拉伸应变对纵向弹性波在非晶聚合物中传播的影响

IF 1.4 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

JETP Letters Pub Date : 2025-05-06 DOI:10.1134/S0021364025605433

A. B. Volodarsky, E. S. Morokov, A. I. Kokshaysky, N. I. Odina, A. I. Korobov

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引用次数: 0

摘要

研究了非晶态聚合物聚丙烯腈-丁二烯-苯乙烯在不同拉伸应变下的弹性波传播特性。在卸荷后和直接加载下均进行了测量，从而可以评估线弹性变形区的声弹性效应。在非晶态聚合物向塑性变形区转变的附近，发现了弹性特性降低的局部微区产生的影响。结合实验数据和非晶聚合物的簇状结构模型，提出了在单轴张力下超分子结构重排的机理。

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Effect of the Tensile Strain on the Propagation of Longitudinal Elastic Waves in the Volume of an Amorphous Polymer

The features of propagation of elastic waves in samples of polyacrylonitrile butadiene styrene, which is an amorphous polymer, have been studied at different tensile strains. Measurements are carried out both after load removal and under direct loading, which makes it possible to evaluate the acoustoelastic effect in the linear elastic deformation region. The effect of generation of local microregions with reduced elastic characteristics has been detected near the transition of the amorphous polymer into a plastic deformation region. Involving experimental data and a cluster model of the structure of amorphous polymers, a mechanism for the rearrangement of the supramolecular structure under uniaxial tension has been proposed.

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.