Translucent platinum cured silicone rubber RTV-2 liquid silicone rubber for food molds making
Product description
MC Silicone MCPLA Addition Cure Series is a two component elastomeric cross-linking at room temperature. The polymerization can be accelerated by heat (max.1500 C). 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.
Features
Good flowability
High tear and tensile strength
Long shelf life with low shrinkage
Fast mixing (1:1)
Easy processing due to the low viscosity
Applications
Label manufacturing, Molding applications requiring low shrinkage e.g., jewelry, automotive, plaster, cement decorations, toys and dolls, etc.
Technical Properties
| Item No. | MCPLA-L20A/B |
| Appearance | Viscous liquid |
| Color | Translucent |
| 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) | 4.5-4.8 |
| Elongation(%) | 550 |
| Tear Strength(N/mm) | 18-20 |
| Linear Shrinkage (%) | 0.1
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What are the Advantages of MCPLA-L20A/B RTV-2 platinum cured silicone rubber
#Easy to Operate : Due to the Room Temperature Cured feature and Low Viscosity, It's easy to use platinum liquid silicone rubber for your DIY Projects at home. No need for vacuum Pumping .
#High Tear Strength: RTV2 platinum cure silicone rubber has a high tear strength, making it ideal for making complex molds that require multiple demolding cycles.
#Easy Release: RTV2 platinum cure silicone rubber has excellent release properties, which means that the mold or casting can be easily removed from the mold without causing damage to the final product.
Processing and Instructions of Addition Cure Silicones
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.
Packaging
20kg per drum, 200kg per drum
Storage and shelf life
MC Silicone MCPLA -H 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.
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Translucent platinum cured silicone rubber RTV-2 liquid silicone rubber for food molds making Images
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