RTV-2 Liquid Silicone Rubber Platinum Cured Resin Crafts Moulding
Silicone
Product description
MCPLA-L20 A/B two-component addition cured silicone rubber Silicone Rubber is a two-part, platinum-catalyzed, liquid silicone
system that cures (RTV) to a flexible 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. Polymerization
occurs without formation of heat.
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.
#High Strength: RTV2 platinum cure silicone rubber has a high tear strength,
making it ideal for making complex molds that require multiple
demolding times.
#High Temperature Resistant: MCPLA-L20A/B is suitable for casting resin crafts with Temperature Resistant property.
What are the Applications of MCPLA-L20A/B RTV-2 platinum cured
silicone rubber
First: making many kinds of molds:
1.Low melt metals (mold life can be short), Cement,
Concert,concrete stones, wax molds, PU molds, resin molds, gypsum
casting, candle molding, chocolate , candy and any other food
product mold making, prototyping etc.
2.Making molds for food grade products: chocolate molds, cake
molds, sugar molds,ect.
3.Making molds for life casting: real hand molds, real feet molds,
prosthetics ect.
Technical Properties
| Item No. | MCPLA-L20A/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 (%) | 0.1 |
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.
About Us
MINGCHENG GROUP LIMITED with brand MC Silicone,established in 2011, is a professional manufacturer of silicone mould making and
casting materials based in Dongguan, China.
Our professional approach to all our work, together with creative
ideas and strong technical skills, enable us to produce high
quality, cost effective materials.
Our products include:
1.Condensation cure silicones for making molds for gypsum, concrete
and resin arts and crafts, candle soap and shoe mold,
2.Addition cure silicones for making molds for jewelry, rapid
prototype, food grade silicone for chocolates and cakes,life
casting silicone.
3.Addition cure silicone putty for equine hoof cushion making, resin crafts mold
making.
4.silicone potting compound for electronics encapsulating.
