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تحضير 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 Shamra Editor




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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 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.
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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