The Effects of Wet Etching of Glass Fibers and Polyamide Fibers on The Bending and Impact Properties of The Resulting Composite Materials | ||
Iraqi journal of mechanical and material engineering | ||
Article 1, Volume 9, Issue 2, August 2009, Pages 265-278 | ||
Abstract | ||
Improving the bonding strength can be achieved by surface treatment of fibers . Etching is one of the methods of this treatment , in this investigation wet etching of E-glass fibers and polyamide fibers carried out by using (H2O + NaOH) solution to get pits on their surface to increase the surface roughness . Group of tests was carried out to study the effect of this treatment on the mechanical (bending and impact) properties of a material composed of unsaturated polyester reinforced by (10 % wt) of etched glass fibers and Etched polyamide fibers . Also Calculation of the weight loss and executing of microscopic photo . The results show : - Increase of the bending strength of etched glass fibers reinforced composite materials with a maximum percentage of (301 %) compared with samples reinforced with untreated fibers . This maximum percentage was found when the fibers are treated at (25 oC) for (1 % NaOH) and (3 hr) . - Increase of the bending strength of etched polyamide fibers reinforced composite materials with a maximum percentage of (155 %) compared with samples reinforced with untreated fibers . This maximum percentage was found when the fibers are treated at (25 oC) for (1.5 % NaOH) and (3 hr) . - Increase of the impact strength of etched glass fibers reinforced composite materials with a maximum percentage of (270 %) compared with samples reinforced with untreated fibers . This maximum percentage was found when the fibers are treated at (25 oC) for (1 % NaOH) and (3 hr) . - Increase of the impact strength of etched polyamide fibers reinforced composite materials with a maximum percentage of (232 %) compared with samples reinforced with untreated fibers . This maximum percentage was found when the fibers are treated at (25 oC) for (0.5 % NaOH) and (5 hr) . - Increase of the weight loss of polyamide fibers than weigth loss of glass fibers . | ||
Keywords | ||
wet etching; Surface Roughness; Surface treatment; Glass Fibers; polyamide fibers; Bending test; impact test and composite materials | ||
Statistics Article View: 77 PDF Download: 65 |