MIL-PRF-85582 Primer Coatings: Epoxy, Waterborne

MIL-PRF-85582 Epoxy Primer is a two-component chemically cured waterborne primer that forms a film that is resistant to chemicals, solvents, moisture, and abrasion. This product has excellent adhesion to most substrates and is recommended for use as a primer under aliphatic polyurethane topcoats in aerospace applications.

SKU: 85582. Category: . Tags: , , , .

Product Description

This specification covers the requirements for corrosion inhibiting, chemical and solvent resistant, waterborne, epoxy primer coatings that have a maximum volatile organic compound (VOC) content of 340 grams per liter (g/L) (2.8 pounds per  gallon [lb/gal]) as supplied by the manufacturer. This specification is approved for use by all Departments and Agencies of the Department of Defense.

 

Composition

The primer coating shall consist of two components, as follows:

Component A – a base component of epoxy resin solution
Component B – a curing agent

Classification

The primer coatings will be of the following types and classes, as specified:


Types: The types of primer coatings are as follows:

Type I – Standard pigments
Type II – Low infrared reflective pigments


Classes: The classes of primer coatings are as follows:

Class C1 – Barium chromate based corrosion inhibitors
Class C2 – Strontium chromate based corrosion inhibitors
Class N – Non-chromate based corrosion inhibitors


Pigment: The pigment of the primer coating shall be contained in component A or B.

Class C1. Primer coatings containing barium chromate based corrosion inhibitors, along with extenders and other pigments, as required, shall be identified as class C1.
Class C2. Primer coatings containing strontium chromate conforming to ASTM D1649 as the corrosion inhibitor, along with extenders and other pigments, as required, shall be identified as class C2.
Class N. Primer coatings containing non-chromium corrosion inhibitors, along with extenders and other pigments, shall be identified as class N. Incidental hexavalent chromium content of class N primers shall be not greater than 5 ppm.


Volatile organic compound (VOC) content. The volatile organic compound (VOC) content of the admixed primer coating shall be not greater than 340 g/L (2.8 lb/gal) of coating, excluding water.


Color

Type I. The color of the admixed type I primer coatings shall be the natural color of the corrosion inhibiting pigments used. Tinting to a different shade is permitted.
Type II. The color of the admixed type II primer coating shall be dark green, black, or gray.


PROPERTIES:

SOLIDS(Weight)………………………. 70% Minimum
SOLIDS(Pigment)……………………… 50% Minimum
THIN WITH………………………………… Water
COLORS………………………. 34151 & 34052 Green
POT LIFE(77 degrees F)………………. 4 – 6 Hours*
TACK FREE……………………………… 1 Hours*
DRY HARD………………………………. 6 Hours*

* Higher temperatures will accelerate dry times and decrease pot life, lower temperatures will lengthen cure times and slightly increase pot life.

» Military Performance Specification MIL-PRF-85582
» Technical Data Sheet (TDS) – MIL-PRF-85582

Also Known As:

» 85582
» MIL-PRF-85582A
» MIL-PRF-85582B
» MIL-PRF-85582C
» MIL-PRF-85582D
» QPL-85582

SURFACE PREPARATION

Surface to be coated must be clean, dry, and free of all foreign contaminants including grease, oil, dirt and loose paint. Abrasive blasting is recommended where applicable. Dirt and dust are best removed with a stiff bristle brush and by compressed air. Grease and oil should be removed by cleaning with appropriate solvents such as mineral spirits, lacquer wash thinner or xylene.
APPLICATION AND REDUCTION

Each of the two components should be thoroughly mixed separately. Component B is then slowly poured into Component A with constant stirring until a one-to-one ratio is achieved. Mix components into the Comp.A can and the Comp.B can  to intermix both components. Mix thoroughly and allow to stand 30 minutes before using. Thin with distilled water or clean tap water if necessary. Apply a mist coat and allow to dry 30 minutes. Apply a second coat to a total dry film thickness of  0.6 to 0.9.