SSPC PS 26 00-2000 Aluminum Pigmented Epoxy Coating System Materials Specification Performance-Based Type I for Use Over Blast Cleaned Steel Type II for Use Over Hand Cleaned Steel.pdf

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1、SSPC-PS 26.00June 1, 2000Editorial Revisions November 1, 20045-1511. Scope1.1 This specifi cation covers the requirements for an ambient temperature cure, two-component aluminum pigmented epoxy coating that is intended for use as a single or multi-coat system on steel.1.2 Coating systems meeting thi

2、s specifi cation are suitable for exposures in environmental zones 1A (interior, normally dry), 1B (exterior, normally dry), 2A (frequently wet by fresh water, excluding immersion), 2B (frequently wet by salt water, excluding immersion), and 3B (chemical exposure, neutral). (See Note 13.1.)1.3 The s

3、pecifi ed coating system is intended for applica-tion by brush, spray, or roller (See Note 13.2). Type I is for use over steel surfaces blast cleaned to SSPC-SP 6 or better (See Note 13.3.) Type II is for use over non-blast cleaned as well as blast cleaned steel surfaces, i.e., surfaces cleaned to S

4、SPC-SP 2 or better. (See Note 13.4.). For either Type I or Type II, the surface should be prepared in accordance with the manufacturers written recommendations.2. Description2.1 COMPONENTS2.1.1 This coating is typically based on a reactive oxirane (epoxy) functional resin with an amine or polyamide

5、functional curing agent. (See Section 4.)2.1.2 The principal functional pigment is aluminum paste or fl ake powder. (See Section 4.) 3. Referenced Standards3.1 The latest issue, revision, or amendment of the refer-enced standards in effect on the date of invitation to bid shall govern, unless otherw

6、ise specifi ed. Standards marked with an asterisk (*) are referenced only in the Notes, which are not requirements of this specifi cation.SSPC: The Society for Protective CoatingsCOATING SYSTEM NO. 26.00Aluminum Pigmented Epoxy Coating System Materials Specifi cation, Performance-BasedType I, for Us

7、e over Blast Cleaned SteelType II, for Use over Hand Cleaned Steel3.2 If there is a confl ict between the requirements of any of the cited referenced standards and this specifi cation, the requirements of this specifi cation shall prevail.3.3 SSPC STANDARDS AND JOINT STANDARDS:Guide 13 Guide for the

8、 Identifi cation and Use of Industrial Coating Systems in Computerized Product Data-basesME 1 Uncontaminated Rusted SteelPA 1 Shop, Field, and Maintenance Painting of SteelPA 2 Measurement of Dry Paint Thick-ness with Magnetic GaugesSP 1 Solvent Cleaning SP 2 Hand Tool Cleaning * SP 3 Power Tool Cle

9、aningSP 5/NACE No. 1 White Metal Blast CleaningSP 6/NACE No. 3 Commercial Blast Cleaning* SP 7/NACE No. 4 Brush-Off Blast Cleaning* SP 8 Pickling * SP 10/NACE No. 2 Near-White Blast Cleaning* SP 11 Power Tool Cleaning to Bare Metal * SP 12/NACE No. 5 Surface Preparation and Cleaning of Steel and Oth

10、er Hard Materials by High- and Ultrahigh-Pressure Water Jetting Prior to Recoating* SP 14/NACE No. 8 Industrial Blast CleaningVIS 2 Standard Method of Evaluating Degree of Rusting on Painted Steel Surfaces3.4 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) STANDARDS:A 36 Specifi cation for Carbon

11、Structural SteelA 607 Specifi cation for Steel, Sheet and Strip, High-Strength, Low-Alloy, Columbium or Vanadium, or Both, Hot-Rolled and Cold-Rolled (Withdrawn 2000)B 117 Standard Practice for Operating Salt Spray SSPC-PS 26.00June 1, 2000Editorial Revisions November 1, 20045-152(Fog) ApparatusD 52

12、2 Standard Test Methods for Mandrel Bend Test of Attached Organic Coatings* D 523 Standard Test Method for Specular GlossD 562 Standard Test Method for Consistency of Paints Using the Stormer-type ViscometerD 609 Standard Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Var-ni

13、sh, Conversion Coatings, and Related Coating ProductsD 660 Standard Test Method for Evaluating Degree of Checking of Exterior PaintsD 661 Standard Test Method for Evaluating Degree of Cracking of Exterior PaintsD 714 Standard Test Method for Evaluating Degree of Blistering of PaintsD 962 Specifi cat

14、ion for Aluminum Powder and Paste Pigments for Paints* D 1296 Standard Test Method for Odor of Volatile Solvents and Diluents* D 1475 Standard Test Method for Density of Liquid Coatings, Inks, and Related Products* D 1535 Standard Practice for Specifying Color by the Munsell System * D 1640 Standard

15、 Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room TemperatureD 1654 Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments* D 2369 Standard Test Method for Volatile Content of Coatings* D 2371 Standard Test Method for Pigm

16、ent Content of Solvent-Reducible Paints* D 2621 Standard Test Method for Infrared Identifi ca-tion of Vehicle Solids from Solvent-Reducible Paints D 3359 Standard Test Methods for Measuring Adhe-sion by Tape TestD 3924 Specifi cation for Standard Environment for Conditioning and Testing Paint, Varni

17、sh, Lacquer, and Related MaterialsD 3925 Standard Practice for Sampling Liquid Paints and Related Pigmented CoatingsD 4417 Standard Test Methods for Field Measure-ment of Surface Profi le of Blast Cleaned SteelD 4585 Standard Practice for Testing the Water Resistance of Coatings Using Controlled Con

18、densation D 5894 Standard Practice for Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating Exposures in a Fog/Dry Cabinet and a UV/Condensation Cabinet)3.5 AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) STANDARD:Z129.1 Hazardous Industrial Chemicals-Precautionary Labeling3.6 NACE INTERNATIONAL

19、(NACE) STANDARD:RP0287 Field Measurement of Surface Profi le of Abrasive Blast Cleaned Steel Surfaces Using a Replica Tape 3.7 FEDERAL SPECIFICATIONS AND STAN-DARDS:FED-STD-141 Paint, Varnish, Lacquer and Related Ma-terials: Methods of Inspection, Sampling and Testing Method 3011 Condition in Contai

20、nerMethod 4321 Brushing Properties Method 4331 Spraying Properties Method 4541 Working Properties and Appearance of Dried Film (Canceled)4. Composition Requirements4.1 The manufacturer is given wide latitude in the selection of materials and manufacturing processes.4.2 ALUMINUM REQUIREMENT: The alum

21、inum metal used shall be certifi ed as meeting ASTM D 962 and shall constitute a minimum of 6.0% by weight of the dried fi lm.4.3 RESIN REQUIREMENT: The epoxy resin together with the curing agent, as described in Section 2.1.1, shall constitute at least 60% by weight of total solids. (See Note 13.5.

22、)4.4 PIGMENT REQUIREMENT: Lead or chromate based pigments are prohibited. 5. Standard Testing Conditions5.1 ATMOSPHERIC CONDITIONS: When testing the paint and its application, the conditions under which it is applied and cured shall conform to ASTM D 3924.5.2 SUBSTRATE: The hot rolled steel test pan

23、els shall conform to ASTM A 36 (See Note 13.6).5.3 TEST PANELS: There are two kinds of standard test panels: blast cleaned panels (Section 5.3.1) and standard rusted panels (Section 5.3.2). Panel size shall be 100 mm x 150 mm x 3.2 mm (4 inch x 6 inch x 1/8 inch) or greater.SSPC-PS 26.00June 1, 2000

24、Editorial Revisions November 1, 20045-1535.3.1 Blast Cleaned Panels: Blast cleaned panels are used for laboratory physical testing (Section 7) and for the accelerated laboratory weathering tests (Section 8) of Type I coatings for use over blast cleaned steel. Test panels shall be solvent cleaned in

25、accordance with SSPC-SP 1 prior to blast cleaning. The test panels shall be blast cleaned in ac-cordance with SSPC-SP 5/NACE No. 1 and have a profi le of 50 25 micrometers (2.0 1 mil). Measure the blast profi le in accordance with ASTM D 4417 or NACE RP0287.5.3.2 Standard Rusted Panels: For the acce

26、lerated laboratory weathering tests (Section 8) of Type II coatings for use over hand tool cleaned steel, the unpainted test panels shall be prepared in accordance with SSPC-ME 1.5.4 APPLICATION: Thoroughly mix together both com-ponents of the coating following the manufacturers written instructions

27、. Allow the mixture to stand for the manufacturers specifi ed induction time, if stated. Apply the coating by spray at the atmospheric conditions described in Section 5.1 in accordance with SSPC-PA 1.5.5 DRY FILM THICKNESS: The dry fi lm thickness (DFT) shall be within the manufacturers written reco

28、mmended range per coat and shall not exceed the stated minimum by more than 50 micrometers (2 mils). If there is no recommended fi lm thickness, then the thickness shall be 125 25 micrometers (5 1 mils) per coat for a two-coat system and 250 50 micrometers (10 2 mils) for a one-coat system. For the

29、two-coat system, the second coat shall be applied within 18 to 30 hours after application of the fi rst coat, unless specifi ed otherwise by the manufacturer. In either case the fi lm thickness shall be measured in accordance with SSPC-PA 2.5.6 CURE: All coated panels to be tested will be allowed to

30、 cure for a minimum of seven days under ambient laboratory conditions after application of the fi nal coat before physical testing is to begin.5.7 SCRIBING: Scribe two parallel lines on the face of the coated panels so as to expose the underlying metal before testing. The lines shall be at least 2.5

31、 cm (1 inch) from the edge, the top, and the bottom of each panel and at least 5 cm (2 inches) from each other. Each scribe shall be at least 6 cm (2.4 inches) long. The scribes may run vertically or at an angle across the face of the panel. Follow the scribe-making procedure described in ASTM D 165

32、4.6. Requirements of Liquid Coating6.1 PACKAGE STABILITY: Perform the following tests: Measure the viscosity of each component of the coating in accordance with ASTM D 562. Then place each component in an appropriate closed container (i.e., a lined metal or plastic can) in an oven at 52 1C (125 2F).

33、 After 30 days, remove the coating from the oven and measure the viscosity of each component of the coating in accordance with ASTM D 562. The change in viscosity shall not exceed 10 Krebs units (KU). After mixing the aforementioned aged components according to manufacturers written instructions and

34、 brushing out, the fi lm shall be free from grains, lumps, or streaks.6.2 MECHANICAL STABILITY: Test individual packages of the two pack system separately. Fill a one liter (one quart) friction top can three-fourths full and secure tightly. In an en-vironment at room temperature, rotate on a jar rol

35、ler for one week at 120 to 170 rpm. At the end of one week, there shall be no separation, coagulation, excessive thickening, loss in mechanical stability, or changes in viscosity greater than 10 KU.6.3 POT LIFE: Thoroughly mix components to yield one liter (one quart) of prepared coating. Allow the

36、mixed coating to stand at atmospheric conditions described in Section 5.1 for the pot life time specifi ed by the manufacturer. At the end of this time period, the coating shall show no evidence of gela-tion, and still meet the requirements of Sections 7.1 and 7.3.7. Laboratory Physical Tests of App

37、lied Films7.1 APPLICATION PROPERTIES: Thoroughly mix together both components of the coating. Allow the mixture to stand for the manufacturers specifi ed induction time, if stated. The paint shall be easily applied by brush, roller, or spray when tested in accordance with FED-STD-141, Methods 4321,

38、4331, and 4541. The paint shall show no streaking, running, or sagging during application or while drying.7.2 RECOAT TESTS: Coat a test panel in accordance with Sections 5.3.1, 5.4, 5.5, and 5.6. Apply one additional coat according to Sections 5.4 and 5.5. There shall be no picking up or rolling up

39、of the previous coat during application. After 24 hours, the subsequent fi lm shall be smooth and uniform (See Note 13.7).7.3 FILM INTEGRITY: Apply one coat of coating by the drawdown method in accordance with Sections 5.1, 5.3, 5.5 and 5.6. Mix coating per Section 5.4. Evaluate for checking and cra

40、cking in accordance with ASTM D 660 and D 661, respectively. Any checking or cracking rating of “8” or less is cause for rejection.7.4 FLEXIBILITY: Prepare three replicate panels accord-ing to Sections 5.1, 5.4, 5.5 and 5.6. The substrate shall be cold rolled strip 0.8 mm (1/32 inch) (22 gage) thick

41、. Recom-mended panel size is 100 mm x 150 mm (4 inch x 6 inch). Surface preparation shall be SSPC-SP 1. Test three replicate panels in accordance with ASTM D 522. The elongation of each replicate panel shall be a minimum of 7.0 percent using Test Method A; or, if Test Method B is used, each replicat

42、e panel must exhibit no cracking when bent over a 19 mm (3/4 inch) diameter mandrel.SSPC-PS 26.00June 1, 2000Editorial Revisions November 1, 20045-1548. Accelerated Laboratory Weathering Tests8.1 TEST PANEL PREPARATION: Prepare replicate panels in accordance with Section 5. For Type I coatings for u

43、se over blast cleaned steel, follow Section 5.3.1; for Type II coatings for use over hand tool cleaned steel, follow Section 5.3.2. Coat and seal all edges and the back side of each panel with a coating that will provide the necessary protection to these surfaces. The edges may become adequately cov

44、ered during application of the test coating.8.2 CONDENSING HUMIDITY CABINET TEST: Three replicate panels shall be exposed for 2000 hours in a conden-sation cabinet in accordance with ASTM D 4585.8.2.1 Rust Evaluation: After 2000 hours, each replicate panel shall have a minimum rust rating of 9 in ac

45、cordance with SSPC-VIS 2.8.2.2 Blister Evaluation: After 2000 hours, the blister rating of each replicate panel shall be no worse than No. 8 Few in accordance with ASTM D 714 (See Note 13.8).8.2.3 Scribe Undercutting Evaluation: After 2000 hours, on each replicate panel, the maximum rusting, blister

46、ing, or undercutting at the scribe as measured by ASTM D 1654 shall not exceed 3.2 mm (1/8 inch) from the center of the scribe at any point along the scribe.8.3 CYCLIC SALT FOG/UV EXPOSURE TEST: Six rep-licate panels shall be exposed for 2688 hours (16 weeks) in accordance with ASTM D 5894.8.3.1 Rus

47、t Evaluation: After 2688 hours (16 weeks), each replicate panel shall be rated in accordance with SSPC-VIS 2. The average of the six test panels rounded to the nearest whole number shall be 10. 8.3.2 Blister Evaluation: After 2688 hours, each replicate panel shall be rated in accordance with ASTM D

48、714. Four of the six replicate test panels must have a blister rating of 10 (no blisters) and the other two replicate panels must have a blister rating no worse than No. 8 Few (See Note 13.8).8.3.3 Scribe Undercutting Evaluation: After 2688 hours, on each replicate panel, measure by ASTM D 1654 the

49、maxi-mum rusting, blistering, or undercutting from the center of the scribe at any point along the scribe. Since there are two scribes on each panel, each panel will furnish two scribe data points. Compute the mean (average), x, and the standard deviation, s, of these 12 data points. The scribe undercutting test parameter, U, is the mean plus two standard deviations (U = x + 2s). The scribe undercutting test parameter, U, rounded to the nearest millimeter, shall be less than or equal to 20 mm.8.4 SALT FOG/HOT/COLD CYCLIC TEST8.4.1 Panel Preparation: Prepar