Controlled Preparation of Thermally Stable Fe-Poly(dimethylsiloxane) Composite by Magnetic Induction Heating
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Date
2019-05-07
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
The most challenging task in the preparation of poly(dimethylsiloxane) composites is to
control the curing time as well as to enhance their thermal and swelling behavior. Curing rate can
be modified and controlled by a range of iron powder contents to achieve a desired working time,
where iron is used as self-heating particles. Iron under alternative current magnetic field (ACMF) is
able to generate thermal energy, providing a benefit in accelerating the curing of composites. Three
types of iron-Poly(dimethylsiloxane) (Fe-PDMS) composites were prepared under ACMF with iron
content 5, 10, and 15 wt %. The curing process was investigated by FTIR, while the morphology and
the thermal stability were examined by SEM, DMA, and TGA. The heating’s profile was studied as
functions of iron content and induction time. It was found that the time required to complete curing
was reduced and the curing temperature was controlled by varying the iron content and induction
time. In addition, the thermal stability and the swelling behavior of the prepared composites were
enhanced in comparison with the conventional PDMS and thus offer a promising route to obtain
thermally stable composites.
Description
Subject(s)
PDMS composites, induction heating, thermal stability