1、Designation:D 5140 95An American National StandardStandard Guide forTesting Polyurethane“Poured in Place”Thermal BreakMaterials1,2This standard is issued under the fixed designation D 5140;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revis
2、ion,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.Scope1.1 This guide covers the preparation of a standard-size testsample and basic tests for physical property dete
3、rminations ofsolid thermal break materials.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.NOTE1There is no similar or equivalent ISO standard.1.3 The following precautionary caveat pertains only to thetest method portion,Se
4、ctions 6 and 14,of this specification:This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations p
5、rior to use.2.Referenced Documents2.1 ASTM Standards:C 177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate Apparatus3C 518 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe
6、 Heat Flow Meter Apparatus3C 1045 Practice for Calculating Thermal TransmissionProperties from Steady-State Heat Flux Measurements4D 256 Test Methods for Impact Resistance of Plastics andElectrical Insulating Materials5D 297 Test Methods for Rubber ProductsChemicalAnalysis6D 638M Test Method for Ten
7、sile Properties of PlasticsMetric5D 696 Test Method for Coefficient of Linear Thermal Ex-pansion of Plastics4D 790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-als4D 792 Test Methods for Specific Gravity(Relative Density)and Density of
8、Plastics by Displacement4D 883 Terminology Relating to Plastics4D 1600 Terminology for Abbreviated Terms Relating toPlastics4D 1622 Test Method forApparent Density of Rigid CellularPlastics4D 2240 Test Method for Rubber PropertyDurometerHardness5E 228 Test Method for Linear Thermal Expansion of Soli
9、dMaterials with a Vitreous Silica Dilatometer73.Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nologies D 883 and D 1600,unless otherwise indicated.3.2 Descriptions of Terms Specific to This Standard:3.2.1 thermal break,na solid or cellular material,orcombination of materials,of
10、low thermal transmission placedbetween components of high thermal transmission in order toreduce the heat flow across the assembly.1This guide is under the jurisdiction of ASTM Committee D-20 on Plastics andis the direct responsibility of Subcommittee D20.24 on Plastic Building Products.Current edit
11、ion approved June 15,1995.Published August 1995.Last previousedition D 5140 90.Last previous edition D 5140 90.3Annual Book of ASTM Standards,Vol 04.06.4This guide was revised to include an ISO equivalency statement and a sectionon Keywords.5Annual Book of ASTM Standards,Vol 08.01.6Annual Book of AS
12、TM Standards,Vol 09.01.7Annual Book of ASTM Standards,Vol 14.021Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.4.Significance and Use4.1 Tests made on thermal break materials can be ofconsiderable value in comparing physical properties of
13、 differ-ent materials,in controlling manufacturing processes,and as abasis for writing specifications.5.Sampling5.1 Test samples can be made in an aluminum mold inaccordance with the manufacturers recommended procedures.The recommended mold sizes are 305 by 152 by 6.2 mm(12by 6 by14in.)or,305 by 152
14、 by 12.5 mm(12 by 6 by12in.).5.2 Because of the effect on physical properties,the moldtemperature used in the sample preparation shall be 23 6 2C(73.4 6 3.6F).5.3 The test sample for reference purposes shall be allowedto age a minimum of seven days at 23 6 2C(73.46 3.6F)and 50 6 5%relative humidity
15、before testing.6.Density6.1 Determine the apparent overall density of the moldedproduct in accordance with Test Method D 1622.6.2 ReportReport the following information:6.2.1 Apparent density,to the nearest 1.6 kg/m3(0.10lb/ft3),and6.2.2 Section thickness.7.Specific Gravity7.1 Determine the specific
16、 gravity of regular-or irregular-shaped materials in accordance with Test Methods D 792.8.Tensile Properties8.1 Determine the tensile and elongation in accordance withTest Method D 638M,specimen Type I.The test specimensshall be cut from the 6.3-mm(14-in.)sample and the crossheadspeed shall be 5 mm(0.2 in.)/min.Report the tensile,elonga-tion,any yield point,and percent strain at yield point if present.9.Hardness9.1 Determine the hardness in accordance with Test MethodD 2240 on the 6.3-mm(14-in.)
