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Improvement of Thermal Properties for Binary Systems PVFPh, PVF-B by Addition of Silicon Carbide | ||
| Engineering and Technology Journal | ||
| Volume 25, Issue 7, 2007, Pages 836-848 PDF (139.98 K) | ||
| DOI: 10.30684/etj.25.7.3 | ||
| Author | ||
| A. Abbas Mohammed | ||
| Abstract | ||
| Two binary systems of (PVF-Ph and PVF-B) were prepared at specific conditions, and then thermal properties were improved by addition of a ceramic material (SiC). A different mixing ratio of ceramic material (SiC) powder was added to a prepared binaries (PVF-Ph, PVF-B) at (polyvinyl formal-phenol, and polyvinyl formal-bitumen) with a range (0.1-1)gm varied with (1-0.1)gm addition from both phenol (Ph) and bitumen ( B ). The thermal properties (thermal conductivity, stability) were measured for both improved binary systems (PVF-Ph, and PVF-B), and the results proved that: All thermal properties of two binaries (PVF-Ph, PVF-B) are modified with excellent properties of bitumen that will be raised from(50˚C to 250˚C) and other system (PVF-Ph) improved from (120˚C to 200˚C). Also the thermal conductivity is modified at a wide range from (0.0999 w/m˚C to 0.000477 w/m˚C.). A home made thermogravimetric system was designed to give TG-analysis curve and check the stability of composite prepared system, where the results proved that the optimum mixing ratio of composite system gives high stability from (100˚C to 315˚C) with excess of ( 215˚C) than base one (PVF-B). | ||
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