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A study of the effect of nanomaterials on the physical properties of epoxy composites
دراسة تأثير المواد النانوية على الخصائص الفيزياوية لمتراكبات الايبوكسي

Authors: Balqees Mohammed Deyaa بلقيس محمد ضياء --- Teba Mageed Hameed طيبة مجيد حميد
Journal: Iraqi Journal of Physics المجلة العراقية للفيزياء ISSN: 20704003 Year: 2017 Volume: 15 Issue: 32 Pages: 68-76
Publisher: Baghdad University جامعة بغداد

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Abstract

This research studies the effect of addition of some nanoparticles (MgO,CuO) and grain size (30,40nm) on some physical properties (impact strength, hardness and thermal conductivity) for a matrix blend of epoxy resin with SBR rubber. Hand –Lay up method was used to prepare the samples. All samples were immersed in water for 9 weeks.The Results showed decreased in the values of impact strength and hardness but increased the coefficient of thermal conductivity.

تم في هذا البحث دراسة تأثير اضافة المواد النانوية (MgO, CuO) و بحجم حبيبي (30,40nm) على الخصائص الفيزيائية (مقاومة الصدمة, الصلادة والتوصيلية الحرارية) لخليط من رانتج الايبوكسي مع مطاط ستايريين بيوتادايين (SBR) قبل وبعد الغمر لمدة (10 اسابيع). حيث تم تحضير خليط بوليمري مكون من (EP+SBR) كمادة اساس. استخدمت طريقة القولبة اليدوية في تحضير النماذج كما تم غمر النماذج في الماء لمدة 9 اسابيع ولوحظ نقصان في قيم مقاومة الصدمة والصلادة وزيادة في قيم معامل التوصيل الحراري.


Article
Effect of Addition CuO Nanoparticle to Quenching Media on Properties of Medium Carbon Steel

Author: J.H. Mohmmed
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2017 Volume: 35 Issue: 9 Part (A) Engineering Pages: 894-898
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

In current work the effect of addition CuO nanoparticles to the polyalkylene glycol (PAG) water solution quenching media on some properties of medium carbon steel was examined. Five cooling media was used to quenching the steel: water, 5 and 10 % water solution of polyalkylene glycol, and 5 and 10 % water solution of polyalkylene glycol with addition of 1% of CuO nanoparticles. In addition, in this study, the cooling curves for these media and the properties of tensile and affect for quenched and unquenched medium carbon steel were studied and evaluated. The results showed that the addition of CuO nanoparticles strongly improve the quenching media features and contribute to reduce water quenched sample defects (such as distortion and cracking), while at the same time still maintaining the desired mechanical property improvements. The experimental observations indicate that samples quenched 5% polyalkylene glycol water solution of with 1% CuO nanoparticles brought the best combination of mechanical properties.

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