| Silicone fluid is a water clear, odorless, low viscosity, silicone
fluid which was especially designed as a thinner for silicone RTV rubber
compounds. It is essentially non-toxic, non-irritating, and non-sensitizing.
Because of the extremely low surface tension of this fluid, it aids the
flow of the RTV compound and the wet-out of the pattern. Normally, this
thinner is added at a 10% level based on the weight of RTV base being
used. At this level, no loss of physical property can be observed. |
-
Reduced Viscosity. RTVs with 10% thinner will
show a much lower viscosity, and air release properties will be
enhanced. Flowability will also be noticeably improved. This insures
that the RTV will get into the detail better.
-
Increased Chemical Resistance. In some applications,
the presence of RTV diluent improves the resistance to chemical
attack and thus extends mold life. In fact, some firms make it a
practice to wipe additional thinner onto the face of the mold periodically
to bolster the release and the life of the mold.
-
Lower Durometer. In concentrations above 10%,
the thinner will begin to plasticize the RTV to produce a cured
product that is softer than usual.
-
Lower Tear Strength. Again, in concentrations
above 10%, the thinner will begin to lower the tear strength and
the tensile strength, while elongation is increased.
|
