1、 MIL-C-21852F 83 W 9979906 0383151 O - MILITARY SPECIFICATION I INCH-POUNDS I MIL-C-21852F 6 February 1989 SUPERSEDING 25 August 1981 MIL-C-21852E CLOTH, TAFFETA, NYLON This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope, This speci
2、fication covers the requirements or a nylon taffeta cloth suitable both as a base fabric without coating or for coating with chloroprene rubber or other type coatings. * 1.2 Classification. The cloth shall be of the following types as specified (see 6.2): Type 1 - 1.2 oz/yd: (4ig/m:) Type II - 1.5 o
3、z/yd2 (51g/m2) Type III - 2.0 oz/yd (68g/m ) - Water repfllent tgeated Class 1 - Plain finish Class 2 Type IV - 1.9 oz/yd (64g/m ) Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Officer in Char
4、ge, Navy Clothing and Textile Research Facility, 21 Strathmore Road, Natick, MA 01760-2490 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 8305 DISTRIBUTION STATEMENT A. Approved for public rele
5、ase, distribution is unlimited. - , THIS DOCUMENT CONTAINS 15 PAGES; Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - MIL-C-23852F 83 7779906 0383352 2 m MIL-C-21852F * 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standar
6、ds, 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 shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODIS
7、S) and supplement thereto, cited in the solicitation. SPECIFICATIONS FEDERAL V-T-295 - Thread, Nylon PPP-P-1133 - Packaging of Synthetic Fiber Fabrics STANDARDS FEDERAL FED-STD-4 FED-STD-191 - Textile Test Methods - Glossary of Fabric Imperfections MILITARY MIL-STD-105 - Sampling Procedures and Tabl
8、es for Inspection by Attributes (Unless otherwise indicated, copies of federal and military specificatins, standards and handbooks are available from the Naval Publications and Forms Center, (ATTN: NPODS), 5801 Tabor Avenue, Philadelphia, PA 19120-9099.) * 2.1.2 Other Government documents, drawings,
9、 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 are those cited in the solicitation. Rules and Regulations Under the Textile Fiber Product Identification Act (A
10、pplication for copies should be addressed to the Federal Trade Commission, Washington, DC 20580-0001.) * 2.2 Non-Government publications. The following document(s) form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD
11、adopted shall be those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS shall be the issue of the documents cited in the solicitation. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted witho
12、ut license from IHS-,-,-MIL-C-21852F 83 7777706 03831153 W MIL-C-21852P AMERICAN SOCIETY FOR TESTING AND MATERIALS D1424 Test for Tear Resistance of Woven Fabrics by Falling-Pendulum (Elmendorf) Apparatus (Application for copies should be addressed to the American Society for Testing and Materials,
13、1916 Race Street, Philadelphia, PA 19103-1187,) TECHNICAL MANUAL OF THE AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND COLORISTS Method No. 8 - Colorfastness to Crocking: AATCC Crockmeter Method (Application for copies should be addressed to the AATCC National Headquarters, P.O. Box 12215, Research Tr
14、iangle Park, NC 27709-2215.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services,) * 2.3 Order of precedence. In the even
15、t of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3.1 Standard sample. The finished cloth shall ma
16、tch the standard sample for shade, and shall be equal to or better than the standard sample with respect to all. characteristics for which the standard sample is referenced (see 6.3). .3.2 First article. When specified, the contractor shall furnish sample 3.3 Material. (see 6.6) 3.3.1 Fiber. unit(s)
17、 for first article inspection and approval (see 4.3 and 6.2). * 3.3.1.1 Type I and II. The fiber shall be a polyamide prepared from hexamethylene diamine and adipic acid or its derivatives and shall have a minimum melting point of 472OF (244OC) when tested as specified in 4.5. * 3.3.1.2 Type III and
18、 IV. The fiber shall be first quality semi-dull regular tenacity nylon when tested as specified in 4.5. 3.3.2 Yarn. 3.3.2.1 Type I. The yarn shall be multifilament, nominal 50 denier (5.6 Tex) for the warp and filling, when tested as specified in 4.5. 3.3.2.2 Type II, The yarn shall be multifilament
19、 nominal 50 denier (5.6 Tex) for the warp and nominal 70 denier (7.6 Tex) for the filling when tested as specified in 4.5. 3 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-23852F 83 7777706 0383354 6 MIL-C-21852F 3.3,2,3 Type III and Type IV
20、. The yarn shall be continuous filament, nominal 70 denier (7.6 Tex) for both the warp and filling, when tested as - specified in 4.5. * 3.4 Physical requirements. The finished cloth shall conform to the requirements in Table I when tested as specified in 4.5. Table I - Physical requirements Charact
21、eristic Type 1 Type II Type III Type IV Weight - - oz/ydz ( g/mL ) 1.2 (41) 1.5 (51) 2.0 (68) ( max ) (max 1 (min). 2.3 (78) (max 1.75 (59) (min) 2.05 (69) ( max Yarns per inch (2.54cm) (min) Warp 100 95 106 Filling 66 65 92 Breaking Strength lbs (N) (min) Warp 80 (356) 75 (334) 110 (498) Fi 11 ing
22、55 (245) - 75 (334) 95 (423) Tearing Strength lbs (N) min. Warp 4.0 (18) 4.0 (18) 3.64 (16) Filling 4.0 (18) 6.0 (27) 2.97 (13) Air3permeability3 ft /min/ft (cm /sec/cm2) 120 t 20 70 t 15 - (61.0 - t 10.2) (35T6 - t 7.6.) Flex saiffness, in-lbs X 10- (max) (N.m) 1/ 1.5 (.17) Warp - - Fi 11 ing - - 0
23、.5 (0.06) - 100 68 110 (498) 85 (378) 5.0 (22) 3.5 (16) - 1/ When specified (see 6.2). * 3.4.1 Weave. The weave shall be a taffeta (plain weave), when tested as specified in 4.5. 4* 3.4.2 Width. The width of the finished cloth shall be as specified (see 6.2) and shall be the minimum acceptable width
24、 inclusive of selvages when fly shuttle or shuttleless looms with tuck-in selvages are used. For all other shuttleless looms the width measurement shall be made between the last warp yarn on each side with the protruding fringe excluded. - * 3.5 Color. The color shall be Camouflage Green 483 (see 6.
25、7) or as specified (see 6.2) and shall match the standard sample. 4 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-, MIL-C-21852F 3 W 7777706 0383355 8 W MIL-C-21852F e * 3.5.1 Matching. The finished cloth shall match the standard sample when view
26、ed under filtered tungsten lamps which approximates artificial daylight, and that have a color temperature of 7500 +200 K, with illumination of 100 +20 foot candles, and shall be a good match to the standard sample unaer incandescent lamplight at 2300 - +200 K. * 3.5.2 Colorfastness. 3.5.2.1 Type I
27、and II. The finished cloth shall show fastness to light, water, and crocking equal to or better than the standard sample when tested as specified in 4.5. As a limit of acceptablility or when no standard sample is available the finished cloth shall show a minimum of llgoodlt fastness to light and wat
28、er, and shall show a wet and dry crocking rating not lower than 3.0. 3.5.2.2 Type III, class 1 only and type IV. The finished cloth shall show fastness to light, laundering, perspiration, dry cleaning, and crocking equal to or better than the standard sample when tested as specified in 4.5. As a lim
29、it of acceptability or when no standard sample is available, the finished cloth shall show a minimum of “good1 fastness to light, laundering, perspiration, and dry cleaning, and shall show a wet and dry crocking rating not lower than 3.0. * 3.5.2.3 Type III, class 2 only. The finished cloth shall sh
30、ow fastness to light, dry cleaning, laundering, perspiration, and crocking equal to or better than the standard sample when tested as specified in 4.5, As a limit of acceptability or when no standard sample is available, the finished cloth shall show a minimum of irgoodt fastness to light, dry clean
31、ing, laundering, and perspiration and shall show a wet and dry crocking rating not lower than 3.0. 0 * 3.5.3 Spectral reflectance. Cloth dyed Camouflage Green 483 shall conform to the reflectance values specified below when tested as specified in 4.5.4. Spectral Reflectance Requirements Wavelength N
32、anometers (nm) 600 620 640 660 680 7 O0 7 20 7 40 7 60 780 800 820 840 860 5 Reflectance (%) Max. Min. 10 10 10 11 13 28 40 52 60 64 67 70 71 73 3 3 3 -3 3 4 5 7 11 17 24 32 37 40 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2L852F 83 W 9999
33、906 033356 T MIL-C-21852F e 3.6 Length and put-up. Unless otherwise specified (see 6.2), the finished cloth shall be furnished in continuous lengths, each not less than 40 yards (36.4m) for type III and IV cloth and 75 yards (68.2111) for type I and II cloth. Each length shall be put up on full widt
34、h rolls as specified in 5.1. 3.7 Finish. The cloth shall be scoured and heat set. The types I, II, and IV cloths may be calendered. Type III cloth shall not be calendered. * 3.7.1 Permanence of finish (type I and II). The finished cloth shall have the following requirements when tested as specified
35、in 4.5: a. The air permeability readings taken after testing shall be within 15 percent of the readings taken before testing. b. The cloth thickness after testing shall not exceed 10 percerit more than before testing. c. The shrinkage after testing shall not exceed 2 percent in either the warp or fi
36、lling direction. The preshrinking process used shall not be identified by name or by trademark either on cloth, ticket, or package. 3.7.2 Heat setting (type III and IV). The cloth shall be fully heat set at a minimum temperature of 400F (204C). The cloth shall show no appreciable change in color, di
37、stortion, or puckering and not more than 2.0 percent dimensional change in either the warp or the filling direction when tested as specified in 4.5. 3.7.3 Nonfibrous materials. The finished cloth shall not exceed 1.0 percent (type III class 1 only, and type IV) and 2.0 percent (types I and II) starc
38、h and protein content including chloroform-soluble and water-soluble material when tested as specified in 4.5. 3.7.4 pH, The pH of the water extract of the finished cloth shall be no . less than5.0 nor more than 8.5 when tested as specified in 4.5. * 3.7.5 Water repellent treatment (type III, class
39、2 only), The cloth shall be given an approved fluorocarbon water repellent treatment (see 6.5) and shall conform to the requirements of 3.7.5.1 and 3.7.5.2 when tested as specified in 4.5. * 3.7.5.1 Dynamic absorption, The dynanic absorption launderings shall be not more than 8 percent for the units
40、 with no sample unit greater than 10 percent when 4.5. initially and after 3 average of the sample tested as specified in * 3.7.5.2 Spray rating. The results of the three inc ividual determinations on the sample unit for spray rating shall be equal to or better than ratings 100, 100, 90 initially an
41、d 80, 80, 70 after 3 launderings when tested as specified in 4.5. * 3.7.6 Resistance to organic liquids (type III, class 2 only). The finished cloth shall show no wetting by n-tetradecane initially and after 3 launderings when tested as specified in 4.5. 6 Provided by IHSNot for ResaleNo reproductio
42、n or networking permitted without license from IHS-,-,-MIL-C-21852F 83 W 7779706 0383157 1 MIL-C-21852F * 3.7.7 Silicone oil. Type I and II finished cloth shall contain a silicone oil so applied what it is evenly distributed throughout the cloth. The amount of oil added shall be from 0.3 percent to
43、0.5 percent based on the weight of the dry cloth. The finisher shall submit a certification for each shippers roll, indicating that the silicone oil was used (see 6.2 and 6.10). 3.8 Seam slippage (types I and II). The load required to separate the seam 1/2 inch (1.3cm) shall be as stated below in ei
44、ther the warp or filling- direction when tested as specified in 4.5: Type I - 10 pounds (44N) (min) Type II - 20 pounds (89N) (min) 3.9 Fiber identification. Each roll shall be labeled or ticketed for fiber content in accordance with the Rules and Regulations under the Textile Fiber Products Identif
45、ication Act. 3.9.1 Face identification. The face side of the cloth shall be identified by stamping on that side with the word “FACE“ at each end of the roll. 3.10 Workmanship. The finished cloth shall conform to the quality establlshed by this specification. The demerit points per 100 square yards (
46、83.6111 ), when calculated as specified in Section 4, shall not exceed the established maximum point value. 4, QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspec
47、tion requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or order, the contractor may use his own or any other facilities suitable for performance of the inspection requirements specified herein, unless disapproved by the Government. The Governmen
48、t reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. * 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5. The i
49、nspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract, Sampling inspection, as part of manufacturing operations, is accept
