INTRODUCTION
MF-899 is a one component, neutral cured, high
elasticity and high modulus silicone sealant.
The sealant has excellent adhesion strength
with outstanding weatherproofing ability.
CHARACTERISTIC
- High elasticity and high modulus.
- Neutral cured, no corrosion to the surface.
- Excellent resistance to air aging.
- Movement capability: ±12.5%
- Excellent adhesion to most building materials,
particularly to glass and aluminum. No priming
paint is required.
- No pollution to environment.
APPLICATION
MF-899 is mainly applied for structural assembly
of hidden-frame curtain walls and total glazing.
It could also be used for waterproofing and
weatherproofing sealing for automobiles and
ships, etc.
NOTES
1. Testing should be carried out for compatibility
and adhesive property of project materials before
application.
2. In case of contact with eyes, rinse immediately
with plenty of water.
3. Avoid long-term contacting with skins.
4. 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.
Sealant injection
The silicon is injected manually or by pneumatic
injecting gun at above 10℃ along one direction.
The joints-filling should be fully filled with
sealant. Masking tapes should be used to avoid
contamination and they shall be removed after
sealing.
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.
- Those regions where are closed and are cut
off the air.
- Frosted or humid surface.
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