White Two Part RTV2 Platinum Cure Silicone Rubber Good Flowability
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Good Flowability High Strength Low Shrinkage RTV-2 Liquid Platinum Cure Silicone Rubber For Making Cake Decorating Molds
Two-component addition type silicone rubber Silicone Rubber is a two-part, platinum-catalyzed, liquid silicone system that cures (RTV) to a Shore A20 rubber. The polymerization can be accelerated by heat. The silicone components are delivered as liquids, which once mixed and cured transform into a transparent, elastic and resistant material. Polymerization occurs without formation of heat.
Platinum cure silicone rubber, also called addition cure silicone, are two-component high tear strength and flexible mold or casting compounds. They are recommended as a mold material for casting polyurethane, epoxy, or polyester resins, wax and a wide range of other casting materials. They exhibit extremely low shrinkage and high physical properties. These rubbers are chemically sensitive to latex, sulfur, and certain other materials. Platinum cure silicone can also be used to cast prosthetics for special effects makeup and medical training devices.
Features Two-part platinum-cured (addition-cure) silicone rubbers
Applications Label manufacturing, Molding applications requiring low shrinkage e.g., jewelry, automotive, plaster, cement, cake decorations, etc.
Technical Properties
1. Mixing the two components According the mixing ration 10:1 or 1:1 weighting A and B, the two
components may be thoroughly mixed either by hand or using a
low-speed electric to minimize the degassing of bubbles and to
avoid any temperature increase. Note: It is also possible to use a
special mixing and dispensing machine for the silicone components,
further information is available upon request. 2. Moulding The mixture should be degassed preferably at 30 to 50 mbar to
eliminate any entrapped air. If a dispensing machine is used, the
two components are degassed separately prior to mixing. The
silicone mixture expands to 3-4 times of its initial volume and
bubbles rise to the surface. The bubbles progressively disappear
and the mixture returns to its initial volume after 5 to 10
minutes. Wait a few minutes to complete the degassing and then
flash the vacuum. The silicone is ready for pouring, either by
gravity or under low pressure. Note: Flashing the vacuum once or twice accelerates the degassing.
It is recommended to use a container with a high diameter/height
ratio (3 to 4 times of the initial volume) 3. Polymerisation The curing may be slowed down at lower temperature or accelerated
by applying heat. Note: Contamination from sulfur (e.g., sulfur-based clay), amines, tin
compounds, cured polyester resin, some paints and some silicone
rubbers may inhibit surface cure of platinum-cured rubbers. Apply a release agent, Although not usually necessary, a release agent will make demolding easier when casting into most surfaces. NOTE ON CURE INHIBITION: Sulfur/tin/amine-contaminated materials
and tools will cause cure inhibition in platinum-cured silicone
rubbers, which means that the rubber that is in contact with the
contaminated surface will remain gummy or uncured. Make sure to
test cure the rubber on your surface before full-scale application.
Use a polyurethane or tin-cured silicone rubber if you know that
you’ll be working with any of these inhibitors. Packaging 20kg per drum, 200kg per drum
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| Product Tags: White Platinum Cure Silicone Rubber 8000cps Platinum Cure Silicone Rubber RTV2 White Cure Silicone Rubber | ||||||||||||||||||||||||||||||||||||
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