1、Designation: E1797 12Standard Specification forReinforced Liquid Coating Encapsulation Products forLeaded Paint in Buildings1This standard is issued under the fixed designation E1797; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers minimum material perfor-mance requirements and laboratory test procedures for r
3、ein-forced liquid coating encapsulation products (single- ormultiple-coat systems) for leaded paint in buildings. Perfor-mance properties addressed in this specification are:1.1.1 Impact Resistance,1.1.2 Adhesion,1.1.3 Dry Abrasion Resistance,1.1.4 Water Vapor Transmission,1.1.5 Water and Chemical R
4、esistance,1.1.6 Surface Burning Characteristics,1.1.7 Volatile Organic Compound (VOC) Content,1.1.8 Weathering,1.1.9 Aging,1.1.10 Scrub Resistance,1.1.11 Mildew Resistance,1.1.12 Paintability/Repairability,1.2 This specification does not address the selection of anencapsulation product for specific
5、use conditions. Specific useconditions may require performance values other than thosestated in this specification. See Guide E1796 for guidance.1.3 This specification complements Specification E1795 fornon-reinforced liquid coating encapsulation products.1.4 This specification does not cover the us
6、e of encapsula-tion products on industrial steel structures nor residentialexterior coated metal surfaces because no corrosion controlrequirements are included.1.5 This specification applies to any liquid-applied productincorporating reinforcement materials as part of the system.Reinforcement materi
7、als are continuous fabric or mesh and areapplied in the field. These materials are typically appliedbetween a base and top coat. These products are used toencapsulate a leaded paint surface with the intent of reducinghuman exposure to lead in paint.1.6 The results of the test methods included in thi
8、s specifi-cation will not necessarily predict field performance.1.7 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.8 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is
9、 theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D16 Terminology for Paint, Related Coatings, Materials,and ApplicationsD823 Practic
10、es for Producing Films of Uniform Thicknessof Paint, Varnish, and Related Products on Test PanelsD1005 Test Method for Measurement of Dry-Film Thick-ness of Organic Coatings Using MicrometersD1212 Test Methods for Measurement of Wet Film Thick-ness of Organic CoatingsD1308 Test Method for Effect of
11、Household Chemicals onClear and Pigmented Organic FinishesD1475 Test Method For Density of Liquid Coatings, Inks,and Related ProductsD1653 Test Methods for Water Vapor Transmission ofOrganic Coating FilmsD2486 Test Methods for Scrub Resistance of Wall PaintsD2794 Test Method for Resistance of Organi
12、c Coatings tothe Effects of Rapid Deformation (Impact)D3273 Test Method for Resistance to Growth of Mold onthe Surface of Interior Coatings in an EnvironmentalChamberD3274 Test Method for Evaluating Degree of SurfaceDisfigurement of Paint Films by Fungal or Algal Growth,or Soil and Dirt Accumulation
13、D3359 Test Methods for Measuring Adhesion by Tape TestD3924 Specification for Environment for Conditioning andTesting Paint, Varnish, Lacquer, and Related MaterialsD3925 Practice for Sampling Liquid Paints and RelatedPigmented Coatings1This specification is under the jurisdiction of ASTM Committee E
14、06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.23on Lead Hazards Associated with Buildings.Current edition approved July 15, 2012. Published August 2012. Originallyapproved in 1995. Last previous edition approved in 2004 as E1797 04. DOI:10.1520/E1797-12.2For refe
15、renced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, Wes
16、t Conshohocken, PA 19428-2959, United States.D3960 Practice for Determining Volatile Organic Com-pound (VOC) Content of Paints and Related CoatingsD3891 Practice for Preparation of Glass Panels for TestingPaint, Varnish, Lacquer, and Related ProductsD4060 Test Method for Abrasion Resistance of Organ
17、icCoatings by the Taber AbraserD4214 Test Methods for Evaluating the Degree of Chalkingof Exterior Paint FilmsD4414 Practice for Measurement of Wet Film Thickness byNotch GagesD4541 Test Method for Pull-Off Strength of Coatings UsingPortable Adhesion TestersD7091 Practice for Nondestructive Measurem
18、ent of DryFilm Thickness of Nonmagnetic Coatings Applied toFerrous Metals and Nonmagnetic, Nonconductive Coat-ings Applied to Non-Ferrous MetalsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE1605 Terminology Relating to Lead in BuildingsE1795 Specification for Non-Reinforce
19、d Liquid CoatingEncapsulation Products for Leaded Paint in BuildingsE1796 Guide for Selection and Use of Liquid CoatingEncapsulation Products for Leaded Paint in BuildingsE2239 Practice for Record Keeping and Record Preserva-tion for Lead Hazard ActivitiesG154 Practice for Operating Fluorescent Ligh
20、t Apparatusfor UV Exposure of Nonmetallic Materials2.2 Federal Test Methods Standard 141C:32011 Preparation of Steel Panels2012 Preparation of Tin Panels2.3 Federal Test Methods Standard 141D:33011 Condition in Container3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-ficatio
21、n, refer to Terminologies D16 and E1605.4. Classification4.1 Type I: Interior Use OnlyType I defines encapsulationproducts intended for interior use. These products shall meetthe requirements of this specification except those for weath-ering and exterior aging (for example, test methods describedin
22、 10.9 and 10.10.1 not conducted).4.2 Type II: Exterior Use OnlyType II defines encapsula-tion products intended for exterior use. These products shallmeet the requirements of this specification except that forinterior aging (for example, test method 10.10.2 not con-ducted).4.3 Type III: Either Exter
23、ior or Interior UseType IIIdefines encapsulation products intended for either interior orexterior use. These products shall meet all the requirements ofthis specification.5. Performance Requirements5.1 Performance requirements that shall be met for a rein-forced liquid coating encapsulation product
24、are given in Table1.NOTE 1In addition to those given in Table 1, performance require-ments for three other properties are of concern for liquid coatingencapsulation products. These are combustion toxicity, emissions duringapplication and curing, and lead accessibility. However, requirements forthese
25、 properties cannot be included in this specification at this timebecause there are no adequate ASTM or Federal test methods fordetermining them. Requirements for two of these properties, combustiontoxicity and emissions during application and curing, may be subject toregulations or ordinances promul
26、gated by authorities having jurisdiction.The user of this specification is advised to determine whether suchregulations or ordinances exist. The addition of requirements for theseproperties to this specification will be undertaken when suitable testmethods are available.6. Sampling6.1 A 3.8-L (1-gal
27、) sample of the encapsulant coating isusually sufficient for conducting the specified tests.6.2 Prior to sampling, establish the condition of the con-tainer since damage to it may cause evaporation, skinning, orother undesirable effects. Excessive storage time and tempera-ture fluctuations may cause
28、 settling or changes in viscosity.Materials beyond the manufacturers stated shelf life shall notbe sampled. Reinforcement materials shall be evaluated toensure they are undamaged.6.3 Thickening, settling, and separation are undesirable andobjectionable if the coating cannot be readily made suitable
29、forapplication with a reasonable amount of stirring. Determine theconditions in the container in accordance with Method 3011 ofFederal Test Method Standard No. 141C.6.4 Sample the encapsulation product in accordance withPractice D3925. Determine the density in accordance with TestMethod D1475, and r
30、epeat until two successive readings agreewithin 90 g (0.2 lb). Samples for testing may then be taken.6.5 Report the size of the container from which the samplewas taken and product identification codes.7. Number of Tests7.1 The number of tests that shall be conducted for eachperformance property is
31、given in Table 1.8. Retesting8.1 In cases where encapsulation products fail to pass one ormore requirements of this specification, retesting shall bepermitted. Both the original data and the retesting data for eachrequirement for which retesting was conducted shall be used indetermining whether the
32、requirement is met.9. Test Specimens9.1 An encapsulation product shall be comprised of allprincipal components in the system, including the base andtopcoats, the reinforcement material, and primer, if specified,for field application. Except for dry abrasion and adhesiontesting, where specialty prime
33、rs may be used for flash rustresistance, primers shall not be used solely for product perfor-mance testing in accordance with this specification.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.E
34、1797 1229.2 Preparation of Test Panels:9.2.1 The test specimen (substrate) shall be the encapsulant-coated test panel.9.2.2 Prior to product application, the tin-plated steel panelsshall be solvent cleaned in accordance with Method 2012 ofthe Federal Test Method Standard No. 141C. Supplement thetest
35、 panel cleaning procedure with an additional cleaning sothat water wets the entire surface of the panel. Dry and wipeclean.9.2.3 Product application shall be performed using thedraw-down procedure, where applicable, in accordance withTest Methods D823. Determine the dry-film thickness inaccordance w
36、ith Test Method D1005 for free films or PracticeD7091 for films on steel panels except when the manufactur-ers written instructions reference only wet-film thickness. Inthis case, measure wet-film thickness in accordance with TestMethods D1212 or Practice D4414. If a range of thickness isTABLE 1 Per
37、formance Requirements For Reinforced Liquid Coating Encapsulation ProductsPerformancePropertyMinimum PerformanceRequirementTested inAccordancewith ParagraphMinimum Numberof TestsImpact resistance 9 J (80 in. lbf) without cracking to thesubstrate 10.2 Two panelsAdhesion 700 kPa (100 lbf/in.2)10.3 Thr
38、ee panelsDry abrasion resistance For all reinforcements: no abrasionthrough the reinforcement after 1000cyclesAdditionally, for mesh-typereinforcements: coating presentwithin the mesh10.4 Two panelsWater vapor transmission No minimum; report test resultA10.5 Three cupsWater and chemicalresistancespo
39、t testAfter 1 h recovery period, noevidence of blistering, cracking, ordelaminationAfter 24 h recovery,indistinguishable hardness of theexposed and unexposed surfaces10.6/10.6.1 Two tests for each reagentWater and chemicalresistanceimmersion testAfter 1 h recovery period, noevidence of blistering, c
40、racking, ordelaminationAfter 24 h recoveryperiod, indistinguishable hardness of theexposed and unexposed surfaces10.6/10.6.2One panel examined in eachof three locationsSurface burning characteristics Flame spread index (FSI) 6 h recovery period after completing exposure:adhesion: 700 kPa (100 lbf/in
41、.2) 10.10.1 Three panelsAginginterior end-useproductsAfter a 6 h recovery period after completing exposure:adhesion: 700 kPa (100 lbf/in.2) 10.10.2 Three panelsScrub resistance No erosion of the encapsulant to thesubstrate after 1200 cycles 10.11 Two panelsMildew resistance Mildew resistance rating:
42、 810.12 Three panelsPaintability Adhesion rating: 5A10.13.1Two panels each tested atthree locationsRepairability Adhesion: 700 kPa (100 lbf/in.2)10.13.2 Three panelsAMinimum performance depends on architectural and end use conditions (see 1.2).BVOC requirements may be specified in ordinances promulg
43、ated by authorities having jurisdiction.E1797 123specified by the manufacturer for field application, the mini-mum value of this range shall be used for product testing inaccordance with this specification. The dry-film thickness shallremain constant for all tests.9.2.3.1 Mechanical fasteners shall
44、not be used in preparingthe test panels.9.2.4 Prepare steel panels in accordance with Method 2011of Federal Test Method Standard No. 141C.9.2.5 Prepare glass panels in accordance with PracticeD3891.9.2.6 Curing shall be performed under standard laboratoryconditions in accordance with Specification D
45、3924. The curetime shall be seven days unless otherwise agreed upon betweenthe purchaser and the seller. The cure time shall remainconstant for all tests.9.3 Laboratory Conditions:9.3.1 Where applicable, all test methods and practicesincluded in this specification shall be performed under standardla
46、boratory conditions in accordance with Specification D3924.ASTM standard conditions for laboratory testing are 23 6 2C(73.5 6 3.5F) and 50 6 5 % relative humidity.10. Test Methods10.1 Testing conducted in accordance with this specificationshall be performed on the entire encapsulation product system
47、,whether single or multiple coat, as applied in the field, exceptfor scrub resistance, volatile organic compound (VOC) con-tent, and permeability, which are performed on the top coatonly.10.2 Impact ResistanceDetermine the impact resistancein accordance with Test Method D2794 using 0.80-mm (0.032-in
48、.) zinc phosphate treated, cold-rolled steel panels as thesubstrate and 16-mm (0.625-in.) punch diameter. The impactshall be applied directly to the encapsulant coating. Afterimpact, examine the encapsulant coating visually for thepresence of cracks using 53 to 73 magnification.10.3 AdhesionDetermin
49、e the degree of adhesion in accor-dance with Test Method D4541 using 0.25-mm (0.10-in.) tinplated steel panels as the substrate. The size of the test area onthe panel shall be a minimum of 75 by 150 mm (3 by 6 in.). Donot score around adhesion dolly. Prior to conducting thepull-off adhesion test procedure, adhere the tin-plated steelpanel to a 6.4-mm (0.25-in.) thick steel panel of a size equal toor greater than the tin-plated panel. An elcometer appropriatefor measuring adhesion in the range of 0 to 3.5 MPa (0 to 500psi) shall be used. Record the mode of failure, w
