Dow HV 1860/023
Application Type Primer 1 Part or 2 Part 1-Part Material Form Liquid Substrate Silicone rubber Manufacturer Dow Chemistry Siloxane, Heptane Cure Method Solvent, Air dry Cure Temperature (°C) 20 to 25 Cure Time (min) 15 to 90 Viscosity (cPs) Low, 0.6 (mPa.s)
Technical Data for Dow HV 1860/023
Cure Temperature (°C) 20 to 25 Cure Time (min) 15 to 90 Viscosity (cPs) Low, 0.6 (mPa.s) Test Method
Specific Gravity 0.720 Test Method Flash Point (°F) 24.8 Test Method % Solids (%) 7
Shelf Life Details When stored at or below 25°C (77°F) in the original unopened containers, this product has a usable life of 450 days from the date of production., This material should be stored in a warehouse suitable for flammable materials., Containers should be kept tightly sealed when not in use. The primer hydrolyzes upon contact with air moisture, and prolonged exposure will reduce or destroy its effectiveness., Once hydrolyzed, indicated by a milky appearance, the material cannot be reclaimed, and will contaminate any unreacted primer. Shelf Life Type from the date of production Shelf Life (mon) 15
Best Practices for Dow HV 1860/023
Thoroughly clean and degrease the surface using a scouring pad, or a coarse lint-free cloth. Rinse all cleaning agents off the surface with acetone, MEK or isopropanol. Allow the surface to dry.
Alternatively, aqueous degreasing with steam or hot water can be used to effectively prepare surfaces. Rinse with demineralised water and allow to dry thoroughly. Ensure no residues are left on the surface.
Apply a thin coating of DOW CORNING HV 1860/023 Primer by dipping, brushing or spraying. In most cases a thin primer film will give the best adhesion. Film thickness can be roughly estimated by appearance, the thicker the film the stronger the white tint. If cracks appear in the chalked film, the coating DOW CORNING HV 1860/023 can be diluted with solvent to achieve lighter coats by dipping or spraying. See typical properties for appropriate solvents. All solvents must be water-free.
At normal temperature and humidity conditions (50% R.H. and room temperature) the primer should be allowed to air dry for 15 to 90 minutes. Low humidity will mean longer drying times. Primer which is allowed to overcure will result in poor adhesion, under normal conditions this should be no longer than 6 hours.
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