Product Details
Transparent Platinum Cure Silicone Rubber For Rapid Prototype Parts
Mold Making
Product description
Platinum cure silicone rubber also known as addition cureRTV
silicone rubber. In a platinum-based silicone cure system, also
called an addition system (because the key reaction-building
polymer is an addition reaction), a hydride- and a vinyl-functional
siloxane polymer react in the presence of a platinum complex
catalyst, creating an ethyl bridge between the two.The reaction has
no byproducts. Such silicone rubbers cure quickly, though the rate
of or even ability to cure is easily inhibited in the presence of
elemental tin, sulfur, and many amine compounds.
Features
High Transparency
High tear and tensile strength
Long shelf life with low shrinkage
Fast mixing (10:1)
Easy processing due to the low viscosity
Applications
Label manufacturing, Molding applications requiring low shrinkage
e.g. toys, jewelry, automotive, rapid prototyping etc.
Technical Properties
Item No. | MCPLA-H40A | MCPLA-H40B |
Appearance | Viscous liquid | liquid |
Color | Transparent | clear |
Viscosity(at 25℃ ,mPa.s,approx.) | 45000-50000 |
Specific Gravity(g/cm3,approx.) | 1.08 |
Proportion(A:B) | 10:1 |
Max working time(at 25℃ ,minutes) | 60 |
Demoulding time(at 25,hrs,approx.) | 24 |
Hardness Shore A(after 24 h) | 40 |
Tensile Strength(Mpa,after 24 h) | 5.8 |
Elongation(%) | 350 |
Tear Strength(N/mm) | 27 |
The silicone mold making process is as follows:
- Obtain or make the master pattern: The master is a positive original of the parts you will make with
the silicone mold. This can be an existing solid object or a new
item made with manufacturing equipment. (See next section.) For
best results, the master should not contain complex cavities or
overhangs.
- Lay the pattern(s) in the container: In many cases, a container is made specifically for the pattern.
The box container can be made from e.g. wood or cardboard. After
applying mold release to the inside of the container, place the
patterns flat side down in the container or suspend them within the
newly made container. If you have multiple patterns (for making a
popsicle tray, for example), spread them out evenly. Spray them
with mold release. If you are making a two-part mold, half of the container should be
filled with clay and the patterns inserted half-way into the clay.
- Mix and pour the silicone: Mix the two silicone components according to the instructions on
the bottle, then pour it slowly into the container. The surface
level should rise half an in inch above the top of the master
pattern to prevent the mold from tearing. Curing can take several
hours (specific times may be specified on the silicone bottle). For
professional applications at 3ERP, we remove air bubbles, then cure
the silicone mold in an oven at a medium temperature.
- Remove the cured mold: Once it has fully cured, the silicone mold can be gently removed
from the container. If you are making a two-part mold, you should remove the clay,
leaving just the mold with the pattern still half sticking out.
Return the mold to the container the other way up, so the pattern
is protruding upwards. Apply mold release to the mold and pattern,
then fill the other half of the container with silicone like in
Step 3, wait for curing, then remove.
- Remove the master pattern from the mold: Gently remove the master pattern(s) from the silicone mold. If you are making a two-part mold, you will first have to separate
the two halves of the mold.
- Cast the parts: Depending on your casting material, casting your parts may be as
simple as applying for mold release then pouring liquid into the
mold. Professional processes like vacuum casting involve inserting
the silicone mold into a machine that removes air bubbles from the
casting material.
ecial containers are available are on request.
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.
Company Profile
Mingcheng Group Limited was established in 2010 based in
Dongguan,China, with brand MC Silicone for overseas market,
dedicated to manufacturing and R&D of mold making and casting
materials.
Our professional approach to all our work, together with creative
ideas and strong technical skills, enable us to produce high
quality, cost effective materials. We pride ourselves on the
different types of mould making materials we offer.
Why Choose Us?
Our Advantages
More than 20 years experience in moldmaking & casting industry
10 years exporting experience
Benefits of MC Silicone
1- A Technology Team: R&D Support
2- A Factory: customize for you in every possible aspect
3- A Sales Team: assist you develop more markets
4- Fast Delivery time about 3-5 working days per order
5- Professional Sales Service, 12-24 hours response
6- Various Payment Method
If you're looking for a good silicone supplier, you've come to the
right place. Our unique vision and mission drives us bring the best
products and service to each of our clients. We gonna be your guide
in silicone industry, we are your partner. Welcome to Join us.