Effect of water absorption on impact strength for epoxy-glass fibers composite | ||
| Journal of University of Anbar for Pure Science | ||
| Article 17, Volume 5, Issue 2, August 2011, Pages 67-72 PDF (433.27 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.37652/juaps.2011.44116 | ||
| Author | ||
| Qayes Abdullah Abbas* | ||
| College of Education for pure sciences- University of Anbar | ||
| Abstract | ||
| Hand lay-up method was used to prepare sheets of epoxy (EP) reinforced with 12 layers of (0 -90 ) glass fiber mat with volume fraction equal to 30%. The sheets of Ep- glass fiber composite were cut to samples with standard dimensions for charpy impact test. The main objective of this research was to study the effect of water absorption on impact strength for epoxy-12 glass fiber composite. Diffusivity behavior and diffusion coefficient were investigated. The samples were dividing to three groups immersed in distilled water for different time, the first group 15 days ,the second group 27 days and the last 39 days at constant temperature(±20)C the mass gain recorded every 3 days till saturation (M ) after that the mass gain decreased .the results showed that the maximum diffusion coefficient (minimum absorption resistance ) was for sample (A),while the minimum diffusion coefficient (maximum absorption resistance) was for sample (C). The impact strength has been investigated for samples before and after the immersion in distilled water for different time. The results show that the impact strength decreased with increasing the time of immersion for samples | ||
| Keywords | ||
| composite material; Impact strength | ||
| References | ||
|
1-The maximum mass gain was of the sample(C) till saturation (M) after that the mass gain decreased.
2- The maximum diffusion coefficient (minimum absorption resistance) was for the sample (A) while the minimum diffusion coefficient (maximum absorption resistance) was for the sample(C)
3- Increasing the time of immersion decreased the impact strength of the samples.
References
[1] .Rita Roy, Sarkar,B.K., Bose, N.R. ,”Effects of moisture on the mechanical properties of glass fiber reinforced vinylester resin composites”, Ball. Master.Sci.Vol.24,No:1 pp.(87-94) , Indian academy of science. (2001)
[2] Gupta,V.B.,Drzal.L.T.,and Rich.M.J.”Physical basis of moisture transport in a cured epoxy resin system”,J.Apple.Polym.Sci.”26:pp(4467-4493). (1985)
[3] Diamant,Y.Marom, G.and Broutman, M.J., ”Effect of network structure on moisture absorption of epoxy resin”, j.Appl.Polym. Sci.26: pp(3015-3025). (1981)
[4] Pascault,J.P.,Sautereau ,H.Verda, J. and Williams,R.J,” thermosetting polymers” Marcel Dekker,NEWYORK. .(2002)
[5] Sahraoui,S.,and Latailade J.L.,” Analysis of load oscillations in instrumented impact testing”Journal of engineering fracture mechanics, vol.6, no.4, ,p.p 437-446. (1998)
[6] Joel R.Fried, ”Polymer science & Technology” ,2 Ed,prentice-Hall, Inc, (2005).
[7] Bhatnagar m.s.,”A Textbook of polymers,Chemistry and Technology of polymers, processing and applications” volume II,S.chand & company Ltd, 1 Ed,(2004).
[8]http://www.scribd.com/doc/47414044/ A4-charpy lab-“Impact strength of steel and manutacturing statistics”.1996
[9] lee,M.Cand peppas, N.”Water transport in epoxy resin” ,prog. polym. Sci.18:pp(947-961). (1993)
[10] Espert A, Vilaplana F, Karlsson S. “Comparison of water absorption in natural cellulosic fibres from wood and one-year crops in polypropylene composites and its influence on their mechanical properties” . Compos Part A; 35:1267 –76.(2002)
[11] Karmaker AC. “Effect of water absorption on dimensional stability and impact energy of jute fibre reinforced polypropylene”. J Mater Sci Lett; 16:462. (1997)
[12] Sarkar,B.K,”the mechanical properties of vinylester risen matrix composites”, Bull. Mater. Sci.21 pp (329-336). (1998).
[13] Soutis, C.and Turkmen,D. J.Comp .Master.31, pp (832-835). (1997).
[14] Chen Zou, J C Fothergill, S W Rowe,” The effect of water absorption on the dielectric properties of epoxy nanocomposites “Department of Engineering, University of Leicester, Leicester, LE1 7RH UK.IEEE 15(1) pp.(106-117),fep.(2008)
[15] Mayers, M.E.and Abu-Isq,I.A. J.Appl. Polym .Sci.32 pp. (2515-2520) (1986)
[16] Yang GC, Zeng HM, Li JJ, Jian NB, Zhang WB. “Relation of modification and tensile properties of sisal fiber”. Acta Sci Nat Uni Sunyatseni 1996; 35:53–7. COMPOSITES” 13th European Conference on Composite Materials, Stockholm, Sweden. June 2-5 (2008)
| ||
|
Statistics Article View: 240 PDF Download: 174 |
||