1、SSPC-Paint 42October 19, 20151SSPC: The Society for Protective CoatingsCoating Standard No. 42EPOXY POLYAMIDE/POLYAMIDOAMINE PRIMER, PERFORMANCE-BASED1. SCOPE1.1 This standard contains performance requirements for a two-component epoxy polyamide/polyamidoamine primer coating for use as a primer on b
2、last cleaned steel surfaces. Individual products meeting minimum performance requirements of this standard may vary in formulation, raw materials, and application characteristics.1.2 This primer, when properly applied and cured, is suitable for use on steel surfaces in SSPC Environmental Zones 2A (f
3、requently wet by fresh water), 2B (frequently wet by salt water), 3A (chemical, acidic), 3B (chemical, neutral), and 3C (chemical, alkaline).1Although the coating herein specified has exhibited good chemical protection, its resistance against specific chemicals should, in the absence of applicable c
4、ase histories, be appropriately tested.1.3 This coating is intended for application by brush, spray, or roller for use as a primer in a multi-coat system.2. DESCRIPTION2.1 This standard contains performance requirements for a two-component polyamide and or polyamidoamine cured epoxy coating for use
5、in the architectural and industrial environments described in Section 1.2 above.3. REFERENCED STANDARDS 3.1 The date of the referenced standard in effect at the time of publication of this standard is shown below. Upon mutual agreement, the latest revision of a referenced standard in effect on the d
6、ate of invitation to bid may be used provided it does not change the technical requirements of this SSPC standard. Standards marked with an asterisk (*) are referenced only in the Notes, which are not requirements of this standard 3.2 If there is a conflict between the requirements of any of the cit
7、ed reference documents and this standard, the requirements of this standard shall prevail.1 SSPC Environmental Zones are defined in “Using SSPC Coating Material Standards,” available as a downloadable .pdf file from 3.3 SSPC STANDARDS AND JOINT STANDARDS:SSPC-Guide 13 (2004) Guide for the Identifica
8、tion and Use of Industrial Coating Materials in Computerized Product Databases SSPC PA 2 (2015) Procedure for Determining Compliance to Dry Coating Thickness RequirementsSSPC PA 15 (2013) Material and Preparation Requirements for Steel Test Panels Used to Evaluate the Performance of Industrial Coati
9、ngsSSPC-PA 16 (2012) Method for Evaluating Scribe Undercutting on Coated Steel Test Panels Following Corrosion Testing SSPC SP 1 (2015) Solvent CleaningSSPC VIS 2 (2002) Standard Method for Evaluating Degree of Rusting on Painted Steel Surfaces3.4 ASTM INTERNATIONAL STANDARDS:2D522-13 Standard Test
10、Methods for Mandrel Bend Test of Attached Organic Coatings* D523-14 Standard Test Method for Specular Gloss* D562-10(2014) Standard Test Method for Consistency of Paints Using the Stormer Viscometer D660-93(2011) Standard Test Method for Evaluating Degree of Checking of Exterior Paints2 ASTM Interna
11、tional, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standards volume information, refer to the standards Document Summary page on the ASTM we
12、bsite.SSPC SP 5/ NACE No. 1 (2007)White Metal Blast CleaningSSPC SP 6/ NACE No. 3 (2007)Commercial Blast CleaningSSPC-Paint 42October 19, 20152D661-93(2011) Standard Test Method for Evaluating Degree of Cracking of Exterior PaintsD714 02-(2009) Standard Test Method for Evaluating Degree of Blisterin
13、g of Paints * D1296-01(2012) Standard Test Method for Odor of Volatile Solvents and DiluentsD1308(2013) Standard Test Method for Effect of Household Chemicals on Clear and Pigmented Organic Finishes* D1475-13 Standard Test Method for Density of Liquid Coatings, Inks, and Related Products* D1535-14 S
14、tandard Practice for Specifying Color by the Munsell System* D1640-14 Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room Temperature * D1652-11e1 Standard Test Method for Epoxy Content of Epoxy ResinsD1735-14 Standard Practice for Testing Water Resistance of Coatings Usin
15、g Water Fog ApparatusD1849-05(2014)e1 Standard Test Method for Package Stability of Paint* D2621-87(2011) Standard Test Method for Infrared Identification of Vehicle Solids From Solvent-Reducible Paints* D2369-10(2015)e1 Standard Test Method for Volatile Content of Coatings* D2371-85(2010) Standard
16、Test Method for Pigment Content of Solvent-Reducible PaintsD2794-93(2010) Standard Test Method for Resistance of Organic Coatings to Effect of Rapid Deformation (Impact)D3363-05(2011) Standard Test Method for Film Hardness by Pencil TestD4417-14 Standard Test Methods for Field Measurement of Surface
17、 Profile of Blast Cleaned SteelD4541-09e1 Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion TestersD4585-13 Standard Practice for Testing Water Resistance of Coatings Using Controlled CondensationD5402-15 Standard Practice for Assessing the Solvent Resistance of Organic
18、Coatings Using Solvent RubsD5894-10 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 FEDERAL SPECIFICATIONS AND STANDARDS:3FEDERAL TEST METHOD STANDARD 141* Method 3011 Condition in ContainerMethod 4331
19、.2 Spraying PropertiesMethod 4321.3 Brushing Properties3.6 UNITED NATIONS STANDARD4GHS (2013) Globally Harmonized System of Classification and Labelling of Chemicals (GHS), 5th Revised Edition.4. COMPOSITION REQUIREMENTS4.1 The base component of the coating shall contain an epoxy resin and may inclu
20、de color pigments, mineral fillers, thixotropes, leveling agents and volatile solvents. The epoxy resin shall be a di-epoxide condensation product of epichlorohydrin with terminal epoxide groups.54.2 The curing agent component of the coating shall contain a liquid type polyamide/polyamidoamine resin
21、 and may include color pigments, mineral fillers, thixotropes, leveling agents and volatile solvents (see Note 11.1). The polyamide/polyamidoamine resin shall be a condensation product of dimerized and/or monofunctional fatty acids and polyamines. 4.3 ANALYTICAL TEST DATA: If required, the coating m
22、anufacturer shall provide certificates of analysis for coating batches qualified by independent testing to meet this standard for use in verifying batch-to-batch consistency of material (see Note 11.2). 5. STANDARD TESTING CONDITIONS 5.1 TEST PANELS: Unless otherwise specified, test panels shall com
23、ply with requirements of SSPC-PA 15, and profile compliance shall be determined in accordance with Method B or Method C of ASTM D4417. The method used shall be reported.Panels used for the flexibility test described in Section 7.4 shall meet requirements of ASTM D522.5.2 APPLICATION: The coating sha
24、ll be spray applied as a single coat in accordance with requirements of the manufacturers product data sheet. 5.3 DRY FILM THICKNESS: The dry film thickness (DFT) of the test panels shall meet the manufacturers recommended range. The DFT shall be measured in accordance with SSPC-PA 2, Level 3 Append
25、ix 5. 3 Federal Test Method 141D is available online from . (Search for 141D).4 United Nations Economic Commission for Europe, Transport Division, Palais des Nations, CH - 1211 Geneva 10, Switzerland. Copies of this standard may be obtained from the United Nations Publications Customer Service, Nati
26、onal Book Network, 15200, 15200 NBN Way, Ridge Summit PA 17124 5 The epoxy component should be an epoxy resin with a functionality of 1 or higher.SSPC-Paint 42October 19, 201535.4 CURE: Unless otherwise specified by tests in this standard, the coating shall be dried and cured at a temperature betwee
27、n 20 and 25 C (68 and 77 F) for a minimum of 7 days, maximum 45 days (report cure time prior to exposure) in an environment maintaining a relative humidity between 40 and 60 percent.5.5 SCRIBING: Scribes shall be made in accordance with SSPC-PA 15 unless otherwise specified.6. REQUIREMENTS OF LIQUID
28、 COATING6.1 MIXING: Each coating component shall be stirred to a smooth homogenous mixture by mechanical mixing in accordance with the manufacturers product data sheet. All guidance provided by the manufacturers product data sheet regarding the mixing of multi-component product, thinning requirement
29、s, induction times, and special application procedures shall be followed. The coating shall be applied within the manufacturers pot life limitations.6.2 STORAGE LIFE AND PACKAGE STABILITY: Each component of these coatings shall be uniform, stable in storage, and free from grit and coarse particles.
30、Package stability shall be tested in accordance with ASTM D1849. Storage conditions shall be 30 days at 52 1 C (125 2 F). A change in viscosity greater than 10 Krebs units or noncompliance with application requirements shall be cause for rejection.6.3 APPLICATION PROPERTIES: All guidance provided by
31、 the manufacturer regarding special application procedures shall be followed. The coating shall be evaluated for brush, roll, and spray application properties following manufacturers written recommendations for each application method. Coatings shall meet application requirements of FED-STD-141 Meth
32、ods 4321.3 and 4331.2 except that steel test panels prepared in accordance with Section 5.1 shall be used. The coating shall have no streaking, running, or sagging or other defects during application or while drying (see Note 11.3). 7. LABORATORY PHYSICAL TESTS OF APPLIED FILMS7.1 The tests shall be
33、 performed on panels prepared in accordance with Sections 5.1 through 5.4. 7.2 ADHESION: Adhesion shall be tested following procedure in ASTM D4541 Method C, D, or E. Report the type of adhesion tester employed and the type of adhesive used for testing. Perform a minimum of three pulls on one test p
34、anel. The minimum adhesion value of the primer to the substrate for each pull shall be 5.6 MPa (800 psi).7.3 CURE: This test evaluates the capability of the coating to cure at a lower temperature than the standard conditions required in Section 5.4. Triplicate panels prepared and cured for 240 hours
35、 in accordance with sections 5.1 through 5.3 at a temperature of 10 C (50 F) and a relative humidity between 40 and 60 percent shall be tested in accordance with ASTM D5402 with MEK solvent. The coating shall exhibit no marring or burnishing and no transfer of coating to the cloth. 7.4 FLEXIBILITY:
36、Coating flexibility shall be evaluated on triplicate panels using the procedure described in ASTM D522, Method B using a 1-inch (2.54 cm) mandrel. Two of three panels tested shall exhibit no cracking when bent at 180 degrees.7.5 DIRECT IMPACT RESISTANCE: The direct impact resistance shall be evaluat
37、ed on triplicate panels in accordance with ASTM D2794. There shall be no cracks in the coating on any of the three panels when tested at 30 inch-pounds (0.345 kg-m)7.6 CHEMICAL RESISTANCE: Triplicate panels shall be tested in accordance with Section 7.2 “Covered Spot Test” of ASTM D1308. The coating
38、 shall be exposed to the reagents listed in Table 1 for a period of 24 hours at 24 C (75 F) and examined immediately after exposure to the specified reagents. The coating shall be examined for blistering, cracking, checking, softening and delamination of film. The coating shall meet the performance
39、requirements listed in Table 1 for each reagent. A control set of triplicate panels shall be evaluated according to ASTM D3363 to establish a benchmark hardness value for comparison with the panels subjected to the covered spot test.8. ACCELERATED LABORATORY REQUIREMENTS8.1 HUMIDITY: Triplicate pane
40、ls prepared and cured in accordance with Section 5.1 through 5.4 and 5.6 shall be exposed to controlled condensation at 38 C (100 F) for 1008 hours in accordance with ASTM D1735. 8.1.1 Rust Evaluation: When evaluated in accordance with SSPC-VIS 2, the rust rating of each panel shall be 10 (no rustin
41、g). 8.1.2 Blister Evaluation: When evaluated in accordance with ASTM D714, the blister rating of each panel shall be 10 (no blistering).8.2 CYCLIC WEATHERING TEST: Triplicate panels prepare and cured in accordance with Sections 5.1 through 5.6 shall be exposed in accordance with ASTM D5894 for 8 cyc
42、les (2688 hours). Immediately after exposure, the tested panels shall be evaluated for rusting, blistering, and scribe undercutting 8.2.1 Rust Evaluation: When evaluated in accordance with SSPC-VIS 2, the rust rating of the unscribed portion of each panel shall be 10 (no rusting). 8.2.2 Blister Eval
43、uation: When evaluated in accordance with ASTM D714, the blister rating of each panel shall be 10 (no blistering).SSPC-Paint 42October 19, 201548.2.3 Scribe Undercutting Evaluation: The average undercutting distance on each panel shall be no more than 5.0 mm when evaluated in accordance with SSPC-PA
44、 16.9. LABELING9.1 Labeling shall conform to GHS. 9.2 Technical data shall be provided for at least all data elements categorized as “essential” in SSPC-Guide 13.10. DISCLAIMER10.1 While every precaution is taken to ensure that all information furnished in SSPC standards and specifications is as acc
45、urate, complete, and useful as possible, SSPC cannot assume responsibility nor incur any obligation resulting from the use of any materials, coatings, or methods specified herein, or of the standard itself.10.2 This standard does not attempt to address problems concerning safety associated with its
46、use. The user of this standard, as well as the user of all products or practices described herein, is responsible for instituting appropriate health and safety practices and for ensuring compliance with all governmental regulations.11. NOTESNotes are not requirements of this standard.11.1 VOC CONTEN
47、T: Local regulations regarding VOC content, VOC emissions, and container labeling may vary depending on project location. For example, Federal limits for VOCs in industrial maintenance coatings were published in 1998 and may be found athttp:/www3.epa.gov/airtoxics/183e/aim/aimpg.htmlThese limits app
48、ly to the coating at the time of application after thinning according to the manufacturers recommenda-tions. However, many state and local governments and/or air quality management areas have more stringent VOC regula-tions than those in the federal rule. In the U.S., information on the VOC content
49、of each container before mixing or thinning is found on the container label and in the manufacturers safety data sheet. The coating manufacturers product data sheet usually provides information on the total VOC content of a coating after mixing and any recommended thinning.11.2 QUALITY ASSURANCE TESTS: If the user chooses, tests may be used to determine the acceptability of a lot or batch of a qualified coating. The quality assurance tests are used to determine whether the supplied products are of the same type and quality as those originally tested and certified fo
