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Article
A Manual Kinetic Study for Pyrolysis of Scrap Tires by Use of TG Technique

Author: Mohammed A.Abass
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2011 Volume: 29 Issue: 2 Pages: 341-358
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

The kinetic study of pyrolysis involved the use of a homemadethermogravimertic analysis (TG) system and showed that the reaction isfirst order at high temperature range (390- 450) ºc.The reaction rate constant has been increased with temperature(0.15903- 0.9183) min-1 at the same range of temperature above accordingto Arrhenius model equation modeled Bovier and Gelus, which can beused to estimate the kinetic parameters .the activation energy of reactionis found to be 1.33 kcal/mol. , whereas the frequency factor is equal to 1x10-8 l/mol. sec.From comparison between theoretical and experimental conversion due tothe same model above it could be seen that there is a good agreementbetween theoretical and experimental results and higher temperatures(390-450) ºc but become worse of low temperatures (200-350) ºc.


Article
Effect of some organic fillers on the mechanical properties of high density polyethylene

Authors: Mohammed A . Abass --- Taleb F. AL-Zamili
Journal: JOURNAL OF THI-QAR SCIENCE مجلة علوم ذي قار ISSN: 19918690 Year: 2009 Volume: 1 Issue: 3 Pages: 27-34
Publisher: Thi-Qar University جامعة ذي قار

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Abstract

In this paper , the mechanical properties of high density polyethylene (HDPE grade M624) produced by SCPI / Basrah – Iraq , mixed with the wood flour and bagasse as fillers with 10-50 % w/w have been studied . The maximum tensile strength was observed at 10% w/w of fillers ratio . The elongation , impact strength and fracture energy were decreased with increasing of fillers ratio while the Young modulus and hardness were increased .

في هذا البحث تم دراسة الخواص الميكانيكية لمزائج البولي أثيلين عالي الكثافة صنف M624 والمنتج محليا في الشركة العامة للصناعات البتروكيمياوية / البصرة – العراق باستخدام نشارة الخشب والبكاس كمالئات بنسب 10-50 % ( وزن / وزن ) . وكانت نتائج الدراسة إن قوة الشد تزداد عند النسبة 10% بينما تقل عند النسب الأخرى من المالئ 20 – 50% وتقل قيم الاستطالة وقوة التصادم وطاقة الكسر بزيادة نسبة المالئ المضاف , إضافة لذلك يزداد معامل يونك والصلادة بزيادة نسبة المالئ المضاف .

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