DP420-BLACK-1.25OZ 3M, DP420-BLACK-1.25OZ Datasheet - Page 7

• Manufacturer Part Number: DP420-BLACK-1.25OZ
• Description: Chemicals 1.25oz BLACK 2-PART
• Manufacturer: 3M

Specifications of DP420-BLACK-1.25OZ

• Product: Adhesives
• Other names: 02120041528 62277814356 DP420-BLACK-1.25OZ

Surface Preparation
3M
Epoxy Adhesive
DP420 Black • DP420 NS Black • DP420 Off-White • DP420 LH
Handling/Application
Information
™
Scotch-Weld
The following surface preparations were used for substrates described in this Technical
Data Sheet.
A. Aluminum Etch
Directions for Use
3M™ Scotch-Weld™ Epoxy Adhesive DP420 is supplied in dual syringe plastic duo-
pak cartridges as part of the 3M™ EPX™ Applicator System. The duo-pak cartridges
are supplied in 37 ml, 200 ml and 400 ml configurations. To use the EPX cartridge
system simply insert the duo-pak cartridge into the EPX applicator. Next, remove the
duo-pak cartridge cap and expel a small amount of adhesive to be sure both sides of
the duo-pak cartridge are flowing evenly and freely. If simultaneous mixing of Part A
and Part B is desired, attach the EPX mixing nozzle to the duo-pak cartridge and
begin dispensing the adhesive.
When mixing Part A and Part B manually the components must be mixed in the ratio
indicated in the typical uncured properties section of this data sheet. Complete
mixing of the two components is required to obtain optimum properties.
Two-part mixing/proportioning/dispensing equipment is available for intermittent or
production line use. These systems are ideal for line uses because of their variable
shot size and flow rate characteristics and are adaptable to most applications.
Apply adhesive to clean, dry surfaces, joint parts and secure until adhesive sets (see
rate of strength build up).
™
Optimized FPL Etch - 3M (test method C-2803)
1. Alkaline degrease – Oakite 164 solution (9-11 oz./gallon water) at 190°F ±
2. Optimized FPL Etch Solution (1 liter):
3. Rinse immediately in large quantities of clear running tap water.
10°F (88°C ± 5°C) for 10-20 minutes. Rinse immediately in large quantities
of cold running water (3M test method C-2802).
Material
Distilled Water
Sodium Dichromate
Sulfuric Acid
Aluminum Chips
To prepare 1 liter of this solution, dissolve sodium dichromate in 700 ml of
distilled water. Add sulfuric acid and mix well. Add additional distilled water
to fill to 1 liter. Heat mixed solution to 66 to 71°C (150 to 160°F). Dissolve
1.5 grams of 2024 bare aluminum chips per liter of mixed solution. Gentle
agitation will help aluminum dissolve in about 24 hours.
To FPL etch panels, place them in the above solution at 150 to 160°F (66 to
71°C) for 12 to 15 minutes.
Note: Review and follow precautionary information provided by chemical
suppliers prior to preparation of this etch solution.
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Amount
700 ml plus balance of liter (see below)
28 to 67.3 grams
287.9 to 310.0 grams
1.5 grams/liter of mixed solution