3M Scotch-Weld™ DP920 Epoxy Adhesive

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3M Scotch-Weld™ DP920 Epoxy Adhesive
Categories:	Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive
Material Notes:	3M™ Scotch-Weld™ Epoxy Adhesive DP920 is a two-part, 2:1 mix ratio, toughened epoxy structural adhesive with a 20 minute work life. It exhibits excellent shear and peel strengths along with good impact and durability; and bonds well to oily metal substrates with minimal surface preparation. Information provided by 3M
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Physical Properties	Original Value	Comments

Brookfield Viscosity	18000 cP	Accelerator, RFV #7 at 20 rpm
	110000 cP	Base, RFV #7 at 20 rpm

Mechanical Properties	Original Value	Comments
Hardness, Shore D	70 - 75
Shear Strength	410 psi	Overlap, Acrylic (PMMA) (IPA/abrade/IPA), Adhesive Failure; ASTM D1002
	480 psi	Overlap, Polystyrene (HIPS) (IPA/abrade/IPA), Adhesive Failure/Substrate Failure; ASTM D1002
	540 psi	Overlap, Polycarbonate (IPA/abrade/IPA), Adhesive Failure; ASTM D1002
	590 psi	Overlap, ABS (IPA/abrade/IPA), Adhesive Failure; ASTM D1002
	720 psi	Overlap, PVC (IPA/abrade/IPA), Adhesive Failure/Substrate Failure; ASTM D1002
	760 psi	Overlap, Aluminum, RT cure for 5 hrs; ASTM D1002
	950 psi	Overlap, Aluminum, RT cure for 6 hrs; ASTM D1002
	1500 psi	Overlap, Phenolic (IPA/abrade/IPA), Substrate Failure; ASTM D1002
	2200 psi	Overlap, CRS - with Multidraw KTL N16 Deep Draw Lube Oil, Cohesive failure/Adhesive Failure; ASTM D1002
	2200 psi	Overlap, CRS - with Preton R303 PX2, Cohesive failure/Adhesive Failure; ASTM D1002
	2300 psi	Overlap, Galvanized Aluminum (MEK/abrade/MEK), Adhesive Failure; ASTM D1002
	2400 psi	Overlap, CRS - with Ferrocote 6130 Draw Lube, Cohesive failure/Adhesive Failure; ASTM D1002
	2600 psi	Overlap, Aluminum, 49°C for 1 hr; ASTM D1002
	2700 psi	Overlap, CRS - MEK/abraded/MEK, Cohesive failure; ASTM D1002
	3100 psi	Overlap, Copper (MEK/abrade/MEK), Cohesive failure/Adhesive Failure; ASTM D1002
	3360 psi	Overlap, Aluminum-etched, with KTLN Deep Draw Lue Oil, Cohesive failure; ASTM D1002
	3400 psi	Overlap, FRP (Green) (IPA/abrade/IPA), Adhesive Failure/Cohesive Failure; ASTM D1002
	3500 psi	Overlap, Stainless Steel (MEK/abrade/MEK), Cohesive failure/Adhesive Failure; ASTM D1002
	3500 psi	Overlap, Etched Aluminum, MEK at RT for 30 days immersion, Cohesive Failure
	3500 psi	Overlap, Etched Aluminum, Gasoline at RT for 30 days immersion, Cohesive Failure
	3600 psi	Overlap, Etched Aluminum, 5% Salt solution for 14 days, Cohesive Failure
	3700 psi	Overlap, Etched Aluminum, 65°C/80% RH for 30 days, Cohesive Failure
	3800 psi	Overlap, Brass (MEK/abrade/MEK), Cohesive failure/Adhesive Failure; ASTM D1002
	4000 psi	Overlap, Aluminum-etched, Cohesive failure; ASTM D1002
	4000 psi	Overlap, Etched Aluminum, Isopropanol at RT for 30 days immersion, Cohesive Failure
	4200 psi	Overlap, Aluminum, 60°C for 1 hr; ASTM D1002
	4500 psi	Overlap, Etched Aluminum, RT, DI Water 30 days immersion, Cohesive Failure
	4500 psi	Overlap, Etched Aluminum, 10W30 Motor Oil at RT for 30 days immersion, Cohesive Failure
	4500 psi	Overlap, Etched Aluminum, -40°C/38°C and 100% RH/90°C; for 30 days, Cohesive Failure
	4600 psi	Overlap, Aluminum, RT cure for 24 hrs; ASTM D1002
	4600 psi	Overlap, Aluminum, 49°C for 2 hrs; ASTM D1002
	4700 psi	Overlap, Etched Aluminum, 50% Antifreeze at RT for 30 days immersion, Cohesive Failure
	4800 psi	Overlap, Etched Aluminum, RT, 50% for 30 days, Cohesive Failure
	4800 psi	Overlap, Etched Aluminum, Diesel Fuel at RT for 30 days immersion, Cohesive Failure
	4900 psi	Overlap, Etched Aluminum, 80°C for 30 days, Cohesive Failure
	5700 psi	Overlap, Aluminum, 49°C for 3 hrs; ASTM D1002
	5800 psi	Overlap, Aluminum, 60°C for 2 hrs; ASTM D1002
	3800 psi @Temperature -55.0 °C	Overlap, Aluminum
	4000 psi @Temperature 23.0 °C	Overlap, Aluminum
	500 psi @Temperature 121 °C, Time 900 sec	Overlap, Aluminum
	800 psi @Temperature 82.0 °C, Time 900 sec	Overlap, Aluminum
	800 psi @Temperature 82.0 °C, Time 1800 sec	Overlap, Aluminum
	850 psi @Temperature 82.0 °C, Time 3600 sec	Overlap, Aluminum
	950 psi @Temperature 82.0 °C, Time 14400 sec	Overlap, Aluminum
Peel Strength	23.0 pli	Bell Peel Adhesion, CRS, with KTL N16 Deep Draw Lube Oil, Cohesive Failure; ASTM D3167
	30.0 pli	Bell Peel Adhesion, Aluminum Etched, with KTL N16 Deep Draw Lube Oil, Cohesive Failure; ASTM D3167
	32.0 pli	Bell Peel Adhesion, Aluminum Etched, Cohesive Failure; ASTM D3167
	7.00 pli @Temperature 82.0 °C	Bell Pell Adhesion, Aluminum Etched, Adhesive Failure; ASTM D3167
	20.0 pli @Temperature -55.0 °C	Bell Pell Adhesion, Aluminum Etched, Cohesive Failure; ASTM D3167
	32.0 pli @Temperature 23.0 °C	Bell Pell Adhesion, Aluminum Etched, Cohesive Failure; ASTM D3167

Electrical Properties	Original Value	Comments
Volume Resistivity	8.40e+14 ohm-cm	ASTM D257
Dielectric Strength	496 kV/in	ASTM D149

Processing Properties	Original Value	Comments
Cure Time	4.00 hour	Time to Handling Strength
	48.0 hour	Full Cure

Descriptive Properties
Appearance	Off-white	Base
	Pale yellow
	Yellow	Accelerator

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