考虑频率、液体老化和分子链运动的聚合物自热现象分析研究

IF 2.6 4区化学 Q3 POLYMER SCIENCE

Journal of Polymer Research Pub Date : 2025-04-15 DOI:10.1007/s10965-025-04385-1

Quentin C. P. Bourgogne

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引用次数: 0

摘要

本文的目的是提出一个一维热力学模型，描述在聚合物和增强热塑性塑料的循环恳求中发生的自热现象引起的温度上升。所提出的模型在聚酰胺6.6 （PA6.6）的各种频率和吸水配置下进行了验证。这项工作表明，网络中水分子的存在并不能解释所研究年龄PA6.6的温度升高的唯一原因。通过模拟不可恢复的分子链网络重组和破坏，通常被称为水的“塑化”效应，提出了对这种加剧的温度上升的物理解释。

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Analytical investigation of self-heating phenomenon of polymers considering frequency, liquid ageing and molecular-chain motion

The aim of this paper is to present a 1D thermodynamic model describing the rise in temperature induced by self-heating phenomenon occurring in cyclic solicitations of polymers and reinforced thermoplastics. The proposed model was validated for a neat Polyamide 6.6 (PA6.6) for various frequencies and water absorption configurations. This work showed that the presence of water molecules in the network cannot be the only explanation for the observed rise in temperature of the studied aged PA6.6. A physical explanation of this exacerbated rise in temperature is then proposed by modelling the unrecoverable molecular-chain network reorganisation and damage, generally known as the “plasticising” effect of water.

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来源期刊

Journal of Polymer Research 化学-高分子科学

CiteScore

4.70

自引率

7.10%

发文量

472

审稿时长

3.6 months

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.