乙丙橡胶在不同工质中热循环稳定性的研究

IF 0.58 Q4 Materials Science

Polymer Science, Series D Pub Date : 2025-05-22 DOI:10.1134/S1995421224702186

M. L. Davydova, N. V. Shadrinov, A. F. Fedorova, A. R. Khaldeeva, M. D. Sokolova

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引用次数: 0

摘要

研究了在-50 ~ +50℃的温度范围内，在空气和DOT-4制动液介质中进行热循环时，丙烯基SKEPT-40和skept -50橡胶的性能变化。结果表明，基于skept -40的橡胶试样具有较高程度的强度特征保留，而基于skept -50的橡胶试样具有较高程度的硬度和相对延伸率保留。由于在DOT-4介质中具有良好的稳定性和塑化作用，乙烯-丙烯橡胶在DOT-4介质中的抗冻性能比暴露在空气介质中要好得多。确定了超高分子量聚乙烯（UHMWP）对稳定乙丙橡胶的物理力学性能和抗冻性能的贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Studying the Stability of Ethylene—Propylene Rubbers under Thermocycling in Different Working Media

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Studying the Stability of Ethylene—Propylene Rubbers under Thermocycling in Different Working Media

The change in the properties of ethylene–propylene SKEPT-40- and SKEPT-50-based rubbers under thermocycling in air and a medium of DOT-4 brake fluid within a temperature range from –50 to +50°C has been studied. It has been shown that SKEPT-40-based rubber specimens have a higher degree of retaining the strength characteristics, whereas SKEPT-50-based specimens have a higher degree of retaining the hardness and relative elongation. The frost resistance of ethylene–propylene rubbers in DOT-4 medium is much better preserved as compare to exposure in the air medium due to their good stability in this medium and its plasticizing effect. The contribution of ultra-high-molecular-weight polyethylene (UHMWP) to the stabilization of both the physicomechanical properties and frost resistance of ethylene–propylene rubbers has been established.

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来源期刊

Polymer Science, Series D Materials Science-Polymers and Plastics

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Polymer Science, Series D publishes useful description of engineering developments that are related to the preparation and application of glues, compounds, sealing materials, and binding agents, articles on the adhesion theory, prediction of the strength of adhesive joints, methods for the control of their properties, synthesis, and methods of structural modeling of glued joints and constructions, original articles with new scientific results, analytical reviews of the modern state in the field.