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MC Silicone Professional Mould Making & Casting Materials Supplier
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|Hardness:||25 Shore A||Working Time:||45 Mins|
|Method Of Molding:||Pourable Silicone||Tear Strength:||4MPA|
28N/mm Platinum Cure Silicone,
4MPA Platinum Cure Silicone Rubber,
28N/mm tin cure silicone
Good Flowability Fast Curing Low Shrinkage RTV-2 A B Liquid Platinum Cure Silicone Rubber For Making Candle Soap Molds
|Model#||Mix ratio||Pot life||Curing time|
Processing and recommendations
Preparation...Safety - Use in a properly ventilated area (“room size” ventilation). Wear safety glasses, long sleeves and
rubber gloves to minimize contamination risk. Wear vinyl gloves only. Latex gloves will inhibit the cure of the rubber. Store and
use material at room temperature (73°F/23°C). Warmer temperatures will drastically reduce working time and cure time. Storing
material at warmer temperatures will also reduce the usable shelf life of unused material. Mixing containers should have straight
sides and a flat bottom. Mixing sticks should be flat and stiff with defined edges for scraping the sides and bottom of your mixing
container. These products have a limited shelf life and should be used as soon as possible.
Cure Inhibition - Addition cured silicone rubber may be inhibited by certain contaminants in or on the pattern to be molded
resulting in tackiness at the pattern interface or a total lack of cure throughout the mold. Latex, sulfur clays, certain wood surfaces,
newly cast polyester, epoxy, tin cure silicone rubber or urethane rubber may cause inhibition. If compatibility between the rubber
and the surface is a concern, a small-scale test is recommended. Apply a small amount of rubber onto a non-critical area of the
pattern. Inhibition has occurred if the rubber is gummy or uncured after the recommended cure time has passed. To prevent
inhibition, one or more coatings of a clear acrylic lacquer applied to the model surface is usually effective. Allow any sealer to
thoroughly dry before applying rubber.
NOTE: Even with a sealer, platinum cure silicones will not cure against surfaces containing sulfur. If you are not sure if your clay
contains sulfur, do a small compatibility test before using for an important project.
Applying A Release Agent - Although not usually necessary, a release agent will make demolding easier when casting into
Tips of Mold Performance & Storage
The physical life of the mold depends on how you use it (materials cast, frequency, etc.). Casting abrasive materials such as concrete can quickly erode mold detail, while casting non-abrasive materials (wax) will not affect mold detail. Before storing, the mold should be cleaned with a soap solution and wiped fully dry. Two part (or more) molds should be assembled. Molds should be stored on a level surface in a cool, dry environment.
Contact Person: Mrs. Amy Tse