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Register a new userتحضير مواد مركبة تفلون هباب الفحم و دراسة خواصها الميكانيكية و الكهربائية
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Publication date
2011
and research's language is
العربية
Created by
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يتعرض هذا الفصل إلى سبب طرح فكرة هذا العمل و هي تحديد المخطط التكنولوجي لتصنيع عينات مخبرية من مادة التفلون غير المملوء و من المادة المركبة تفلون هباب الفحم و توصيف هذه العينات بنيوياً - و ميكانيكياً و كهربائياً و الإحاطة بهذه التقانة انطلاقاً من المساحيق. ساهم ذلك في السيطرة التقانية و التوطين الصناعي في سوريا لإنتاج قطع و منتجات من ال PTFE غير المملوء و من المادة المركبة من ال PTFE و هباب الفحم، مع تحقيق سويات جودة عالية و وضع دليل علمي و عملي حول هذه التقانة.
This chapter addresses the grounds behind performing this work which could be summarized in identifying the technological processes to manufacture laboratory samples from unfilled Teflon and composite materials: Teflon+ Carbon Black and characterizing these samples structurally , mechanically and electrically in order to master this powder based Teflon technology. This contributes to the transfer of this technology to the Syrian industrial and economical environment for the production of filled and unfilled PTFE parts and carbon black- PTFE composite materials meeting the required quality levels and establishing scientific and technological guidelines for this technology.
References used
Sina EbenSejjad & Pradip R.Khaladkar. Fluoropolymers Application in Chemical Processing industries; 2005.P 25 ; 26 ; 27 ; 28 ; 29 ; 30 ; 31 ; 38 ; 40 ; 41 ; 42
Jose Antonio Almeida & Jose Carlos C.Veiga. Restructed Filled PTFE Gasket Sheets; 2003. P 46 ; 51 ; 55 ; 56 ; 57
Jri George Drobny. Technology of Fluoropolymers; 2009. P 12 ; 17 ; 20 ; 22 ; 28
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This chapter addresses the grounds behind performing this work which could be summarized in identifying the technological processes to manufacture laboratory samples from unfilled Teflon and composite materials: Teflon+ Carbon Black and characterizin
g these samples structurally , mechanically and electrically in order to master this powder based Teflon technology.
This contributes to the transfer of this technology to the Syrian industrial and economical environment for the production of filled and unfilled PTFE parts and carbon black- PTFE composite materials meeting the required quality levels and establishing scientific and technological guidelines for this technology.
In this research work, an epoxy polymer- Carbon Black composite has been
prepared and characterized regarding the effects of adding carbon black to
epoxy polymer on some structural properties such as polymerization behavior,
cross-linking reaction
time and yield and some properties e. g. glass transition
temperature (Tg), Young modulus (E) and flexural strength (σ).
The cross-linking reaction and glass transition temperature were studied by
Differential Scanning Calorimetry (DSC), and the mechanical tests were done
by Universal Testing Machine.
epoxy – Conductive Carbon Black (Epoxy – CCB) nanocomposite was
prepared with different CCB/Epoxy ratios and ancamine 2280 as a curing
agent.
The present work covered the preparation and study of PP- LLDPE- Coconut shell powder composite materials, the determination of the optimal preparation conditions and the characterization of their physical and mechanical properties.
This research includes an experimental study for the manufacture of
a composite material based on polymer (unsaturated polyester),
reinforced with random fiberglass at different weight fractions. By
suite, it has been studied some mechanical prope
rties of the models
manufactured, to determine the effect of glass fiber content on the
tensile strength, hardness and impact resistance. This study has
shown that the best results were for samples reinforced by 40%
fiberglass, where the tensile strength increased about 70%, hardness
up to 30%, and impact resistance about 43%. It will be observed
that the mechanical properties decrease clearly at 60% of weight
fraction of fiberglass. This fact can be related to the quantity of
unsaturated polyester become inadequate for recharge of the fibers,
which leads to weakness in the forces bonding in composite
materials.
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