RTV-2 Tin Cure Liquid Silicone Rubber For Lead-zinc Alloy Mold
Making
Product Description
Silicone rubber MCSIL-2060 is a two-component material, consisting
of Part A base silicone and Part B MCSIL-CA30, cures at room
temperature by a condensation reaction.
Application
It is specially designed for lead-zinc alloy mold making. It also
can be suited for reproduction of big size cement/concrete
elements, , resin tools molds, etc.
Technical Data
Item No. | Properties before curing | Curing |
| Part A | Part B | Part A+ Part B | Pot life at 250C | De-molding Time at 25℃ |
| Appearance | Appearance | Ratio | Viscosity |
| MCSIL-2060 | White | Clear | 100:3 | 26000-28000 cps | 30 mins | 4-6 hours |
| Properties after curing 24 hours |
Hardness Shore A | Tear strength | Tensile Strength | Elongation break (%) | Linear Shrinkage |
| 60 | 10 N/mm | 4.8 Mpa | 150 | ≤0.3% |
FEATURES
- Good flow ability
- High temperature resistance
- High tear strength
- Easy de-mould
- Acid and alkali-resistance
- Long shelf life
Mixing
Please weight 100 Part A base and 2 parts of B the Curing Agent in
a clean container. Thoroughly stir Part A base silicone before use,
as filler separation may occur upon prolonged storage. Mixing Part
A and Part B evenly until the CA30 completely dispersed in the
base. Hand or mechanical mixing can be used, but do not for an
extended period of time or allow the temperature to exceed 35C
(95F). Mix suitably small quantities to ensure thorough mixing of
base and curing agent.
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 minutes 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.
Package:
Part A base silicone: 20kg,25kg/drum or 200kg/drum
Part B CA30 Curing Agent: 800g/bottle, 1kg/bottle
Storage and Precautions of silicone liquid rubber:
RTV-2 silicone rubber for making art crafts, which is an
environmentally-friendly liquid silicone product, is not easy to
burn and can be stored and transported as non-hazardous goods. The
shelf life of the product is about one year from the date of
production. Inspection is required when exceeding the time limited.
It can continue to be used in case of neither thickening nor
deterioration.
Why does the silicone rubber mold have few molding 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.
If you have any question, welcome to contact us for further
discussion.
