Huitian® 8642 is a two-component polyurethane adhesive product, specially developed for RO membrane modules, it is suitable for the assembly of most membranes and has excellent hydrolytic stability and chemical resistance properties. This product conforms to the requirements of FDA175.105 and is certified to NSF 61.
Typical application
Used for the assembly of RO membrane modules.
| General properties Before curing |
| Items |
8642 A |
8642 B |
| Appearance |
Amber liquid |
Amber liquid |
| Chemical type |
Polyol |
Isocyanate prepolymer |
| Packaging |
5 or 55 Gallon |
5 or 55 Gallon |
| Viscosity(mPa·s) (GB/T10247-2008) |
24,000±6,000 |
24,000±6,000 |
| Mixture Viscosity |
25,000 |
25,000 |
| Density(g/cm3) (GB/T13354-1992) |
1.0 |
1.1 |
| Mix ratio |
9:10 by weight |
| Mix ratio |
1:1 by volume |
| Working time(23℃) |
45 minutes |
| Properties after curing |
| Items |
Typical data |
| Hardness(shore A) (GB/T531-1999) |
75 |
| Tensile strength(MPa) (GB/T528-1998) |
8 |
| Elongation at break(%) (GB/T528-1998) |
150 |
| Working temperature(°C) |
40~90 |
Direction for Use
1.Clean up the surface of bonding materials, keep dry and clean. The surface of polyolefin materials must be subjected to a corona treatment or flame treatment.
2.Mix the glue completely 1:1 by volume or 9:10 by weight, we recommend using auto-mix equipment, or the mixed glue should be handled by vacuum system before operation.
3.dispensing the mixed glue to the surface of bonding material,then pressure the two sheets of bonding materials because there is no initial adhesion.
4.waiting over 3 hours under 50℃ or over 8 hours under 23℃, then transfer to the next process.
Cautions
1.seal the unused glue for next time use, contaminated glue should no longer put into the original packaging pail.
2.Keep away from the children
3.This product contains isocyanate, which may irritating to
skin and eyes. If contact, flush with plenty of water.
4.Please refer to the product MSDS for safety information.
Packaging
Set 1: 8642A 180KG/drum, 8642B 200KG/drum;
Set 2: 8642A 18KG/pail, 8642B 20KG/pail.
Storage
Store under 8-28 ℃ cool and dry place, the shelf life is 12 months in original package
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