2:1 epoxy structural adhesive
|
Epoxy |
Feature |
color |
Viscosity (cps) |
Ratio |
Working time (minute) |
Fixture time (minute) |
Curing time (Hour) |
|
EST-420DP |
Toughened, flowalbe, fire retardant |
Off-white, Black |
8,000-14,000 |
2:1 |
15-30 |
120 |
24 |
|
EST-460DP |
Toughened, flowalbe, 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 |
General Description
UVALAM EST-HP20 is a two-component 2:1, Off-white, toughened, medium viscosity, industrial grade, epoxy structural adhesive with a medium working life.
Once mixed, the epoxy cures at room temperature to form a tough, off-white bondline which provides high peel resistance and high shear strengths.
The fully cured epoxy is resistant to a wide range of chemicals and solvents, and acts as an excellent electrical insulator.
Typical applications
Typical applications include general purpose industrial applications requiring moderate work life with high performance on a wide variety of plastics, metals, dry concrete or architectural materials.
Product characteristics:
|
Chemical Type |
Epoxy |
|
Appearance (Resin) |
Pale yellow liquid |
|
Appearance (Hardener) |
yellow liquid |
|
Appearance (Mixture) |
off-white |
|
Components |
Two component 2:1 (requires mixing) |
|
Viscosity |
Medium |
|
Mix Ratio, (by volume) |
Resin : Hardener = 2 : 1 |
|
Mix Ratio, by weight |
Resin : Hardener = 100 : 55 |
|
Cure |
Room temperature cure after mixing |
|
Application |
Bonding |
TYPICAL PROPERTIES OF UNCURED MATERIAL
Resin:
Specific Gravity @ 25 °C: 1.0
Viscosity: 65,000 cps
Hardener:
Specific Gravity @ 25 °C: 1.1
Viscosity: 7,000 cps
Mixed Properties:
Specific Gravity @ 25 °C: 1.03
Viscosity: 65,000 cps
TYPICAL CURING PERFORMANCE
Working life, minutes: 20
Tack Free Time, minutes: 40
Cure Speed vs. Time
The graph below shows shear strength developed with time on abraded, acid etched aluminum lapshears @23°C with an average bondline gap of 0.1 to 0.2 mm
TYPICAL PROPERTIES OF CURED MATERIAL
Cured @ 23 °C for 5 days
Physical Properties:
|
Glass Transition Temperature (Tg) |
60°C |
|
Shore Hardness, Durometer D |
80 |
|
Elongation |
8% |
|
Tensile Strength |
5,700 psi |
Electrical Properties:
|
Dielectric Breakdown Strength |
20 kV/mm |
TYPICAL PERFORMANCE OF CURED MATERIAL -Adhesive Properties
|
Substrate |
Lap Shear Strength |
|
|
N/mm² |
psi |
|
|
Steel (grit blasted) |
22.6 |
3,270 |
|
Aluminum (anodized) |
14.7 |
2,530 |
|
Stainless steel |
22 |
3,190 |
|
Polycarbonate |
3.9 |
560 |
|
Nylon |
1.8 |
260 |
|
Wood (Pine) to Steel (grit blasted) |
11.3 |
1,600 |
TYPICAL ENVIRONMENTAL RESISTANCE
Cured for 12 hours @ 65°C followed by 4 hours @ 23°C
Lap Shear Strength: Aluminum (acid etched & abraded), 0.1 to 0.2 mm gap
Hot Strength
Tested at temperature
Heat Aging
Aged at temperature indicated and tested @ 23°C
Chemical/Solvent Resistance
Aged under conditions indicated and tested @ 23 °C.
|
|
|
% of the initial strength |
|
|
Environment |
°C |
500 hours |
1000 hours |
|
air |
87 |
/ |
137 |
|
Motor oil |
87 |
164 |
171 |
|
Unleaded gasoline |
87 |
108 |
82 |
|
Water/glycol 50/50 |
87 |
120 |
120 |
|
Salt fog |
23 |
/ |
70 |
|
95%RH |
38 |
/ |
100 |
|
Condensing Humidity |
49 |
/ |
90 |
|
water |
23 |
/ |
80 |
|
Acetone |
23 |
76 |
95 |
|
Isopropanol |
23 |
85 |
120 |
Packing Cartridge size:
2:1 dual PP cartridge 50ml;
2:1 dual PP cartridge 400ml.
Storage
Store product in the unopened container in a dry location.
Storage information may be indicated on the product container labeling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or greater than 28 °C can adversely affect product properties.
Material removed from containers may be contaminated during use.
Do not return product to the original container.
Shelf Life
This product has a shelf life of 12 months in original containers.
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