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 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 palletStorage & Shelf life of Additon Cure SiliconeMC 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
White Two Part RTV2 Platinum Cure Silicone Rubber Good Flowability
