They are RTV-2 silicone rubber, pourable, bi-component and vulcanizing at room-temperature with a poly-addition process. They don’t contain toxic or corrosive substances and so don’t require particular security measures during the storage. These products are applied by spray pump system. They are used to produce vertical moulds of big dimension. High mechanical properties and low viscosity give very flexible and resistant moulds and high details reproduction.
How to use
The application is made only by an automatic mixer. Make sure that the model to duplicate is perfectly clean and dry. Before using shake well the bottles of part A and B. Weigh the same quantity of part A and B. If the proportions aren’t exact, the curing times and the final properties can be different. Start the mixer for the application paying attention to get the same quantity of part A and part B. Whit the help of a nozzle, spray the product evenly on the surface to copy forming a thin layer of about 1 mm. Repeat this operation in order to reinforce the mould until you reach the desired consistency. A thickness of 5-10 mm is enough. The curing speed is influenced by the temperature. We recommend to work in an isothermal place at 23°C. Higher temperatures accelerate the curing times, lower temperatures reduce them. The cured silicone can be demoulded after setting time. In order to reach the best performance of the moulds, we suggest to wait for 24 hours before using them. Some inhibitions to vulcanization process may occur when the silicone rubber get in contact with amines, plasticines, metal salts, sulphur, tin catalyst and poly-condensation silicone rubber. To avoid any inhibition problems, we recommend a preliminary test for the compatibility of the silicone on the material to duplicate. The products, when stored under appropriate conditions, are stable and usable for 12 months. We suggest to keep the products in their original packaging, well-closed at a temperature between +7°C and +27°C, in well-aired places. Close always the bottles after use. Do not reverse the cap.
FEINGOSIL PA Spray 22 RTV-2 silicone rubber for vertical moulds
Mix ratio: 100:10
Viscosity: 7.000 mPa∙s
Working time: 3 minutes
Setting time: 15 ÷ 20 minutes
Hardness 24 h: 22 Shore A