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Article
Effect of Al2O3 Powder on Some Mechanical and Physical Properties for Unsaturated Polyester Resin Hybrid Composites Materials Reinforced by Carbon and Glass Fibers

Author: Reem Alaa Mohammed
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2016 Volume: 34 Issue: 12 Part (A) Engineering Pages: 2371-2379
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

This research is a study of the effect of Al2O3 powder on physical and mechanical properties of the polymer hybrid composites based on unsaturated polyester resin reinforced with carbon and glass fibers. The samples were made by a hand lay-up method according to ASTM standard for various volume fractions of additives. The polymer composites materials reinforced with carbon and glass fibers are the most used in manufacture of components such as pip, part of aerospace, and leisure industries and automotive.The polyester resin matrixwas strengthened with 3% carbon and glass fibers with 1%, 3%, 5%, 7% Al2O3 powders. The water absorption, hardness (shore D), impact test, and flexural strength properties are studied. The results show the specimens (UP+3%C.F+7%Al2O3) and(UP+3%G.F+7%Al2O3) had the maximum hardness (shore D) and water absorptionwhen compared withunfilledpolyester resinspecimen, it can be observed that the specimens(UP+3%C.F+5%Al2O3) and (UP+3%G.F+5%Al2O3) have maximum impact strength and flexural strengthcompared with specimens (UP+3%C.F+7%Al2O3)and (UP+3%G.F+7%Al2O3) .


Article
Mechanical and physical properties of carbon nanotubes with Kevlar fiber reinforced with polyester resin
الخواص الميكانيكية و الفيزيائية لانابيب الكاربون النانوية مع الياف الكفلر المقواة مع راتنج البولي استر

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Abstract

In this research study Hardness (shore D), Water absorption, Flexural, Impact Test, and Fracture Toughness of polymer nano composites.The polymer nano composites based on unsaturated polyester resin reinforced with Kevlar fibers (K.F). The samples are attended by hand lay – up method according to (Rule mixture) for various volume fractions of unsaturated polyester resin, fiber and carbon nanotube. The polyester resin was matrix strengthened with 3% volume fraction from Kevlar fiber and (0.5%, 1%, 1.5%, 2%( volume fractions of carbon nanotube. The water absorption, hardness (shore D), flexural test, impact testand toughness fracture properties were studied. Results showed that the water absorption increase with volume fraction increase of fiber with Carbon Nanotube, the sample (polyester+3%K.F+0.5% CNTs) has lower water absorption than other samples. The hardness (shore D), flexural test, impact testand toughness fracture for the sample (polyester+3%C.F+0.5% CNTs) has higher value for Nano- composites. Nano composites, Carbon nanotube, Kevlar fiber, Hardness (shore D), Water absorption, Flexural Strength, Impact Test, Toughness Fracture.

تم في هذا البحث دراسة الصلادة (شورD), امتصاصية الماء, مقاومة الكسر, اختبار الصدمة و متانة الكسر لمتراكبات نانوية ذات اساس راتنج البولي استر غير المشبع مقواة بألياف الكفلر. العينات جهزت بطريقة الصب اليدوي وفقالقاعدة الخلط لكسور حجمية مختلفة من راتنج البولي استر غير المشبع والالياف وانابيب الكاربون النانوية. راتنج البولي استر كان ارضية مقواة مع 3%كسر حجمي من الياف الكفلر و (0.5 ,1 ,1.5 , 2 ) % كسر حجمي لانابيب الكاربون النانوية. تم دراسة خواص امتصاصية الماء, صلادة (شور(D, اختبار الصدمة ومقاومة الكسر. اظهرت النتائج بان امتصاصيه الماء تزداد مع زيادة الكسر الحجمي للالياف مع انابيب الكاربون النانوية, العينه (بولي استر + 3% الياف كفلر + 0.5 % انابيب اكاربون النانوية) تمتلك اقل امتصاصية ماء من العينات الاخرى. الصلادة (شورD), فحص الكسر, فحص الصدمة ومتانة الكسر للعينه (بولي استر +3% الياف كفلر + 0.5 %انابيب الكاربون انانوية) تمتلك اعلى قيمه للمتراكبات النانوية.

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