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Register a new userEffect of Using Metallic Oxides (Al2O3,MgO,TiO2 ) on Flammability and Fire Resistance of Unsaturated Polyester
تأثير استخدام الأكاسيد المعدنية (AL2O3, MGO ,TIO2) على إعاقة ومقاومة اللهب للبولي استر غير المشبع
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في هذا البحث تم إجراء دراسة تجريبية لعينات من البولي استر غير المشبع مضاف إليها نسب محددة ضئيلة 2,4,5,7)%) من أكاسيد المغنزيوم و الألمنيوم و التيتانيوم على شكل بودرة بهدف تحديد مدى مقاومتها و إعاقتها للهب, و ذلك من خلال قياس الزمن المستغرق لثقب العينات، و قياس الفقد في الوزن و التغير في القطر للعينات بعد الحرق و دراسة تأثير اللهب على سطح العينات. و لإجراء الاختبارات تم استخدام شعلة لهب الأكسي استلين و صمم لهذه الغاية جهاز تم تصنيعه في مخابر الكلية. بّينت النتائج أن مادة أكسيد المغنزيوم هي الأفضل بين الأكاسيد المستخدمة من حيث مقاومتها للهب و إعاقتها له حيث بلغت نسبة الفقد في وزن العينات حوالي 16% عند أعلى نسبة إضافة مستخدمة في البحث و هي 7% مقارنة مع العينات التي لا تحوي مواد إضافة و التي بلغت نسبة الفقد فيها حوالي 27% كما أن زمن ثقب مثل هذه العينات بلغ حوالي sec112 مقارنة مع العينات بدون نسبة إضافة و التي بلغ فيها زمن الثقب حوالي sec 45.
In this paper an experimental investigation of unsaturated polyester(UPR) with different weight fractions(2,4,5,7 )wt% of (Al2O3,MgO,TiO2) as powders ,has been done. the identification of their flammability and fire resistance ranges are found out . the time needed to puncture the samples, the mass loss, the diameter variation ,and the flame effect on the samples surface are measured. the samples were tested by Oxyacetylene flame using a device which is designed in the Faculty of Mechanical and Electrical Engineering labs. The results showed that (MgO) is the best one for its flammability and fire resistance. The longest time before puncture , and the lowest mass loss were achieved by( UPR+ 7% MgO) with(16% mass loss in 112 sec ), while pure UPR has ( 27% mass loss in 45 sec).
References used
LAOUTID F ; BONNAUD L ; ALEXANDRE M ; LOPEZ-CUESTA J ., New prospects in flame retardant polymer materials: from fundamentals to nano composites , Ph. Dubois , Center of Innovation and Research in Materials and Polymers (CIRMAP), 2007.20-32
HUGHES W., Development and Testing of Flame Retardant Additives and Polymers , the National Technical Information Service (NTIS) , Virginia, 2007.45-55
MOURITZ A ., GIBSON A.G., Fire Properties of Polymer Composite Materials, solid mechanics and its application , 2006, 143
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In this paper an experimental investigation of unsaturated polyester(UPR) with
different weight fractions(2,4,5,7 )wt% of (Al2O3,MgO,TiO2) as powders ,has been done.
the identification of their flammability and fire resistance ranges are found out
. the time
needed to puncture the samples, the mass loss, the diameter variation ,and the flame effect
on the samples surface are measured. the samples were tested by Oxyacetylene flame using
a device which is designed in the Faculty of Mechanical and Electrical Engineering labs.
The results showed that (MgO) is the best one for its flammability and fire
resistance. The longest time before puncture , and the lowest mass loss were achieved by(
UPR+ 7% MgO) with(16% mass loss in 112 sec ), while pure UPR has ( 27% mass loss in
45 sec).
This search aims to study the effect of additive materials ( Ethyl Methyl Keton
Peroxide MEKP , Cobalt Naphthenate ) at the important values of (stress-strain) curves
( stress and elongation at break ) for the preparing specimens from reinforced an
d nonreinforced
with fiber glass unsaturated polyester resin.
The result showed that the investigated parameters are clearly affected with using
additive materials and the optimum concentration for non-reinforced specimens which was
curing in room temperature was (1% MEKP + 1% Cobalt Naphthenate) and (0.8% MEKP
+ 1% Cobalt Naphthenate), and for reinforced specimens with fiber glass was:( 1% MEKP
+ 0.8% Cobalt Naphthenate) and ((0.2-0.4) % MEKP + 1% Cobalt Naphthenate).
The results showed also that it is possible to get the better values of tensile stress at
break when the specimens was curing in oven at 100 Cº and treated at this temperature for
15 min.
This research aims to study the effect of adding inorganic waste (Marble powder -
glass powder) on the volumetric and longitudinal shrinkage curves at unsaturated polyester
resin, tests showed that samples exposed to volumetric and longitudinal shr
ink and
occurrence of consecutive gradients in volumetric shrinkage values. Whatever the ratio of
the added materials (marble powder - the glass powder) will effect the behaviour of the
unsaturated polyester hardening, that means it will effect the volumetric shrinkage.
It is necessary to study the volumetric and longitudinal shrinkage values because
they affect the product size to be dealt with, this value should be taken into account in the
design so that should be added this amount of volumetric shrinkage to the dimensions to
designed templates in order to avoid potential variations occurring in the final product.
Preliminary results showed that the value of volumetric shrinkage got up (5%) and the
curves tend to stability, almost three weeks after the initial hardening incident.
This research aims to study the effect of heat treatment on curing of reinforced Unsaturated Polyester Resin (UPR) with fiberglass, and to study the effect of storage time and the time of exposure to natural aging on curves absorption.
The results
showed that it is very difficult to reach a fully curing to UPR matrix, and
Storage samples for three years reveal resistance to degradation in fresh and seawater comparing with storage samples for three months, or aging by exposed to environmental for three years. The results showed also that the absorption occurs by thin film, and not prevent by increasing the layers of reinforcement
As a result of the development of the use of reinforced Composites with fibers in
practical applications continuously, research aims to study the effect of proportion piroxide
additives to unsaturated polyester resin on the tensile properties of th
e samples prepared
from unsaturated polyester resin reinforced with glass fiber used in wind turbine blades
manufacturing, and also studying the effect of for the application of heat treatment
operations on the hardening of the unsaturated polyester and tensile properties after heat
treatment process the application in order to improve the properties of these blades.
Test samples were prepared containing ratios (1% - 1.5% - 2%) of methyl Etel
ketone piroxide MEKP and test results showed that the best ratio at 1.5%. While the heat
treatment results showed that the best values for tensile strength at break of the samples are
treated to a time of / 48 hours /.
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