1、Designation: C1482 12Standard Specification forPolyimide Flexible Cellular Thermal and Sound AbsorbingInsulation1This standard is issued under the fixed designation C1482; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、 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 specification covers the composition and physicalproperties of lightweight, flexible open-cell polyimide foamins
3、ulation intended for use as thermal and sound-absorbinginsulation for temperatures from -328F up to +572F (-200Cand +300C) in commercial and industrial environments.1.1.1 Annex A1 includes faced polyimide foam as specifiedby the U.S. Navy for marine applications.1.1.2 This standard is designed as a
4、material specificationand not a design document. Physical property requirementsvary by application and temperature. No single test is adequatefor estimating either the minimum or maximum use tempera-ture of polyimide foam under all possible conditions. Consultthe manufacturer for specific recommenda
5、tions and physicalproperties for specific applications.1.1.3 The use of an appropriate vapor retarder is required inall applications where condensation could occur and cause adecrease in thermal performance or affect other system prop-erties.1.2 The values stated in inch-pound units are to be regard
6、edas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard is used to measure and describe theresponse of materials, products, or assemblies to heat and flameunder controlled condition
7、s, but does not by itself incorporateall factors required for fire-hazard or fire-risk assessment of thematerials, products, or assemblies under actual fire conditions.1.4 This standard does not purport to address all of thesafety concerns associated with its use. It is the responsibilityof the user
8、 to establish appropriate safety and health practicesand determine the applicability of regulatory requirementsprior to use.NOTE 1The subject matter of this material specification is not coveredby any other ASTM specification. There is no known ISO standardcovering the subject of this standard.2. Re
9、ferenced 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 Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC302
10、 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal InsulationC335 Test Method for Steady-State Heat Transfer Propertiesof Pipe InsulationC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature T
11、hermal InsulationC421 Test Method for Tumbling Friability of PreformedBlock-Type and Preformed Pipe-Covering-Type ThermalInsulationC423 Test Method for SoundAbsorption and SoundAbsorp-tion Coefficients by the Reverberation Room MethodC447 Practice for Estimating the Maximum Use Tempera-ture of Therm
12、al InsulationsC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC585 Practice for Inner and Outer Diameters of ThermalInsulation for Nominal Sizes of Pipe and TubingC634 Terminology Relating to Building and EnvironmentalAcousticsC665 Specificat
13、ion for Mineral-Fiber Blanket Thermal Insu-lation for Light Frame Construction and ManufacturedHousingC1045 Practice for Calculating Thermal Transmission Prop-erties Under Steady-State ConditionsC1058 Practice for Selecting Temperatures for Evaluatingand Reporting Thermal Properties of Thermal Insul
14、ationC1114 Test Method for Steady-State Thermal Transmission1This 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 Sept. 1, 20
15、12. Published November 2012. Originallyapproved in 2000. Last previous edition approved in 2011 as C1482 11. DOI:10.1520/C1482-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informat
16、ion, 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 States1Properties by Means of the Thin-Heater ApparatusC1304 Test Method for Assessing the Odor Emission ofThermal Insulatio
17、n MaterialsC1338 Test Method for Determining Fungi Resistance ofInsulation Materials and FacingsC1559 Test Method for Determining Wicking of FibrousGlass Blanket Insulation (Aircraft Type)D395 Test Methods for Rubber PropertyCompression SetD543 Practices for Evaluating the Resistance of Plastics toC
18、hemical ReagentsD638 Test Method for Tensile Properties of PlasticsD2126 Test Method for Response of Rigid Cellular Plasticsto Thermal and Humid AgingD3574 Test Methods for Flexible Cellular MaterialsSlab,Bonded, and Molded Urethane FoamsD3675 Test Method for Surface Flammability of FlexibleCellular
19、 Materials Using a Radiant Heat Energy SourceE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE96/E96M Test Methods for Water Vapor Transmission ofMaterialsE176 Terminology of Fire StandardsE662 Test Method for Specific Optical Density of SmokeGenerated by Solid MaterialsE795
20、Practices for Mounting Test Specimens During SoundAbsorption TestsE800 Guide for Measurement of Gases Present or GeneratedDuring FiresE1354 Test Method for Heat and Visible Smoke ReleaseRates for Materials and Products Using an Oxygen Con-sumption CalorimeterE2231 Practice for Specimen Preparation a
21、nd Mounting ofPipe and Duct Insulation Materials to Assess SurfaceBurning Characteristics2.2 U.S. Federal Standards:FAR 25.853(a), Appendix F, Part 1, (a) (1) (i) Test Criteriaand Procedures for Showing Compliance with Sec.25.853, or 25.8553FAR 25.856(a), Appendix F, Part VI, Test Method toDetermine
22、 the Flammability and Flame Propagation Char-acteristics of Thermal/Acoustic Insulation MaterialsMIL-C-20079 Cloth, Glass; Tape, Textile Glass; and Thread,Glass4MIL-A-3316 Adhesive, Fire-Resistant, Thermal Insulation4DOD-E-24607 Enamel, Interior, Nonflaming (Dry), Chlori-nated Alkyd Resin, Semigloss
23、 (Metric)42.3 Private Sector Standards:Boeing BSS 7239 Test Method for Toxic Gas Generation byMaterials on Combustion5TAPPI T 803 Puncture and Stiffness Test of ContainerBoard6TM-232 Vertical Pipe-Chase Test to Determine Flame-Propagation Characteristics of Pipe Covering73. Terminology3.1 Definition
24、sTerms used in this specification are definedin Terminology C168, Terminology C634, and TerminologyE176. In the case of a conflict, Terminology C168 shall be thedominant authority.3.2 Definitions of Terms Specific to This Standard:3.2.1 flexible cellular producta cellular organic polymericmaterial t
25、hat will not rupture when a specimen 8 by 1 by 1 in.(200 by 25 by 25 mm) is bent around a 1 in. (25 mm) diametermandrel at a uniform rate of one lap in 5 sec. at a temperaturebetween 64 and 85F (18 and 29C), in accordance with thedescription of a flexible cellular product (currently Subsection3.1.3)
26、 in Test Methods D3574.3.2.2 slaba rectangular section, piece, or sheet of foamthat is cut from a bun, or block of foam.3.2.3 polyimide foama flexible cellular product in whichthe bonds formed between monomers during polymerizationare imide or amide bonds. The theoretical mole fraction ofimide bonds
27、 must be greater than the theoretical mole fractionof amide bonds.4. Classification4.1 The flexible polyimide cellular insulations of this speci-fication are classified into Types I through VII as listed inTables 1 and 2 (Note 2). Type I is further subdivided into twogrades based on maximum allowabl
28、e thermal conductivity at75 F (24 C). The Types II and III are subdivided into classes(Note 3).NOTE 2Although all types find application in a wide variety ofmarkets, the current primary market for each type is as follows:Type Imarine and industrial applications.Type IIType II is Type I foam faced an
29、d used in specific marineapplications, as specified for the U.S. Navy in Annex A1.Type IIIType III is Type I foam pipe shaped and used in specificmarine applications, as specified for the U.S. Navy in Annex A1.Types IV, V, and VIIaerospace applications depending on density.Type VIapplications requir
30、ing improved high temperature and fireperformance.NOTE 3The Type II and Type III designations as well as thesubdivision of Types into Classes is to maintain uniformity with existingU.S. Navy nomenclature (Annex A1).5. Materials and Manufacture5.1 Polyimide foam shall be manufactured from the appro-p
31、riate monomers, and necessary compounding ingredients toconform to 3.2.3. This is not intended to imply that foamproducts made using different materials are equivalent withrespect to all physical properties.3Federal Aviation Regulations Part 25 (Airworthiness Standards, TransportCategory Aircraft, a
32、nd Section 25.853. Procedure in appendix F, Part I, (a) (1) (i)and (ii). Available from Superintendent of Documents, U.S. Government PrintingOffice P.O. Box 371954, Pittsburgh, PA 15250-7954.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelph
33、ia, PA 19111-5098, http:/www.dodssp.daps.mil.5Available from Boeing Commercial Airplane Group, Material Division, P.O.Box 3707, Seattle, WA 98124-2207.6Available from Technical Association of the Pulp and Paper Industry (TAPPI),15 Technology Parkway South, Norcross, GA 30092, http:/www.tappi.org.7Av
34、ailable from Armstrong World Industries, Inc., Research and Development,P.O. Box 3511, Lancaster, PA 17604.C1482 1226. Physical Properties6.1 The insulation shall conform to the requirements inTables 1 and 2 for each type, unless specifically statedotherwise by agreement between the supplier and the
35、 pur-chaser. Tests shall be made in accordance with the methodsspecified in 11.1-11.20.6.1.1 Upper Temperature LimitUpper temperature limitshall be determined according to 11.4 at the intended maximumuse temperature of the application, or at a temperature deter-mined by agreement between the purchas
36、er and manufacturer.6.1.2 Burning CharacteristicsThe uncoated and unfacedfoam shall conform to the requirements in Tables 1 and 2 foreach type, when tested in accordance with 11.12-11.20, withoutthe use of flame/smoke or heat suppressant barriers or coatings.6.1.3 Sound Absorbing PerformanceUnless s
37、pecificallyotherwise agreed to between the supplier and the purchaser, alltests shall be made in accordance with the methods specified in11.19.6.2 The values stated in Tables 1 and 2 are not to be used asdesign values. It is the responsibility of the buyer to specifyTABLE 1 Polyimide Foam Classifica
38、tion (inch-pound)TYPE IGrade 1TYPE IGrade 2TYPE IV TYPE V TYPE VI TYPE VIIDensity, range, lb/ft30.360.53 0.360.53 0.280.37 0.500.58 0.350.55 0.420.52Maximum Apparent Thermal Conductivity Btu-in./h ft2F238 F 0.14 0.14 0.14 0.14 0.14 0.1458 F 0.23 0.22 0.23 0.23 0.23 0.2375 F 0.32 0.29 0.34 0.30 0.34
39、0.34212 F 0.51 0.47 0.54 0.47 0.50 0.50356 F 0.74 0.70 0.81 0.70 0.74 0.74572 F NAANAANAANAA1.15 NAAUpper Temperature Limit test temperature for C411, F 400 400 400 400 572 400High Temperature Stability%ofinitial tensile strength retained after 336 hoursin air oven at 400 F, min, %60 60 NAANAANAANAA
40、High Temperature Stability%ofinitial tensile strength retained after 336 hoursin air oven at 572 F, min, %NAANAANAANAA70 NAACompressive Strength, min, lb/in.2at 25% deflection 0.5 0.5 NAANAA0.5 NAA50% Compression Deflection, min, lb/in21.2 1.2 NAANAANAANAACompression Set, max, % NAANAA45 40 NAA40Ste
41、am AgingChange in Tensile Strength, max, %Dimensional and weight changes, max, %25102510NAANAANAANAA2510NAANAACorrosiveness pass pass pass pass pass passChemical Resistance pass pass pass pass pass passSurface Burning Characteristics, 2 in. thicknessFlame Spread Index, maxSmoke Developed Index, max1
42、01510151520152010151520Radiant Panel Surface Flammability, Radiant Panel Index, max 5 5 5 5 2 NAAVertical BurnBBurn Length, max, in. NAANAA22.4NAA2.4After Flame Time, max, sec NAANAA11A1Total heat release (2 min), max, Btu/ft279 79 NAANAANAANAAFlammability and Flame PropagationAfter Flame Time, max.
43、, sec.Flame Propagation, max., in.NAANAANAANAA3.02.03.02.0NAANAA3.02.0Maximum heat release rate, max, Btu/min-ft2106 106 NAANAANAANAASpecific Optical Smoke Density, Dm, maxnon-flaming modeflaming mode51051051051055510Total Hydrogen Halide (HCl, HBr, and HF) Gases in Smoke, Flaming Exposure,max, ppm
44、(Above background for empty chamber)10 10 NAANAA10 NAAToxic Gas Generation: max, ppmCO 300 300 300 300 300 300HCN 555 5 55HFHCl 10 10 10 10 10 10HBr 555 5 55SO2NOx 10 10 10 10 10 10Acoustical Absorption Coefficient 2 in. thickness, min Noise ReductionCoefficient (NRC)0.75 0.70 0.75 0.85 0.70 0.85Tum
45、bling Friability600 Revolutions, mass loss, Max % 3.0 3.0 3.0 3.0 3.0 3.01200 Revolutions, mass loss Max, % 5.0 5.0 5.0 5.0 5.0 5.0Odor Emission Pass Pass Pass Pass Pass PassFungi Resistance Pass Pass Pass Pass Pass PassWicking, 48h, distance above water line,max at 72F, in.0.5 0.5 0.5 0.5 0.5 0.5AN
46、A = not applicableBThe material shall not melt, drip, or flow when tested as required.C1482 123design requirements and obtain supporting documentationfrom the material supplier.7. Workmanship and Appearance7.1 The slab offered as saleable material shall be free offoreign materials and defects that w
47、ill adversely affect itsperformance in service.7.2 Voids and Surface DamageIt is acceptable to repairsurface damage due to handling, and voids that are between0.24 in. (6mm) and 1.4 in. (35mm) in diameter, and extendthrough the entire slab, by gluing, plugging, or cutting andsplicing. Voids greater
48、than 1.4 in. (35mm) in diameter shall because for rejection of the affected material. It is acceptable toachieve plugging using compression fit or by using adhesives.Adhesives used for repair shall not affect the overall smoke,fire, or acoustic performance required for the material in thisspecificat
49、ion. Material used for repairs shall be of the samecomposition and quality as undamaged material. The accep-tance of type and amount of repair shall be as agreed upon bythe supplier and the user.TABLE 2 Polyimide Foam Classification (SI units)TYPE IGrade 1TYPE IGrade 2TYPE IV TYPE V TYPE VI TYPE VIIDensity, range, kg/m35.88.5 5.88.5 4.55.9 8.09.3 5.68.8 6.78.3Maximum Apparent Thermal Conductivity W/m-K150 C 0.020 0.020 0.020 0.020 0.020 0.02050 C 0.033 0.032 0.033 0.033 0.033 0.03324 C 0.046 0.042 0.049 0.043 0.049 0.0
