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October, 2017
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear
Product Description
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear is available in larger containers like 3M™ Scotch-Weld™
Epoxy Adhesive 105 B/A Clear.
3M™ Scotch-Weld Epoxy Adhesive DP105 Clear is a fast setting, very exible 1:1 mix ratio epoxy
adhesive/sealant. Its exibility when cured makes it ideal for applications involving dissimilar surfaces where
thermal coe cient of expansion may be a problem. It is also unique in that it retains its clear, colorless
properties longer than most 5 minute epoxies.
Product Features
• 4 minute worklife
• High peel strength
• Flexible
• 1:1 mix ratio
• Clear
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear
Technical Information Note
The following technical information and data should be considered representative or typical only and should not be used for speci cation purposes.
Typical Uncured Physical Properties
Property
Values
Method
Test Condition
Notes
Base Color
Clear
Accelerator Color
Clear
Base Viscosity
1,000-5,000 cP
3M C1d
80°F(27°C)
Procedure involves Brook eld RVF, #7 spindle,
20 rpm. Measurement taken after 1 minute
rotation.
Accelerator Viscosity
8,000-16,000 cP
3M C1d
80°F(27°C)
Procedure involves Brook eld RVF, #7 spindle,
20 rpm. Measurement taken after 1 minute
rotation.
Base Resin
Epoxy
Accelerator Resin
Mercaptan
Base Net Weight
9.1 to 9.5 lb/gal
Accelerator Net Weight
9.4 to 9.8 lb/gal
Mix Ratio by Volume
(B:A)
1:1
Mix Ratio by Weight
(B:A)
1:0.97
Typical Mixed Physical Properties
Exotherm max temp
Test Condition
37 °C
98 °F
2g mass
110 °C
230 °F
20g mass
Property: Exotherm max temp
notes: 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 DP105 Clear
Typical Mixed Physical Properties (continued)
Rate of Strength Buildup (OLS)
Dwell/Cure Time
250 lb/in²
60 min
500 lb/in²
6 hr
1000 lb/in²
24 hr
2000 lb/in²
7 days
2000 lb/in²
1 month
Property: Rate of Strength Buildup (OLS)
Method: ASTM D1002
Test Condition : Room Temperature
Substrate: Etched Aluminum
Substrate Notes: 0.005-0.008in bondline
notes: 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 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.
Property
Values
Test Condition
Notes
Exotherm time to
reach max temp
5 min
2g mass
Exotherm determined using the stated mass mixed for
1 minute and then by electronic thermocouple
measuring the peak temperature and time to that
temperature.
Exotherm time to
reach max temp
3 min
20g mass
Exotherm determined using the stated mass mixed for
1 minute and then by electronic thermocouple
measuring the peak temperature and time to that
temperature.
Worklife
3 to 4 min
Room Temperature
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 C3180
Worklife, 2g
mixed
5 min
Room Temperature
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 C3180
Table continued on next page
Method
Substrate
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear
Typical Mixed Physical Properties (continued)
Property
Values
Test Condition
Notes
Method
Substrate
Worklife, 20g
mixed
4 min
Room Temperature
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 C3180
Tack Free Time
10 min
Involves dispensing 0.5 gram amount of adhesive
onto substrate and testing periodically for no
adhesive transfer to metal spatula.
3M C3173
Time to Handling
Strength
20 min
Room Temperature
Time to handling strength taken to be that required to
achieve a 50 psi overlap shear (OLS) strength using
aluminum substrates.
3M C3179
Values
Method
Dwell/Cure Time
Notes
Tensile Strength
600 lb/in²
ASTM D882
2 hr Room
Temperature, plus 2
hr @ 160°F(71°C)
Samples were 2" dumbbells with .0125" neck and
.030" sample thickness. Separation rate was 2 inches
per minute.
Transparency
and Color
Clear and colorless
in thin bondlines
Shore D
Hardness
25 to 30
ASTM D2240
Weight Loss by
Thermal
Gravimetric
Analysis (TGA)
1%
ASTM E1131
Weight loss by Thermal Gravimetric Analysis reported
as that temperature at which 5% weight loss occurs
by TGA in air at 5°C (41°F) rise per minute.
243°F(117°C)
Weight Loss by
Thermal
Gravimetric
Analysis (TGA)
5%
ASTM E1131
Weight loss by Thermal Gravimetric Analysis reported
as that temperature at which 5% weight loss occurs
by TGA in air at 5°C (41°F) rise per minute.
552°F(289°C)
Aluminum
Typical Cured Characteristics
Property
Test Condition
Room
Temperature
Table continued on next page
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear
Typical Cured Characteristics (continued)
Property
Thermal Shock
Resistance
Values
Method
Pass 5 cycles
without cracking
3M C3174
Dwell/Cure Time
Notes
Test Condition
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.
Potted Washer
Olyphant Test,
100°C [air] to
-50°C [liquid]
Typical Performance Characteristics
Elongation: 120 %
Conditions
Dwell/Cure Time: 2 hr Room Temperature, plus 2 hr @ 160°F(71°C)
Methods
ASTM D882
Additional Information
notes: Samples were 2 in. dumbbells with .0125 in. neck and .030 in. sample thickness. Separation rate was 2 inches per minute.
Overlap Shear Strength
Substrate
2000 lb/in²
Etched Aluminum
1500 lb/in²
Sanded Aluminum (60 grit)
1300 lb/in²
Cold Rolled Steel
300 lb/in²
Wood - Fir
200 lb/in²
Glass
250 lb/in²
Glass with 3M™ Scotch-Weld™ Primer EC3901
400 lb/in²
Polycarbonate (PC)
250 lb/in²
Acrylic (PMMA)
1400 lb/in²
Fiberglass Reinforced Plastic
300 lb/in²
ABS
520 lb/in²
Polyvinyl chloride (PVC)
80 lb/in²
Polypropylene (PP)
Property: Overlap Shear Strength
Method: ASTM D1002
Dwell/Cure Time: 24 hr @ Room Temperature + 2 hr @ 160°F(71°C)
Test Condition : Room Temperature
Substrate Notes: 0.005-0.008in bondline
notes: 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 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 DP105 Clear
Typical Performance Characteristics (continued)
Environmental Resistance (OLS)
Dwell/Cure Time
2000 lb/in²
24 hr @ Room Temperature + 2 hr @ 160°F(71°C)
2200 lb/in²
24 hr @ Room Temperature + 2 hr @ 240°F(116°C)
1800 lb/in²
1 wk Room Temperature + 1 wk @ 90°F(32°C)/90% RH
3000 lb/in²
1 wk Room Temperature + 1 wk 248°F(120°C)
2000 lb/in²
1 wk Room Temperature + 1 wk H2O immersion
Property: Environmental Resistance (OLS)
Method: ASTM D1002
Test Condition : Room Temperature
Substrate: Etched Aluminum
Substrate Notes: 0.005-0.008in bondline
notes: 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 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.
Overlap Shear Strength (at Temperature)
Test Condition
3500 lb/in²
-67°F(-55°C)
2000 lb/in²
Room Temperature
400 lb/in²
120°F(49°C)
250 lb/in²
150°F(66°C)
150 lb/in²
180°F(82°C)
Property: Overlap Shear Strength (at Temperature)
Method: ASTM D1002
Dwell/Cure Time: 24 hr @ Room Temperature + 2 hr @ 160°F(71°C)
Substrate: Etched Aluminum
Substrate Notes: 0.005-0.008in bondline
notes: 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 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.
T-Peel Adhesion
Test Condition
3 lb/in width
-67°F(-55°C)
35 lb/in width
Room Temperature
5 lb/in width
120°F(49°C)
2 lb/in width
150°F(66°C)
1 lb/in width
180°F(82°C)
Property: T-Peel Adhesion
Method: ASTM D1876
Dwell/Cure Time: 24 hr @ Room Temperature + 2 hr @ 160°F(71°C)
Substrate: Etched Aluminum
Substrate Notes: 0.005-0.008in bondline
notes: 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.
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear
Typical Performance Characteristics (continued)
Solvent Resistance
Environmental Condition
A
Immersed in Acetone one hour
A
Immersed in Acetone one month
A
Immersed in Isopropyl Alcohol one hour
A
Immersed in Isopropyl Alcohol one month
A
Immersed in Freon TF one hour
A
Immersed in Freon TF one month
A
Immersed in Freon TMC one hour
B
Immersed in Freon TMC one month
A
Immersed In 1, 1, 1 - Trichloroethane one hour
A
Immersed In 1, 1, 1 - Trichloroethane one month
A
Immersed in RMA Flux one hour
A
Immersed in RMA Flux one month
Property: Solvent Resistance
Dwell/Cure Time: 24 hr @ Room Temperature + 2 hr @ 160°F(71°C)
notes: Solvent resistance was determined using cured samples (1/2 in. x 4 in. x 1/8 in. thickness) immersed n 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 - Una ected - no change to color or
surface texture. B - Slight attack - noticeable swelling of surface. C - Moderate/severe attack - extreme swelling of surface.
Electrical and Thermal Properties
Glass Transition Temperature (Tg)
Test Condition
8 °C
46 °F
Onset
15 °C
59 °F
Mid-Point
Property: Glass Transition Temperature (Tg)
notes: Glass Transition Temperature (Tg) determined using DSC Analyzer with a heating rate of 68°F (20°C) per minute. Second heat values given.
Thermal Conductivity
0.35 × 10^-3 Cal/s/cm/°C
14.7 W/m/K
0.085 (btu-ft)/(h-ft²-°F)
Property: Thermal Conductivity
Method: C177
Test Condition : 110°F on .25 inch samples
notes: Thermal conductivity determined using C-matic Instrument using 2 in. diameter samples.
Property
Values
Method
Test Condition
Dielectric Constant
9.2
ASTM D150
1 KHz, Room Temperature
Dissipation Factor
0.22
ASTM D150
1 KHz, Room Temperature
Table continued on next page
Notes
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear
Electrical and Thermal Properties (continued)
Property
Values
Method
Dielectric Strength
465 V/mil
ASTM D149
Volume Resistivity
1.5 × 10^10 Ω-cm
ASTM D257
Coe cient of Thermal
Expansion
181 × 10^-6 m/m/°C
Test Condition
Notes
Sample Thickness Approx. 30 mil.
Room Temperature
Above Tg(40-140°C
range)
TCE determined using Dupont TMA Analyzer
using a heating rate of 50°F (10°C) per minute.
Second heat values given.
Handling/Application Information
Directions for Use
1. For high strength structural bonds, paint, oxide lms, 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. For speci c surface
preparations on common substrates, see the following section on Surface Preparation.
2. Uses gloves to minimize skin contact. Do not use solvents for cleaning hands.
3. Mixing
For Duo-Pak Cartridges
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear is supplied in a dual syringe plastic Duo-Pak cartridge as part of the 3M™ Scotch-Weld™ 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 DuoPak cartridge cap and expel a small amount of adhesive to be sure both sides of the Duo-Pak cartridge are owing evenly and freely. If automatic mixing of Part A and
Part B is desired, attach the EPX mixing nozzle to the Duo- Pak cartridge and begin dispensing the adhesives. 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 speci ed 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 rm. Heat up to 200°F (93°C), will speed curing. These products will
cure in 48 hours @ 75°F (24°C).
7. Keep parts from moving during cure. Contact pressure is necessary. Maximum shear strength is obtained with a 3-5 mil bond line.
8. Excess uncured adhesive can be cleaned up with ketone type solvents.*
Adhesive Coverage: A 0.005 in. thick bondline will yield a coverage of 320 sqft/ gallon.
*Note: When using solvents, extinguish all ignition sources and follow the manufacturer’s precautions and directions for use.
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear
Handling/Application Information (continued)
Surface Preparation
For high strength structural bonds, paint, oxide lms, 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 the 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 ne 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. Vapor Degrease: 3M™ Novec™ condensing vapors for 5-10 minutes.
2. 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.
3. 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
4. Rinse: Rinse panels in clean running tap water.
5. Dry: Air dry 15 minutes; force dry 10 minutes at 150°F ± 10°F (66°C ± 5°C).
6. If primer is to be used, it should be applied within 4 hours after surface preparation.
Plastics/Rubber:
1. Wipe with isopropyl alcohol.*
2. Abrade using ne grit abrasives.
3. Wipe with isopropyl alcohol.*
Glass:
1. Solvent wipe surface using acetone or MEK.*
*Note: When using solvents, extinguish all ignition sources and follow the manufacturer’s precautions and directions for use.
• For small or intermittent applications the 3M™ Scotch-Weld™ EPX™ Applicator is a convenient method of application.
• For larger applications, these products may be applied by use of ow 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 ow rate characteristics and are adaptable to many applications.
Storage and Shelf Life
Store 3M™ Scotch-Weld™ Epoxy Adhesive DP-105 Clear at 60-80°F (15-27°C) for maximum shelf life.
These epoxy adhesive products have a shelf life of 24 months in their unopened bulk containers. Shelf life is determined from the date of manufacture.
Trademarks
3M, Scotch-Weld, Novec and EPX are trademarks of 3M Company.
References
1. 3m.com Product Page
Url: http://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Scotch-Weld-Epoxy-Adhesive-DP105?N=5002385+3293242301&rt=rud
2. Safety Data Sheet
Url: https://www.3m.com/3M/en_US/company-us/SDS-search/results/?gsaAction=msdsSRA&msdsLocale=en_US&co=ptn&q=DP105 Clear
ISO Statement
This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 standards.
3M™ Scotch-Weld™ Epoxy Adhesive DP105 Clear
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 1800-364-3577 or (651) 737-6501.
Technical Information
The technical information, guidance, and other statements contained in this document or otherwise provided by 3M are based upon records, tests, or experience that
3M believes to be reliable, but the accuracy, completeness, and representative nature of such information is not guaranteed. Such information is intended for people
with knowledge and technical skills su cient to assess and apply their own informed judgment to the information. No license under any 3M or third party intellectual
property rights is granted or implied with this information.
Product Selection and Use
Many factors beyond 3M’s control and uniquely within user’s knowledge and control can a ect the use and performance of a 3M product in a particular application.
As a result, customer is solely responsible for evaluating the product and determining whether it is appropriate and suitable for customer’s application, including
conducting a workplace hazard assessment and reviewing all applicable regulations and standards (e.g., OSHA, ANSI, etc.). Failure to properly evaluate, select, and
use a 3M product and appropriate safety products, or to meet all applicable safety regulations, may result in injury, sickness, death, and/or harm to property.
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Unless a di erent warranty is speci cally stated on the applicable 3M product packaging or product literature (in which case such warranty governs), 3M warrants that
each 3M product meets the applicable 3M product speci cation at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
ARISING OUT OF A COURSE OF DEALING, CUSTOM, OR USAGE OF TRADE. If a 3M product does not conform to this warranty, then the sole and exclusive remedy
is, at 3M’s option, replacement of the 3M product or refund of the purchase price.
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Except for the limited remedy stated above, and except to the extent prohibited by law, 3M will not be liable for any loss or damage arising from or related to the 3M
product, whether direct, indirect, special, incidental, or consequential (including, but not limited to, lost pro ts or business opportunity), regardless of the legal or
equitable theory asserted, including, but not limited to, warranty, contract, negligence, or strict liability.
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