1、Designation: E 1797 04Standard Specification forReinforced Liquid Coating Encapsulation Products forLeaded Paint in Buildings1This standard is issued under the fixed designation E 1797; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio
2、n, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 fo
3、r rein-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 Chemica
4、l Resistance,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 specif
5、ic use conditions. Specific useconditions may require performance values other than thosestated in this specification. See Guide E 1796 for guidance.1.3 This specification complements Specification E 1795for non-reinforced liquid coating encapsulation products.1.4 This specification does not cover t
6、he use 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 m
7、aterials 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 i
8、n this 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.
9、It is 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 ApplicationsD 823 P
10、ractices for Producing Films of Uniform Thicknessof Paint, Varnish, and Related Products on Test PanelsD 1005 Test Methods for Measurement of Dry-Film Thick-ness of Organic Coatings Using MicrometersD 1186 Test Methods for Nondestructive Measurement ofDry Film Thickness of Nonmagnetic Coatings Appli
11、ed toa Ferrous BaseD 1212 Test Methods for Measurement of Wet Film Thick-ness of Organic CoatingsD 1308 Test Method for Effect of Household Chemicals onClear and Pigmented Organic FinishesD 1475 Test Method for Density of Liquid Coatings, Inks,and Related ProductsD 1653 Test Methods for Water Vapor
12、Transmission ofOrganic Coating FilmsD 2486 Test Method for Scrub Resistance of Wall PaintsD 2794 Test Method for Resistance of Organic Coatings tothe Effects of Rapid Deformation (Impact)D 3273 Test Method for Resistance to Growth of Mold onthe Surface of Interior Coatings in an EnvironmentalChamber
13、D 3274 Test Method for Evaluating Degree of SurfaceDisfigurement of Paint Films by Microbial (Fungal orAlgal) Growth or Soil and Dirt AccumulationD 3359 Test Methods for MeasuringAdhesion by Tape Test1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and i
14、s the direct responsibility of Subcommittee E06.23on Lead Hazards Associated With Buildings.Current edition approved April 1, 2004. Published April 2004. Originallyapproved in 1995. Last previous edition approved in 2003 as E 1797 03.2For referenced ASTM standards, visit the ASTM website, www.astm.o
15、rg, 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, West Conshohocken, PA 19428-2959, United States.D 3924 Speci
16、fication for Standard Environment for Condi-tioning and Testing Paint, Varnish, Lacquers, and RelatedMaterialsD 3925 Practice for Sampling Liquid Paints and RelatedPigmented CoatingsD 3960 Practice for Determining Volatile Organic Com-pound (VOC) Content of Paints and Related CoatingsD 3891 Practice
17、 for Preparation of Glass Panels for TestingPaint, Varnish, Lacquer, and Related ProductsD 4060 Test Method for Abrasion Resistance of OrganicCoatings by the Taber AbraserD 4214 Test Methods for Evaluating Degree of Chalking ofExterior Paint FilmsD 4414 Practice for Measurement ofWet FilmThickness b
18、yNotch GagesD 4541 Test Method for Pull-Off Strength of CoatingsUsing Portable Adhesion-TestersD 4708 Practice for Preparation of Free Films of OrganicCoatingsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE 1605 Terminology Relating to Abatement of Hazardsfrom Lead-Based Pa
19、int in Buildings and Related StructuresE 1795 Specification for Non-Reinforced Liquid CoatingEncapsulation Products for Leaded Paint in BuildingsE 1796 Guide for Selection and Use of Liquid CoatingEncapsulation Products for Leaded Paint in BuildingsE 2239 Standard Practice for Record Keeping and Rec
20、ordPreservation for Lead Hazard ActivitiesG 154 Practice for Operating Fluorescent Light Apparatusfor UV Exposure of Nonmetallic Materials2.2 Federal Test Methods Standard 141D:32011 Preparation of Steel Panels2012 Preparation of Tin Panels3011 Condition in Container3. Terminology3.1 DefinitionsFor
21、definitions of terms used in this speci-fication, refer to Terminologies D 16 and E 1605.4. 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 exte
22、rior aging (for example, test methods describedin 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 1
23、0.10.2 not con-ducted).4.3 Type III: Either Exterior 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
24、rein-forced liquid coating encapsulation product 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 l
25、ead accessibility. However, requirements forthese 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,
26、may be subject toregulations or ordinances promulgated 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 testme
27、thods are available.6. Sampling6.1 A 3.8-L (1-gal) 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 sto
28、rage time and tempera-ture fluctuations may cause 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 andobjectionabl
29、e if the coating cannot be readily made suitable 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 D 3925. Determine the
30、density in accordance withTest Method D 1475, and repeat until two successive readingsagree within 90 g (0.2 lb). Samples for testing may then betaken.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 s
31、hall be conducted for eachperformance property is 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
32、conducted shall be used indetermining whether the 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 a
33、brasion and adhesiontesting, where specialty primers 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, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, P
34、A 19111-5094, Attn: NPODS.E17970429.2 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
35、. 141C. Supplement thetest 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 D 823. Determine the dry-fi
36、lm thickness inaccordance with Test Method D 1005 or D 1186 except whenthe manufacturers written instructions reference only wet-filmthickness. In this case, measure wet-film thickness in accor-dance with Test Methods D 1212 or Practice D 4414. If a rangeof thickness is specified by the manufacturer
37、 for field applica-tion, the minimum value of this range shall be used for productTABLE 1 Performance Requirements For Reinforced Liquid Coating Encapsulation ProductsPerformancePropertyMinimum PerformanceRequirementTested inAccordancewith ParagraphMinimum Numberof TestsImpact resistance 9 J (80 in.
38、 lbf) without cracking to thesubstrate 10.2 Two panelsAdhesion 700 kPa (100 lbf/in.2)10.3 Three panelsDry abrasion resistance For all reinforcements: no abrasionthrough the reinforcement after 1000cyclesAdditionally, for mesh-typereinforcements: coating presentwithin the mesh10.4 Two panelsWater vap
39、or transmission No minimum; report test resultA10.5 Three cupsWater and chemicalresistancespot 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 reagentWat
40、er and chemicalresistanceimmersion testAfter 1 h recovery period, noevidence of blistering, cracking, ordelaminationAfter 24 h recoveryperiod, indistinguishable hardness of theexposed and unexposed surfaces10.6/10.6.2One panel examined in eachof three locationsSurface burning characteristics Flame s
41、pread index (FSI) 6 h recovery period after completing exposure:adhesion: 700 kPa (100 lbf/in.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
42、to thesubstrate after 1200 cycles 10.11 Two panelsMildew resistance Mildew resistance rating: 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 architectu
43、ral and end use conditions ( See 1.2).BVOC requirements may be specified in ordinances promulgated by authorities having jurisdiction.E1797043testing in accordance with this specification. The dry-filmthickness shall remain constant for all tests.9.2.3.1 Mechanical fasteners shall not be used in pre
44、paringthe 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 PracticeD 3891.9.2.6 Curing shall be performed under standard laboratoryconditions in accordance with Specification D 3924. The cureti
45、me 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 standardlaboratory conditi
46、ons in accordance with Specification D 3924.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,whether single
47、 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 D 2794 using 0.80-mm(0.032-in.) zinc phospha
48、te treated, cold-rolled steel panels asthe substrate and 16-mm (0.625-in.) punch diameter. Theimpact shall be applied directly to the encapsulant coating.After impact, examine the encapsulant coating visually for thepresence of cracks using 53 to 73 magnification.10.3 AdhesionDetermine the degree of
49、 adhesion in accor-dance with Test Method D 4541 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, whether betweenthe
