The effect of moisture-induced swelling on the absorption capacity of transversely isotropic elastic polymer-matrix composites

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:46

Article

Derrien, K.¹  Gilormini, P.¹ 

[1] CNRS, Lab Ingn Mat Arts & Metiers ParisTech, F-75013 Paris, France

关键词: Fibre reinforced composite material;    Polymers;    Swelling;    Diffusion;   

DOI  :  10.1016/j.ijsolstr.2008.11.014

来源: Elsevier

【 摘 要 】

The interaction between humid air and transversely isotropic fiber-reinforced composites with swelling polymeric matrix is considered. A model is proposed for the water saturation level in a polymer when stresses are applied, that uses directly obtainable material parameters only. In a composite, the reinforcements modify the water uptake of the polymer matrix because of the internal stresses that are induced by its restricted swelling, and this effect is evaluated. As a consequence of the coupling between stresses and absorption capacity, the sorption isotherm of a composite is ruled by the (non-linear) Langmuir equation when the unreinforced matrix obeys the (linear) Henry's law. (C) 2008 Elsevier Ltd. All rights reserved.

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