The Effects of Chemical Treatment of Wood Cinder on the Mechanical Properties of the Composite Materials(Polyester-Wood Excelsior) | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 10, Issue 2, August 2010, Pages 327-339 | ||
| Abstract | ||
| The Mechanical properties of reinforced composite materials depend on bonding strength between reinforcements and matrix , improving the bonding strength can be achieved by surface treatment or sizing . In this investigation chemical treatment for wood excelsior carried out by using (H2O , NaCl , NaOH) solution to increase the surface roughness for excelsior surface . Group of tests was carried out to study the effect of this treatment on the mechanical (bending and compression) properties of a material composed of unsaturated polyester reinforced by (10 % wt) of treated wood excelsior . Also Calculation of the weight loss and executing of microscopic photo . The results show : - Increase of the bending strength of treated wood excelsior reinforced composite materials with a maximum percentage of (228 %) compared with samples reinforced with untreated excelsior . This maximum percentage was found when the excelsior are treated at room tempreature for (H2O) and (2 day) . - Increase of the bending strength of treated wood excelsior reinforced composite materials with a maximum percentage of (40 %) compared with samples reinforced with untreated excelsior , this maximum percentage was found when the excelsior are treated at room tempreature for (10 % NaCl+90%H2O) and (8 day) . - Increase of the bending strength of treated wood excelsior reinforced composite materials with a maximum percentage of (177 %) compared with samples reinforced with untreated excelsior , this maximum percentage was found when the excelsior are treated at room tempreature for (10 % NaOH+90%H2O) and (4 day) . - Increase of the compression strength of treated wood excelsior reinforced composite materials with a maximum percentage of (18 %) compared with samples reinforced with untreated excelsior , this maximum percentage was found when the excelsior are treated at room tempreature for (H2O) and (4 day) . - Increase of the compression strength of treated wood excelsior reinforced composite materials with a maximum percentage of (10 %) compared with samples reinforced with untreated excelsior , this maximum percentage was found when the excelsior are treated at room tempreature for (10 % NaCl+90%H2O) and (8 day) . - decrease of the compression strength of treated wood excelsior reinforced composite materials with a minimum percentage of (25 %) compared with samples reinforced with untreated excelsior , this minimum percentage was found when the excelsior are treated at room tempreature for (10 % NaOH+90%H2O) and (8 day) . - Increase of the weight loss to treated wood excelsior with (NaOH) more than weigth loss of. treated wood excelsior with (NaCl , H2O) . | ||
| Keywords | ||
| Surface Roughness; Surface treatment; wood excelsior; Bending test; compression test and composite materials | ||
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