1、Designation: C 1483 04Standard Specification forExterior Solar Radiation Control Coatings on Buildings1This standard is issued under the fixed designation C 1483; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. 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 The purpose of this specification is to provide generalrequirements for products used to reduce thermal loads onbuildings by
3、reflecting solar radiation from roofs and walls.Radiation control coating (RCC) is a liquid applied coatinghaving a solar reflectance of 0.8 and an ambient temperatureinfrared emittance of at least 0.8.1.2 This specification covers the physical and mechanicalproperties of liquid-applied radiation co
4、ntrol coatings (RCCs)designed for exterior application on buildings or other struc-tures, where ambient air temperatures range form -34 to 54C(-30 to 130F). The specification also includes the testingprocedures by which the acceptability of the material may bedetermined.1.3 The products that comply
5、with this specification may beused for other applications and have other properties notcovered by this specification. In such cases, it is advisable tocheck other specifications that address the applications ofinterest.1.4 This standard does not purport to address all of thesafety concerns, if any,
6、associated with its use. 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:2C 168 Terminology Relating to Thermal Insulation Mate
7、ri-alsC 419 Practice for Making and Curing Test Specimens ofMastic Thermal Insulation CoatingsC 461 Test Methods for Mastics and Coatings Used WithThermal InsulationC 1371 Test Method for Determination of Emittance ofMaterials Near Room Temperatures Using Portable Emi-sometersD 471 Test Method for R
8、ubber PropertyEffect of LiquidsD 903 Test Method for Peel or Stripping Strength of Adhe-sive BondsD 2370 Test Method for Tensile Properties of OrganicCoatingsD 2697 Test Method for Volume of Nonvolatile Matter inClear or Pigmented CoatingsD 3274 Method for Evaluating Degree of Surface Disfig-urement
9、 of Paint Films by Microbial (Fungal or Algal)Growth or Soil and Dirt AccumulationE 84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE 96 Test Methods for Water Vapor Transmission of Mate-rialsE 349 Terminology Relating to Space SimulationE 903 Test Method for Solar Absorptance
10、, Reflectance andTransmission of Materials Using Integrating SpheresE 1175 Test Method for Determining Solar and PhotopicReflectance, Transmittance and Absorptance of MaterialsUsing Large Diameter Integrating SpheresG 155 Practice for Operating Xenon-Arc light Apparatusfor Exposure of Nonmetallic Ma
11、terials3. Terminology3.1 DefinitionsTerminology C 168 and E 349 shall applyto this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 radiation control coating (RCC), na radiation con-trol coating is a material that is designed to have a high solarreflectance (above 0.8) and a hi
12、gh infrared emittance (above0.8) for long wavelength radiation.3.2.2 solar reflectance, nsolar reflectance is the fractionof incident solar radiation that is reflected.4. Significance and Use4.1 It is recognized that the solar reflectance of RCCs willbe reduced by soiling, which is caused by the acc
13、umulation ofdirt, dust and other contaminants on the surface. The soiling, onthe roof, will differ from location to location and fromenvironment to environment. It is possible that soiling rates areaffected by the slope of the surface, the roughness of thesurface, the characteristics of the dust in
14、the air, the dust1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.21 onReflective Insulation.Current edition approved Feb. 1, 2004. Published March 2004. Originallyapproved in 2000 as C 148300.2For reference
15、d 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, West Con
16、shohocken, PA 19428-2959, United States.content of the air and the degree of growth of mildew and otherorganisms on the surface. Low slopes, rough surfaces, dusty airand persistent moisture and conditions of high humidity are allconducive to soiling. At this time there are insufficient obser-vations
17、 available to predict the amount of soiling for a givenlocale or the effect of the soiling on solar reflectance. Nor haveany test procedures been developed to determine the ease withwhich the RCCs can be cleaned and the degree to which thesolar reflectance can be restored. It is suggested that users
18、examine the potential for soiling at the application site anddetermine if the cleaning methods suggested by the manufac-turer are likely to be adequate to maintain solar reflectance atan acceptable level, for the type of soiling expected5. Materials and Manufacture5.1 CompositionThe manufactured pro
19、duct shall be inliquid form, suitable for application to exterior surfaces bybrushing, rolling, or spraying. The product shall be a elasto-meric or resinous material, to which various pigments, dilut-ants, and other additives have been added to give the desiredproperties.6. Physical and Mechanical P
20、roperties6.1 Total SolidsThe total solids of the liquid product shallnot be less than 25 %, by weight, and shall be determined inaccordance with 8.1.6.2 Solids VolumeThe total solids in the liquid productshall not be less than 25 %, by volume, as determined inaccordance with 8.2.6.3 Solar Reflectanc
21、eThe solar reflectance of the curedcoating shall be determined in accordance with 8.3. The solarreflectance of the cured coating shall be no less than 0.8.6.4 Infrared EmittanceInfrared emittance, at ambienttemperature, shall be determined in accordance with 8.4. Theambient temperature infrared emit
22、tance of the cured coatingshall be no less than 0.8.6.5 ElongationThe elongation of the cured coating shallbe determined in accordance with 8.5.6.5.1 The elongation of the cured coating shall be greaterthan 200 % and 100 % at testing temperatures of 25 and -18C(77 and 0F) respectively.6.5.2 The elon
23、gation of the coating after UV exposure shallnot be less than 80 % of the values obtained at 25 and -18C(77 and 0F) on the cured coating.6.6 AdhesionThe adhesion of the coating shall be deter-mined in accordance with 8.6. The adhesion of the curedcoating shall be reported for each of the substrates
24、tested.6.7 Water Vapor PermeanceThe water vapor permeanceof the cured coating shall be determined in accordance with8.7. The water vapor permeance values shall be reported for thethickness tested but in no case shall be greater than 20 perms.6.8 Flame RetardancyThe flame retardancy of the curedcoati
25、ng shall be determined in accordance with 8.8 and shall betested on a substrate typical of final installation. Flame spreadand smoke development shall be no greater than that requiredby local code requirement.6.9 Fungi ResistanceThe fungi resistance of the curedcoating shall be determined and found
26、acceptable in accor-dance with 8.9.6.10 Water AbsorptionWater absorption of the cured coat-ing shall be determined in accordance with 8.10.6.11 Cured Sample ThicknessThe cured sample thicknessshall be determined in accordance with 8.11.6.12 Outdoor DurabilityThe outdoor durability shall bedetermined
27、 in accordance with 8.12.7. Sample Preparation7.1 SamplingSamples for testing shall be taken from theoriginal containers immediately after stirring the material to auniform condition.7.2 Cured Sample PreparationFor tests to be performedon specimen of cured (dry) product, the thickness of thespecimen
28、 will be no less than the manufacturers recommendedcured coating thickness. The cured coating specimen shall beprepared on a substrate suitable for the intended test. Exampleof these substrates are metal, stucco or black asphalt.7.3 Cured values shall be determined in accordance with8.11.8. Test Met
29、hods8.1 Total Solids (by Weight)Determine the total solids ofthe wet product in accordance with Test Methods C 461,Section 8.8.2 Solids VolumeDetermine the solids volume of the wetproduct in accordance with Test Method D 2697.8.3 Solar ReflectanceThe solar reflectance shall be deter-mined on samples
30、 in the cured condition placed on low solarreflectance substrates in accordance with either Test MethodE 903 or E 1175. This may be done with a solar reflectometer.8.4 Total Hemispherical Emittance Total hemisphericalemittance, at ambient temperature, shall be determined oncured samples placed on lo
31、w emittance substrates in accor-dance with Test Method C 1371.8.5 ElongationElongation tests shall be performed oncured samples before and after 3000-h exposure to ultraviolet(UV) radiation in accordance with Test Method D 2370 andPractice G 155 (without water).8.6 AdhesionAdhesion tests shall be pe
32、rformed on curedsamples in accordance with Test Method D 903.8.7 Water Vapor PermeanceDetermine the water vaporpermeance on cured samples in accordance with Test MethodsE 96, desiccant method.8.8 FlammabilityDetermine the flammability of curedsamples in accordance with Test Method E 84.8.9 Fungi Res
33、istanceDetermine the fungi resistance ofthe cured material in accordance with Test Method D 3274.8.10 Water AbsorptionDetermine the water absorption ofthe cured product in accordance with Test Method D 471.8.11 Cured Samples ThicknessDetermine cured samplethickness in accordance with Practice C 419.
34、8.12 Outdoor DurabilityDetermine the outdoor durabilityin accordance with Practice G 26.9. Inspection and Rejection9.1 Inspection and rejection of material shall be agreed uponbetween the purchaser and the seller as part of the purchasecontract.C148304210. Packaging and Package Marking10.1 Packaging
35、Unless otherwise agreed or specified, ma-terials shall be packaged in the manufacturers standard com-mercial containers.10.2 MarkingThe marking shall be clear and legible.Unless otherwise specified, each container shall be markedwith the date of manufacture, material name, ASTM designa-tion, manufac
36、turers name or trademark, and coverage ofmaterial in container.11. Keywords11.1 emittance; radiation control coating; solar reflectance;solids volume; total solidsASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this s
37、tandard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be re
38、viewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of therespons
39、ible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C1483043
