Rtv-2 Platinum Cure Silicone Liquid Rubber Life Casting Silicone
Food Safe Addition Type
| Item No. | MCPLA-L20A/B |
| Appearance | Viscous liquid |
| Color | Translucent |
| Viscosity ( cps,approx.) | 7000-9000 |
| Mix ratio (A:B) | 100:100 |
| Working time(at 25℃ ,minutes) | 30~40 |
| Curing time(at 25℃,hrs,approx.) | 4~6 |
| Hardness Shore A(after 24 h) | 20 |
| Tensile Strength(Mpa,after 24 h) | 4.2 |
| Elongation(%) | 550 |
| Tear Strength(N/mm) | 17 |
| Linear Shrinkage (%) | 0.1 |
Rtv-2 Platinum Cure Silicone Liquid Rubber Life Casting Silicone
Food Safe
MCPLA-L20A/B RTV2 platinum cured liquid silicone rubber is a
two-part, high-performance elastomer that is used for mold making,
casting, and other industrial applications. It is called "platinum
cured" because it uses a platinum catalyst to initiate the curing
process, which results in a higher quality and more durable end
product.
Applications of Platinum Cured Liquid Silicone Rubber Resin Mold Making
1.mold making for various materials
polyurethane and other reactive resins
Small pieces of cement,plaster,gypsum,concrete products.
Food like chocolate,fondants,desserts
Wax,candle,soap;
Low melt metal
2.casting body parts,artificial skin,shoe insole.
Features of RTV2 Translucent Platinum Cured Liquid Silicone Rubber
-Totally non-toxic, odorless, harmless, and eco-friendly
- High elasticity; good tensile strength and tear strength
- Very suitable hardness
- Low shrinkage less than 0.1%
- Good flexibility, permeability and easy operation
- Excellent UV-irradiation resistance and aging resistance
Processing and Instructions of Addition Cured Liquid Silicones
Rubber
Step 1
The ideal working temperature is around a constant 25°C. Best
results can be obtained at constant temperatures between 21°C and
26°C, in a clean, dry, dust-free environment. Avoid working in high
humidity.
Step 2
Measure product in accordance with your intended use. Prepare 1
part A to 1 part B by weight and pour into a clean, smooth-sided
container large enough to hold all the liquid and allow room for
mixing.
Step 3
The material must be mixed thoroughly for at least 5 minutes. make
sure to scrape the container sides, bottom, and corners as you mix.
Be careful not to whip excessive air into the mixture.
Step 4
Prepare a container(not silicone material),add the item and keep
them face up.
Pour the mixed silicone onto the container and distribute evenly to
cover the top of the item by at least 6-7mm
Step 5
Adjust the position and then let it cure, the bubbles will melt
gradually.
Step 6
Pull the item out of the mold
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.
Storage and shelf life of Addition Cured Liquid Silicones Rubber
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.
Packaging of Addition Cured Liquid Silicones Rubber
20kg/drum: 24 drums (480kg) or 32 drums(640kg) per pallet
200kg/drum or 220kg/drum: 4 drums per pallet
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.
Q1: Why the curing time of platinum silicone varies in environment
with different temperature ?
Platinum (addition) cured silicone rubber,Which with platinum
catalyst and uses heat to transform from liquid to solid rubber. Therefore, platinum cured
silicone rubber is sensitive to temperature, platinum systems are often cured quickly
with heat, although they can also be formulated to cure at low temperatures
and room temperature.
Q2:why the bottom and sides of platinum silicone molds are still
gummy?
platinum silicone rubber requires accurate and careful mixing. The
material must be mixed thoroughly for at least 3~5 minutes. make sure to scrape the
container sides, bottom, and corners as you mix.
Q3: Why the platinum silicone rubber do not cure?
Platinum-cure silicone rubbers are critically sensitive to some
materials and will not cure under any circumstances when exposed. like the materials
below:
#Natural rubbers vulcanized with sulfur
#RTV elastomer is catalyzed with metal salts, e. G. Tin compounds
#Epoxy catalyzed with amines
#Certain organic solvents, such as Ketones, alcohols, etc.
Q4: Is platinum silicone food safe?
yes! It's safe to contact Food and skin, which is suitable for
making food molds and making Prosthetics .
