1、Designation:D348911Standard Test Methods forMicrocellular Urethane Materials1This standard is issued under the fixed designation D3489;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
2、indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 These test methods cover the preparation of a standard-size test sample and basic tests for physical property determi-nations of microcellular urethane material
3、s.1.2 The values stated in SI units are to be regarded asstandard.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-pri
4、ate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this standard.2.Referenced Documents2.1 ASTM Standards:2D256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD395 Test Methods f
5、or Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD573 Test Method for RubberDeterioration in an AirOvenD575 Test Methods for Rubber Properties in CompressionD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermopla
6、stic ElastomersD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD1052 Test Method for Measuring Rubber DeteriorationCut Growth Using Ros
7、s Flexing ApparatusD1622 Test Method for Apparent Density of Rigid CellularPlasticsD1630 Test Method for Rubber PropertyAbrasion Resis-tance(Footwear Abrader)D2240 Test Method for Rubber PropertyDurometer Hard-nessD2584 Test Method for Ignition Loss of Cured ReinforcedResinsD2632 Test Method for Rub
8、ber PropertyResilience byVertical ReboundD3040 Practice for Preparing Precision Statements for Stan-dards Related to Rubber and Rubber Testing(Withdrawn1987)3D3137 Test Method for Rubber PropertyHydrolytic Sta-bility(Withdrawn 0)3D3389 Test Method for Coated Fabrics Abrasion Resistance(Rotary Platfo
9、rm Abrader)D3574 Test Methods for Flexible Cellular MaterialsSlab,Bonded,and Molded Urethane FoamsD3768 Test Method for Microcellular UrethanesFlexuralRecoveryD3769 Test Method for Microcellular UrethanesHigh-Temperature SagG195 Guide for Conducting Wear Tests Using a RotaryPlatform Abraser3.Termino
10、logy3.1 Definitions of Terms Specific to This Standard:3.1.1 microcellular urethanean elastomeric material madeby the interaction of a polyol and an organic isocyanate,havingcell diameters in the range from 0.0001 to 0.001 mm,with aminimum density of 160 kg/m3(10 lb/ft3).NOTE2In the following sectio
11、ns,the term“retaining the moldedsurfaces”refers to the two major surfaces(faces)of the sample and/orspecimens prepared from it and was not meant to include the minorsurfaces(ends or sides).4.Significance and Use4.1 Tests made on materials herein prescribed can be ofconsiderable value in comparing ph
12、ysical properties of differ-ent materials,in controlling manufacturing processes,and as abasis for writing specifications.1These test methods are under the jurisdiction of ASTM Committee D20 onPlastics and are the direct responsibility of Subcommittee D20.22 on CellularMaterials-Plastics and Elastom
13、ers.Current edition approved Dec.1,2011.Published December 2011.Originallyapproved in 1976.Last previous edition approved in 2006 as D3489-06.DOI:10.1520/D3489-06.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of
14、ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO
15、Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 Before proceeding with these test methods,referenceshould be made to the specification of the material being tested.Any test specimen preparation,conditioning,or dimensions,orcombination thereof,and testing parameters covered in thematerial
16、s specification shall take precedence over those men-tioned in these test methods.If there are no materialspecifications,then the default conditions apply.5.Sampling5.1 Test samples can be made in any suitable mold.Thefollowing three sizes are recommended(length,width,andthickness):305 by 152 by 3.15 mm(12 by 6 by18in.),305 by152 by 6.3 mm(12 by 6 by14in.),and 305 by 152 by 12.5 mm(12 by 6 by12in.).5.2 The procedure used to prepare the test sample relating tocomponent ratios,temperature,mixing d
