1、I mMIL-PRF-26514G1995SUPERSEDINGMIL-P-26514F18 December 1987PERFORMANCE SPECIFICATIONPOLYURETHANE FOAM, RIGID OR FLEXIBLE, FOR PACKAGINGThis specification is approved for use by all Departmentsand Agencies of the Department of Defense.1. SCOPE1.1 -. This specification covers prefoamed polyurethanefo
2、ams, both rigid and flexible, for packaging applications.1.2 The polyurethane foams shall be furnishedin the following classes, categories, and grades. Additionalcharacteristics shall be specified by the procuring activity (see6.2).Type I - Standard FoamClass 1 - RigidClass 2 - FlexibleGrade A (Figu
3、reGrade B (FigureGrade C (FigureGrade D (Figure1)2)3)4)wpe II - Deleted (see 6.8)Beneficial comments (recommendations, additions, deletions)and any pertinent data which may be of use in improvingthis document should be addressed to the Air Force PackagingTechnology and Engineering Facility, AFMC LSO
4、/LOP, 5215 ThurlowStreet, Wright Patterson AFB OH 45433-5540, by using the self-addressed Standardization Document Improvement Proposal (DDForm 1426) appearing at the end of this document or by letter.AMSC N/A FSC 8135. Approved for public release;distribution is unlimited.Provided by IHSNot for Res
5、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26514GType III - Antistatic FoamClass 1 - RigidClass 2 - FlexibleGrade A (figure 1)Grade B (figure 2)Grade C (figure 3)Grade D (figure 4)2. APPLICABLE DOCUNENTS2.1 Geoecd The documents listed in this section are specifie
6、din sections 3 and 4 of this specification. This section does notinclude documents listed in other sections of this specificationor recommended for additional information or as examples. Whileevery effort has been made to ensure the completeness of thislist, document uses are cautioned that they mus
7、t meet allspecified requirements documents cited in sections 3 and 4 ofthis specification, whether or not they are listed.2.2.1 Soeciflcatlons. standards. and The followingspecifications and standards form a part of this document to theextent specified herein. Unless otherwise specified, the issuesO
8、f these documents are those listed in the issue of theDepartment of Defense Index of Specifications and Standards(DODISS) and supplement thereto, cited in the solicitation (see6.2).SPECIFICATIONSQQ-A-225/6 Aluminum Alloy 2024, Bar, Rod and Wire;Rolled, Drawn or Cold FinishedSTANDARDSFED-STD-101 Test
9、 Procedures for Packaging MaterialsFED-STD-595 Colors Used in Government Procurementa712Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.000MIL-PRF-26514G(Unless otherwise indicated, copies of the above specifications,standards and handbooks are ava
10、ilable from the StandardizationDocuments Order Desk, Building 4D, 700 Robbins Ave., PhiladelphiaPA 19111-5094. )2.3 -GOVP. ,. The following documents form apart of this document to the extent specified herein. Unlessotherwise specified, the issues of the documents which are DODadopted are those list
11、ed in the issue of the 130DISS cited in thesolicitation. Unless otherwise specified, the issues of docu-ments not listed in the DODISS are the issues of the documentscited in the solicitation (see 6.2) .ASTMD 1621 Standard Test Methods for CompressiveProperties of Rigid Cellular PlasticsD 1596 Stand
12、ard Test Method for Dynamic ShockCushioning Characteristics of Packaging MaterialD 2126 Standard Test Method for Response of RigidCellular Plastics to Thermal and Humid Aging(Application for copies should be addressed to ASTM, 1916 RaceStreet, Philadelphia PA 19103-1180. )IPC-MF-150 Metal Foil for P
13、rinted Wiring Applications(DOD adopted)(Application for copies should be addressed to the Institute forInterconnecting and Packaging Electronic Circuits, 7380 NorthLincoln Ave., Lincolnwood IL 60646-1797.)(Non-Government standards and other publications are normallyavailable from the organizations t
14、hat prepare or distribute thedocuments. These documents may also be available in or throughlibraries or other informational services. )2.3 . In the event of a conflict between thetext of this document and the references cited herein, the textof this document takes precedence. Nothing in this documen
15、t,however, supersedes applicable laws and regulations unless aspecific exemption has been obtained.3. REQUIREMENTS3.1 wt arw. When specified (see 6.2), a sample shall besubjected to first article inspection (see 6.3) in accordancewith 4.3.2.3Provided by IHSNot for ResaleNo reproduction or networking
16、 permitted without license from IHS-,-,-MIL-PRF-26514G3.2 The materials used in the production ofpolyurethane foams shall provide a product conforming to therequirements specified herein. Procurement of materials thatcontain chlorofluorocarbons (CFCS) ! or utilize or liberate CFCSduring their produc
17、tion, is prohibited. The polyurethane foamshall be supplied in rolls, sheets, or molded shapes, asspecified (see 6.2)3.3 Vtlc stab-. Unless otherwise specified (see 6.2and 6.5), all materials shall meet the requirements of 3.3.1 or3.3.2 as applicable.3.3.1 CIEi_l. After aging in accordance with 4.5.
18、3.1, theaverage minimum compressive strength of the 15 samples tested inboth the parallel and the perpendicular directions (see4.5.3.1.1) at yield or 10 percent deflection, whichever occursfirst, shall not vary more than 10 percent from the average valueof the 15 samples tested in both the parallel
19、and theperpendicular directions obtained prior to aging (compressivestrength samples, see 4.5.3.8 and 6.6). It is not necessary forboth yield and ten percent deflection to occur.3.3.2 . After aging in accordance with 4.5.3.1, thestresses necessary for 20 and 40 percent strains shall be within 10 per
20、cent of the stresses necessary to cause these samestrains on the same unaged specimens when tested in accordancewith 4.5.3.1.2.3.4 Iiater absoss 1 onlvl. The average waterabsorption by weight of all samples shall not exceed 170 percentwhen determined in accordance with 4.5.3.2.3.5 CreD (class onlv)
21、Unless otherwise specified (see 6.2),the maximum percentage creep that occurs under th-erequiredcontinuous loading stress shall not exceed 10 percent when testedin accordance with 4.5.3.3.3.6 Psslon set (class 2 only-) Unless otherwise specified(see 6.2), the compression set shall not be more than 1
22、0 percentof the original thickness (see 4.5.3.4)3.7 tv (class 2 onlv ) Unless otherwise specified (see6.2), the material shall show no cracks, tears, or separationswhen tested in accordance with 4.5.3.5. This requirement islimited to materials having a density of 64 kg/m or less.3.8.1 Molded Or mar.
23、 Special shapes (other thanrolls or sheets) shall be of the configuration and dimensions asspecified (see 6.2),.a71a71a714Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26514Go 3.8.2. The length, width, and thicknessshall be as specified by
24、the procuring activity (see 6.2) . Whenprocuring material, the tolerance for lengths, widths, andthicknesses shall be 3 nun.3.9 . The average change in volume of all of thepolyurethane foam samples after aging shall be no greater thanseven percent of the initial volumes before aging (see 4.5.3.6)3.1
25、0 lVP The polyurethane foam shall betested in accordance with 4.5;3.7. The flame front of each testspecimen shall not advance to or beyond the 125 nungage markspecified in the test. There shall be no visual evidence ofburning or melting of any specimen at or beyond the 125 mm gagemark.3.11 lve st .
26、Unless otherwisespecified (see 6.2), the minimum compressive strength at yield or10 percent deflection, whichever occurs first, shall be 140 kPawith the force applied parallel and 85 kPa with the force appliedperpendicular to the direction of foam rise (see 4.5.3.8 and6.6). It is not necessary for b
27、oth yield and ten percentdeflection to occur. Failure of the average compressive strengthvalue of any set of five specimens to conform to the aboverequirements shall be cause for rejection.3.12 nrotles (class 2 The peak G-0static stress curves for grades A, B, C, and D shall conform tothe shapes of
28、the appropriate generalized curves presented infigures 1, 2, 3, and 4, respectively, within the specifiedtolerance bands, of A 20 percent, when tested in accordance with4.5.3.9. Five G-static stress points, approximately eqUallYspaced, shall be required to establish conformance. IWOpointsshall be es
29、tablished within 10 percent of the static stressvalues at the extremities of the curve and one at the approximateminimum peak acceleration level point.3.13 rtv (tvne The cushioningmaterial shall be uniformly impregnated with an anti-staticagent . The static decay rate of the impregnated foam shall n
30、otexceed two seconds when tested as specified in 4.5.3.10.3.14 Unless otherwise specified(see 6.2 and 6.7), cushioning material grade and anti-staticproperties shall be identified according to color. Coding colorsshall correspond to color numbers of FED-STD-595. The colorsshall be evenly dispersed t
31、hroughout the material. The material,grade, color, and color code number shall be:5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26514Gpe I, Class 2 - Standard FoamFED-STD-595 NO.A Blue 35550B Green 34672c Charcoal 36118Type III, Class 2 -
32、Anti-Static FoamNo.A Yellow 23655B Red 31302c Brown 301173.15 COrrosil ,i ,. Anti-static cushioning material (type III)shall not cause corrosion when tested as specified in 4.5.3.11.4. VERIFICATION4.1 of Insoectlons. The inspection requirementsspecified herein shall be classified as follows:a. First
33、 article inspection (4.3.2)b. Conformance inspection (4.3.3)4.2 Guidance for sampling procedures is provided in6.4. For purposes of sampling, a lot shall consist of allmaterial produced under like conditions in one unchanged processby one manufacturer and submitted for acceptance at one time.4.3 nd
34、tests.4.3.1 First article waver. First article inspection may bewaived, by the Air Force Packaging Technology and EngineeringFacility (AFPTEF) or the procuring activity, when the procuringactivity or contract administrator has data or other evidence toindicate that prior successful first article ins
35、pection has beenconducted (see 6.2) . Only when the first article has been waivedby the AFPTEF or procuring activity, may the contractor self-certify that the material will conform to the requirements ofthis specification.4.3.2 -t art. First article inspection shallconsist of all tests in Table I an
36、d shall be performed by theAFPTEF, after award of contract and prior to production. Firstarticle inspection shall be performed on sample units producedusing materials, equipment, and procedures which will be used infulfilling the contract. First article approval is valid only onthe contract on which
37、 it is granted, unless extended by theGovernment to other contracts (see 3.1, 6.3, and 6.9).6,.a71a71Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-o00 ,Lp”,2dl L411Amum.1 (pm“,d!,.*m*ru”c9.9u”l.w,711w1II.(VSIC Cl,t V/NIrcr CrnWN 01(Ill 01(,qpd6( 11
38、( 11( uZli-,1lw1,1st4YINVIN WN VIN=fz=-mta-col1 w m WNWN v7Nt-sl,-0!1.=-0$1cWNv15?JJw41In-v(*ctZc=4lsnlvmo32.sMJWmnomProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26514G4.3.3 Quality conformance tests shallconsist of all tests in table II.T
39、ABLE II. e Test Re.PROPERTIES TEST METHODExamination of Dimensions 4.5.1.1Thickness 4.5.1.2Combustibility 4.5.3.7Color Coding (type III, class 2 only) 4.4tl-Static (tvDe 111. rlass 2 O!llv) 4.5.3.1 04.4 ection Item shall be inspected for defectslisted in table III.TABLE III. of defecPERPENC. ICULAR.
40、2/J 50 mm 100 n“ Direction of/foal-l r-;eFICORE 5. Example of orientationof foamsamples.26Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-0 MIL-PRF-2651dGIFIGURE 6.D- - “Relative Dositlons of burner win= top, apaclmen, andapeclmen .9UPP Ort .ABLUEET
41、10.- Tm=3s m.,/ IilRE.”k y. =*Y Q aFvzsIBLEFIArQ40- mmm=.ellRNERwmG loIYQ .-FICURE 7. Rolatlvo positlonn of burner wing top, flame, a75pecimen,and specimen a.pport.27I oProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-26514GFIGURE8. Apparatus
42、for supportofspecimen.28.,a71Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. . .000Custodians:Army - GLNavy - ASAir Force - 69MIL-PRF-26514GReview activities:Army - AR, AT, AVNavy - EC, MC, OS, SH, SA, YOAir Force - 99, 71, 80, 84Other Activities:A
43、IANOPANSIA29Preparing Activity:Air Force - 69(Project 8135-0680)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-o00STANDARDIZATION DOCUMENT IMPROVEMENT PROPOSAL1. The preparingaetiviiy must mmplele bbska 1.2, 3, ard 8. In blink 1. bolh the dowmenl nu
44、mber and revision Ienerahwld be gtien.2. The aubminerof this form must somplete blosks4, 5.6. and 7.3. The preparingaeliviiy MUSIprovide a reply wkhin30 daya from receirnof Ihe form.NOTE: This form ma nm be used to rq.m copiesotdowfnems.w 10wfM was.orClarifWofwvir-smcurremmmrasls. memswbmmtio”ls tor
45、mtitimmlmeor NTIPIYamk=ab”towawea.ywn”of Ihere!erenseddewmem(s) or 10amend mn!rastiual raquiremema.I REWMMEND A CHANGE: “ uwMfl;F.265 ,G Z 00CUMENTDATE(WMMIX995Aw? 01-w nnEolyurelhanc Foam.Rigidorflexible, For PackagingNANREoFCHANGE (knwpiwqP mM!L=dnSid9 PTPC8WmW?IT.8L=WW AI?WI.-5WWUIWR=VR- FOR RECO
46、MMENDATIONSW!WT7enru (su Mtmkltd) Limuammm7Riiwel%xb%.*mLw :i,EEw (l17adBb -) 7. OA1aWsuTssofWsWsto)(2)AlnWottm) ,.PREPAMSACIACllVITYNM& b. TELEPHONE (- Ann W)(1) cc.mwwl (EjAUTOWAir Force Packaging Technology and6 vw w t107RHXVS AREPLV!MTMNU o. SOAm wJ/u)P Ddansn OUa!ly end standardization Otlice5215lhurlowSt 520SLeasbuPike.SUI!O140S.FallsChu VA 220A1-SASSWPAFBOH 45433-5540 %7Tobphona 7 ) 756-23AO AUTOVON28%2W0 . - - . . . . . . .“Ill FOMS 1426, OCT 89 (tP) Yravmusewrmnsareoosomr.x ,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
