INTRODUCTION
MF-881 is a two parts component, room temperature
cured, high elasticity and high modulus silicone
sealant with curing time adjustable. The sealant
has excellent adhesion to most building materials
without priming paints and it has outstanding
resistance performance to air aging.
CHARACTERISTIC
- High elasticity and high modulus.
- Outstanding resistance to high and low temperature
and air aging.
- Neutral cured, no corrosion to the surface.
- Excellent adhesion to most building materials.
- Movement capability: ±12.5%
- No pollution to environment.
APPLICATION
MF-881 is mainly applied for hidden-frame curtain
walls and total glazing. It could also be used
for the assembly and sealing of the glass. It
is remarkable resistance to the pressure of
blast on transportation such as car and ship,
etc.
NOTES
1. Testing should be carried out for compatibility
and adhesive property of project materials before
application.
2. Part B should not be long-term exposure to
air or it will react with water moisture.
3. In case of contact with eyes, rinse immediately
with plenty of water.
4. Avoid long-term contacting with skins.
5. Avoid contaminating food, medicine or cosmetics,
etc
APPLICATION METHODS
Surface Cleaning
Surfaces where silicon shall be applied must
be cleaned, dried and free of grease. Masking
tape should be used to avoid contamination and
they shall be removed after sealing.
Cleaning Skill
Used with neat cloth with lint-free, or cleaned,
white and lint-free cotton cloths.
Used with solvents such as allotropic-propanol,
butanone or dimethyl benzene, etc.
Apply “two-cloth” cleaning.
1. Use a white clean lint-free cloth dipped
in the solvents to wipe the areas to be attached.
2. Use the second one to wipe off the remained
cleaning solvents on surface before volatilization.
3. The surface is often injected within an hour
after wash in case of twice contamination. The
surface (washed already), with which sealant
is not applied in time, should be cleaned again
before application.
4. Solvents should be poured out from the container
while dipping solvents, but the cloth should
not be put in the container to soak in case
of contamination. The cloth should be changed
in time.
5. No burning in the area using solvents. Keep
good ventilation.
Mixing
MF-881 should be mixed in the sealing mixing
equipment at the weight ratio of 12:1 (Part
A: Part B). The ratio could be changed between
11:1 and 14:1 to adjust the curing time.
Restriction
Apply the sealant according to <The Application
Standard of Silicone Structural Sealant>.
It is inapplicable under following circumstances.
- Any building materials with exudation of
grease, plasticizer or solvent, etc
- Vulcanized or semi-vulcanized rubber.
- Those areas where other sealants are applied.
- The joint which undertake structural intensity,
suffering excessive rub or physical destroy.
- Frosted or humid surface.
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