1.Mainly application of silicone mold making rubber Silicone mold making rubber is a two part silicone rubber and curing with tin catalyst. As with a low viscosity, high strength and excellent duplication times, it's widely used for concrete casting and cement products casting, making silicone molds for artificial stone, concrete statue molds, garden statue molds, stone molds, cement crafts, GRC/GPR decorations, ect. The quality of our rtv silicone rubber is similar with Dow corning silicone, Wacker silicone, smooth on silicone, but the prices of our silicone rubber is more competitive than them. 2. Features of RTV silicone mold making rubber a. low viscosity b. easy operation c.long shelf life over 12 months d. high strength and low shrinkage e. curing at room temperature within 2-4hours f. high duplication times and no deformation 3. How to making stone mold with RTV silicone mold making rubber ?Mixing:Select a mixing container 4-5 times larger than the total volume of material to be mixed.Weigh out the selected silicon rubber and catalyst. Stir for several minutes scraping the sides and bottom of the container carefully to produce a homogeneous mixture. When using power mixers, avoid excessive speeds, which could entrap large amounts of air or cause overheating of the mixture, resulting in shorter pot life.The air entrapped in the mixing step needs to be removed to eliminate voids in the cure product. This can be done by exposing the material to a vacuum of 10-20 mbar. The material will expand, crest and reduce to about the original level. Degassing is usually complete about two minutes after frothing ceases. Curing: After mixing the two parts combination, the material will cure at room temperature. Selection of the Beta will determine cure speed, the work life as well as the demoulding time.The system is sensitive to changes in heat and humidity and therefore variations in cure speed may be seen if one or both variables are changed. Handling and Safety Material Safety Data Sheets are available upon request. SHELF LIFE: Twelve (12) months from date of shipment when stored at 24°C in original unopened packages. PACKAGE:Packed in clean 20kg/pail, 200kg/pail.
