Product Description：
DB9664 is a hot-melt adhesive specially designed for positioning bonding of MEA frames—fast positioning bonding function. After fully cured, it has extremely high impact resistance, water boiling resistance and chemical resistance, which can meet the requirements of fuel cells
Physical properties：
One-component, fast curing speed;
Viscosity suitable for narrow side bonding, strong thermal stability;
Good adhesion to PEN, PET, PI, and other films and carbon paper;
Excellent adhesion to TPU and other low surface energy substrates
Material properties before curing
Item | Representative |
Chemical type | Modified Polyurethane |
Appearance (visual) | light white |
opening hours, s | 40-60 |
viscosity@25℃ ASTM D2196 mpa.s | 7200-10800 |
Operating temperature range（°C） | 110～150 |
Hot and cold cycle test
Conditions: -40°C & 1h, 95°C & 1h, one cycle 2h, the data after 360 cycles are as follows
Item | Representative |
PC+PC | 9.33 |
PC+Aluminum | 7.63 |
PC+Stainless steel | 7.01 |
Nylon glass fiber + nylon glass fiber | 4.94 |
Nylon fiberglass+aluminum | 4.36 |
