1、Designation:C59116Standard Specification forUnfaced Preformed Rigid Cellular PolyisocyanurateThermal Insulation1This standard is issued under the fixed designation C591;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers the types,physic
3、al properties,and dimensions of unfaced,preformed rigid cellular polyiso-cyanurate plastic material intended for use as thermal insula-tion on surfaces from-297F(-183C)to 300F(149C).Forspecific applications,the actual temperature limits shall beagreed upon by the manufacturer and purchaser.1.2 This
4、specification only covers“polyurethane modifiedpolyisocyanurate”thermal insulation which is commonly re-ferred to as“polyisocyanurate”thermal insulation.This stan-dard does not encompass all polyurethane modified materials.Polyurethane modified polyisocyanurate and other polyure-thane materials are
5、similar,but the materials will performdifferently under some service conditions.1.3 This standard is designed as a material specification,nota design document.Physical property requirements vary byapplication and temperature.At temperatures below-70F(-51C)the physical properties of the polyisocyanur
6、ate insula-tion at the service temperature are of particular importance.Below-70F(-51C)the manufacturer and the purchaser mustagree on what additional cold temperature performance prop-erties are required to determine if the material can functionadequately for the particular application.1.4 This sta
7、ndard addresses requirements of unfaced pre-formed rigid cellular polyisocyanurate thermal insulationmanufactured using blowing agents with an ozone depletionpotential of 0(ODP 0).1.5 When adopted by an authority having jurisdiction,codesthat address fire properties in many applications regulate the
8、use of the thermal insulation materials covered by this speci-fication.Fire properties are controlled by job,project,or otherspecifications where codes or government regulations do notapply.1.6 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are ma
9、thematicalconversions to SI units that are provided for information onlyand are not considered standard.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 hea
10、lth practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measuring Compressive Properties ofThermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measur
11、e-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC272/C272M Test Method for Water Absorption of CoreMaterials for Sandwich ConstructionsC303 Test Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC335/C335M Test Method for Stea
12、dy-State Heat TransferProperties of Pipe InsulationC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal InsulationC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter Ap
13、paratusC550 Test Method for Measuring Trueness and Squarenessof Rigid Block and Board Thermal InsulationC585 Practice for Inner and Outer Diameters of ThermalInsulation for Nominal Sizes of Pipe and TubingC871 Test Methods for Chemical Analysis of Thermal Insu-lation Materials for Leachable Chloride
14、,Fluoride,Silicate,and Sodium Ions1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.22 onOrganic and Nonhomogeneous Inorganic Thermal Insulations.Current edition approved April 15,2016.Published April 2016.Or
15、iginallyapproved in 1966.Last previous edition approved in 2015 as C591 15.DOI:10.1520/C0591-16.2For 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 Su
16、mmary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 C1045 Practice for Calculating Thermal Transmission Prop-erties Under Steady-State ConditionsC1058/C1058M Practice for Selecting Temperatures forEvaluating and Reporting Thermal Properties of ThermalInsulationC1114 Test Method for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater ApparatusC1303/C1303M Test Method for Predicting Long-Ter
