Lab Data Sheet
EW 6662G
Two-part epoxy
Version1 (04/2024)
Page 1 of 2
CollTech Group
Europe
http://www.colltech.de
Asia
info@colltech.de
Americas
Tel: +49 (0) 06436-949-138-0
Tel: +86-769-89066900
Tel: +1-408-341-6373
Description
EW 6662G is two part epoxy adhesive. Its typical
application include potting, laminating and
electrical/electronic insulation.
Features
• Good adhesion on PA, stainless steel
• Excellent reliability under mechanical stress, thermal
shock and temperature humidity bias
• Low shrinkage
Typical Properties of Uncured Material
Chemical Type
Modified epoxy
Appearance
Part A
Part B
Black
Brown
Viscosity @ 25℃ [mPa・s]
Brookfield DV2T, SP 14# @ 20 rpm
Part A
Part B
Mixed
8500
300
2000
Specific Gravity [g/cm
3
]
Part A
Part B
1.16
1.05
Mix Ratio
Part A : Part B (by volume)
2:1
Shelf Life @ 25℃ [month]
6
Work Life @50g, 25℃ [minute]
30
Typical Curing Schedule
Tack Free @ 25
o
C [hour]
4
Cure Time @ 25
o
C [hour]
24
Cure Time @ 80
o
C [hour]
1
The actual cure schedule may vary based on the
requirements of the applications, as well as curing
equipment, size and shape of parts, loading of samples, etc.
Typical Properties of Cured Material
Hardness [Shore D]
ASTM D2240
80
Lap Shear Strength [MPa]
AL /AL, ASTM D1002 (Cured by 60min
@80
o
C)
>18
Glass Transition Temperature [℃]
ASTM E1640, by TMA
65
Volume Resistivity [Ω・cm]
ASTM D257
>10
14
Note: The technical data contained herein are intended as
reference only. Please contact your local technical support
engineer for further assistance.
Directions for Use
1.
Surface Treatment
Surfaces to be bonded should be free of dust, oil, grease
or any other contaminants in order to achieve a
reproducible bond. For slightly contaminated surfaces, it
is sufficient to wipe with isopropanol or ethanol.
Substrates with a low surface energy (e.g., polyethylene,
polypropylene, Teflon) need to be pre- treated physically
(e.g., atmospheric plasma or corona) in order to achieve
sufficient adhesion.
2.
Application
Products are supplied ready for use. Depending on
package type, they can be dosed manually, semi-
automatically or fully-automatically with a dosage
apparatus. With automatic dispensing using a cartridge,
the adhesive is conveyed via pressure and a piston rod
to a dispense valve. With bottles, the adhesive is
conveyed using a pump.
After application, it is recommended that the two
substrates be adjoined immediately as it is possible the
curing process will begin with select products under
ambient conditions.
3.
Suggested working temperature range is -40 to 125°C.
Storage
Maximum shelf life may be obtained when product is stored
in a cool and dry location at an optimal temperature of 10-
28°C.
TO PREVENT CONTAMINATION OF UNUSED PRODUCT,
DO NOT RETURN ANY PRODUCT TO ITS ORIGINAL
CONTAINER.
Lab Data Sheet
EW 6662G
Two-part epoxy
Version1 (04/2024)
Page 2 of 2
CollTech Group
Europe
http://www.colltech.de
Asia
info@colltech.de
Americas
Tel: +49 (0) 06436-949-138-0
Tel: +86-769-89066900
Tel: +1-408-341-6373
Allow the product to thaw for 1 hour after it is removed
from the refrigerator prior to use. It is best practice to
wipe away any moisture on the surface of the syringe with
cleanroom wipes.
Materials Handling
Refer to the Material Safety Data Sheet (MSDS) for this
product.
Disclaimer
The information provided here including the
recommendations for use and application of the product is
based on internal laboratory test conditions and should only
be used as a reference. CollTech does not assume
responsibility for the test or performance results obtained
by the user. It is the responsibility of the user to perform
their own evaluations to confirm whether this product is
suitable for their application.