1. Description:
Flexibond 8204 is a two-component polyurethane adhesive which iswidely applied to manufacture heat-insulation and decorationintegrated plate, ceiling board and metal partition of cleanrooms.
It is suitable for various substrates, such as galvanized sheets,calcium silicate board, glass magnesium board, rook wool, PU foam,expanded polystyrene foam board, extruded polystyrene foam board,phenolic board, etc. The volume of adhesive will be expanded duringthe curing process.

2. Characteristics:
(1) Excellent adhesion to various substrates.
(2) Cures fast, shortens heat or cold setting time.
(3) Foam percentage 50-100%, benefits to fill cracks between thesubstrates.
(4) Solvent free, environmental friendly.
(5) Good humidity and heat resistance.

3. Application
(1)Preparation:
Prepare a clean and dry drum for mixing the adhesive.
Mixing tool: Sticks for manual mixing or electric mixer.
Electronic scale: It would be better if the electronic scale canaccurately weight to one decimal.
(2)Substrates Surface Treatment:
The substrates should be clean and dry and of no grease, dust, orother contaminations. The substrates can be cleaned by alcohol oracetone. If the metal surface is coated with primer, or the surfaceis polished, the adhesion can be improved significantly.
(3)Flexibond 8204/Flexibond 8200=4: 1
The resin (8204) should be uniformly stirred before it is mixedwith the hardener (8200). Mix the two components uniformly. Mix for1-2 more minutes after the two components color is well mixed. Useup the mixer as soon as possible before its pot life, or lessfrequent principle can be taken.
(4)Adhesive Coating:
The adhesive can be coated with spreading machine, rollers orserrated scrapers manually. The adhesive should be coated uniformlyon the substrate surface. The recommended dosage is 200-400G/M2.The dosage varies with the roughness of the substrate surface.
The adhesive should be coated within its pot life.
(5)Pressing:
Substrates have been coated with adhesive should be pressed withinopen time, or the adhesion strength will be affected. Raise thecompounding pressure as high as possible without affecting thematerial forming.
(6)Pressing time
The curing speed and the time to form adhesion vary with thetemperature. The curing speed is slower and it takes longer timefor pressing as the temperature is lower; The curing speed isfaster and it takes shorter time for pressing as the temperature ishigher. The pressing time is 4 hours under 23.
(7) Working Condition
Recommended working condition: Temperature 5-30, relativehumidity
(8) Clean
Recommended Cleaner: Acetone, butanone.

4. Packaging
Resin: 24kg/drum, 1000kg/drum
Hardener: 6kg/drum, 250kg/drum
The packaging can be adjusted according to customer'srequirement.