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.

Coupling agents --- Lignin --- Lg --- Polyvinyl alcohol --- PVA --- Impact --- Hardness --- Surface Roughness --- Polymer Matrix Composite --- PMCs.

In this research, the effect of improving quality addition (Silane Coupling Agents ,Blowing material and Antioxidants) on the mechanical, thermal and physical properties to test the plastic wood flooring made of Poly Propylene reinforced with particles of Wheat Plant Waste with a size of particle 212 micrometer and by 40% of its weight. The study cleared that the treatment of particles of Waste by the Silane material ratios of between 2-4-6%. The results indicate that composite containing 2-4% showed mark able improvement in the studied properties. The increasing of Silane material ratio to 6% with the addition of blowing material to the plastic wood resulted in thermal insulation. So, It is possible obtain to changing character able absent plastic wood in their Force, mechanical strength and other properties in natural wood.

في هذا البحث درس تأثير اضافة عوامل تحسين النوعية (معززات الالتصاق السيلانية، المواد النافخة، مضادات الاكسدة)على الخواص الميكانيكية والحرارية والفيزيائية لاختبار أرضيات الخشب البلاستيكي المصنوعة من البولي بروبيلين المقواة بدقائق مخلفات نبات الحنطة بحجم دقائقي 212 مايكرومتر وبنسبة 40% من وزنها. اتضح من الدراسة ان معاملة دقائق المخلفات بالمادة السيلانية بنسب تتراوح ما بين 6-4-2%. تشير النتائج الى ان المتراكب الحاوي على نسبة 4-2% اظهر تحسنا ملحوظ في الخصائص المدروسة. كما ان زيادة نسبة المادة السيلانية الى 6% وعند اضافة المادة النافخة الى الخشب البلاستيكي المصنع ادى الى تغييرات في العزل الحراري وبذلك ممكن الحصول على خشب بلاستيكي يتميز بالقوة والمتانة الميكانيكية وخصائص اخرى لا تتوفر في الاخشاب الطبيعية

Coupling Agents --- Agricultural Wastes --- Plastic Wood --- Blowing Material --- Antioxidants --- Friction Resistance --- Hardness and Thermal Conductivity. --- عوامل الربط، المخلفات الزراعية، الخشب البلاستيكي، المادة النافخة، مضادات الاكسدة مقاومة الاحتكاك، الصلادة، الكثافة الحجمية والتوصيلية الحرارية