NAVY MIL-P-21929 C-1991 PLASTIC MATERIAL CELLULAR POLYURETHANE FOAM-IN-PLACE RIGID (2 POUNDS PER CUBIC FOOT)《(2磅每立方英尺)硬的现场发泡的聚氨基甲酸酯塑料》.pdf

《NAVY MIL-P-21929 C-1991 PLASTIC MATERIAL CELLULAR POLYURETHANE FOAM-IN-PLACE RIGID (2 POUNDS PER CUBIC FOOT)《(2磅每立方英尺)硬的现场发泡的聚氨基甲酸酯塑料》.pdf》由会员分享，可在线阅读，更多相关《NAVY MIL-P-21929 C-1991 PLASTIC MATERIAL CELLULAR POLYURETHANE FOAM-IN-PLACE RIGID (2 POUNDS PER CUBIC FOOT)《(2磅每立方英尺)硬的现场发泡的聚氨基甲酸酯塑料》.pdf（21页珍藏版）》请在麦多课文档分享上搜索。

1、I 1INCH-POUNDMIL-P-21929C15 January 1991SUPERSEDINGMIL-P-21929B11 August 1%9MILITARY SPEC1FICATION1LASNC MATERIAL CliLLULJ4R I01.YURETIIATW?. FOAM-IN-PLACI$ RIGID(2 1OUNDS PER CUBIC FOOT)This specification is npproved f“r use by all departments and agencies ofthe Depmlrnent of Defense.1. SCOPE1.1 Sc

2、ope. This spr.xilicat ion covers only one class of foam, nominal density 2.0 pounds percubic foot (lb/ft3), rigid unicellular polyurethane foam, and the materials required for preparationby the foam-in-place technique.2. APPLICABLE DOCUMENTS2.1 Government documents.2.1.1 Specifications and standards

3、. TIM following specifications and standards form a part ofthis document to the extent specified herein. Unless otherwise specified, the issues of thesedocumcnk arc those listed in the iswe of the Department of Defense Index of Specifkations andStandards (DODISS) and supplement thereto, cited in the

4、 solicitation (see 6.2).I 1Bencfici:ll comments (recommendaiort% additions, deletions) and any pertinent data which may be of use inimprming this dccument should be addressed to: Commander, Naval Sea Systems Command, SEA 55Z3, Depart-ment of the Navy, Washington, DC 20362-5101 by using the self-addr

5、essed Standardization Document lmprove-men! Proposal (DD Form 1426) appearing at the end of this document or by letter.1 I.AMSC N/A Fsc 9330DISTRII1UTION STATEMENT A. Approved for public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without l

6、icense from IHS-,-,-MI L-P-21929CCans, Metal, 28 Gage and LighlerDrums, Shipping and Storage, Steel, 55-Gallon (208 Liters)Pails, Metal: (Shipping, Steel, 1 Through 12 Galions)Enamel, Semigloss, Rust-InhibitingSPECIFICATIONSFEDERALPPP-C-96PPP-D-729PPP-P-704TT-E-485STANDARDSFEDERALFED-STD-313 Materia

7、l Safety Data, Transportation Data and Disposal Data forHazardous Materials Furnished to Government ActivitiesMILITARYMIMTD-105 Sampling Procedures and Tables for Inspection by AttributesMIL-STD-129 Marking for Shipment and StorageMIL-STD-147 Palletized Unit Loads(Unless othewise indicatcci, copies

8、of federal and military specifications and standard are availablefrom the Standardization Doeumens Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia,PA 191 11-5094.)2.1.2 Other Government publication. The following other Government publication forms apart of this doeumcnt to the extent speci

9、fied herein. Unless otherwise specified, the issues arethose cited in the solicitation.DEPARTMENT OF T.IWNSPORTATION (DOT)Code of Federal Regulations Hazard Communication StandardTitle 29, Part 1910.1200(The code of Federal Regulations (CFR) and the Federal Register (FR) are for sale on asubscriptio

10、n basis by the Superintendent of Documents, U.S. Government Printing Office,Washington, DC 20402. When indicated, reprints of certain regulations may be obtained from theFederal agency responsible for issuance thereof.)2.2 Non-Government publications. The following documents form a part of this docu

11、mentto the extent specified herein. Unless otherwise specified, the issues of the documents which areDOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unlessotherwise sxcified, the issues ofdocuments cited in the solicitationdocuments no listed in the DODISS arc the

12、issues of the(see 6.2).2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-21Y29CAMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)D 471 Standard Test Method for Rubber Property Effect of Liquids;(DOD adopted)D 1621 Standard Test Method for Compres

13、sive Properties of Rigid CellularPlastics; (DOD adopted)D 1622 Standard Test Mcthoci for Apparcn Density of Rigid CellularPlastics; (DOD adopted)D 2126 Standard Test Method for Response of Rigid Cellular Plastim toThermal and Humid Aging; (DOD adopled)D 2341 Standard Specification for Rigid Urethane

14、 FoamD 2842 Standard Test Method for Water Absorption of Rigid CellularPlasticsD 2856 Standard Test Method for Open Cell Content of Rigid CellularPlastics by the Air Pycnometer; (DOD adopted)E84 Standard Test Method for Surface Burning Characteristics ofBuilding Materials; (DOD adopted)(Application

15、for copies should be addressed to the Arncrican Society for Testing and Materials,1916 Race Street, Philadelphia, PA 19103.)NATIONAI. MOTOR FREIGHT TRAFFIC ASSOCIATION, INC., AGENTNational Motor Freight Classificaicm(Application for copies should be addressed to the National Motor Freight Traffic As

16、sociation,Inc., ATA TR4FFIC Dept., 2200 Mill Road, Alexandria, VA 22314.)UNIFORM CLASSIFICATION COMMITTEE AGENTUniform Freight Classification Ratings, Rules and Regulations(Application for copies should be addressed to the Uniform Classification Committee Agent, TariffPublication Officer, Room 1106,

17、 222 South Riverside Plaza, Chicago, IL 60606.).3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-21929C(Non-Govcrnmen tstandard sandothc rpublicationsare normally available from the organizationsthat prepare or distribute the documents. These d

18、ocuments also may be available in or throughlibraries or other informational services. )23 Order of precedence. in the event of a conflict between the text of this document andthe rcfcrenees cited herein, the text of this doeumcn takes precedence. Nothing in this document,however, supersedes applica

19、ble laws and regulations unless a specific exemption has been obtained.3. REQUIREMENTS3.1 First m-tick. When specified (SCC 6.2), a sample shall be subjcctcd to first articleinspection (see 6.5) in accordance with 4.3.3.2 Materials. The contractor shall select the materials used for producing the po

20、lyurethanefoam specified herein. Unless othcwise specified (see 6.2), the foam shall be prepared by mixingnot more than two materials, and not more than one material shall contain isocyanate groups.When specified (see 6.2 and 6.4.2), the cured foam shall not liberate halogen containing substancesint

21、o the atmosphere.3.2.1 Material safety data sheet (MSDS). The contracting activity shall be provided a materialsafety data sheet (MSDS) at the time of the contract award, The MSDS shall be provided inaccordance with the requirements of FED-STD-313 and 29 CFR 1910.1200, HazardCommunication Standard.

22、When FED-STD-313 is at variance with the CFR, 29 CFR 1910.1200shall take pree.edenc-e. FED-STD-313 shall bc modified and supplemented accordingly. The MSDSshall be included with each shipment of the material covered by this specification (see 6.6).3.3 Physiesd properties of cured foam. The physical

23、properties of the cured foam shall be asspecified in table I when tested.3.4 Color. The color shall be the natural color of the product-3.5 Odor. The cured foam shall be free of any objectionable odor.3.6 Homogeneity of fonm. The cured foam shall be free of non-foamed or soft, taclq particles.The fo

24、am shall be composed of small CCIISof approximately the same size.3.6.1 Blow holes. Blow holes shall be not larger than 1/2 inch, largest dimension, and notmore than one blow hole shall occur in any projected area of 6 by 6 inches (see 4.6.2). Not morethan three blow holes shall be in three adjacent

25、 l-inch thick layers of the cut sample block (see4.6.2.1). Frothed-in-place foam shall not exhibit blow holes larger than 1,0 inch, largest dimension.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-21929C3.7 Storage life. Aftertcmpcraturcs not

26、higher thanstorig in original containers for not less than 6 months at75-2 degre= Fahreneit (“F) ( degrees Celsius (“C) and aftercuring, the materials used to produce the foam shall conform to the requirements of thisspecification.TABLE 1. Physicnl properties.Properly Requirement TesDensily (lb/ft3)

27、 2.0 z IJ.s 4.6.1Compressive strength at 10 percent deformation 20 4.6.4parallel to foam rise (pounds per squareinch (lb/in2),minimum)Volume change after heat aging (perccn of original,maximum)Expansion 5 4.6.5Shrinkage No chrrnge 4.6SDistortion or other visible change No change 4.6.5Humidity agingV

28、olume change (pcrcenI of originsl) Plus 12, minus 5 4.6.6Compreswe Slrenglh change (percent 01 Original, 20 4.6.6maximum)Compression set (percent, maximum) 3.s 4.6.7Water absorption (pounck per square foot (lb/ft2) of 0.12 4.6.8cut surfidcc, maximum)Unicclluktrily (percent open celfs, maximum) 15 4.

29、6.9Oil resistance No softening or visible 4.6.10changef%e resistance (when specified, see 6.2): hire test (seeFfame spread maximum 1 4.6. 12) Watt beSmoke developed maimum 250 performedSPccimcn thickness 1 inch (nominal) before and afterNo melting, dripping, or exposure toflaming droplets humidity a

30、gingtest (see 4.6.6)Not 10 be construed as a fire hamrd classification - refers to cst method only.5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIIL-P-21929C3.8 Mentifieation markings. Each container for the materials shall be permanently Iabelcd

31、 inaccordance with FED-STD-313 and shall bc marked with the fol)owing information:a.b.c.de.f.identification ofisocyanate containing materialManufacturers batch number, date of manufacture, and date of expirationWeight and volume of material in container and volume of foam produced when weightindicat

32、ed on each of the containers of materials required for foaming is used as specifiedin 3.9 (see 6.2)Recommended storage conditionsPrecautionary markings.3.9 Instructions for use. Instructions for use shall be included with each shipment of foammaterials. Unless othewise specified (see 6.2 and 6.4.1),

33、 the instructions shall provide the followinginformation:a. Materials:(1) Manufacturers designation or code for each material required to prepare the foam(2) Recommended storage conditions and maximum usable storage life.b. Preparation of the foam:(1) Recommended ratio in parts by weight of the mate

34、rials required for preparing thefoam(2) Method of preparation of materials for addition to the foaming mixture, such asstirring, cooling, preheating, or melting(3) Recommcndcd type of mechanical mixing equipment and feeding rate of materials6Provided by IHSNot for ResaleNo reproduction or networking

35、 permitted without license from IHS-,-,-(4)(5)(6)(7)(8)(9)MIL-P-21929CRecommended temperature for mixing materials and temperature of mold or cavityto be filledRccommcndcd cleaning procedure of the test mold prior to usc and the mold orcavity to be filledInstructions for foam preparation in closed,

36、completely open, or partially open moldsor cavities, and for vertical and horizontal direction of foamingRecommended waiting period between successive poursRecommended curing temperatures and timesClean-up procedures for equipment.c. Safety precautions for handling materials and fabrication of foam

37、(see 4.5.21)d. Additional information which may be necessary or desirable, such as foamingcharacteristics and instructions for preparing the foam sample using hand mixing (see4.5.2).3.10 Toxicity. The materials shall have no adverse effect on the health of personnel whenused for its intended purpose

38、. Questions pertinent to this effect shall hc referred by the contractingactivity to the Naval Medical Command (NAVMEDCOM) who will act as an advisor to thecontracting agency.3.11 Worknmnship. The materials shall bc homogeneous and free from contaminants andforeign materials. Solid materials shall b

39、e free from lumps or coarse particles.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for inspection. Unless otherwise specified in the contractor purchase order,the contractor is responsible for the performance of all inspection requirements (examination andtests) as specified herein. Except as o

40、therwise specified in the contract or purchase order, thecontractor may use his own or any other facilities suitable for the performance of the inspectionrequirements specified herein, unless disapproved by the Government. The Government resetvesthe right to perform any of the inspections set forth

41、in the specification where such inspections aredeemed necessary to ensure supplies and semices conform to prescribed requirements.4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and5. The inspection set forth in this specification shall become a part of the c

42、ontracts overallinspection .-system or quality program. The absence of any inspection requirements in thespecification shall not relieve the contractor of the responsibility of ensuring that all products or7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS

43、-,-,-MIL-P-21929Csupplies submitted to the Government for acceptance comply with all requirements of the contract.Sampling inspection, as part of the manufacuIing Operations, is an acceptable practice to ascertainconformance to requirements, however, this does not authorize submission of known defec

44、tivematcriai, cihcr indicated or actual, nor does it commit the Government to accept defectivematerial.4.2 Cksificatimt of inspections. The inspec!icm requirements specified herein are classifiedas follows:a. First articie inspection (see 4.3)b. Quality conformance inspection (see 4.4).4.3 First art

45、icle inspection. Firstarticie inspection shaii consist of the examinations and testsas specified in 4.4.3, 4.4.4, and 4.6.4S.1 First article samples. The firstarticle sample of the materials ruired for productionof the foam shall be sufficient for not less than three sample blocks (see 4.5.2). Two s

46、ample blocksshall be furnished to the contracting activity. When conditions for the use of materiais whichdeviate from those covered by the instruction sheet are specified (see 6.2), first articie samples ofthe foam shall be prepared at the lower and higher temperature extremes of the specifiedtempe

47、rature range for the materiais, mold, and cure, as applicable. Uniess othexwise specified (see6.2), acceptance of the first article samples shall not depend on completion of the storage life test(see 4.6.1 1). Production shall not be conducted without prior contracting activity approval.4.4 Quality

48、conformance inspection. Quality conformance inspection shall consistof theexaminations specified in 4.4.3.1, 4.4.3.2, and 4.4.4.1, and the tests specified in 4.6.1, 4.6.4, 4.6.7,4.6.8, 4.6.9, and 4.6.12 (see 6.3).4.4.1 Lot. For quality conformance inspection, a lot shall consist of all materials in

49、the ratiosrequired for preparation of the foam and offered for delivery at one time (see 6.3).4.4.2 Sampling.4.4.2.1 Sampling for exnminntion of mnterials. Unless otheruke specified (see 6.2), samplingfor examination of materials shall be in accordrmce with table II.4.4.2.2 Sampling for examination nnd test of cured foam. The sample for examination and testof the cured foam shall be one sample block prepared in