1、BRITISH STANDARD AEROSPACE SERIES BS 3F 135:2002 (Superseding BS 2F 135:1992) Braided nylon cord with unspecified dimensional stability for aerospace purposes ICS 49.025.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS 3F 135:2002 This British Standard, having been prepare
2、d under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Sector Policy and Strategy Committee on 11 July 2002 BSI 11 July 2002 BS F 135: December 1987 BS 2F 135: October 1992 The following BSI references relate to work on this British St
3、andard: Committee reference ACE/22 Draft for comment 00/706659 DC ISBN 0 580 39824 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/22, Cords, ropes and sewing threads for aerospace purposes, upon which the following
4、 bodies were represented: Linen Sewing Thread Manufacturers Association Ministry of Defence UK Defence Standardization Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBS 3F 135:2002 BSI 11 July 2002 i Contents Page Committees responsible Inside f
5、ront cover Foreword ii 1S c o p e 1 2 References 1 3 General requirements 1 4Y a r n 2 5 Construction and properties 2 6 Finish 2 7 Identification 3 List of references Inside back cover Figure 1 Braid interlacing 8 Table 1 General requirements (given in BS F 100) 1 Table 2 Yarn properties 2 Table 3
6、Cord construction and properties of cords CA: nominal 78 dtex (34 filaments) nylon 4 Table 4 Cord construction and properties of cords CB: nominal 235 dtex (34 filaments) nylon 4 Table 5 Cord construction and properties of cords CC: nominal 940 dtex (140 filaments) or 1 400 dtex (210 filaments) nylo
7、n 5 Table 6 Cord construction and properties of cords SA: nominal 78 dtex (34 filaments) nylon 5 Table 7 Cord construction and properties of cords SB: nominal 235 dtex (34 filaments) or nominal 110 dtex (34 filaments) nylon 6 Table 8 Cord construction and properties of cords SC: nominal 940 dtex (14
8、0 filaments) nylon 7BS 3F 135:2002 ii BSI 11 July 2002 Foreword This British Standard, prepared under the direction of Technical Committee ACE/22, Cords, ropes and sewing threads for aerospace purposes, is one of a series for textiles of a quality suitable for aerospace purposes. This British Standa
9、rd supersedes BS 2F 135:1992 which is withdrawn. This new edition incorporates technical changes but it does not reflect a full review or revision of the standard, which will be undertaken in due course. During its preparation account has been taken of the fact that basic quality requirements are in
10、cluded in the latest edition of BS F 100. The second edition of this standard introduced revised construction for cord SB 612 to achieve breaking strength requirements, and a PVC treatment for cord SC 714 for special applications. This new edition incorporates all earlier amendments, updates referen
11、ces to other standards, revises the reference to BS F 100 and improves nomenclature in line with other standards. This standard specifies requirements for braided nylon cord with unspecified dimensional stability manufactured from non-twist set yarn and/or twist set yarn as previously described in M
12、inistry of Defence DTD Specification 5620, which BS F 135:1987 replaced. It differs from DTD Specification 5620 primarily in that prestabilized yarns are now permitted. Braided nylon cord with specified dimensional stability, manufactured from twist set yarn, as previously described in Ministry of D
13、efence DTD Specification 5620, is specified in BS F 132. The quality assurance authority referred to in this standard is as stated in the contract or order, or the accredited representative of the authority stated, as instructed by the prime contractor. This publication does not purport to include a
14、ll the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 8, an
15、inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.BS 3F 135:2002 BSI 11 July 2002 1 1 Scope This British Standard specifies requirements for braided nylon cord of unspecified dimensional stability, manufactured from no
16、n-twist set yarn and/or twist set yarn for aerospace purposes. NOTE The latest revision of an Aerospace Series standard is indicated by a prefix number. 2 References 2.1 Normative references This British Standard incorporates, by reference, provisions from specific editions of other publications. Th
17、ese normative references are cited at the appropriate points in the text and the publications are listed on the inside back cover. Subsequent amendments to, or revisions of, any of these publications apply to this British Standard only when incorporated in it by updating or revision. 2.2 Informative
18、 references This British Standard refers to other publications that provide information or guidance. Editions of these publications current at the time of issue of this standard are listed on the inside back cover, but reference should be made to the latest editions. 3 General requirements In additi
19、on to the requirements specified in clauses 4, 5, 6 and 7 of this standard, the requirements and tests of the latest issue of BS F 100 as specified in Table 1 shall apply. Table 1 General requirements (given in BS F 100) Section of BS F 100 Section title Requirements and tests 1 General All requirem
20、ents. 2 a Quality requirements Requirements for manufacture of cordage only. Requirements for dyed textiles except those related to fabric intended for coating. Requirements for dimensions and tolerances of length of cordage except those relating to laid ropes. Requirements for freedom from corrosiv
21、e impurities (see Section 4 of BS F 100). Requirements for freedom from faults of braided cordage only. 3 Physical tests Tests for the determination of the mass of cordage. Tests for breaking strength of cordage. Tests for sheath slackness and core looping of braided cordage. Tests for plaits per un
22、it length in braided cordage. 4 Chemical tests If required by Section 2: test for conductivity of aqueous extract; test for pH value of aqueous extract; test for water-soluble chloride; test for water-soluble sulfate. a It is not intended that Section 2 tests should be performed on each batch. The f
23、requency of these tests should be agreed between the quality assurance authority and the cordage manufacturer.BS 3F 135:2002 2 BSI 11 July 2002 4 Yarn 4.1 The cord shall be manufactured from continuous filament bright nylon 6.6 yarn, which shall have the tenacity and extension at break as given in T
24、able 2. Table 2 Yarn properties 4.2 The yarn shall conform to the properties given in Table 2 to the satisfaction of the quality assurance authority when assessment is based on the manufacturers quality control procedures. NOTE In case of dispute, the tenacity and extension at break shall be determi
25、ned by the method of test and sampling given in BS EN ISO 2062:1995 and BS EN ISO 2060:1995, option 1. 4.3 The yarn shall not be sized. 5 Construction and properties 5.1 General 5.1.1 The cords shall be braided from yarns which conform to the relevant requirements of Table 2, Table 3, Table 4, Table
26、 5, Table 6, Table 7 and Table 8. 5.1.2 The construction and properties of the finished cords shall conform to Table 3, Table 4, Table 5, Table 6, Table 7 and Table 8, 5.2, clause 6 and clause 7. NOTE The cords listed in Table 3, Table 4, Table 5, Table 6, Table 7 and Table 8 do not require the use
27、of twist set yarns, though their use is permitted. 5.2 Sheath slackness and core looping Finished cords constructed as given in Table 3, Table 4 and Table 5 shall exhibit a maximum of 3 mm sheath slackness, and shall be free from core looping. 6 Finish 6.1 General The cord shall be supplied in one o
28、f the following conditions: a) undyed; or b) dyed. NOTE 1 When dyed cord is required, an increase in the mass per unit length of 10 % over that specified in Table 3, Table 4, Table 5, Table 6, Table 7 and Table 8 is permitted. NOTE 2 Cord designated SC 714 may be supplied in the undyed condition and
29、 treated with polyvinyl chloride (PVC) composition (see 6.3) where PVC treatment is identified as a requirement in the purchasers contract or order. 6.2 Dyeing 6.2.1 Where dyeing is required, the colour shall be specified with reference to a British Standard, e.g. BS 381C, or otherwise by pattern. 6
30、.2.2 Where dyeing is required, the yarns from which the cord is manufactured shall be dyed. Dyeing of the cord shall not be permitted after manufacture. Nominal dtex 78 110 235 940 1 400 Nominal number of filaments 34 34 34 140 210 Tenacity (cN/tex) 68 to 75 68 to 75 68 to 77 71 to 82 73 to 80 Exten
31、sion at break (%) 13 to 18 13 to 18 13 to 20 13 to 22 13 to 15BS 3F 135:2002 BSI 11 July 2002 3 6.3 Polyvinyl chloride treatment 6.3.1 When polyvinyl chloride treatment is specified by the purchasers contract or order, cord SC 714 shall be processed as follows. a) Wet treat to remove the spin finish
32、 and then heat set at 180 C to 185 C. b) Treat with a water-based polyvinyl chloride composition. NOTE A currently acceptable PVC finishing process gives an increase of 10 % by mass of the finished cord. 6.3.2 The breaking strength of the PVC treated cord shall be not less than the breaking strength
33、 of the untreated cord. 6.3.3 Cord with this finish shall be identified for ordering purposes by the addition of the words “polyvinyl chloride treated”, or suffixed “PVC” if codified. 7 Identification Cords shall be identified, for ordering purposes, by the number of this British Standard, i.e. BS 3
34、F 135 1) , together with the cord designation and, if required dyed, the colour. NOTE This identification may be codified. For example, cord CA 113, required dyed NATO green, may be identified as BS 3F 135/CA 113/BS 381C No. 285. 1) Marking BS 3F 135 on or in relation to a product represents a manuf
35、acturers declaration of conformity, i.e. a claim by or on behalf of 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 cer
36、tification of conformity, which may also be desirable.BS 3F 135:2002 4 BSI 11 July 2002 Table 3 Cord construction and properties of cords CA: nominal 78 dtex (34 filaments) nylon Table 4 Cord construction and properties of cords CB: nominal 235 dtex (34 filaments) nylon Designation Sheath Core Cord
37、designation Maximum mass per unit length Minimum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interlacing diagram (see Figure 1) No. of ends Construction of each end Twist (first time) Twist (second
38、 time) g/m N dtex turns/m turns/m dtex turns/m turns/m CA 111 0.9 310 8 + 8 8 + 8 78 5 240 (Z) 950 80 A 2 78 5 240 (Z) CA 112 1.8 445 8 + 8 16 + 16 78 5 240 (Z) 950 80 A 1 78 5 3 310 (S) 240 (Z) CA 113 3.7 1 350 8 + 8 8 + 8 78 5 3 310 (S) 240 (Z) 690 40 A 3 78 10 3 310 (S) 240 (Z) CA 114 5.5 1 800 8
39、 + 8 16 + 16 78 4 3 310 (S) 240 (Z) 470 40 A 4 78 10 3 310 (S) 240 (Z) CA 115 7.1 2 450 8 + 8 16 + 16 78 5 3 310 (S) 240 (Z) 470 40 A 4 78 13 3 310 (S) 240 (Z) CA 116 9.9 3 100 8 + 8 24 + 24 78 5 3 310 (S) 240 (Z) 390 40 A 4 78 13 3 310 (S) 240 (Z) NOTE Twist tolerances: first time 10 %; second time
40、 15 %. Designation Sheath Core Cord designation Maximum mass per unit length Minimum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interlacing diagram (see Figure 1) No. of ends Construction of each
41、end Twist (first time) Twist (second time) g/m N dtex turns/m turns/m dtex turns/m turns/m CB 211 2.5 890 8 + 8 16 + 16 235 2 310 (Z) 670 80 A 2 235 3 3 280 (S) 200 (Z) CB 212 3.8 1 350 8 + 8 8 + 8 235 3 2 280 (S) 200 (Z) 670 80 A 3 235 3 3 280 (S) 200 (Z) CB 213 5.5 1 800 8 + 8 8 + 8 235 3 3 280 (S
42、) 200 (Z) 470 40 A 4 235 3 3 280 (S) 200 (Z) CB 214 11 3 100 8 + 8 16 + 16 235 3 3 280 (S) 200 (Z) 430 40 A 4 235 6 3 280 (S) 200 (Z) CB 215 17 5 350 8 + 8 24 + 24 235 3 3 280 (S) 200 (Z) 280 40 A 6 235 6 3 280 (S) 200 (Z) NOTE Twist tolerances: first time 10 %; second time 15 %.BS 3F 135:2002 BSI 1
43、1 July 2002 5 Table 5 Cord construction and properties of cords CC: nominal 940 dtex (140 filaments) or 1 400 dtex (210 filaments) nylon Table 6 Cord construction and properties of cords SA: nominal 78 dtex (34 filaments) nylon Designation Sheath Core Cord designation Maximum mass per unit length Mi
44、nimum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interlacing diagram (see Figure 1) No. of ends Construction of each end Twist (first time) Twist (second time) g/m N dtex turns/m turns/m dtex turn
45、s/m turns/m CC 311 4.5 2 000 8 + 8 16 + 16 940 No added twist a 430 40 A 2 9404 100 (Z) CC 312 4.6 2 000 8 + 8 16 + 16 940 110 (Z) 440 40 A 2 940 4 150 (Z) CC 313 7.1 2 200 8 + 8 8 + 16 940 1 2 240 (S) 160 (Z) 470 40 B 4 940 1 3 240 (S) 160 (Z) CC 314 8.3 3 100 8 + 8 24 + 24 1 at 1 400 plus 2 at 940
46、 No added twist a 470 40 A 4 940 1 3 240 (S) 160 (Z) CC 315 11.5 4 000 12 + 12 12 + 24 940 1 2 240 (S) 160 (Z) 470 40 B 8 940 1 3 240 (S) 160 (Z) CC 316 15 6 500 8 + 8 32 + 32 1 400 No added twist a 300 40 A 6 940 5 100 (Z) NOTE Twist tolerances: first time 10 %; second time 15 %. a Single twist (le
47、ss than 25 turns/m) is negligible for yarn labelled “no added twist”. Designation Sheath Cord designation Maximum mass per unit length Minimum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist Plaits/m Cord interlacing diagram (see Figure 1) g/m N dt
48、ex turns/m SA 511 0.60 220 8 + 8 8 + 8 78 4 240 (Z) 950 80 A NOTE Twist tolerance: 10 %.BS 3F 135:2002 6 BSI 11 July 2002 Table 7 Cord construction and properties of cords SB: nominal 235 dtex (34 filaments) or nominal 110 dtex (34 filaments) nylon Designation Sheath Cord designation Maximum mass pe
49、r unit length Minimum breaking strength Maximum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interlacing diagram (see Figure 1) g/m N N dtex turns/m turns/m SB 611 0.45 180 8 + 8 8 + 8 235 No added twist a 910 80 A SB 612 0.45 210 260 8 + 8 8 + 8 110 2 No added twist a 910 80 A SB 613 1.9 670 8
