Description
RTV
Liquid Silicon Rubber
Series
RTV*2 Room temperature
silicone rubberModel:
HY***5
Usage:
Silicon rubber for PU/poly resin, unsaturated resin, plaster,
candles and gypsums crafts, toys, soap, statuary ,casting molds
making,etc.
|
Model
|
**5#
|
|
Appearance
|
white
|
|
Mixing proportion of
curing agent (%)
|
4%
|
|
Operating time (mins *5 0C
)
|
****0
|
|
Curing
time(hours*5
0C)
|
**8
|
|
Hardness
(A°)
|
*5
|
|
Density ( g/cm
3)
|
1.*8
|
|
Viscosity (mPas
-*5
0C)
|
***0
|
|
Tensile-strength(kgf
/cm2)
|
≥*8
|
|
Tear-strength (kgf
/cm)
|
≥*8
|
|
Elongation-break(%)
|
≥
**3
|
USERS
INSTRUCTION:
RTV—TWO
molding
silicone rubber (silicon) and silicon are generally named as
two-part room temperature sulfurated silicone rubber, which
features an exceptional fluidity and good
operability?When
mixed with 3??5?curing
agent, they can still be operated within *0 minutes,but will be
formed after **3 hours?With
resistance to deformation, high temperature, acid and alkali, and
expansion, silicon flexible molds are used for mold duplication and
delicate mold making for poli crafts, resin crafts lighting and
candle crafts.
This product
is a white or red flowable liquid with a hardness of *2—*0A° when
cured. If large products and therefore multiple-piece molds are
needed by customers, silicone rubber with higher hardness will be
required for the molds. Conversely, soft silicon is indispensable
for molds with complicated pattern and delicate details. The amount
of curing agent admixture depends on the actual need of customers.
More will be added for speedy drying and fast release and less when
otherwise.
(Note?we
do not recommend silicon oil. For special soft mold or molds with
complex pattern or fine details, 5??*0?silicon
oil can be added to condition the flexibility of the mold for
convenience of release)
TECHNICAL
GUIDELINES:
1. Stir
the base (Part A) well beofre use (except when depending on machine
).
2. Shake
the catalyst container (Part B) well before use.
3. This
is a **0 Part A to 2 Part B mixing ratio by weight.Weigh the desire
amount of base into a clean mixing container.
4. Weight
the proper amount of catalyst into the container. Mix the base and
catalyst together by stirring with a stick until a uniform color is
obtained. Scrape the container walls and bottom well to insure a
thorough mix.
5. Though
it is often unnecessary to deair the material due to its low
viscosity some may choose to do so. If so,place the container into
a vacuum chamber and evacuate the entrapped air from the mixture
using a vacuum pump capable of achieving *9 inches of mercury
vacuum.The mixture will rise, crest and then collapse in the
contanier. Interruption(bumping) of the vacuum may be necessary to
prevent overflowing the container. Keep the mixture under full
vacuum for **3 minutes.
6. Bleed
air slowly into the vacuum chamber. When the chamber is at
atmospheric equiplibrium,remove the cover plate and take out the
container.
7. Pour
the deaired material slowly in a steady stream from one end of the
mould so that the material flows evenly over the pattern. This
should minimize emtrapment of air bubbles under the flowing
material. A”ready”mold may be poured firstly over the pattern,
which will also help reduce the possibility of entrapping air on
the pattern and in the cured rubber.A mold release agent may be
applied on the pattern first to improve release.
8. Allow
the rubber to cure for **4 hours at *4C before removing the cured
rubber mold from the pattern. Heat acceleration not recommended
with this product.
9. For
best results, allow the mold to air cure an additional *4 hours
before using it in production.
SHELF
LIFE:
Twelve(*2) months from date
of shipment when stored at *50Cin the original sealed
packages.
PACKAGE:
Packed in
clean *5kg/pail, **0kg/pail.
FIRST
AID:
Inhalation:Remove
source(s) of contamination and move victim to fresh air. Contact
physician immediately.
Eye
Contact:Flush eyes
with plenty of water. If irritation persists, seek medical
attention.
Skin
Contact:In case of
skin contact, wash thoroughly with soap and water; remove
contaminated clothing and launder before reuse; seek medical
attention if rash develops.
Ingestion:Do
not indeuce vomiting unless instructed by a physician.Contact
physicain immediatedly.
After first
aid, get appropriate in-plant,paramedic,or community medical
support.
Any questions, pls feel free to contact mandy he
