ASTM_D_5393_-_97.pdf

Designation:D 5393 97Standard Test Method forDetermination of Fogging Characteristics of Vehicle InteriorTrim Materials1This standard is issued under the fixed designation D 5393;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,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.Scope*1.1 This test method covers a procedure for determining thetendency of interior trim materials used in automobiles andother vehicles to produce a light-scattering film,which may becalled fog film or fog,on a glass surface in a controlledenvironment.1.2 Acceptance criteria for materials tested using this testmethod will be established by the specifications of thosecompanies that implement this test method.1.3 This procedure is applicable to the measurement of fogcondensate on glass surfaces within the limits of the testconditions.This test will not measure or cannot measureaccurately those cases in which:1.3.1 The condensates surface tension is low,resulting inearly coalescing into a thin transparent film.1.3.2 The condensate is present in such large quantity thatthe droplets coalesce and form a heavy oily/clear film on theglass surface.This heavy film would result in false glossmeterreadings during the final evaluation.1.3.3 The condensate is reactive within the vehicle environ-ment or interactive with other volatiles in the vehicle notpresent in the test chamber.1.4 All testing on compounds indicated herein is based onmaterials conditioned in a controlled atmosphere of 23 6 2Cand 50 6 5%relative humidity for 24 h prior to any testingand tested under the same controlled conditions.NOTE1This standard and ISO 6452 are essentially equivalent.1.5 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.1.6 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.7 This standard does not purport to address all of thesafety concerns,if any,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.See Note 4 for aspecific hazard statement.2.Referenced Documents2.1 ASTM Standards:D 523 Test Method for Specular Gloss2D 883 Terminology Relating to Plastics3D 1600 Terminology for Abbreviated Terms Relating toPlastics3E 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method42.2ISO Standards:ISO6452 RubberandPlasticCoatedFabricsDetermination of Windscreen Fogging Characteristics ofOrganic Trim Materials in Motor Vehicles5ISO 2813 Paints and VarnishesMeasurement of SpecularGloss of Non-Metallic Paint Films at 20,60,and 8553.Terminology3.1 GeneralDefinitions are in accordance with Terminol-ogy D 883 and abbreviations with Terminology D 1600,unlessotherwise indicated.3.2 Definitions of Terms Specific to This Standard:3.2.1 foggingthe deposit of an undesirable light-scatteringfilm on the interior glass surface of vehicles.3.2.2 fogging numberthe quotient in percent from a 60glossmeter value of a glass plate with fogging condensate andthe 60 glossmeter value of a glass plate without the conden-sate.4.Summary of Test Method4.1 A glass plate is cleaned and its specular reflectance ismeasured using a glossmeter.A test piece of the material isplaced on the bottom of a beaker.The beaker is placed in atemperature-controlled heating unit.The cleaned glass plate isplaced upon the beaker with a silicone rubber seal so that anyvolatile materials that migrate from the test piece will conden-sate upon its undersurface.4.2 A cooling system is placed upon the glass plate to1This test method is under the jurisdiction ofASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materi-als.Current edition approved July 10,1997.Published April 1998.Originallypublished as D 5393 93.Last previous edition D 5393 93.2Annual Book of ASTM Standards,Vol 06.01.3Annual Book of ASTM Standards,Vol 08.01.4Annual Book of ASTM Standards,Vol 14.02.5Available from American National Standards Institute,11 West 42nd Street,13th Floor,New York,NY 10036.1*A Summary of Changes section appears at the end of this standard.AMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTMNOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.control the condensate temperature.After a specified time theglass plate is removed,and its specular reflectance is againmeasure