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1、BRITISH STANDARD BS 2F 127: 1991 (Superseding BS F 127:1983) Incorporating Amendments Nos. 1 and 2 Specification for Nylon fabrics suitable for coating with natural or synthetic elastomers for aerospace purposes ICS 49.025.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Lic
2、ensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127:1991 This British Standard, having been prepared under the direction of the Aerospace Standards Policy Committee, was published under the authority of the Standards Board and comes into
3、effect on 29 March 1991 BSI 29 October 2001 The following BSI references relate to the work on this standard: Committee reference ACE/54 Draft for comment 90/74517 DC ISBN 0 580 19422 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Aer
4、ospace Standards Policy Committee (ACE/-) to Technical Committee ACE/54, upon which the following bodies were represented: British Fabric Association British Rubber Manufacturers Association British Textile Employers Association Man-made Fibres Producers Committee Ministry of Defence Society of Brit
5、ish Aerospace Companies Ltd. Society of Dyers and Colourists Amendments issued since publication Amd. No.DateComments 7967October 1993 1323929 October 2001Indicated by a sideline Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127:1991
6、 BSI 29 October 2001 i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2General requirements1 3Yarn1 4Manufacture of fabric1 5Finish1 6Construction and properties of the fabric as supplied for coating2 7Water extractable matter2 8Copper content3 9Dimensional stability on he
7、ating3 10Identification3 Appendix A Information to be supplied by the purchaser4 Table 1 General requirements (as given in BS F 100)2 Table 2 Yarn properties2 Table 3 Construction and properties of the fabric as supplied for coating3 Publications referred toInside back cover Licensed Copy: sheffield
8、un sheffieldun, na, Tue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127:1991 ii BSI 29 October 2001 Foreword This British Standard, prepared under the direction of the Aerospace Standards Policy Committee, is one of a series for textiles of a quality suitable for aerospace purpo
9、ses, and is a revision of BS F 127 which is withdrawn. Quality requirements as defined in the latest edition of BS F 100 have been included, together with details of information to be supplied by the purchaser. The fabric variations based on different twist levels for the yarns have been reduced and
10、 the requirements for yarn properties adjusted to reflect the improved properties of modern yarns. References to previous specifications on which BS F 127 was based have been deleted. NOTEThis British Standard includes requirements for the copper content of the woven fabric as supplied. Attention is
11、 drawn to the use of copper compounds during fibre production to impart resistance to degradation by heat and ultra violet light. Copper added in this way has not been shown to be detrimental to coating elastomers. Its presence is however detectable when carrying out copper content determination in
12、accordance with BS F 100. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of page
13、s This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Sidelining in this document indicates the most recent changes by amend
14、ment. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127:1991 BSI 29 October 2001 1 1 Scope This British Standard specifies the requirements for a series of nylon fabrics suitable for coating with natural or synthetic elastomers, for
15、subsequent use primarily in the manufacture of safety and survival equipment for aerospace purposes. NOTE 1The information to be supplied by the purchaser in the contract or order is listed in Appendix A. NOTE 2The titles of the publications referred to in this standard are listed on the inside back
16、 cover. NOTE 3The latest revision of an Aerospace Series Standard is indicated by a prefix number. 2 General requirements 2.1 In addition to the requirements specified in clauses 3 to 10 the sections of the latest edition of BS F 100, as given in Table 1, shall apply. 2.2 The yarn breaking strength
17、and extension at break shall be determined in accordance with BS 1932-1 except that the number of tests required to produce a package mean shall be five. 2.3 The yarn tenacity shall be determined when the yarn has been tested in accordance with method A of BS 1932-1 except that the number of tests r
18、equired to produce a package mean shall be five. 2.4 When required, the yarn twist shall be determined in accordance with BS 2085 except that the number of tests required to produce a package mean shall be five. NOTEDesign and specifying authorities should consider the need to establish, by test, th
19、e suitability of any textile for its intended end-use. 3 Yarn 3.1 Type The yarn shall be continuous filament yarn manufactured from nylon 6.6, with spinning twist. NOTE 1If added twist is required this should be stated in the contract or order (see Appendix A). NOTE 2The yarn may be with or without
20、intermingled filaments. 3.2 Properties The yarn shall comply with Table 2. 4 Manufacture of fabric 4.1 The fabric shall be manufactured from yarn complying with Table 2. 4.2 The weave shall be plain. 4.3 Where fabric is to be supplied for coating, any sizes or dressings used in preparation or weavin
21、g processes shall be compatible with the coating process. NOTECertain types of size, e.g. those based on polyacrylic acid, are known to be incompatible with some elastomers. 5 Finish 5.1 General The fabric shall be supplied in one of the following conditions: a) loomstate; or b) scoured and heatset;
22、 or c) scoured, dyed (see 5.2) and heatset. NOTE 1It is very important that the scouring process is thorough in order to remove surfactants and processing aids. NOTE 2The type of finish required should be stated in the contract or order (see Appendix A). Licensed Copy: sheffieldun sheffieldun, na, T
23、ue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127:1991 2 BSI 29 October 2001 Table 1 General requirements (as given in BS F 100) Table 2 Yarn properties 5.2 Dyeing Where dyeing is required, the colour of the fabric shall be specified either by reference to a British Standard, e
24、.g. BS 381C, or otherwise by pattern. NOTEIf the fabric is required dyed, the colour should be specified in the contract or order (see Appendix A). 6 Construction and properties of the fabric as supplied for coating 6.1 The width measurement of the fabric as supplied shall not include selvedges. NOT
25、E 1Fabric may be woven in multiple widths with leno weave edges and slit to the required width. NOTE 2The width required should be stated in the contract or order (see Appendix A). 6.2 When tested in accordance with clause 2, the fabric as supplied shall comply with the requirements of Table 3 and c
26、lauses 7, 8 and 9. 7 Water extractable matter The amount of water extractable matter shall not exceed: a) 2.0 % by mass for fabrics supplied loomstate; b) 1.0 % by mass for fabrics supplied scoured. SectionTitleRequirements and tests 1GeneralAll requirements 2Quality requirementsRequirements for the
27、 manufacture of wide fabrics Requirements for dyed textiles Requirements for dimensions and tolerances: general and wide fabrics Requirements for freedom from corrosive impurities Requirements for freedom from defects 3Physical testsTest for the determination of the number of threads, wales or cours
28、es per unit length in fabrics Test for the determination of mass of wide fabrics Test for breaking strength and extension under load of wide fabrics Test for dimensional stability on heating 4Chemical testsTest for water extractable matter Tests for traces of iron and copper Fabric designation Nomin
29、al linear density of yarn and number of filaments Mean tenacity (min.) Mean extension at break (max.) 1 dtex 33 fils f10 cN/tex 56 % 30 250f155630 467f204050 378f20 to f344050 5110f17 or f346925 7228f344050 6, 8235f34 to f366925 9, 11470f68 to f726925 10950f136 to f1406925 Licensed Copy: sheffieldun
30、 sheffieldun, na, Tue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127:1991 BSI 29 October 2001 3 8 Copper content The maximum copper content of the finished fabric shall be 30 mg/kg for fabric designations 1, 2, 3, 4 and 7, and 70 mg/kg for fabric designations 5, 6, 8, 9, 10 and
31、 11. NOTE 1Particular attention should be paid to the copper content of the finished fabric when using this British Standard to draw up specifications for coated fabrics, in order that due precautions may be taken to ensure that the resulting coated fabrics are satisfactory for their designed end-us
32、e. NOTE 2Manufacturers should be able to demonstrate that there has been no increase in copper content arising from subsequent fibre, yarn and fabric processing. 9 Dimensional stability on heating The dimensional stability, determined using dry heat, shall be such that the dimensional change on heat
33、ing shall not exceed: a) 3.5 % in both warp and weft directions for fabrics supplied loomstate; b) 2 % in the warp direction and 3.5 % in the weft direction for fabrics supplied heatset. 10 Identification The fabric shall be identified for ordering purposes by the number and date of this British Sta
34、ndard, i.e. BS 2F 127:19911), together with the relevant designation as given in Table 2, the finish and, if required dyed, the colour. NOTEThis identification may be codified, e.g. fabric designation No. 11 required scoured, heatset and dyed bold yellow may be identified as BS 2F 127/11/scoured and
35、 heatset/BS 381C No. 363. Table 3 Construction and properties of the fabric as supplied for coating 1)Marking BS 2F 127:1991 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements o
36、f the standard. The accuracy of the claim is therefore solely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of conformity, which may also be desirable. Designation Nominal linear density of yarn. Warp and weft Minimum numbe
37、r of threads per centimetre Mass per unit area Minimum average breaking strength WarpWeftWarpWeft 1 2 3 4 5 6 7 8 9 10 11 dtex 33 50 78 67 110 235 228 235 470 950 470 45.5 39.5 37.0 41.5 27.0 16.5 26.0 24.5 13.0 8.0 24.5 40.0 39.5 37.0 39.5 27.0 16.5 22.0 24.5 13.0 8.0 16.5 g/m2 30?5 45?5 60?5 65?5
38、65?5 85?5 120?10 125?10 140?10 175?10 225?10 N/50 mm 335 550 480 530 830 1 155 1 135 1 750 1 850 2 445 2 890 N/50 mm 280 550 480 500 830 1 155 965 1 750 1 850 2 445 2 225 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127:1991 4 BSI 2
39、9 October 2001 Appendix A Information to be supplied by the purchaser The following information should be stated by the purchaser in the contract or order: a) the number of this British Standard, i.e. BS 2F 127; b) the twist level, if added twist is required (see 3.1); c) the fabric designation (see
40、 3.2); d) the finish required (see 5.1); e) the colour, if required dyed (see 5.2); f) the minimum usable width required (see 6.1). Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127:1991 BSI 29 October 2001 Publications referred to B
41、S F 100, Procedure for inspection and testing of textiles. BS 381C, Specification for colours for identification, coding and special purposes. BS 1932, Testing the strength of yarns and threads from packages. BS 1932-1, Methods for determination of breaking strength and breaking extension. BS 2085,
42、Method of test for determination of twist in yams, direct counting method. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:26:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2F 127: 1991 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent nati
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