Flexibond 8205hv/8200 Solvent Free 2K-PU Sandwich Panel Adhesive

• Bonding Function: Structural Adhesive
• Morphology: Black Paste
• Application: Construction
• Material: Polyurethane
• Classification: Room Curing
• Main Agent Composition: Polyurethane Prepolymer
• Model NO.: Flexibond 8205HV/8200
• Characteristic: High Viscosity, High Shear Strength, Fast Cure
• Promoter Composition: Complexing Agent
• Composition: Organic Material
• Color: Black
• Density: 1.20±0.05 Kg/L
• Cure Mechanism: Moisture-Curing
• Non-Sag Properties: Good
• Shore a Hardness: ~ 60
• Shear Strength: ≥ 5 N/mm^2
• Tensile Strength: ≥ 8 N/mm^2
• Elongation at Break: ≥ 400%
• Tear Strength: ≥ 10 N/mm
• Tack-Free Time (23 ºC , 50% Rh): 20~40 Min
• Rate of Cure (23 ºC, 50% Rh): ≥ 3.5 mm/24hrs
• Transport Package: 25kg/Barrel 1250kg/Pail
• Specification: SGS
• Trademark: Flexibond
• Origin: China
• HS Code: 3506100090
• Production Capacity: 72000000PCS/Year

Product Description

Description:
Flexibond 8205HV is a two-component thixtropic polyurethane adhesive which is suitable to bond wood, fiberglass panel, aluminum panel, steel panel, polyurethane sandwich panel, polystyrene foam panel. The adhesive is suitable for vertical bonding which requires high thixotropy.The product is solvent free, environmental friendly


Advantages:
(1) Excellent adhesion to various substrates without bubble
(2) Fast curing, shortens pressing time
(3) Good thixotropy, non sagging
(4) No irritant gas forming
(5) Resistant to heat and humidity, weather resistant

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 can accurately weight to one decimal.

(2)Substrates Surface Treatment:The substrates should be clean and dry and of no grease, dust, or other contamination. The substrates can be cleaned by alcohol or acetone. If the metal surface is coated with primer, or the surface is polished, the adhesion can be improved significantly.

(3)Flexibond 8205HV/Flexibond 8200=5:1 (By weight)The resin (8205HV) should be uniformly stirred before it is mixed with the hardener (8200). Mix the two components uniformly. Mix for 1-2 more minutes after the two components color is well mixed. Use up the mixer as soon as possible before its pot life, or less frequent principle can be taken.

(4)Adhesive Coating:The adhesive can be coated with spreading machine, rollers or serrated scrapers manually. The adhesive should be coated uniformly on the substrate surface. The recommended dosage is 300-600g/m². The dosage varies with the roughness of the substrate surface.
The adhesive should be coated within its pot life. The specifications can be referred to Figure 1.

(5)Pressing: Substrates have been coated with adhesive should be pressed within open time, or the adhesion strength will be affected. Raise the compounding pressure as high as possible without affecting the material forming. The specifications can be referred to Figure 1

                                 

(6)Pressing time

The curing speed and the time to form adhesion vary with the temperature. The curing speed is slower and it takes longer time for pressing as the temperature is lower; the curing speed is faster and it takes shorter time for pressing as the temperature is higher. The pressing time is 4-7 hours under 23°C. Fully cured in 7days. The specifications can be referred to Figure 2.

At 23°C, if to shorten the pressing time, besides to increase the temperature, could also by adding the hardener ration, the specification can be referred to Figure 3 and Figure 4

         Figure 3                                         Figure 4

(7)Working Condition
Recommended working condition: temperature 5-30°C, relative humidity <80°C. The curing speed will be affected if the temperature is too low. And too much bubble will be formed if the humidity it too high.
(8)Clean : Recommended Cleaner: acetone, butanone.


Technical Data Sheet of Surtek  8205HV/8207:

Item	Component A(Resin)	Component B(Hardener)
Curing mechanism	Poly addition
Chemical base	Multiplehydroxyl compound	PAPI
Color	White	Brown
The color after mixing	Light yellow
Density (before curing)	1.55g/ cm^3	1.2g/ cm^3
Viscosity	1000000-1500000mpa.s         (Brookfield - RVT 7/20)	200-300mpa.s        (Brookfield - RVT 2/20)
Viscosity (after mixing)	50000-100000mpa.s (Brookfield-RVT7/20)
Mixing ratio (by weight)	100	20
Pot life (23°C)	40-60mins
Open time (23°C, 50%RH)	70-90mins
Hardness shore D  (GB/T 531-2008)	≥70
Shear strength (GB/T 7124-2008)	≥10Mpa (Aluminum alloy)
Aging property (JGT 334-2012)	Shear strength at high low temperature cycles test	≥10Mpa (Aluminum alloy)
	Shear strength after boiling	≥8Mpa (Aluminum alloy)
Shelf life  (unopened below 25°C)	12 months	6 months

*Testing temperature 23°C and 50% r.h.

 

Package:
Resin: 25kg/barrel, Hardener: 25kg/barrel
Resin: 1250kg/pail,Hardener: 250kg/pail

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