1、MIL-PRF-20696F2 September 1997SUPERSEDINGMIL-C-20696E1 June 1987PERFORMANCE SPECIFICATIONCLOTH, WATERPROOF, WEATHER RESISTANTThis specification is approved for use by all Departments and Agencies of the Department ofDefense.1.1 Scope. This specification covers the requirements for four types and fou
2、r classes ofweather resistant, waterproof cloth.1.2 Classification. (see 6.2):Type I - Cloth, Moderate strength, dimensionally stableType II - Cloth, High strength, dimensionally stableType III - Cloth, Ultra High strength, dimensionally stableType IV - Cloth, High strengthClass 1 - Extreme cold tem
3、perature flexibilityClass 2 - Cold temperature flexibility, flame retardantClass 3 - Extreme cold temperature flexibility, flame resistantClass 5 - Extreme temperature resistance2. APPLICABLE DOCUMENTS2.1 General. The documents listed in this section are specified in sections 4 and 5 of thisstandard
4、. This section does not include documents cited in other sections of this standard orrecommended for additional information or as examples. While every effort has been madeto ensure the completeness of this list, document users are cautioned that they must meet allspecified requirements documents ci
5、ted in sections 4 and 5 of this standard, whether or notthey are listed.Beneficial comments, (recommendations, additions, deletions, clarifications) and anypertinent data which may be of use in improving this document should be sent to:Defense Personnel Support Center, Clothing and Textiles Director
6、ate, Attn: DPSC-FNS,2800 South 20th Street, Philadelphia, PA 19145-5099 by using the StandardizationDocument Improvement Proposal (DD Form 1426) appearing at the end of thisdocument or by letter.AMSC N/A FSC 8305DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.INCH-PO
7、UNDProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-20696F22.2 Government documents.2.2.1 Specifications, standards, and handbooks. The following specifications, standards, andhandbooks form a part of this document to the extent specified here
8、in. Unless otherwisespecified, the issue of these documents are those listed in the issue of the Department ofDefense Index of Specifications and Standards (DODISS) and supplement thereto, cited in thesolicitation (see 6.2).STANDARDSFEDERALFED-STD-191 - Textile Test MethodsFED-STD-595 - Colors Used
9、In Government ProcurementDEPARTMENT OF DEFENSEMIL-STD-1487 - Glossary of Cloth Coating Imperfections(Unless otherwise indicated. copies of federal and military specifications, standards, andhandbooks are available from the Standardization Documents Order Desk. Bldg. 4D, 700Robbins Avenue, Philadelph
10、ia, PA 19111-5094.)2.2.2 Other Government documents, drawings, and publications. The following otherGovernment documents, drawings, and publications form a part of this document to the extentspecified herein. Unless otherwise specified, the issues are those cited in the solicitation.FEDERAL TRADE CO
11、MMISSIONRules and Regulations Under-the Textile Fiber Products Identification Act(Copies are available from the Federal Trade Commission, Pennsylvania Avenue at SixthStreet, N.W., Washington, DC 20580-0001.)2.3 Non-Government publications. The following documents form a part of this document tothe e
12、xtent specified herein. Unless otherwise specified, the issues of the documents which areDOD adopted are those listed in the issue of the DODISS specified in the solicitation. Unlessotherwise specified, the issues of documents not listed in the DODISS are the issues of thedocuments cited in the soli
13、citation (see 6.2).AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)(Applications for copies of referenced documents should be addressed to the AmericanSociety for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19426-2959.)CODE OF FEDERAL REGULATIONS(Applications for copies of r
14、eferenced documents should be addressed to U. S.Government Printing Office, Superintendent of Documents, Mail Stop: SSOP, Washington,DC 20402-9328.)Contact Allergy: Predictive Testing in Humans“, Advances in Modern ToxicologyProvided by IHSNot for ResaleNo reproduction or networking permitted withou
15、t license from IHS-,-,-MIL-PRF-20696F3(Applications for copies of referenced documents should be addressed to U. S. ArmyCenter for Health Promotion and Preventative Medicine, ATTN: MCHB-DC-TTE, Bldg. E-2100, Aberdeen Proving Grounds, MD 21010-5442.)TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTR
16、Y (TAPPI)(Applications for copies of referenced documents should be addressed to TAPPI Press,Technology Park/Atlanta, P.O. Box 105113, Atlanta, GA 30348-5113.)SOCIETY OF AUTOMOTIVE ENGINEERS (SAE)SAE J 1966 - Lubricating Oil, Aircraft Piston Engine (Nondispersant Mineral Oil), Standard(Applications
17、for copies of referenced documents should be addressed to the Society ofAutomotive Engineers, Publications Division, 400 Commonwealth Drive, Warrendale, PA15096-0001.)2.4 Order of precedence. In the event of a conflict between the text of this document and thereferences cited herein, the text of thi
18、s document takes precedence. Nothing in this document,however, supersedes applicable laws and regulations unless a specific exemption has beenobtained.3. REQUIREMENTS3.1 First article. When specified (see 6.2), a sample shall be subjected to first articleinspection, in accordance with 4.3.3.2 Standa
19、rd sample. The cloth shall match the standard sample for shade and appearanceand shall be equal to or better than the sample for colorfastness (see 6.3).3.3 Materials.3.3.1 Dusting powder. If dusting powder is used on the cloth, it shall be whiting, talc, orother finely divided mineralmaterial that
20、does not support mildew growth. Talc shall notcontain asbestos and whiting shall contain less than 1% quartz. Only the minimum amount ofdusting powder necessary to prevent blocking should be applied.3.4 Performance requirements. The cloth shall conform to the requirements specified inTable I and 3.4
21、 through 3.7. The cloth shall be compatible with state of the art seam sealingmaterials and technology. The cloth may be dusted on both sides with the dusting powderspecified in 3.3.1 to prevent blocking. If dusting powder is used, the side(s) of the clothcontaining the dusting powder shall show not
22、 less than “good“ resistance to dry crocking.3.4.1 Color. The color of the cloth shall match the applicable color number of FED-STD-595or shall match the approved color standard for the color specified where such a standard isapplicable (see 6.2 and 6.3).3.4.2 Toxicity. The cloth shall not be toxic
23、to the skin, eyes or epidermis when used asintended (see 4.4.13).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-20696F43.4.3 Mildew resistance. The Class 2 cloth shall be mildew resistant. If plastizers are usedthey should be restricted to p
24、hospate or pthalate esters for the purpose of providing mildewresistance (see 4.4.14).3.5 Back side identification. The back side of the cloth shall be identified by applying astamping on that side of the cloth with the word “Back“ at the beginning and end of each roll.The marking shall not show thr
25、ough onto the face side of the cloth.3.6 Fiber identification. Each roll shall be labeled and ticketed for fiber content inaccordance with the Rules and Regulations Under the Textile Fiber Products IdentificationAct.3.7 Physical requirements. The finished cloth shall conform to the requirements list
26、ed inTable I.Table I. RequirementsType I Type II class 2 - 150 hours for all colors.Types I, II and IV; classes 1 and 3 - 150 hours for olive green and black only, all othercolors - 50 hours.Type III, class 5 - 150 hours for all colors.After exposure, the specimens shall be removed and allowed to co
27、ndition for at least 24hours.NOTE: Equipment which operates at one revolution in two hours. may be used. However,the one revolution per minute shall be the standard procedure in the event of dispute.Laboratory reports shall state the procedure used.4.4.3 Stiffness4.4.3.1. TAPPI Method T-451, Preferr
28、ed Procedure (1).4.4.3.2 The stiffness test shall be conducted as specified in 4.4.3.1 except that the apparatusand test specimens shall be conditioned at the specified temperature for a minimum of 4hours before testing and the test shall be performed in a still atmosphere at that temperature.4.4.4
29、Adhesion of coating. ASTM-D-751, Adhesion of Coating with 2 inch wide reinforcedcoating adhesion specimens, cyanoacrylate (solventless) adhesive, and pulling clamp speed of5 mm/s. The test shall be performed on the coated side (if one side coated) or face to back (iftwo sides coated) of the cloth. T
30、esting shall be performed in the warp direction.4.4.5 Blocking. ASTM D-751, Determination of Blocking Resistance of Fabrics Coated withRubber or Plastics at Elevated Temperatures, except that the specimens shall be exposed at anoven temperature of 180F + 2F for 30 minutes.4.4.6 Hydrostatic resistanc
31、e.4.4.6.1 ASTM D-751, Hydrostatic Resistance Procedure B (Pressure Application by a RisingColumn of Water), Procedure 2 with the hydrostatic head fixed at 50 centimeters and appliedto the test specimen for 10 minutes. The back side of the cloth shall contact the water. Thereport shall only include “
32、measurement of the appearance of water drops“. Leakage of anyspecimen shall be considered a test failure. Leakage is defined as the appearance of water atthree or more different places within the 4-1/2 inch diameter test area.4.4.6.2 A new specimen, 10 by 10 inches, shall be abraded by means of a 2-
33、inch square pieceof grade 1/0 garnet paper which shall be uniformly loaded with an 8.0 + 0.1 ounce weight.The specimen shall be abraded on the face by moving the weighted garnet paper filling-wisefive times in each direction. The specimen shall then be turned over and abraded on the backby moving th
34、e weighted garnet paper warp-wise five times in each direction. The abraded 2-inch square area shall then be placed face up across the center line of the clamping head sothat the center of the abraded area will coincide with the center of the exposed part of thespecimen. Hydrostatic resistance shall
35、 then be determined as specified in 4.4.6.1.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-20696F94.4.7 Oil resistance. One 8 by 8 inch specimen shall be placed on a wood frame. The insidedimensions of the frame shall be 6 inches by 6 inches
36、 by 1 inch. The specimen shall beforced into the frame by a wood block 5-3/4 by 5-3/4 inches (with round corner) to form abasin of uniform depth. The edges of the cloth shall be tacked to the frame and the blockremoved. Lubricating oil, conforming to Grade 50 of SAE J 1966 shall be rapidly poured in
37、tothe basin to a 1/2 inch depth. After the oil has been in the basin for 1 hour, the bottom of thefabric specimen forming the basin shall be examined to determine if oil has seeped through orpermeated the cloth.4.4.8 Resistance to aromatic hydrocarbon fluid. One, 1 by 6 inch specimen with the longdi
38、mension parallel to the warp shall be immersed for 5 minutes in aromatic hydrocarbon fluidconforming to Reference fuel D of ASTM D 471. The specimen shall be dried at roomtemperature for 2 hours (+ 5 minutes) and then be creased sharply on itself, with the face sidetoward the outside of the fold. A
39、similar specimen, except with the long dimension parallel tothe filling shall be tested in the same manner.4.4.9 Resistance to accelerated weathering. The cloth shall be subjected to the acceleratedweathering procedure specified in 4.4.2. After completion of the procedure, each specimenshall be fold
40、ed by hand, face out, sharply upon itself and visually examined along the fold forcracking and crazing. Each specimen shall then be opened flat and examined for blooming,chalking or appreciable color change (An appreciable color change is one that is noticeableon first glance when comparing the test
41、ed specimen with the original unexposed cloth).4.4.10 Resistance to low temperature. A 1 by 4 inch specimen of the cloth with the longdimension warpwise and a 1 by 4 inch specimen of the cloth with the long dimensionfillingwise shall be exposed for 4 hours at a temperature of minus 70 + 5oF with the
42、temperature recorded at the lowest point in the chamber. The sample, still in the testatmosphere, shall then be bent sharply, face side of the cloth to the outside of the fold, 180degrees over a 1/8 inch steel rod that has been exposed in the test chamber with the testspecimen.4.4.11 Resistance to h
43、igh temperature. A 2 by 6 inch specimen of the cloth shall be exposedfor a period of 6 hours in an electrically heated oven maintained at a temperature of 170o +2oF. At the end of the exposure period, the specimen shall, while still maintained at the testtemperature, be bent 180 degrees over a 1/8 i
44、nch steel rod with the face side of the cloth to theoutside of the fold.4.4.12 Matching. The color and shade shall match the standard sample when viewed underfiltered tungsten lamps that approximate artificial daylight and that have a correlated colortemperature of 7500 + 200oK, with illumination of
45、 100 + 20 foot candles, and shall be a goodmatch to the standard sample under incandescent lamplight at 2300 + 200oK.4.4.13 Toxicity assessment. The waterproof cloth shall be tested for toxicity as follows:a) Title 40, Code of Federal Regulations, 1994 Edition;Section 798.4100- Dermal SensitizationS
46、ection 798.4470- Primary Dermal IrritationSection 798.4500- Primary Eye IrritationMarzulli, F. & H. Maibach, “Contact Allergy: Predictive Testing in Humans“,Advances in Modern Toxicology, Volume 4, pp 353-372, 1977.Provided by IHSNot for ResaleNo reproduction or networking permitted without license
47、from IHS-,-,-MIL-PRF-20696F10b) As an alternative to animal and human testing, the contractor may provide informationwhich certifies that the finished product was composed of chemicals or materialswhich have been safely used commercially where prolonged skin contact has occurred.4.4.14 Mildew resist
48、ance. A certificate of compliance shall be submitted for thisrequirement.5. PACKAGING5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified inthe contract or order (see 6.2). When actual packaging of materiel is to be performed by DoDpersonnel, these personnel need
49、 to contact the responsible packaging activity to ascertainrequisite packaging requirements. Packaging requirements are maintained by the InventoryControl Points packaging activity within the Military Department or Defense Agency, orwithin the Military Departments System Command. Packaging data retrieval is availablefrom the managing Military Departments or Defense Agencys automated packaging files,CD-ROM products, or by contacting the responsible packaging activity.6. NOTES(This sect
