Product Description
MCPLA-H40 RTV2 platinum cure silicone rubber is two component which cross-linking at room temperature into elastomer.The polymerization can be accelerated by heat (max.150 C). The silicone components are delivered as liquids, which once mixed and cured transform into transparent, elastic and resistant material.
Product Features of Addition Cure Silicone
#Excellent transparency to accurately see the object in the mold, ideal for cut molds or two- part silicone tools
#Exceptional mechanical properties including outstanding tear resistance
#High chemical resistance to artificial resins (PU, Epoxy, PES)
#Accurate reproduction of details and easy mold release
#No shrinkage when cured means accurate mold and part dimensions
Applications of Addition Cure Silicone:
Label manufacturing,Molding applications requiring low shrinkage.jewelry,automotive,rapid prototyping etc.
Product Parameters
| Item No. |
MCPLA-H40A/B |
| Color |
Transparent clear |
| Viscosity ( cps,approx.) |
45000~50000 |
| Mix ratio (A:B) |
10 : 1 |
| Working time(at 25ºC ,minutes) |
80~90(can be adjusted) |
| Curing time(at 25ºC,hrs,approx.) |
24 (can be adjusted) |
| Hardness Shore A(after 24 h) |
40 |
| Tensile Strength(Mpa,after 24 h) |
4.8~5.0 |
| Elongation(%) |
350 |
| Tear Strength(N/mm) |
16~17 |
| Linear Shrinkage (%) |
≤0. 1 |
Installation Instructions
Instructions for Prototyping Transparent Liquid Silicone Rubber
1. Mixing the two components
According the mixing ratio 10: 1 weighting part A and B, the two components may be thoroughly mixed either by hand or using a low speed electric to minimize the entrance of air and to avoid any temperature increase.
Note: It is also possible to use a special mixing and dispensing machine for the two silicone components, further information is available upon request.
2. Molding
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 to 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. Polymerization
The curing may be slowed down at lower temperature or accelerated by applying heat.
Note: In general contact with certain materials can inhibit the cross linking of RTV.
Natural rubbers vulcanized with sulfur
RTV elastomeric is catalyzed with metal salts, e. G. Tin compounds
PVC stabilized with tin salts and additives
Epoxy catalyzed with amines
Certain organic solvents, such as Ketones, alcohols, ether etc.
In case of doubt, it is recommended to test the substrate by applying a small quantity of the mixed silicone on a restricted area.
Packaging & Shipping
Packaging & Shipping of Addition Cure Silicone
20kg/drum: 400kgA+ 40kgB or 520kgA+52kgB per pallet
Storage & Shelf life of Additon Cure Silicone
MC Silicone Addition Cure Silicone, Platinum Cure RTV Silicone 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:
1.Store the original packing tightly sealed and at a temperature below 30 degree celcius.
2. Use the product as soon as the packaging has been opened.
Company Information
We are manufacturer, and specialized in manufacturing different hardness, different viscosity silicone rubber series, we are competitive in price with good quality.
Any futher questions,please feel free to contact nicole
MINGCHENG GROUP LIMITED
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