1、Designation: C 1482 08Standard Specification forPolyimide Flexible Cellular Thermal and Sound AbsorbingInsulation1This standard is issued under the fixed designation C 1482; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、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 specification covers the composition and physicalproperties of lightweight, flexible open-cell polyimide foami
3、nsulation 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
4、a 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 recommen
5、dations 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 rega
6、rdedas the standard. The SI units are given in parentheses forinformation only.21.3 This standard does not purport to address all of thesafety concerns associated with its use. It is the responsibilityof the user to establish appropriate safety and health practicesand determine the applicability of
7、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. Referenced Documents2.1 ASTM Standards:3C 165 Test Method for Measuring Compressive Proper
8、tiesof Thermal InsulationsC 168 Terminology Relating to Thermal InsulationC 177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC 302 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal Ins
9、ulationC 335 Test Method for Steady-State Heat Transfer Proper-ties of Pipe InsulationC 390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal InsulationC 423 Test Method for Sound Absorption and Sound Ab-sorption Co
10、efficients by the Reverberation Room MethodC 447 Practice for Estimating the Maximum Use Tempera-ture of Thermal InsulationsC 518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC 634 Terminology Relating to Building and Environmen-tal AcousticsC
11、665 Specification for Mineral-Fiber Blanket Thermal In-sulation for Light Frame Construction and ManufacturedHousingC 1045 Practice for Calculating Thermal TransmissionProperties Under Steady-State ConditionsC 1058 Practice for Selecting Temperatures for Evaluatingand Reporting Thermal Properties of
12、 Thermal InsulationC 1114 Test Method for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater ApparatusD 395 Test Methods for Rubber PropertyCompressionSetD 543 Practices for Evaluating the Resistance of Plastics toChemical Reagents1This specification is under the jurisdiction of
13、 ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.22 onOrganic and Nonhomogeneous Inorganic Thermal Insulations.Current edition approved May 1, 2008. Published June 2008. Originallyapproved in 2000. Last previous edition approved in 2002 as C 1482 021.2Wit
14、h the exception of the values given for heat release (Test Method E 1354),where the SI units are regarded as the standard. The inch-pound units are forinformation only.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual
15、 Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D 638 Test Method for Tensile Properties of PlasticsD 2126 Test Method for Res
16、ponse of Rigid Cellular Plasticsto Thermal and Humid AgingD 3574 Test Methods for Flexible Cellular MaterialsSlab,Bonded, and Molded Urethane FoamsD 3675 Test Method for Surface Flammability of FlexibleCellular Materials Using a Radiant Heat Energy SourceE84 Test Method for Surface Burning Character
17、istics ofBuilding MaterialsE 96/E 96M Test Methods for Water Vapor Transmission ofMaterialsE 176 Terminology of Fire StandardsE 662 Test Method for Specific Optical Density of SmokeGenerated by Solid MaterialsE 795 Practices for Mounting Test Specimens DuringSound Absorption TestsE 800 Guide for Mea
18、surement of Gases Present or Gener-ated During FiresE 1354 Test Method for Heat and Visible Smoke ReleaseRates for Materials and Products Using an Oxygen Con-sumption CalorimeterE 2231 Practice for Specimen Preparation and Mounting ofPipe and Duct Insulation Materials to Assess SurfaceBurning Charac
19、teristics2.2 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 25.8554FAR 25.856(a), Appendix F, Part VI, Test Methods toDetermine the Flammability and Flame Propagation Char-acteristics of Thermal/Acoustic In
20、sulation Materials4MIL-C-20079 Cloth, Glass; Tape, Textile Glass; andThread, Glass5MIL-A-3316 Adhesive, Fire-Resistant, Thermal Insulation5DOD-E-24607 Enamel, Interior, Nonflaming (Dry), Chlori-nated Alkyd Resin, Semigloss (Metric)52.3 Private Sector Standards:Boeing BSS 7239 Test Method for Toxic G
21、as Generation byMaterials on Combustion6TAPPI T 803 Puncture and Stiffness Test of ContainerBoard7TM-232 Vertical Pipe-Chase Test to Determine Flame-Propagation Characteristics of Pipe Covering83. Terminology3.1 DefinitionsTerms used in this specification are definedin Terminology C 168, Terminology
22、 C 634, and TerminologyE 176. In the case of a conflict, Terminology C 168 shall be thedominant authority.3.2 Definitions of Terms Specific to This Standard:3.2.1 flexible cellular producta cellular organic polymericmaterial that will not rupture when a specimen 8 by 1 by 1 in.(200 by 25 by 25 mm) i
23、s 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) in Test Methods D 3574.3.2.2 slaba rectangular section, piece, or sheet o
24、f 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 must be greater than the theoretical mole fractionof amide bonds.4. Clas
25、sification4.1 The flexible polyimide cellular insulations of this speci-fication are classified into Types I through VI as listed in Tables1 and 2 (Note 2). Type I is further subdivided into two gradesbased on maximum allowable thermal conductivity at 75 F(24 C). The Types II and III are subdivided
26、into classes (Note3).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 and used in specific marineapplications, as specified for the U.S. Navy in A
27、nnex 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 and Vaerospace applications depending on density.Type VIapplications requiring improved high temperature and fireperformance.NOTE 3The Type II and Type III
28、 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-priate monomers, and necessary compounding ingredients toconform to 3.2.3. This i
29、s not intended to imply that foamproducts made using different materials are equivalent withrespect to all physical properties.6. Physical Properties6.1 The insulation shall conform to the requirements inTables 1 and 2 for each type, unless specifically statedotherwise by agreement between the suppl
30、ier and the 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 applicationsintended maximum use temperature or at a temperature deter-mined by agreement between the pur
31、chaser and manufacturer.4Federal Aviation Regulations Part 25 (Airworthiness Standards, TransportCategory Aircraft, and 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 152
32、50-7954.5Available from the Standardization Document Order Desk, 700 RobbinsAvenue, Building 4D, Philadelphia, PA 19111-5094.6Available from Boeing Commercial Airplane Group, Material Division, P.O.Box 3707, Seattle, WA 98124-2207.7Available from Technical Association of the Pulp and Paper Industry
33、(TAPPI),15 Technology Parkway South, Norcross, GA 30092, http:/www.tappi.org.8Available from Armstrong World Industries, Inc., Research and Development,P.O. Box 3511, Lancaster, PA 17604.C14820826.1.2 Burning CharacteristicsThe uncoated and unfacedfoam shall conform to the requirements in Tables 1 a
34、nd 2 foreach type, when tested in accordance with 11.12-11.19, withoutthe use of flame/smoke or heat suppressant barriers or coatings.6.1.3 Sound Absorbing PerformanceUnless specificallyotherwise agreed to between the supplier and the purchaser, alltests shall be made in accordance with the methods
35、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 specifydesign requirements and obtain supporting documentationfrom the material supplier.7. Workmanship and Appearance7.1 The slab offered as saleable material shall
36、 be free offoreign materials and defects that will adversely affect itsperformance in service.7.2 Voids and Surface DamageSurface damage due tohandling, and voids that are between 0.24 in. (6 mm) and 1.4in. (35 mm) in diameter, and extend through the entire slab,may be repaired by gluing, plugging,
37、or cutting and splicing.Voids greater than 1.4 in. (35 mm) in diameter shall be causefor rejection of the affected material. Plugging may beTABLE 1 Polyimide Foam Classification (inch-pound)TYPE IGrade 1TYPE IGrade 2TYPE IV TYPE V TYPE VIDensity, max, lb/ft30.48 0.48 0.37 0.55 0.50Maximum Apparent T
38、hermal Conductivity Btu-in./h ft2F238 F 0.14 0.14 0.14 0.14 0.1458 F 0.23 0.22 0.23 0.23 0.2375 F 0.32 0.29 0.34 0.30 0.34212 F 0.51 0.47 0.54 0.47 0.50356 F 0.74 0.70 0.81 0.70 0.74572 F NAANAANAANAA1.15Upper Temperature Limit test temperature for C411, F 400 400 400 400 572High Temperature Stabili
39、ty%ofinitial tensile strength retained after 336 hoursin air oven at 400 F, min, %60 60 NAANAANAAHigh Temperature Stability%ofinitial tensile strength retained after 336 hoursin air oven at 572 F, min, %NAANAANAANAA70Tensile Strength, min, lb/in.28.5 8.5 2.8 8.5 3.9Compressive Strength, min, lb/in.2
40、at 25% deflection 0.5 0.5 NAANAA0.550% Compression Deflection, min, lb/in21.2 1.2 NAANAANAACompression Set, max, % NAANAA40 40 NAASteam AgingChange in Tensile Strength, max, %Dimensional and weight changes, max, %25102510NAANAANAANAA2510Corrosiveness pass pass pass pass passChemical Resistance pass
41、pass pass pass passSurface Burning Characteristics, 2 in. thicknessBFlame Spread Index, maxSmoke Developed, Index, max10151015152015201015Radiant Panel Surface Flammability, Radiant Panel Index, maxB55552Vertical BurnB,CBurn Length, max, in. NAANAA22.4NAAAfter Flame Time, max, sec NAANAA11AFlame Pro
42、pagationB,CAfter Flame Time, max, sec NAANAA333Propagation Length, max, in. NAANAA222Total heat release, max, Btu/ft2B53 53 NAANAANAAMaximum heat release rate, max, Btu/min-ft2B106 106 NAANAANAASpecific Optical Smoke Density, Dm, maxBnon-flaming modeflaming mode51051051051055Total Hydrogen Halide (H
43、Cl, HBr, and HF) Gases in Smoke, Flaming Exposure,max, ppm (Above background for empty chamber)B10 10 10 10 10Toxic Gas Generation: max, ppmBCO 300 300 300 300 300HCN 55555HFHCl 10 10 10 10 10HBr 55555SO2NOx 10 10 10 10 10Acoustical Absorption Coefficient 2 in. thickness, min Noise ReductionCoeffici
44、ent (NRC)0.75 0.70 0.75 0.85 0.70ANA = not applicableBThis specification shall be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratoryconditions and shall not be used to describe or appraise the fire hazard or fir
45、e risk under actual fire conditions.CThe material shall not melt, drip, or flow when tested as required.C1482083achieved using compression fit or by using adhesives. Adhe-sives used for repair shall not affect the overall smoke, fire, oracoustic performance required for the material in this specifi-
46、cation. Material used for repairs shall be of the same compo-sition and quality as undamaged material. The acceptance oftype and amount of repair shall be as agreed upon by thesupplier and the user.8. Sampling8.1 SamplingThe insulation shall be sampled in accor-dance with Practice C 390. Otherwise,
47、specific provisions forsampling shall be as agreed upon between the user and thesupplier.8.2 SpecimenFor polymide foam insulation, specimens ofdimensions 12 in. by 12 in. by 1 in. (300 mm by 300 mm by25 mm) are sufficient for purposes of acceptance inspection ofsamples.9. Qualification Requirements9
48、.1 The following requirements are generally employed forinitial material or product qualification:9.1.1 Upper Temperature Limit,79.1.2 Tensile Strength,9.1.3 Compressive Strength,9.1.4 Compression Set,TABLE 2 Polyimide Foam Classification (SI units)TYPE IGrade 1TYPE IGrade 2TYPE IV TYPE V TYPE VIDen
49、sity, max, kg/m37.7 7.7 5.9 8.8 8.0Maximum Apparent Thermal Conductivity W/m-K150 C 0.020 0.020 0.020 0.020 0.02050 C 0.033 0.032 0.033 0.033 0.03324 C 0.046 0.042 0.049 0.043 0.049100 C 0.074 0.068 0.078 0.068 0.072180 C 0.107 0.101 0.117 0.101 0.107300 C NAANAANAANAA0.166Upper Temperature Limit test temperature for C411, C 204 204 204 204 300High Temperature Stability%ofinitial tensile strength retained after 336 hoursin air oven at 204 C, min, %60 60 NAANAANAAHigh Temperature Stability%ofinitial tensile strength retain
