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<p>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.</p>

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

  • 期刊论文

  • 发表日期：

    2025年4月15日

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  • Quentin C. P. Bourgogne

摘要

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.