Platinum Cured Silicone Liquid Rubber Food Molds Making Translucent
What is RTV-2 Platinum Cured Liquid Silicone Rubber
MCPLA-L Series Two-component addition type Silicone Rubber is two-part, platinum-catalyzed, liquid silicone system that cures (RTV) to Shore A rubber. The polymerization can be accelerated by heat. The silicone components are delivered as liquids,which once mixed and cured into translucent, elastic and resistant material with long library life.
Features of RTV-2 Platinum Cured Liquid Silicone Rubber
#Translucent color( Customized)
#Fast mixing (1:1) by Weight
#High tear and tensile strength
#Long shelf life with low shrinkage
#Easy processing due to the low viscosity
#Room temperature vulcanized
#Food safe,Non-toxic,odor-free
Technical Properties
| Item No. | MCPLA-L20 A/B |
| Appearance | Viscous liquid |
| Color | Translucent/skin tone |
| Viscosity ( cps,approx.) | 7000-9000 |
| Mix ratio (A:B) | 1:1 |
| Working time(at 25℃ ,minutes) | 30-40 |
| Curing time(at 25℃,hrs,approx.) | 6 |
| Hardness Shore A(after 24 h) | 20 |
| Tensile Strength(Mpa,after 24 h) | 3.5 |
| Elongation(%) | 550 |
| Tear Strength(N/mm) | 15 |
| Linear Shrinkage (%) | 0.01 |
Processing and Instructions of Addition Cure Silicones
1. Mixing the two components
According the mixing ration 1:1, weighing 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.
Packaging
20kg per drum, 200kg per drum
Storage and shelf life
MC Silicone MCPLA -L Series should be used within 12 months from the manufacturing date. Beyond this date, MC silicone no longer guarantees the products confirms with the sales Specification. In order to preserve best properties it is recommended to follow strictly the following guild lines:
Store the original packing tightly sealed and at a temperature below 30 degree Celsius.
Use the product as soon as the packaging has been opened.
MINGCHENG GROUP LIMITED is dedicated to manufacturing and R&D a wide variety of mold making and casting materials, such as RTV-2 liquid silicone mold rubbers, liquid polyurethane mold rubbers, electronic potting silicone compound, release agent and so on. These materials can be used for reproduction of any original model to cast PU resin, polyester resin, epoxy resin, concrete, plaster, wax, soap and all the other decorative mouldings.
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Platinum Cured Silicone Liquid Rubber Food Molds Making Translucent Images
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