EST-420DP 2:1 Off-white/Black epoxy structural adhesive
Two-part 2:1 epoxy structural adhesive offering outstanding shear and peel adhesion, high levels of durability and good strength along with high impact and fatigue resistance to meet demanding bonding challenges.
2:1 epoxy structural adhesive
Epoxy | Feature | color | Viscosity (cps) | Ratio | Working time (minute) | Fixture time (minute) | Curing time (Hour) |
EST-420DP | Toughened, flowable, fire retardant | Off-white, Black | 8,000-14,000 | 2:1 | 15-30 | 120 | 24 |
EST-460DP | Toughened, flowable, fire retardant | Off-white | 20,000-50,000 | 2:1 | 60-90 | 240 | 24 |
EST-490DP | toughness and high strength; excellent heat and environmental resistance | Black | 70,000 | 2:1 | 90 | 240 | 24 |
EST-HP20 | Easy mixed, toughened | Off-white | 30,000 | 2:1 | 20 | 120 | 24 |
EST-HP60 | High performance | Off-white | 45,000 | 2:1 | 60 | ≧180 | 24 |
EST-HP120 | High temperature resistant, chemical resistant | Off-white | 30,000 | 2:1 | 120 | ≧180 | 24 |
EST-CL30 | Middle working time, chemical resistant | colorless to slight yellowish | 10,000 | 2:1 | 30 | ≧180 | 24 |
Typical Uncured Physical Properties
Product | EST-420DP |
Viscosity @ 73°F (23°C) | A: 20,000-50,000 cps B: 8,000-14,000 cps |
Base Resin | A: EPOXY B: AMINE |
Color | A: WHITE, BLACK B: AMBER |
Mix Ratio (B:A) | Volume ratio: 2:1 Weight ratio: 2:0.98 |
Work life, 73°F (23°C) | 5g mixed: 30 minutes 10g mixed: 20 minutes 20g mixed: 10 minutes |
Typical cured Physical Properties
Product | EST-420DP |
Color | Opaque, off-white or Black |
Shore D Hardness | 75-80 |
Thermal Coefficient of Thermal Expansion Below Tg (in./in./°C) Above Tg |
85 x 10-6 (white); 80 x 10-6 (Black); 147 x 10-6(white); 194 x 10-6(Black); |
Thermal Conductivity (btu - ft./ft.2 - hr. - °F) @ 45°C | 0.1 |
Electrical Dielectric Strength | 690 volts/mil
|
Volume Resistivity | 1.3 x 1014 ohm-cm (white); 1.6 x 1015 ohm-cm (Black) |
Typical Adhesive Performance Characteristics
Aluminum, Overlap Shear, at Temperature (PSI)
| EST-420DP |
-67°F (-55°C) 73°F (23°C) 180°F (82°C) (15 min.) (30 min.) (60 min.) (4 hr.) 250°F (121°C) (15 min.) | 4500 4500 450 700 750 2500 200 |
Metals, Overlap Shear, Tested @ 73°F (23°C) (PSI)
| EST-420DP |
Aluminum | 4000 |
Cold Rolled Steel | 4000 |
Copper | 4000 |
Brass | 4000 |
Stainless Steel | 4000 |
Galvanized Steel | 2000 |
Aluminum, T-Peel (PIW), at Temperature
| EST-420DP |
-67°F (-55°C) 73°F (23°C) 180°F (82°C)
| 5-10 50 3-5 |
Metals, T-Peel, Tested @ 73°F (23°C)
| EST-420 |
Aluminum 17-20 mil bondline Aluminum 5-8 mil bondline | 50 40 |
Cold Rolled Steel 17-20 mil bondline Oakite degreased MEK/abrade/MEK |
40 25 |
Aluminum, Bell Peel (PIW), at Temperature
| EST-420DP |
-67°F (-55°C) 73°F (23°C) 180°F (82°C) | 20 80 18 |
Cartridge size:
2:1 dual PP cartridge 50ml;
2:1 dual PP cartridge 400ml.
Storage
Store product at 60-80°F (15-27°C) or refrigerate for maximum shelf life.
Shelf Life
This product has a shelf life of 12 months in original containers.
General Description
SpiderAdhesive EST-420DP is a toughened, two-part 2:1, off-white or Black, epoxy structural adhesive, offering outstanding shear and peel adhesion, and very high levels of durability.
SpiderAdhesive EST-420DP provides good strength along with high impact and fatigue resistance to meet demanding bonding challenges.
can replace mechanical fasteners, screws, rivets and spot welds in many applications.
Features
• High shear strength
• Easy mixing
• High peel strength
• Controlled flow
• Outstanding environmental performance
• 20 minute work life
