ASTM_D_3836_-_13.pdf

Designation:D383613Standard Practice for Evaluation ofAutomotive Polish1This standard is issued under the fixed designation D3836;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers testing properties and apparatusused in evaluating the performance of automotive polishes.This practice is applicable to products that are commonlyreferred to as car/auto wax,cleaner wax,polish,etc.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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.2.Referenced Documents2.1 ASTM Standard:D1133 Test Method for Kauri-Butanol Value of Hydrocar-bon Solvents3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 automotive polishliquid or paste formulation forcleaning and improving the appearance of automobile finishes.4.Significance and Use4.1 This practice is intended to define the properties to betested,the apparatus to use,and the comparisons of productperformance.It is recognized that considerable discretionexists among formulators and marketers of automotive polishon what properties or performance characteristics are mostimportant for their products.This practice is flexible enough tohonor this fact within the confines of the automotive polishdefinition.4.2 The methods of this practice are subjective and empiri-cal in order to conform to the basic practices of the industryand to allow flexibility in testing.5.Apparatus and Materials5.1 Test Polish.5.2 Control PolishThe control polish is selected for com-parison to the test polish.It may be a competitive product,amodified formulation of the test polish,etc.It should berecognized that automotive polishes are formulated to performdifferent functions.This should be taken into account wheninterpreting results and choosing the control polish.5.3 Test SubstratesThe test substrate shall be one forwhich the test polish is intended(Note 1).The test surface shallbe in good physical condition,not badly cracked,scratched,orotherwise damaged so as to interfere with evaluation of polishproperties.The minimum test surface area for each sampleshall be 1290 cm2.NOTE1It is important to select a test substrate for which a particularpolish is intended.For example,if a particular polish is intended for acertain make of car only,then the test substrate should reflect this.Standard paint panels that were previously available through ASTM havebeen discontinued as of January 1,1988.It became very difficult tomaintain paint panels that were representative of all current and past painttechnologies used to manufacture automotive finishes.Since 5.3 requiresthat the test substrate be one for which the test polish is intended,it is inthe best interest of the user of this practice to determine and obtain theappropriate test surface or coating,or both.ASTM Committee D21 onPolishes suggests if further assistance is needed in determining orobtaining appropriate test substrates that contact be made with automotivepaint manufacturers,automobile manufacturers,or re-painting services.5.4 Polishing ClothThe same type and size of polishingcloth shall be used with each sample tested.Separate clothsshall be used for each sample.Materials such as washed cheesecloth,rumple cloth,flannel,cotton diaper cloth,and nonwovenfabrics are suitable for this purpose.Felt or paper shall not beused.5.5 Cleaning Solvent:5.5.1 Aliphatic solvents with kauri butanol(Kb)values lessthan 38.(See Test Method D1133.)5.5.2 Water/isopropanol(70/30).5.6 Eye Droppers and Distilled or Deionized Water.5.7 Masking Tape,with a 9.5-mm width.5.8 Thermometer.5.9 Humidity Gage.1This practice is under the jurisdiction of ASTM Committee D21 on Polishesand is the direct responsibility of Subcommittee D21.04 on Performance Tests.Current edition approved Oct.1,2013.Published October 2013.Originallyapproved in 1979.Last previous edition approved in 2007 as D3836 94(2007).DOI:10.1520/D3836-13.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Test Conditions6.1 The equilibrated temperature and relative humidity ofthe test runs shall be measured and recorded.The temperatureshall be within 13 to 29C with a relative humidity of 20 to80%.6.2 The substrate shall have the same temperature as thesurrounding area.7.Personnel and Instructions7.1 The application and evaluation of the test and controlpolishes requires four individuals.They shall be capable ofmaking discriminating judgm