Author
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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