Scotch-Weld™ Epoxy Adhesive
DP100 Plus Clear
Technical Data September 2016
Product Description 3M™ Scotch-Weld™ Epoxy Adhesive DP100 Plus Clear is a fast setting,
two-part, 1:1 mix ratio mercaptan-cured epoxy adhesive. It is unique
among fast setting mercaptan cure epoxies in that it combines high shear
strength with good peel performance properties. Scotch-Weld Epoxy
adhesive DP100 Plus Clear is transparent and slightly flexible when cured.
Available in bulk containers as 3M™ Scotch-Weld™ Epoxy Adhesive
DP100 Plus B/A Clear.
Features
• 4 minute worklife
• High shear and peel strength
• Slightly flexible
• 1:1 mix ratio
Typical Uncured
Physical
Properties
Note: The following technical information and data should be considered
representative or typical only and should not be used for specification
purposes.
BASE RESINS
Epoxy/Mercaptan
Viscosity1 Approximate
@ 80°F (23°C)
Base (B)
Accelerator (A)
4,000 to 11,000 cps
7,000 to 13,000 cps
Net Weight
(Lbs./Gallon)
Base (B)
Accelerator (A)
9.7 to 9.9
9.4 to 9.8
Color2
Base (B)
Accelerator (A)
Clear
Clear
Mix Ratio (B:A)
By Volume
1:1
By Weight
1:1
Worklife3
@ 73°F (23°C)
2 gram
20 gram
4 min.
3 min.
1 Viscosity determined using test method C-1d. Procedure involves Brookfield RVF, #7 spindle, 20 rpm and 80°F
(27°C). Measurement taken after 1 minute revolution.
2 Color may vary from colorless to yellow/amber. Adhesive performance is not affected by color variation.
3 Worklife determined using test method C-3180. Procedure involves periodically measuring a 2 gram mixed mass
for self leveling and wetting properties. This time will also approximate the usable worklife in an 3M™ EPX™
Applicator mixing nozzle.
3M™ Scotch-Weld™ Epoxy Adhesive
DP100 Plus Clear
2
Typical
Cured
Properties
Note: The following technical information and data should be considered representative or
typical only and should not be used for specification purposes.
PHYSICAL
Clear
65-70
3-4 minutes
9-10 minutes
20 min. @ 73°F (23°C)
48 hrs. @ 73°F (23°C)
75%
1850 psi
THERMAL
Weight Loss by Thermal Gravimetric Analysis (TGA)7
1% @ 116°C
5% @ 318°C
Thermal Coefficient of Expansion (TCE) by TMA8 ( x 10-6
units/unit/°C)
Below Tg
Above Tg
93 (5-20°C range)
182 (40-140°C range)
Glass Transition Temperature (Tg) by DSC9 Onset
Mid-Point
23°C
29°C
Thermal Conductivity10
(@ 110°F on .250" samples) BTU
- ft./ft.2 - hr. - °F
Cal./sec. - cm - °C
Watt/m - °C
.077
.32 x 10-3
.133
Thermal Shock Resistance11
Potted Washer Olyphant Test
(Test Method C-3174
+ 100°C [air] to -50°C [liquid])
Pass 5 cycles
without cracking
ELECTRICAL
Dielectric Constant @ 1 KHz @ 23°C (ASTM D 150)
6.6
Dissipation Factor @ 1 KHz @ 23°C (ASTM D 150)
0.06
Dielectric Strength (ASTM D 149)
Sample Thickness Approx. 30 mil.
710 volts/mil
Volume Resistivity (ASTM D 257)
6.7 x 1011 ohm-cm
2
Worklife determined using test method C-3180. Procedure involves periodically measuring a 2 gram mixed mass for self leveling and wetting
properties. This time will also approximate the usable worklife in an 3M™ EPX™ Applicator mixing nozzle.
3
Tack-free time determined per test method C-3173. Involves dispensing 0.5 gram amount of adhesive onto substrate and testing periodically for no
adhesive
transfer to metal spatula.
4
Handling strength determined per test method C-3179. Time to handling strength taken to be that required to achieve a 50 psi overlap shear (OLS)
strength
using aluminum substrates.
5
The cure time is defined as that time required for the adhesive to achieve a minimum of 80% of the ultimate strength as measured by aluminum-
aluminum
OLS.
6
Tensile and Elongation. Used procedure in test method C-3094/ATSM D 882. Samples were 2 in. dumbbells with .0125 in. neck and .030 in. sample
thickness.
Separation rate was 2 inches per minute. Samples cured 2 hrs. RT plus 2 hrs. 160°F (71°C).
7
Weight loss by TGA reported as that temperature at which 5% weight loss occurs by TGA in air at 5°C rise per minute per ASTM 1131-86.
8
TCE determined using TMA Analyzer using a heating rate of 10°C per minute. Second heat values given.
9
Glass Transition Temperature (Tg) determined using DSC Analyzer with a heating rate of 20°C per minute. Second heat values given.
10
Thermal conductivity determined using ASTM C177 and C-matic Instrument using 2 in. diameter samples.
11
Thermal shock resistance run per test method C-3174. Involves potting a metal washer into a 2 in. x 0.5 in. thick section and cycling this test
specimen
to colder and colder temperatures.
3M™ Scotch-Weld™ Epoxy Adhesive
DP100 Plus Clear
3
Typical
Adhesive
Performance
Characteristics
Note: The following product performance data was obtained in the 3M laboratory under the
conditions specified. The following data show typical results obtained with 3M™
Scotch-Weld™ Epoxy Adhesive DP100 Plus Clear when applied to properly prepared
substrates, cured, and tested according to the specifications indicated. This data was
generated using the 3M™ EPX™ Applicator System equipped with an EPX static mixer,
according to manufacturer’s directions. Thorough hand mixing should afford
comparable results.
Overlap Shear Strength (OLS) to 12
(Bonds cured 24 hours @ room temperature (RT) + 2 hrs @ 160°F [71°C])
Etched Aluminum
3500 psi
Sanded Aluminum (60 grit)
1800 psi
Cold Rolled Steel
1700 psi
Wood, Fir
700 psi
Glass, Borosilicate
250 psi
Glass, +3M™ Scotch-Weld™ Primer EC3901
300 psi
Polycarbonate
600 psi
Acrylic
300 psi
Fiberglass
1500 psi
ABS
280 psi
PVC
450 psi
Polypropylene
80 psi
Rate of Strength Buildup
(OLS on Etched Aluminum)12
Bonds tested after:
1 hr @ RT
600 psi
6 hrs @ RT
900 psi
24 hrs @ RT
1100 psi
7 days @ RT
2800 psi
1 mo @ RT
3400 psi
Environmental Aging
(OLS on Etched Aluminum)12
Bonds tested after:
24 hrs RT + 2 hrs @ 160°F (71°C)
3500 psi
24 hrs RT + 2 hrs @ 240°F (116°C)
4500 psi
1 wk RT + 1 wk @ 90°F (32°C)/90% RH
3900 psi
1 wk RT + 1 wk 248°F (120°C)
4500 psi
1 wk RT + 1 wk H2O immersion
3500 psi
12
Overlap shear (OLS) strengths were measured on 1 in. wide 1/2 in. overlap specimens. These bonds were made individually using 1
in. x 4 in. pieces of substrate. The thickness of the bond line was 0.005-0.008 in. All strengths were measured at 70°F (21°C)
except where noted. (Test per ASTM D 1002-72.)
The separation rate of the testing jaws was 0.1 in. per minute for metals, 2 in. per minute for plastics and 20 in. per minute for
rubbers. The thickness of the substrates were: steel, 0.060 in.; other metals, 0.05-0.064 in.; rubber, 0.125 in.; plastics, 0.125 in.
3M™ Scotch-Weld™ Epoxy Adhesive
DP100 Plus Clear
4
Typical
Adhesive
Performance
Characteristics
(continued)
Overlap Shear Strength (OLS) vs. Temperature, Etched Aluminum12
(Bonds cured 24 hours @ room temperature (RT) + 2 hours @ 160°F [71°C])
Bonds tested at:
-67°F (-55°C)
3000 psi
70°F (21°C)
3500 psi
120°F (49°C)
750 psi
150°F (66°C)
400 psi
180°F (82°C)
200 psi
180° Peel Strength vs. Temperature, Etched Aluminum13
(Bonds cured 24 hours @ room temperature (RT) + 2 hours @ 160°F [71°C])
-67°F (-55°C)
2 piw
70°F (21°C)
13 piw
120°F (49°C)
15 piw
150°F (66°C)
2 piw
180°F (82°C)
1 piw
Solvent Resistance14
One Hour/One Month
Acetone
A/A
Isopropyl Alcohol
A/A
Freon TF
A/A
Freon TMC
A/A
1,1,1-Trichloroethane
A/A
RMA Flux
A/A
Key: A - Unaffected, B - Slight Attack, C - Moderate/Severe Attack
Exotherm15
Max. Temp/Time to Reach
2 gram mass
128°F/6 min.
20 gram mass
260°F/3 min.
12 Overlap shear (OLS) strengths were measured on 1 in. wide 1/2 in. overlap specimens. These bonds were made individually
using 1 in. x 4 in. pieces of substrate. The thickness of the bond line was 0.005-0.008 in. All strengths were measured at 70°F (21°C)
except where noted. (Test per ASTM D 1002-72.)
The separation rate of the testing jaws was 0.1 in. per minute for metals, 2 in. per minute for plastics and 20 in. per minute for rubbers.
The thickness of the substrates were: steel, 0.060 in.; other metals, 0.05-0.064 in.; rubber, 0.125 in.; plastics, 0.125 in.
13 T-peel strengths were measured on 1 in. wide bonds at 73°F (23°C). The testing jaw separation rate was 20 inches per minute. The
substrates were 0.020 in. thick. (Tests per ASTM D 1876-61T.)
14 Solvent resistance was determined using cured (24 hrs. RT + 2 hrs. 160°F [71°C]) samples (1/2 in. x 4 in. x 1/8 in. thickness) immersed
in the test solvent for 1 hour and 1 month. After the allotted period of time, the sample was removed and visually examined for surface
attack as compared to the control.
Key: A - Unaffected - no change to color or surface texture.
B - Slight attack - noticeable swelling of surface.
C - Moderate/severe attack - extreme swelling of surface.
15 Exotherm determined using the stated mass mixed for 1 minute and then by electronic thermocouple measuring the peak
temperature and time to that temperature.
3M™ Scotch-Weld™ Epoxy Adhesive
DP100 Plus Clear
5
Adhesive*
6mm Nozzle
gms/minute
10mm Nozzle
gms/minute
3M™ Scotch-Weld™ Epoxy
Adhesive DP100 Plus Clear
54
206.5
3M™ EPX™
Pneumatic Applicator Delivery Rates 400 ml Applicator – Maximum Pressure 73 psi
200 ml Applicator – Maximum Pressure 58 psi
3M™ Scotch-Weld™ Epoxy Adhesive DP100 Plus
Clear
45.7
179
50 ml Applicator – Maximum Pressure 50 psi
Adhesive*
1/4 in. Nozzle
gms/minute
3M™ Scotch-Weld™ Epoxy Adhesive DP100 Plus
Clear
60
*Tests were run at a temperature of 70°F ± 2°F (21°C ± 1°C) and at maximum applicator pressure.
For small or intermittent applications, the 3M™ EPX™ Applicator is a
convenient method of application.
For larger applications, these products may be applied by use of flow
equipment.
Two-part meter/mixing/dispensing equipment is available for intermittent
or production line use. These systems may be desirable because of their
variable shot size and flow rate characteristics and are adaptable to many
applications.
Application
Equipment
Suggestions
3M™ Scotch-Weld™ Epoxy Adhesive
DP100 Plus Clear
6
Handling/Curing
Information
Directions For Use
1. For high strength structural bonds, paint, oxide films, oils, dust, mold release
agents and all other surface contaminants must be completely removed.
However, the amount of surface preparation depends on the required bond
strength and the environmental aging resistance desired by user. For specific
surface preparations on common substrates, see the section on surface
preparation.
2. Use gloves to minimize skin contact. Do not use solvents for cleaning hands.
3. Mixing:
For Duo-Pak Cartridges
3M™ Scotch-Weld™ Epoxy Adhesive DP100 Plus Clear is supplied in a dual
syringe plastic duo-pak cartridge as part of the 3M™ EPX™ Applicator System.
To use, simply insert the duo-pak cartridge into the EPX applicator and start the
plunger into the cylinders using light pressure on the trigger. Next, remove the
duo- pak cartridge cap and expel a small amount of adhesive to ensure both sides
of the duo-pak cartridge are flowing evenly and freely. If automatic mixing of Part
A and Part B is desired, attach the EPX applicator mixing nozzle to the duo-pak
cartridge and begin dispensing the adhesive. For hand mixing, expel the desired
amount of adhesive and mix thoroughly. Mix approximately 15 seconds after
uniform color is obtained.
For Bulk Containers
Mix thoroughly by weight or volume in the proportions specified in the typical
uncured properties section. Mix approximately 15 seconds after uniform color
is obtained.
4. For maximum bond strength, apply adhesive evenly to both surfaces to be joined.
5. Application to the substrates should be made within 3 minutes. Larger
quantities and/or higher temperatures will reduce this working time.
6. Join the adhesive coated surfaces and allow to cure at 60°F (16°C) or above
until completely firm. Heat up to 200°F (93°C), in order to speed curing. These
products will cure in 48 hours @ 75°F (24°C).
7. Keep parts from moving during cure. Contact pressure necessary. Maximum
shear strength is obtained with a 3-5 mil bond line.
8. Excess uncured adhesive can be cleaned up with methyl ethyl ketone (MEK).*
Adhesive Coverage: A 0.005 in. thick bond line will yield a coverage of 320 sq.
ft./gallon.
*Note: When using solvents, extinguish all ignition sources, including pilot lights,
and follow manufacturer’s precautions and directions for use.
3M™ Scotch-Weld™ Epoxy Adhesive
DP100 Plus Clear
7
Surface Preparation For high strength structural bonds, paint, oxide films, oils, dust, mold release agents
and all other surface contaminants must be completely removed. However, the
amount of surface preparation directly depends on the required bond strength and the
environmental aging resistance desired by user.
The following cleaning methods are suggested for common surfaces:
Steel
1. Wipe free of dust with oil-free solvent such as acetone, isopropyl or alcohol solvents.*
2. Sandblast or abrade using clean fine grit abrasives.
3. Wipe again with solvent to remove loose particles.
4. If a primer is used, it should be applied within 4 hours after surface preparation.
Aluminum
1. Alkaline Degrease: Oakite 164 solution (9-11 oz./gallon water) at 190°F ± 10°F
(88°C ± 5°C) for 10-20 minutes. Rinse immediately in large quantities of cold
running water.
2. Acid Etch: Place panels in the following solution for 10 minutes at 150°F ± 5°F
(66°C ± 2°C).
Sodium Dichromate 4.1 - 4.9 oz./gallon
Sulfuric Acid, 66°Be 38.5 - 41.5 oz./gallon
2024-T3 aluminum (dissolved) 0.2 oz./gallon
minimum Tap water as needed to balance
3. Rinse: Rinse panels in clear running tap water.
4. Dry: Air dry 15 minutes; force dry 10 minutes at 190°F ± 10°F (88°C ± 5°C).
5. If primer is to be used, it should be applied within 4 hours after surface preparation.
Note: Read and follow component supplier’s environmental health and safety
information prior to preparing this etch solution.
Plastics/Rubber
1. Wipe with isopropyl alcohol.*
2. Abrade using fine grit abrasives.
3. Wipe with isopropyl alcohol.*
Glass
1. Solvent wipe surface using acetone or MEK.*
*Note: When using solvents, extinguish all ignition sources, including pilot lights, and
follow manufacturer’s precautions and directions for use.
3M™ Scotch-Weld™ Epoxy Adhesive
DP100 Plus Clear
8
Storage and Shelf Life Store 3M™ Scotch-Weld™ Epoxy Adhesive DP100 Plus Clear at 60-80°F (15-
27°C) for maximum shelf life. These epoxy adhesive products have a shelf life of 2
years in their unopened containers and 15 months in Duo-Pak containers. Product
shelf life is based on date of shipment.
Precautionary
Information
Refer to Product Label and Material Safety Data Sheet for health and safety
information before using this product. For additional health and safety
information, call 1-800-364-3577 or (651) 737-6501.
Technical Information The technical information, recommendations and other statements contained in
this document are based upon tests or experience that 3M believes are reliable,
but the accuracy or completeness of such information is not guaranteed.
Product Use Many factors beyond 3M’s control and uniquely within user’s knowledge and
control can affect the use and performance of a 3M product in a particular
application. Given the variety of factors that can affect the use and performance
of a 3M product, user is solely responsible for evaluating the 3M product and
determining whether it is fit for a particular purpose and suitable for user’s
method of application.
Warranty, Limited
Remedy, and
Disclaimer
Unless an additional warranty is specifically stated on the applicable 3M product
packaging or product literature, 3M warrants that each 3M product meets the
applicable 3M product specification at the time 3M ships the product. 3M
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INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR
CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
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If the 3M product does not conform to this warranty, then the sole and
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arising from the 3M product, whether direct, indirect, special, incidental or
consequential, regardless of the legal theory asserted, including warranty,
contract, negligence or strict liability.
ISO 9001: 20 00
This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001: 2000 standards.
Industrial Adhesives and Tapes Division
3M Center, Building 225-3S-06
St. Paul, MN 55144-1000
800-362-3550 • 877-369-2923 (Fax)
www.3M.com/structuraladhesives
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