欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    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

    • 资源ID:980641       资源大小:765.24KB        全文页数:21页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    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

    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


    注意事项

    本文(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)为本站会员(arrownail386)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开