ASTM_D_2065_-_03_2011.pdf

Designation:D206503(Reapproved 2011)Standard Test Method forDetermination of Edge Performance of Composite WoodProducts Under Surfactant Accelerated Moisture Stress1This standard is issued under the fixed designation D2065;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 test method is intended to serve as a means formeasurement of swelling and cracking of the coated oruncoated edge of a composite wood substrate that has beensubjected to wetting by a test solution containing surface activeagent.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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 Standards:2D661 Test Method for Evaluating Degree of Cracking ofExterior PaintsE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 crack rating,na numerical value on a scale from 1to 10,with 10 representing no evidence of cracking of the edge(see Test Method D661).3.1.2 composite wood products,nboards or other struc-tural or decorative materials manufactured from wood fibers,flakes or strands and various resin binders consolidated underheat,or pressure,or both.4.Summary of Test Method4.1 A surfactant solution is placed in a tray that contains asponge.A preweighed and calipered panel with a coated edgeis placed with the edge in contact with the surfactant saturatedsponge for 2 h.The exposed panel is blotted dry,reweighed,recalipered,and inspected for edge cracking.Percentageweight and thickness changes are calculated and recorded.Edge cracking is rated in accordance with Test Method D661and recorded.5.Significance and Use5.1 This test method provides a measure of the dimensionalstability and integrity of the coated edge of various compositewood products under accelerated moisture stress.It is widelyused as an indicator or predictor of the anticipated performanceof composite wood products during exterior exposure.It maybe used for developmental evaluation of coatings,substrates,orboth.It may also be useful for quality control or monitoring ofthe production of coated or uncoated composite wood prod-ucts.6.Apparatus6.1 Wide Flat Tray or Pan,suitable to contain the requirednumber of sponges and test boards.The sides must be highenough to safely contain at least 6 mm(14in.)of solution.6.2 Rack or Holder,suitable to support the required numberof test boards at the nominal 60 angle.6.3 Micrometer or Vernier Caliper,of sufficient capacity forthe board thickness to be measured and capable of 0.1 mmaccuracy.6.4 Balance,with sufficient capacity(typically 400 g)and0.01 g accuracy.6.5 Suitable Saw,for cutting of samples.6.6 Common Household Cellulose Sponges,cut to suitablesize.7.Materials7.1 A sufficient supply of test solution.7.2 Appropriately identified test boards cut to proper size.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.52 on Factory Coated Wood Products.Current edition approved Nov.1,2011.Published November 2011.Originallyapproved in 1991.Last previous edition approved in 2003 as D2065 03.DOI:10.1520/D2065-03R11.2For referenced 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.Hazards8.1 When using saws,wear goggles,dust mask,and useproper machine safeguards to prevent injury.9.Procedure9.1 See Fig.1.9.2 Make the required test solution.3Pour solution into thetray to saturate all sponges,and allow to reach room tempera-ture.A 6-mm(14-in.)depth of solution in the tray works well.9.3 Cut board specimens to a suitable size.A10.2-cm(4-in.)by 12.7-cm(5-in.)size has been found to be convenient.The10.2-cm(4-in.)dimension should be the coated edge.Prepa-ration of triplicate specimens is recommended.9.4 Measure thickness of the samples along the edge to betested.Three measurements at 2.54-cm(1-in.)intervals(Fig.2)are recommended for a 10.2-cm(4-in.)specimen.Recordresults.9.5 Weigh the samples to the nearest 0.01 g and record.9.6 Place boards in the tray on spo