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Article
Study of The Mechanical Properties For Particulate Polymer Blend Composite
دراسة الخصائص الميكانيكية لمادة متراكبة دقائقية مبنية على أساس ( خليط بوليمري)

Authors: بلقيس محمد ضياء --- أحمد ستار جبار
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2011 Volume: 29 Issue: 2 Pages: 76-85
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

This research involves using epoxy resin and (Nitride Butadiene RubberNBR) to form a blend with different resin ratios (90 – 10)%, (80 – 20)%,(70 – 30)%, and (60 – 40)% to achieve better ratio for impact strength as afunction of better toughness; then reinforced with SiO2 and Al2O3 powders with(20%) volume fraction. Mechanical properties were studied including impactstrength, wear resistance, and hardness before and after immersion in water andHCl (0.5N).Results showed that the composite (epoxy+NBR+SiO2) had betterproperties compared with blend and Al2O3 composite. Also the acid solution hadaffected then properties more than water. All impact and wear and hardnessdecreased after immersing in solution.

Keywords

NBR --- polymer blend --- wear --- impact


Article
Studying the Impact Strength of (Epoxy with TiO2 and MgO) Composite

Authors: Balkees M.Deya’a --- Fawziea M. Hussien --- Intihah Gatia Dway
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2011 Volume: 29 Issue: 10 Pages: 1971-1978
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

This work has been done with using of epoxy resin mixed with polystyrene(90/10) % to compose binary blend. Two types of powder (TiO2, MgO) in two volume fractions of (10, 15) % were used as reinforcement materials to the prepared polymer (B).Hand lay-up technique is used in fabrication of the composite samples. Impact test was carried out for the proper samples in both normal condition and after immersion in water, KOH (0.5 N), HCL (0.5 N) solutions for periods ranging up to 8 weeks. After comparing the results between the polymer blend and their composite, it was found that Impact Strength were greater for the matrix (B) after immersion compared with their values beforeimmersion while the results of the composite before immersion show that(B+10%MgO) has higher impact strength (11.333) KJ/m2


Article
Study Some of Mechanical Properties and Effects of Immersion in Solution of (Epoxy /Unsaturated Polyester) Blend Which Reinforced with Glass Fiber
دراسة بعض الخواص الميكانيكية وتأثير الغمر بالمحاليل لخليط ( اليبوكسي والبولي أستر غير المشبع) المدعم بالياف الزجاج

Author: بشرى حسني موسى
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2011 Volume: 29 Issue: 10 Pages: 464-473
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

In this research, polymer blend was prepared from Epoxy resin and unsaturated polyester resin as matrix material (EP/UPE) with weight ratio (90/10) %. E-glass fibers type (woven roven) was used as a reinforcement material with volume fraction for fibers (Vf =30 %) by using hand lay-up method. Some mechanical properties were studied on the specimens of the above mentioned materials and then the results of the blend (EP/UPE) compared with its composite which was reinforced with glass fibers. The samples were immersed in (H2SO4) and (NaOH) solutions with normality (0.1 N) at room temperature for (7,14, 21, 28) days. The effects of the immersion were noticed on the hardness and impact strength values. It was found that the reinforcement with glass fiber leads to the increasing of both impact strength and shore hardness of the composite before theimmersion. The effects of immersion showed decreasing of hardness values after immersion samples in to both above solutions while the results of impact strength showed an increasing after the immersion in to the acidic solution and decreasing of the pure blend and its composite after the immersion in to the basic solution.

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