Hydrophillic coating on silicone
Hydrophillic coating on silicone
(OP)
I have a large number of silicone mouldings which are absorbing too much water. The problem was due to using a silicone filled with precipitated silica rather than fumed silica. Precipitated silica absorbs up to 8% water whereas the fumed silica absorbs only 1.5%. I have tried drying the mouldings and painting with activated Silicone oil to reduce absorbtion but this did not work. Does anybody know of a coating or process which could reduce the water absorbtion





RE: Hydrophillic coating on silicone
RE: Hydrophillic coating on silicone
Silicone oil is one of the most water-repellent substances around, but probably acts as a semi-solvent to your cured silicone rubber.
RE: Hydrophillic coating on silicone