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Study the Effect of Coupling Agents (Polyvinyl alcohol) and (Lignin) on Mechanical Properties for Polymer Composite Materials
دراسة تأثيرعوامل الربط (بولي فينيل الكحول) و (اللجنين) على الخصائص الميكانيكية لمواد بوليمرية متراكبة

Author: Balkees Mohammed Diaa بلقيس محمد ضياء
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2016 Volume: 34 Issue: 2 Part (B) Scientific Pages: 26-34
Publisher: University of Technology الجامعة التكنولوجية


In this research study the mechanical properties of (Impact, Hardness and Surface roughness) for PMCs materials that used for (Load-bearing structure, Sandwich panels , radio controlled vehicles, sporting goods …etc.), the PMCs materials made from epoxy resin (Polyp rime-EP) type as matrix and a random glass fiber (E-type) as a reinforcementwith volume fraction (20%) by Hand-Lay up process after addition of coupling agent (Polyvinylalcohol (PVA)) with percent of (0.5%) for first sample and addition of coupling agent (Lignin (Lg)) with percent of (0.5%)for second sample but third sample was polymer composite material without addition of coupling agent for comparing with others, and we noticed an enhancement in mechanical properties for polymer composite material after addition of coupling agent. Either when immersion the three samples in solutions, first solution was water (H2O) and the second solution nitric acid (HNO3) diluted with concentration (0.1N), for seven weeks to each solution, mechanical properties were tested for samples every week, showed decreasing in values of mechanical properties, the polymer composite materials that contains coupling agents expressed more resistance than polymer composite material untreated with coupling agent. And the material that contains coupling agent after immersion in water showed much higher resistance to mechanical properties than immersion in diluted nitric acid.

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