1、Designation: C1482 12C1482 17Standard 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
2、 year 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 physical properties of lightweight, flexible open-cell polyimid
3、e foaminsulation intended for use as thermal and sound-absorbing insulation for temperatures from 328F up to +572F (200C and+300C) in commercial and industrial environments.1.1.1 Annex A1 includes faced polyimide foam as specified by the U.S. Navy for marine applications.1.1.2 This standard is desig
4、ned as a material specification and not a design document. Physical property requirements vary byapplication and temperature. No single test is adequate for estimating either the minimum or maximum use temperature ofpolyimide foam under all possible conditions. Consult the manufacturer for specific
5、recommendations and physical properties forspecific applications.1.1.3 The use of an appropriate vapor retarder is required in all applications where condensation could occur and cause adecrease in thermal performance or affect other system properties.1.2 The values stated in inch-pound units are to
6、 be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.3 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame undercontrol
7、led conditions, but does not by itself incorporate all factors required for fire-hazard or fire-risk assessment of the materials,products, or assemblies under actual fire conditions.1.4 This standard does not purport to address all of the safety concerns concerns, if any, associated with its use. It
8、 is theresponsibility of the user of this standard to establish appropriate safety safety, health and healthenvironmental practices anddetermine the applicability of regulatory requirementslimitations prior to use.NOTE 1The subject matter of this material specification is not covered by any other AS
9、TM specification. There is no known ISO standard coveringthe subject of this standard.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Gui
10、des and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measuring Compressive Properties of Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-
11、State Heat Flux Measurements and Thermal Transmission Properties by Means of theGuarded-Hot-Plate ApparatusC302 Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal InsulationC335 Test Method for Steady-State Heat Transfer Properties of Pipe InsulationC390 Practice for Samp
12、ling and Acceptance of Thermal Insulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation1 This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on Organic andNonhomogen
13、eous Inorganic Thermal Insulations.Current edition approved Sept. 1, 2012Sept. 1, 2017. Published November 2012September 2017. Originally approved in 2000. Last previous edition approved in 20112012as C1482 11.C1482 12. DOI: 10.1520/C1482-12.10.1520/C1482-17.2 For referencedASTM standards, visit the
14、ASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an
15、indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to
16、be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C421 Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal InsulationC423 Test Method for Sound Absorpt
17、ion and Sound Absorption Coefficients by the Reverberation Room MethodC447 Practice for Estimating the Maximum Use Temperature of Thermal InsulationsC518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter ApparatusC585 Practice for Inner and Outer Diameters
18、of Thermal Insulation for Nominal Sizes of Pipe and TubingC634 Terminology Relating to Building and Environmental AcousticsC665 Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured HousingC1045 Practice for Calculating Thermal Transmission Properti
19、es Under Steady-State ConditionsC1058 Practice for Selecting Temperatures for Evaluating and Reporting Thermal Properties of Thermal InsulationC1114 Test Method for Steady-State Thermal Transmission Properties by Means of the Thin-Heater ApparatusC1304 Test Method for Assessing the Odor Emission of
20、Thermal Insulation MaterialsC1338 Test Method for Determining Fungi Resistance of Insulation Materials and FacingsC1559 Test Method for Determining Wicking of Fibrous Glass Blanket Insulation (Aircraft Type)D395 Test Methods for Rubber PropertyCompression SetD543 Practices for Evaluating the Resista
21、nce of Plastics to Chemical ReagentsD638 Test Method for Tensile Properties of PlasticsD2126 Test Method for Response of Rigid Cellular Plastics to Thermal and Humid AgingD3574 Test Methods for Flexible Cellular MaterialsSlab, Bonded, and Molded Urethane FoamsD3675 Test Method for Surface Flammabili
22、ty of Flexible Cellular Materials Using a Radiant Heat Energy SourceE84 Test Method for Surface Burning Characteristics of Building MaterialsE96/E96M Test Methods for Water Vapor Transmission of MaterialsE176 Terminology of Fire StandardsE662 Test Method for Specific Optical Density of Smoke Generat
23、ed by Solid MaterialsE795 Practices for Mounting Test Specimens During Sound Absorption TestsE800 Guide for Measurement of Gases Present or Generated During FiresE1354 Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen ConsumptionCalorimeterE2231 Practice
24、 for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface BurningCharacteristics2.2 U.S. Federal Standards:FAR 25.853(a),Appendix F, Part 1, (a) (1) (i) Test Criteria and Procedures for Showing Compliance with Sec. 25.853, or 25.8553FAR 25.856(a), Appendix F, Par
25、t VI, Test Method to Determine the Flammability and Flame Propagation Characteristics ofThermal/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
26、nated Alkyd Resin, Semigloss (Metric)42.3 Private Sector Standards:Boeing BSS 7239 Test Method for Toxic Gas Generation by Materials on Combustion5TAPPI T 803 Puncture and Stiffness Test of Container Board6TM-232 Vertical Pipe-Chase Test to Determine Flame-Propagation Characteristics of Pipe Coverin
27、g73. Terminology3.1 DefinitionsTerms used in this specification are defined in Terminology C168, Terminology C634, and Terminology E176.In the case of a conflict, Terminology C168 shall be the dominant authority.3.2 Definitions of Terms Specific to This Standard:3.2.1 flexible cellular producta cell
28、ular organic polymeric material that will not rupture when a specimen 8 by 1 by 1 in. (200by 25 by 25 mm) is bent around a 1 in. (25 mm) diameter mandrel at a uniform rate of one lap in 5 sec.s at a temperature between64 and 85F (18 and 29C), in accordance with the description of a flexible cellular
29、 product (currently Subsection 3.1.3) in TestMethods D3574.3.2.2 slaba rectangular section, piece, or sheet of foam that is cut from a bun, or block of foam.3 Federal Aviation Regulations Part 25 (Airworthiness Standards, Transport Category Aircraft, and Section 25.853. Procedure in appendix F, Part
30、 I, (a) (1) (i) and (ii).Available from Superintendent of Documents, U.S. Government Printing Office P.O. Box 371954, Pittsburgh, PA 15250-7954.4 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.
31、5 Available from Boeing Commercial Airplane Group, Material Division, P.O. Box 3707, Seattle, WA 98124-2207.6 Available from Technical Association of the Pulp and Paper Industry (TAPPI), 15 Technology Parkway South, Norcross, GA 30092, http:/www.tappi.org.7 Available from Armstrong World Industries,
32、 Inc., Research and Development, P.O. Box 3511, Lancaster, PA 17604.C1482 1723.2.3 polyimide foama flexible cellular product in which the bonds formed between monomers during polymerization areimide or amide bonds. The theoretical mole fraction of imide bonds must be greater than the theoretical mol
33、e fraction of amidebonds.4. Classification4.1 The flexible polyimide cellular insulations of this specification are classified into Types I through VII as listed in Tables 1and 2 (Note 2). Type I is further subdivided into two grades based on maximum allowable thermal conductivity at 75F (24C).The T
34、ypes II and III are subdivided into classes (Note 3).NOTE 2Although all types find application in a wide variety of markets, 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 marine applications, a
35、s specified for the U.S. Navy in Annex A1.Type IIIType III is Type I foam pipe shaped and used in specific marine applications, as specified for the U.S. Navy in Annex A1.Types IV, V, and VIIaerospace applications depending on density.Type VIapplications requiring improved high temperature and fire
36、performance.NOTE 3The Type II and Type III designations as well as the subdivision of Types into Classes is to maintain uniformity with existing U.S. Navynomenclature (Annex A1).5. Materials and Manufacture5.1 Polyimide foam shall be manufactured from the appropriate monomers, and necessary compound
37、ing ingredients to conformto 3.2.3. This is not intended to imply that foam products made using different materials are equivalent with respect to all physicalproperties.6. Physical Properties6.1 The insulation shall conform to the requirements in Tables 1 and 2 for each type, unless specifically st
38、ated otherwise byagreement between the supplier and the purchaser. Tests shall be made in accordance with the methods specified in 11.1 11.20.6.1.1 Upper Temperature LimitUpper temperature limit shall be determined according to 11.4 at the intended maximum usetemperature of the application, or at a
39、temperature determined by agreement between the purchaser and manufacturer.6.1.2 Burning CharacteristicsThe uncoated and unfaced foam shall conform to the requirements in Tables 1 and 2 for eachtype, when tested in accordance with 11.12 11.20, without the use of flame/smoke or heat suppressant barri
40、ers or coatings.6.1.3 Sound Absorbing PerformanceUnless specifically otherwise agreed to between the supplier and the purchaser, all testsshall be made in accordance with the methods specified in 11.19.6.2 The values stated in Tables 1 and 2 are not to be used as design values. It is the responsibil
41、ity of the buyer to specify designrequirements and obtain supporting documentation from the material supplier.7. Workmanship and Appearance7.1 The slab offered as saleable material shall be free of foreign materials and defects that will adversely affect its performancein service.7.2 Voids and Surfa
42、ce DamageIt is acceptable to repair surface damage due to handling, and voids that are between 0.24 in.(6 mm) and 1.4 in. (35 mm) in diameter, and extend through the entire slab, by gluing, plugging, or cutting and splicing. Voidsgreater than 1.4 in. (35 mm) in diameter shall be cause for rejection
43、of the affected material. It is acceptable to achieve pluggingusing compression fit or by using adhesives. Adhesives used for repair shall not affect the overall smoke, fire, or acousticperformance required for the material in this specification. Material used for repairs shall be of the same compos
44、ition and qualityas undamaged material. The acceptance of type and amount of repair shall be as agreed upon by the supplier and the user.8. Sampling8.1 SamplingThe insulation shall be sampled in accordance with Practice C390. Otherwise, specific provisions for samplingshall be as agreed upon between
45、 the user and the supplier.8.2 SpecimenFor polyimide foam insulation, specimens of dimensions 12 in. by 12 in. by 1 in. (300 mm by 300 mm by 25mm) are sufficient for purposes of acceptance inspection of samples.9. Qualification Requirements9.1 The following requirements shall be employed for initial
46、 material or product qualification:9.1.1 Upper Temperature Limit,9.1.2 Compressive Strength,9.1.3 Compression Set,9.1.4 Chemical Resistance,9.1.5 Apparent Thermal Conductivity at 75F (24C),9.1.6 Specific Optical Smoke Density,C1482 1739.1.7 Hydrogen Halide Gases in Smoke,TABLE 1 Polyimide Foam Class
47、ification (inch-pound)TYPE IGrade 1TYPE IGrade 2TYPE IV TYPE V TYPE VI TYPE VIIDensity, range, lb/ft3 0.360.53 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 0.14238F 0.14 0.14 0.14 0.14 0.14 0.1458 F 0.23 0.22 0.23 0.23
48、 0.23 0.2358F 0.23 0.22 0.23 0.23 0.23 0.2375 F 0.32 0.29 0.34 0.30 0.34 0.3475F 0.32 0.29 0.34 0.30 0.34 0.34212 F 0.51 0.47 0.54 0.47 0.50 0.50212F 0.51 0.47 0.54 0.47 0.50 0.50356 F 0.74 0.70 0.81 0.70 0.74 0.74356F 0.74 0.70 0.81 0.70 0.74 0.74572 F NAA NAA NAA NAA 1.15 NAA572F NAA NAA NAA NAA 1
49、.15 NAAUpper Temperature Limit test temperature for C411, F 400 400 400 400 572 400High Temperature Stability % of initial tensile strength retained after 336 hoursin air oven at 400 F, min, %60 60 NAA NAA NAA NAAHigh Temperature Stability % of initial tensile strength retained after 336 hin air oven at 400 F, min, %60 60 NAA NAA NAA NAAHigh Temperature Stability % of initial tensile strength retained after 336 hoursin air oven at 572 F, min, %NAA NAA NAA NAA 70 NAAHigh Temperature Stability % of initi
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