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MS1970FR

Flame-retardant sealant

MS1970FR is a one-component room temperature vulcanizing flame-retardant sealant based on silane modified polymers. It gradually hardens into a rubber-like elastomer after coming into contact with air and reacting with moisture in the air. The curing speed of the adhesive paste is related to the temperature and humidity of the environment; high temperature and high humidity accelerate curing, while low temperature and low humidity delay this process. Ultimately, the curing time is also related to the thickness of the adhesive paste.

Advantage

√ Low odor, low VOC, no organic solvents such as PVC, formaldehyde, toluene, etc., safe to use.
Excellent flame retardant performance, vertical combustion test up to V0 level.
After the surface is cured, the paint can be applied directly to the surface.
Good elasticity, low shrinkage, flexible adhesive layer after curing, and firm bonding with the substrate.
UV resistance, high temperature, excellent weather resistance, more than 20 years service life.
It can be used for the painting of suspension bridges, which meets the requirements of the technical conditions for anti-corrosion coating of the main cable system (JT/T 694-2007).

Typical Performance

Appearance of adhesiveColorWhite, gray, black
AppearancePaste-like body
Densityg/cm31.4~1.6
Anti-sagging propertyVertical sagging degree<1.0mm
Curing speedTouch dry time10~30min
1 day>3.0mm
7 days>7.0mm
HardnessShore A50~60A
Tensile stress-strainTensile strength (TS)>2.0MPa
100% tensile strength (M100)>1.0MPa
Elongation at break (EB)200~300%
Curing shrinkageShrinkage rate≤1.5%
Flame retardancyFlame retardant gradeFV-0
Temperature resistanceTemperature resistance after curing-40℃~90℃
Weather resistanceResistance to artificial light source accelerated aging test: 6 weeks under UV light.No significant changes on the surface, the colloid does not show discoloration, hardening, cracking, or other phenomena.

Main applications

MS1970FR can be dedicated to bridge surface protection, and is suitable for the elastic sealing of joints of various substrates, suitable for scraping, injection, caulking and surface sealing construction, and can also be prefabricated into adhesive tape

Typical Applications

It is mainly applied to the main cable system of bridges, such as the sealing coating of the ring joint and butt joint of the main cable of suspension bridges, and the sealing coating of the slot joint of the straddle type cable clamp, etc.
It is also used for waterproof sealing of various gaps in metal structures, fume hoods, ventilation ducts, warehouses, and prefabricated houses.
It is used for elastic sealing at welds and interface parts, and for anti-corrosion protection sealing of galvanized plates, rivets, bolts, etc.

Qualification

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