其在填充过程中的变化。对填料对松弛过程的物理和机械特性的影响进行了理论分析。在零度以下的温度下，揭示了几个 μ-弛豫过程，其强度取决于填料。在此基础上建立了非弹性区域及其在填充过程中的变化。对填料对松弛过程的物理和机械特性的影响进行了理论分析。在零度以下的温度下，揭示了几个 μ-弛豫过程，其强度取决于填料。在此基础上建立了非弹性区域及其在填充过程中的变化。对填料对松弛过程的物理和机械特性的影响进行了理论分析。在零度以下的温度下，揭示了几个 μ-弛豫过程，其强度取决于填料。