000			02953cam a2200337 a 4500
003			EG-GiCUC
005			20250223031731.0
008			170611s2016 ua h f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.12.10.M.Sc.2016.Em.S
100	0		_aEmad Sobhy Mohamed Goda
245	1	0	_aSynthesis of new flame retardant materials and smoke suppressants based on modified magnesium hydroxide for ABS copolymer and polystyrene / _cEmad Sobhy Mohamed Goda ; Supervised Magdy Sabaa Wadid Farag Sabaa , Mohamed Aly Hassan
246	1	5	_aو البولى ستيرين ABS تشييد مواد جديدة مقاومة للحريق و مثبطة للدخان قائمة على هيدروكسيد الماغنيسيوم المطور لبوليمير المشترك
260			_aCairo : _bEmad Sobhy Mohamed Goda , _c2016
300			_a151 P. : _bfacsimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Science - Department of Organic Chemistry
520			_aThe presented thesis is oriented to a new developed method for the synthesis and modification of magnesium hydroxide nanoparticles (MH-NPs) using the ball milling technique in the presence of organic phosphate compounds which were maleate monophosphate (MP), maleate diphosphate (DP), polymaleate diphosphate (PDP) and polymaleate monophosphate (PMP). The size of MH-NPs was controlled using the developed method with diameter range from 46-125 nm. The inclusion of these nanoparticles in acrylonitrile-butadiene styrene (ABS) and polystyrene (PS) were done producing well dispersed nanocomposites. The MH-NPs and the new polymer nanocomposites were characterized using fourier transform infrared (FTIR), transmittance electron microscope (TEM), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). The flammability and smoke measurements for the new nanocomposites were studied using UL94 flame chamber, cone calorimeter and smoke density chamber. The rate of burning of the ABS nanocomposites was reduced to 9.8 mm.min-1 compared to 42.5 mm.min-1 for the virgin polymer and the burning rate of PS nanocomposites was reduced by 75% compared to the pure PS. The peak heat release rate (PHRR) of the new ABS and PS nanocomposites were reduced by 71,68% compared to the pure polymers, respectively. The smoke properties (maximum specific optical density Dm) for the developed ABS and PS nanocomposites were significantly reduced achieving 62% and 46% reduction compared to pure ABS and PS
530			_aIssued also as CD
653		4	_aFlammability
653		4	_aMagnesium hydroxide nanoparticles
653		4	_aNanocomposites
700	0		_aMagdy Sabaa Wadid Farag Sabaa , _eSupervisor
700	0		_aMohamed Aly Hassan , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aSamia _eCataloger
942			_2ddc _cTH
999			_c61158 _d61158