1、Comments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems Command, ATTN: SEA 05S, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact i
2、nformation can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 5640 INCH-POUND MIL-DTL-24688A 06 December 2011 SUPERSEDING DOD-I-24688 18 August 1987 DETAIL SPECIFICATION INSULATION, THERMAL AND ACOU
3、STIC ABSORPTIVE, CELLULAR POLYIMIDE FOAM This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers thermal and acoustic absorptive cellular polyimide foam insulation for use on bulkheads, overheads, and ventilat
4、ion ducting. This specification also covers preformed thermal pipe insulation for use on piping operating at temperatures up to 600 F in shipboard applications (see 6.1). 1.2 Classification. Flexible and rigid polyimide foam is to be furnished in the following types and classes as specified (see 6.2
5、). Type I - Unfaced (thermal and acoustic absorptive) panel Type II - Faced panel Class 1 - Fibrous glass cloth faced (thermal) Class 2 - Slotted base board faced with perforated fibrous glass cloth (acoustical) Class 3 - Faced with primer coated aluminized polyester/aluminum foil reinforced with a
6、fibrous glass scrim Class 4 - Faced with primer coated aluminized polyester/aluminum foil reinforced with a fibrous glass scrim laminated to a lightweight fibrous glass cloth Class 5 - Faced with primer coated white polyester film reinforced with a fibrous glass scrim Type III - Preformed pipe insul
7、ation (thermal) Class 1 - 0.55 pounds per cubic foot (lb/ft) (maximum) flexible foam unlagged (400 F upper temperature limit) Class 2 - 0.55 lb/ft (maximum) flexible foam prelagged with fibrous glass cloth (400 F upper temperature limit) Class 3 - 1.5 lb/ft (maximum) rigid foam unlagged (600 F upper
8、 temperature limit) Class 4 - 1.5 lb/ft (maximum) rigid foam prelagged with fibrous glass cloth (600 F upper temperature limit) Class 5 - 3 lb/ft (maximum) rigid foam unlagged (600 F upper temperature limit) Class 6 - 3 lb/ft (maximum) rigid foam prelagged with fibrous glass cloth (600 F upper tempe
9、rature limit) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24688A 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents
10、 cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of
11、this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents
12、are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-A-3316 - Adhesives, Fire-Resistant, Thermal Insulation MIL-C-20079 - Cloth, Glass; Tape, Textile Glass; and Thread, Glass and Wire-Reinforced Glass MIL-PRF-24596 - Coating Compounds, Nonflaming, Fire-Resistant
13、MIL-DTL-24607 - Enamel, Interior, Nonflaming (Dry), Chlorinated Alkyd Resin, Semigloss DEPARTMENT OF DEFENSE STANDARDS MIL-STD-1916 - DoD Preferred Methods for Acceptance of Product (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or https:/assist.daps.dla.m
14、il.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contra
15、ct. NAVAL SEA SYSTEMS COMMAND (NAVSEA) PUBLICATIONS S9510-AB-ATM-010 - Nuclear Powered Submarine Atmosphere Control Manual (Copies of the chapter titled “Material Control Program” are available from Commander, Naval Sea Systems Command, ATTN: SEA 05Z4, 1333 Isaac Hull Avenue, SE, Stop 5122, Washingt
16、on Navy Yard, DC 20376-5122 or online at https:/smcl.dt.navy.mil.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INT
17、ERNATIONAL ASTM C177 - Standard Test Method for Steady State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded Hot Plate Apparatus ASTM C302 - Standard Test Method for Density and Dimensions of Preformed Pipe Covering Type Thermal Insulation ASTM C335 - Standard Test
18、 Method for Steady State Heat Transfer Properties of Pipe Insulation ASTM C411 - Standard Test Method for Hot Surface Performance of High Temperature Thermal Insulation 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24688A ASTM C421 - Stan
19、dard Test Method for Tumbling Friability of Preformed Block Type and Preformed Pipe Covering Type Thermal Insulation ASTM C423 - Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method ASTM C447 - Standard Practice for Estimating the Maximum Use T
20、emperature of Thermal Insulations ASTM C518 - Standard Test Method for Steady State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus ASTM C585 - Standard Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and Tubing ASTM C665 - Standard Sp
21、ecification for Mineral Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing ASTM C1304 - Standard Test Method for Assessing the Odor Emission of Thermal Insulation Materials ASTM C1338 - Standard Test Method for Determining Fungi Resistance of Insulation Materials
22、and Facings ASTM C1559 - Standard Test Method for Determining Wicking of Glass Fiber Blanket Insulation (Aircraft Type) ASTM D1621 - Standard Test Method for Compressive Properties of Rigid Cellular Plastics ASTM D3574 - Standard Test Methods for Flexible Cellular Materials Slab, Bonded, and Molded
23、Urethane Foams ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials ASTM E662 - Standard Test Method for Specific Optical Density of Smoke Generated by Solid Materials ASTM E800 - Standard Guide for Measurement of Gases Present or Generated During Fires (Copies o
24、f these documents are available from ASTM International, 100 Barr Harbor Dr., P.O. Box C700, West Conshohocken, PA 19428-2959 or online at www.astm.org.) INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO) ISO 9705 - Fire Tests Full Scale Room Test for Surface Products ISO/IEC 17025 - General Requi
25、rements for the Competence of Testing and Calibration Laboratories (Copies of this document are available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, Case postale 56 CH-1211 Geneva 20, Switzerland or online at www.iso.org) 3 Provided by IHSNot for ResaleNo re
26、production or networking permitted without license from IHS-,-,-MIL-DTL-24688A TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY (TAPPI) TAPPI T 803 - Puncture Test of Container Board (Copies of this document are available from Technical Association of the Pulp and Paper Industry (TAPPI), 15 Tech
27、nology Parkway South, Norcross, GA 30092 or online at www.tappi.org.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this d
28、ocument, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. The materials furnished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified pro
29、ducts list (QPL) before contract award (see 4.2 and 6.3). 3.2 Materials. Materials shall be as specified in 3.2.1 through 3.3.2.6. 3.2.1 Type I (unfaced panel). The basic material shall be flexible, cellular, homogeneous polyimide foam. 3.2.2 Type II (faced type I panel). Type II, Classes 1 and 2 ma
30、terials shall be Type I foam with a fibrous glass cloth facing as specified in 3.2.4. Type II, Class 3 material shall be Type I foam faced with primer coated aluminized polyester/aluminum foil reinforced with a fibrous glass scrim as specified in 3.2.5. Type II, Class 4 material shall be Type I foam
31、 faced with primer coated aluminized polyester/aluminum foil reinforced with a fibrous glass scrim laminated to a lightweight fibrous glass cloth as specified in 3.2.5. Type II, Class 5 material shall be Type I foam faced with primer coated white polyester film reinforced with fibrous glass scrim as
32、 specified in 3.2.6. 3.2.3 Type III (preformed pipe) (flexible type I and rigid). Type III, Class 1 material shall be Type I flexible foam. Type III, Class 2 material shall be Type I flexible foam prelagged with fibrous glass cloth as specified in 3.2.4. Type III, Class 3 material shall be 1.5 lb/ft
33、 (maximum) rigid, cellular, homogeneous polyimide foam. Type III, Class 4 material shall be 1.5 lb/ft (maximum) rigid, cellular, homogeneous polyimide foam prelagged with fibrous glass cloth as specified in 3.2.4. Type III, Class 5 material shall be 3 lb/ft (maximum) rigid, cellular, homogeneous pol
34、yimide foam. Type III, Class 6 material shall be 3 lb/ft (maximum) rigid, cellular, homogeneous polyimide foam prelagged with fibrous glass cloth as specified in 3.2.4. 3.2.4 Fibrous glass cloth facing. Fibrous glass cloth facing shall conform to the requirements of Type I, Class 2 of MIL-C-20079, a
35、nd shall be free of wrinkles and other irregularities. Facing for Type II, Class 2 of this specification shall be perforated with nominal 316-inch diameter holes on -inch centers (see figure 1). 3.2.5 Aluminized polyester/aluminum foil facing with a primer coated surface. Aluminized polyester/alumin
36、um foil facing shall consist of -mil thick aluminized polyester film with primer coated surface laminated to a 1-mil thick aluminum foil backing. Type II, Class 3 material shall have a 4 yarns-per-inch by 3 yarns-per-inch (i.e., 4 x 3) fiberglass scrim adhered to the primer coated aluminized polyest
37、er/aluminum foil with a fire-retardant thermosetting adhesive meeting the fire requirements of MIL-A-3316. Type II, Class 4 material shall have fibrous glass cloth conforming to the requirements of Type I, Class 2 or Class 3 of MIL-C-20079 adhered with a fire-retardant thermosetting adhesive meeting
38、 the fire requirements of MIL-A-3316 to the primer coated aluminized polyester/aluminum foil reinforced with a fibrous glass scrim. 3.2.6 White polyester facing. White polyester facing shall consist of -mil thick white polyester film with primer coated surface laminated to a 4 x 3 fiberglass scrim.
39、The fiberglass scrim shall be adhered with a fire-retardant thermosetting adhesive meeting the fire requirements of MIL-A-3316. 3.2.7 Adhesive (type II, all classes and type III, classes 2, 4, and 6). Adhesive for bonding the fibrous glass cloth and the primer coated surface vapor resistant film to
40、Type II, all classes and Type III, Classes 2, 4, and 6 materials shall conform to Class 1, Grade A of MIL-A-3316, or to the fire resistance requirements of MIL-A-3316. Testing shall be as specified in 4.4.1. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
41、IHS-,-,-MIL-DTL-24688A 3.3 Construction. 3.3.1 Type II. Construction of Type II materials shall be in accordance with 3.3.1.1 through 3.3.1.5. 3.3.1.1 Class 1. The panel shall consist of a backing conforming to Type I unfaced foam, laminated with non-perforated fibrous glass cloth facing. 3.3.1.2 Cl
42、ass 2. The panel shall consist of a backing conforming to Type I unfaced foam. One face of the foam shall be slotted, 316 inch wide by 316 inch deep, on -inch centers, in one direction only. The perforated glass cloth facing shall be bonded to the slotted side of the foam, installed so that the perf
43、orations in the cloth facing are centered over the slots in the foam (see figure 1). 3.3.1.3 Class 3. The panel shall consist of a backing conforming to Type I unfaced foam, laminated with a fire-retardant adhesive meeting the fire requirements of MIL-A-3316, to a primer coated aluminized polyester/
44、aluminum foil reinforced with a fibrous glass scrim. 3.3.1.4 Class 4. The panel shall consist of a backing conforming to Type I unfaced foam, laminated with a fire-retardant adhesive meeting the fire requirements of MIL-A-3316, to a primer coated aluminized polyester/aluminum foil reinforced with a
45、fibrous glass scrim laminated to a lightweight fibrous glass cloth. 3.3.1.5 Class 5. The panel shall consist of a backing conforming to Type I unfaced foam, laminated with a fire-retardant adhesive meeting the fire requirements of MIL-A-3316, to a primer coated white polyester film reinforced with a
46、 fibrous glass scrim. 3.3.2 Type III. Construction of Type III (preformed pipe) materials shall be in accordance with 3.3.2.1 through 3.3.2.6. 3.3.2.1 Class 1. Class 1 material shall be Type I, flexible foam formed into pipe insulation. The insulation shall be split or slit lengthwise. 3.3.2.2 Class
47、 2. Class 2 material shall consist of foam conforming to Type I, flexible foam formed into pipe insulation, laminated with adhesive as specified in 3.2.7 and fibrous glass cloth facing conforming to the requirements of MIL-C-20079, Type I. 3.3.2.3 Class 3. Class 3 material shall consist of 1.5 lb/ft
48、(maximum) rigid foam formed into pipe insulation. The insulation shall be split or slit lengthwise. 3.3.2.4 Class 4. Class 4 material shall consist of foam conforming to Type III, Class 3, laminated with adhesive as specified in 3.2.7 and fibrous glass cloth facing conforming to the requirements of
49、MIL-C-20079, Type I. 3.3.2.5 Class 5. Class 5 material shall consist of 3 lb/ft (maximum) rigid foam formed into pipe insulation. The insulation shall be split or slit lengthwise. 3.3.2.6 Class 6. Class 6 material shall consist of foam conforming to Type III, Class 5, laminated with adhesive as specified in 3.2.7 and fibrous glass cloth facing conforming to the requirements of MIL-C-20079, Type I. 5 Provided by IHSNot for ResaleNo reproduction o
