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

• Type: Sealant
• Seal Tape Kind: High Density Colored PTFE Tapes
• Seal Tape Usage: Engineering
• Material: Composite Materials
• State: Nonfluid
• Mildew Proof: Mildew Proof
• Model NO.: Flexibond8205HV
• Bonding Material: Aluminum
• Transport Package: 25kg/5kg Cubo 1250kg/250kg Tambor
• Specification: 25kg/5kg Cubo 1250kg/250kg Tambor
• Trademark: Flexibond
• Origin: China
• HS Code: 3909500000
• Production Capacity: 50000 Tons/Year

Product Description

Flexibond 8205HV

Technical Data

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.

1. 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

2. Characteristics:
(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

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 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.

4.  Packaging
Resin: 25kg/barrel, Hardener: 25kg/barrel
Resin: 1250kg/pail,Hardener: 250kg/pail
 

5.Shear Strength Chart (at Room Temperature):

6.Note
(1) The adhesive sealant should be used up once mixed. The remaining sealant cannot be used if viscosity appears too large or its state is like jelly.
(2) Do not apply the product together with other adhesives. Please enquire to our technicians if you have such a need.
(3) The information and recommendations related to the application and end-use of COMENS' products are given in good faith based on COMENS' current knowledge and experience of the products when properly stored, handled and applied under normal conditions. This information must on no account be used as a substitute for necessary prior tests which alone can ensure that a product is suitable for a given use, due to the practical differences in materials, substrates and actual site conditions. Users are requested to check that they are in possession of the latest version of this documents and COMENS' is at their disposal to supply any additional information.