Silicone oil has a variety of uses including; A softener for silicone rubbers. Oil will both the reduce the viscosity of the rubber as well as soften it. Unlike deadener, silicone oil does not cross link with the silicone.
Cross linking is when the additive becomes part of the make up of the cured rubber with molecules that are bonded together. By not crosslinking the oil is free to move within the rubber and will eventually leach out. Over time this makes the cured rubber oily to the touch and difficult to paint and work with. This is why deadener is preferred as an additive for softening addition cured silicones such as Plat Sil Gel 10 and 25.
As a lubricant. Silicone oils won’t degrade latex rubber so are a good lubricant for various applications involving latex based products such as a lubricant for a needle when punching hair in to a foam latex and also for punching hair in to silicone rubber.
As a release agent. Silicone is a great release agent but you need to be selective about what products you use it with as silicone can act as a de foaming agent on products such as polyurethane foams. The silicone prevents the formation of bubbles and the foams can collapse when in contact with it.
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