Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 22, No. 2 (August 2009) 205-210   

downloaded Downloaded: 183   viewed Viewed: 2428

  MOISTURE DIFFUSION PROPERTIES OF FABRIC COMPOSITE (GLASS FIBER/EPOXY RESIN)
 
 
A. Naceri

Laboratory of Materials, Faculty of Sciences and Engineering, University of M’sila
P.O. Box 166, M’Sila, Algeria
abdelghani_naceri@yahoo.fr
 
 
( Received: February 29, 2008 – Accepted in Revised Form: December 11, 2008 )
 
 

Abstract    In this study, the effect of hygrothermal conditioning on the moisture diffusion properties of the fabric composite (glass fiber/epoxy resin) was investigated. The water uptake of the specimens conditioned in humid environment at different relative humidities (0, 60 and 96 % r.h) at constant temperature (60°C) was evaluated by weight gain measurements. The moisture diffusion properties of the fabric composite (glass fiber/epoxy resin) were determined using standard weight gain method. The weight gain experiments were performed to determine the equilibrium moisture content Mm of the fabric composite as a function of relative humidity (r.h). The measured weight gain is then fit to the solution to the diffusion equation (Fick’s law) to determine the diffusivity D. The comparison carried out between the values obtained of the characteristic parameters (D and Mm) of the kinetics of water absorption by the hygrothermal test of conditioning carried out into the laboratory and those given by Loos and Springer confirms the following principal remarks clearly: the diffusion coefficient D and the maximum weight gain Mm depend not only on the nature of material but also of the environmental conditions (hygrothermal conditioning). The maximum concentration of water (matrix+interface) obtained from calculations based on measured values, where a homogeneous diffusion phenomenon is assumed inside the material (Df=0), shows clearly that the presence of fibers in a polymeric matrix reduces the water up-take of the matrix by about 4 times.

 

Keywords    Moisture Diffusion Properties, Hygrothermal Conditioning, Fabric Composite Materials

 

References   

1. Abdel-Magid, B., Ziaee, S., Gass, K. and Schneider, M., “The Combined Effects of Load, Moisture and Temperature on the Properties of E-glass/Epoxy Composites, Composite Structures, Vol. 71, (2005), 320-326.

2. Bonniau, T. and Bunsel, A.R., “A Comparative Study of Water Absorption Theory Applied to Glass-Epoxy Composition”, Journal of Composite Materials, Vol. 15, (1981), 272-285.

3. Verpoest, I. and Springer, G.S., “Moisture Absorption Characteristics of Aramid Epoxy Composites”, Journal of Reinforced Plastics and Composites, Vol. 17, (1988), 21-32.

4. Avena, A. and Bunsel, A.R., “Effect of Hydrostatic Pressure on the Water Absorption of Glass Fiber-Reinforced Epoxy Resin”, Composites, Vol. 19, (1988), 355-357.

5. Aveston, J., Kelly, A. and Sillwood, J.M., “Long Term Strength of Glass Reinforced Plastics in Wet Environments”, Journal of Materials Science, Vol. 17, (1982), 3491-3498.

6. Bian, X.S., Ambrosio, L., Kenny, J.M., Nicolais, L. and Dibenedetto, A.T., “Effect of Water Absorption on the Behavior of E-Glass Fiber/Nylon-6 Composites”, Polymer Composites, Vol. 12, (2004), 333-337.

7. Colombini, D., Martinez-Vega, J.J. and Merle, G., “Influence of Hygrothermal Ageing and Thermal Treaments on the Viscoelastic Behaviour of DGEBA-MCDEA Epoxy Resin”, Polymer, (2002), 1983-1992.

8. Chateauminois, A., Chabert, B., Soulier, J.P. and Vincent, L., “Hygrothermal Ageing Effects on the Static Fatigue of Glass/Epoxy Composites”, Composites, Vol. 7, (1998), 547-555.

9. Zchang, Y.C. and Wang, X., “Hygrothermal Effects on Interfacial Stress Transfer Characteristics of Carbon Nanotubes-Reinforced Composites System”, Journal of Reinforced Plastics and Composites, Vol. 25, (2006), 71-88.

10. Loos, A.C. and Springer, G.S., “Enviromental Effects of Composites Materials, Technomic Publishing Company, Westport, (1981), 34-49.

11. Castaing, P. and Lemoine, L., “Effects of Water Absorption and Osmotic Degradation on Long-term Behavior of Glass Fiber Reinforced Polyester”, Polymer Composites, Vol. 16, (2004), 349-356.

12. Lundgren, J., Gudmundson, P., “Moisture Absorption in Glass-Fiber/Epoxy Laminates with Transverse Matrix Cracks”, Composites Science and Technology, Vol. 59, (1999), 1983-1991.

13. Arnold, J.C., “The Effects of Physical Aging on the Brittle Fracture Behavior of Polymers”, Polymer Engineering and Science, Vol. 35, (2004), 165-169.

14. Al-Dulaijan, S.U., Al-Zahrani, M.M., Nanni, A., Boothby, T.E. and Boothby, T.E., “Effect of Environmental Pre-Conditioning on Bond of FRP Reinforcement to Concrete”, Journal of Reinforced Plastics and Composites, Vol. 20, (2001), 881-900.

15. Naceri, A. and Vautrin, A., “Proposition D’un Modèle Expérimental Pour La Caractérisation De La Réponse Mécanique D’un Composite (Tissu De Verre/Résine Époxyde”, Journal De Physique IV, Vol. 124, (2005), 201-206.





International Journal of Engineering
E-mail: office@ije.ir
Web Site: http://www.ije.ir