000			03128nam a2200349 a 4500
003			EG-GiCUC
005			20250223032937.0
008			220901s2022 ua dho f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.13.13.M.Sc.2022.Al.M
100	0		_aAlaa Elsayed Mohamed Mohamed Mahmoud
245	1	0	_aMechanical Properties Enhancement Of Highdensity Polyethylene Using Titanium Oxide Nanoparticles / _cAlaa Elsayed Mohamed Mohamed Mahmoud ; Supervised Emadeldin Farouk Elkashif , Sherif Ali Abdelrahman
246	1	5	_aتحسين الخصائص الميكانيكية للبولي إيثيلين عالي الكثافة باستخدام جزيئات أكسيد التيتانيوم النانوية
260			_aCairo : _bAlaa Elsayed Mohamed Mohamed Mahmoud , _c2022
300			_a66 P . : _bcharts , facsimiles , photographs ; _c30cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production
520			_aThe goal of this research is to find the best quality that arises after hip joint replacement, such as strength, wear, and the coefficient of friction between the joints. TiO2 nanoparticles of various concentrations were employed in this study with different weight ratios (5 %, 10%, 15%, and 20%) will be used to improve the mechanical characteristics of HDPE, which is the most frequently used polymer in biomedical applications. It is utilized as a matrix in composite nanoparticles because of its outstanding characteristics, such as high flexibility and durability. The composite nanoparticles are fabricated by using dispersion technique (extrude twin screw (brabender machine)). And then they pressed in a hot molded die. The test specimen are cut from the samples with standard shapes and sizes. The morphology, crystal structure, and mechanical properties are characterized by different techniques. Scanning electron microscopy (SEM) showed the variations of particle diameters. X-ray diffraction (XRD) studied the effect of TiO2 on the HDPE crystal structure and the tensile test showed the mechanical properties of the composite. Finally, a wear test was performed to determine the tribological behavior. The composite tensile strength and young's modulus have been improved by 10% and 5%, respectively while the wear rate has been reduced by 40% compared with pure HDPE. This results are due to the fine nano grain size which are obtain from grinding processes which are showed in the TEM and SEM test. Also the reason of the enhancement of tensile strength, Hardness and wear rate are due to strong bonding between the particle and the matrix
530			_aIssued also as CD
650		0	_ananoparticles
653			_aCompositenanoparticles
653			_aHigh Density polyethylene
653			_aTitanium dioxide
700	0		_aEmadeldin Farouk Elkashif , _eSupervisor
700	0		_aSherif Ali Abdelrahman , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aAmira _eCataloger
905			_eRevisor
942			_2ddc _cTH
999			_c84775 _d84775