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 LAWBS 2
2、F 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 effect on 29 March 1991 BSI 29 October 2001 The following BSI references relate to the work on this standard
3、: 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 Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/54, upon which the following bodies wer
4、e represented: British Fabric Association British Rubber Manufacturers Association British Textile Employers Association Man-made Fibres Producers Committee Ministry of Defence Society of British Aerospace Companies Ltd. Society of Dyers and Colourists Amendments issued since publication Amd. No. Da
5、te Comments 7967 October 1993 13239 29 October 2001 Indicated by a sidelineBS 2F 127:1991 BSI 29 October 2001 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 General requirements 1 3Y a r n 1 4 Manufacture of fabric 1 5 Finish 1 6 Construction and properties of t
6、he fabric as supplied for coating 2 7 Water extractable matter 2 8 Copper content 3 9 Dimensional stability on heating 3 10 Identification 3 Appendix A Information to be supplied by the purchaser 4 Table 1 General requirements (as given in BS F 100) 2 Table 2 Yarn properties 2 Table 3 Construction a
7、nd properties of the fabric as supplied for coating 3 Publications referred to Inside back coverBS 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 ae
8、rospace purposes, and is a revision of BS F 127 which is withdrawn.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 bee
9、n reduced and 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. NOTE This British Standard includes requirements for the copper content of the woven fabric as supplied
10、. Attention is 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 det
11、ermination in 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. S
12、ummary of pages 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 ch
13、anges by amendment.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 subsequent use primarily in the manufacture of safety and survival equipment for aerospace pur
14、poses. NOTE 1 The information to be supplied by the purchaser in the contract or order is listed in Appendix A. NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover. NOTE 3 The latest revision of an Aerospace Series Standard is indicated by a prefix
15、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 and extension at break shall be determined in accordance with BS 1932-1 except that the num
16、ber 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 required to produce a package mean shall be five. 2.4 When required, the yarn twist shall be
17、 determined in accordance with BS 2085 except that the number of tests required to produce a package mean shall be five. NOTE Design and specifying authorities should consider the need to establish, by test, the suitability of any textile for its intended end-use. 3 Yarn 3.1 Type The yarn shall be c
18、ontinuous filament yarn manufactured from nylon 6.6, with spinning twist. NOTE 1 If added twist is required this should be stated in the contract or order (see Appendix A). NOTE 2 The yarn may be with or without intermingled filaments. 3.2 Properties The yarn shall comply with Table 2. 4 Manufacture
19、 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 weaving processes shall be compatible with the coating process. NOTE Certain types of size, e.
20、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; or c) scoured, dyed (see 5.2) and heatset. NOTE 1 It is very important that the scouri
21、ng process is thorough in order to remove surfactants and processing aids. NOTE 2 The type of finish required should be stated in the contract or order (see Appendix A).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 d
22、yeing is required, the colour of the fabric shall be specified either by reference to a British Standard, e.g. BS 381C, or otherwise by pattern. NOTE If 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
23、as supplied for coating 6.1 The width measurement of the fabric as supplied shall not include selvedges. NOTE 1 Fabric may be woven in multiple widths with leno weave edges and slit to the required width. NOTE 2 The width required should be stated in the contract or order (see Appendix A). 6.2 When
24、tested in accordance with clause 2, the fabric as supplied shall comply with the requirements of Table 3 and clauses 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
25、scoured. Section Title Requirements and tests 1 General All requirements 2 Quality requirements Requirements for the manufacture of wide fabrics Requirements for dyed textiles Requirements for dimensions and tolerances: general and wide fabrics Requirements for freedom from corrosive impurities Requ
26、irements for freedom from defects 3 Physical tests Test for the determination of the number of threads, wales or courses 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
27、 heating 4 Chemical tests Test for water extractable matter Tests for traces of iron and copper Fabric designation Nominal 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 2 50 f15 56 30 4 67 f20 40 50 37 8 f 2 0 t o
28、 f 3 4 4 0 5 0 5 110 f17 or f34 69 25 72 2 8f 3 44 05 0 6, 8 235 f34 to f36 69 25 9, 11 470 f68 to f72 69 25 10 950 f136 to f140 69 25BS 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, an
29、d 70 mg/kg for fabric designations 5, 6, 8, 9, 10 and 11. NOTE 1 Particular 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 coa
30、ted fabrics are satisfactory for their designed end-use. NOTE 2 Manufacturers 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
31、heat, shall be such that the dimensional change on heating 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 order
32、ing purposes by the number and date of this British Standard, i.e. BS 2F 127:1991 1) , together with the relevant designation as given in Table 2, the finish and, if required dyed, the colour. NOTE This identification may be codified, e.g. fabric designation No. 11 required scoured, heatset and dyed
33、 bold yellow may be identified as BS 2F 127/11/scoured and 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
34、 the manufacturer that the product meets the requirements of 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
35、Nominal linear density of yarn. Warp and weft Minimum number of threads per centimetre Mass per unit area Minimum average breaking strength Warp Weft Warp Weft 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
36、.5 27.0 16.5 22.0 24.5 13.0 8.0 16.5 g/m 230 5 45 5 60 5 65 5 65 5 85 5 120 10 125 10 140 10 175 10 225 10 N/50 mm 335 550 480 530 830 115 5 113 5 175 0 185 0 244 5 289 0 N/50 mm 280 550 480 500 830 115 5 965 175 0 185 0 2 445 222 5BS 2F 127:1991 4 BSI 29 October 2001 Appendix A Information to be su
37、pplied 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 3.2); d) the finish required (see 5.1); e) th
38、e colour, if required dyed (see 5.2); f) the minimum usable width required (see 6.1).BS 2F 127:1991 BSI 29 October 2001 Publications referred to BS F 100, Procedure for inspection and testing of textiles. BS 381C, Specification for colours for identification, coding and special purposes. BS 1932, Te
39、sting the strength of yarns and threads from packages. BS 1932-1, Methods for determination of breaking strength and breaking extension. BS 2085, Method of test for determination of twist in yams, direct counting method.BS2F127: 1991 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Ins
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