Introduction of RTV Silicone Rubber for Concrete Mold Making
RTV Silicone Rubber for concrete mold making is a kind of
two-component material, that is the moldmaking silicone rubber is
made up of Part A base silicone and Part B CA30 curing agent. The
mixed Part A base silicone and Part B curing agent can cure at room
temperature by a condensation reaction,and the become a siliconer
rubber mold that can be used for objects reproduction.These RTV-2
silicone rubber molds can be cast into different material for your
target objects.The pouring material can be plaster, polyurethane,
PU, GRC, cement, resin, polyester, wax etc...
Specifications of MC RTV-2 Silicone Rubber
Equiped with REACH certificate
Professional technician with rich experience
4% catalyst is offered for free of charge
Silicone range:10-60 shore A
High duplicating silicone molds
Applications of RTV Silicone Rubber for Concrete Mold Making
RTV Silicone Rubber for concrete mold making is suited for
reproduction of cement molding, concrete stones, artificial stones,
plaster molding, figures, art objects, decoration molding, GRC
products, gypsum products, resin products, PU molds. etc
Instructions for Making Concrete Silicone Molds
1. Make sure the surface of the original is clean and free of loose
material.
2. Weight 100 Part A base and 2 parts of CA30 Curing Agent in a
clean container.
3. Stir Part A base silicone before use thoroughly , as filler
separation may occur upon prolonged storage.
4. Mix Part A and Part B evenly until the CA30 completely dispersed
in the base.
5. Pour the mixed Part A base silicone and CA-30 curing agent as
soon as possible onto the original
6. De-mold after 24 hours ,it is will improve the replicate times
of silicone mold.
Note:It is strongly recommended that entrapped air be removed in a
vacuum chamber, allowing the mix to completely expand and then
collapse. After a further 1-2 mins under vacuum, the mix should be
inspected and can be used if free of air bubbles. A volume increase
of 3-5 times will occur on vacuum de-airing the mixture. So a
suitably large container should be chosen.
Shortage of RTV Silicone Rubber for Concrete Mold Making
When the RTV silicone rubber for concrete mold making is stored at
or below 30 °C(85 °F) in the original unopened containers, RTV2
Silicone Base and CA30 Curing agent have a usable life of 12 months
from the date of production. After 12 months,please use a stirring
mill to stir the Part A silicone for some minutes, then the
silicone can be use again, no influence for other performance.
FAQ of RTV-2 Silicone Rubber for Mold Making
Why does the RTV liquid silicone rubber for molding have few mold
making times?
The silicone rubber mold has few molding times is due to follwoing
reasons: adding too much silicone oil which will destroy the
molecular of silicone rubber; making the mold for small and fine
detailed products with higher hardness silicone rubber which is
easy to break; making the mold for large products with soft
silicone rubber which will reduce the tensile and tear strength of
the mold, and the mold will have deformation. Thus, we should take
the proper silicone rubber to make the mold for suitable products.
