BS 2F 151-2007 Specification for nShuttleless woven cotton nwebbing for aerospace npurposes《航空航天用无梭编织棉网规范》.pdf

1、BS 2F 151:2007Specification forShuttleless woven cotton webbing for aerospace purposesICS 49.025.60NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document

2、 was last issued. BSI 2007ISBN 978 0 580 60437 9The following BSI references relate to the work on this standard:Committee reference ACE/65Draft for comment 07/30166750 DCPublication historyBS 3F 49 published in 1972BS 4F 49 published in February 1984First published as BS F 151 January 1991Amendment

3、s issued since publicationAmd. no. Date Text affectedBS 2F 151:2007 BSI 2007 iBS 2F 151:2007ContentsForeword ii1 Scope 12 Information and requirements to be agreed and documented 13 Terms and definitions 14 General requirements 15 Yarn 26 Manufacture of webbing 27 Finish 48 Construction and properti

4、es 59 Identification 5AnnexesAnnex A (informative) The determination of Mystox IP on fabric 6Annex B (informative) Obsolescent widths 8Bibliography 9List of figuresFigure 1 Shuttleless construction with spool type interlocking 3Figure 2 Shuttleless construction with the weft knitted with a locking t

5、hread 3Figure 3 Shuttleless construction with the weft secured by two knitted locking threads 4List of tablesTable 1 General requirements (given in BS F 100) 2Table 2 Construction and properties of webbing with widths used in new designs 5Table B.1 Construction and properties of obsolescent widths 8

6、Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 9 and a back cover.BS 2F 151:2007ii BSI 2007ForewordPublishing informationThis British Standard was published by BSI and came into effect on 30 November 2007. It was prepared by Technical Committ

7、ee ACE/39, Textiles for aerospace purposes. A list of organizations represented on this committee can be obtained on request to its secretary.SupersessionThis British Standard supersedes BS F 151:1991, which is withdrawn.Information about this documentThis new edition incorporates technical changes

8、only. It does not represent a full review or revision of the standard, which will be undertaken in due course.Hazard warningsUse of this documentIt has been assumed in the preparation of this British Standard that the execution of its provisions will be entrusted to appropriately qualified and exper

9、ienced people, for whose use it has been produced.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general informative materia

10、l is presented in smaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot

11、confer immunity from legal obligations.WARNING. This British Standard calls for the use of substances and/or procedures that can be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligations relating to heal

12、th and safety at any stage. BSI 2007 1BS 2F 151:20071 ScopeThis British Standard specifies the requirements for shuttleless woven cotton webbing in a range of widths for aerospace purposes.NOTE The latest revision of an Aerospace Series standard is indicated by a prefix number.2 Information and requ

13、irements to be agreed and documentedThe following information to be supplied by the purchaser shall be fully documented. For compliance with the standard both the definitive requirements specified throughout the standard and the following documented items shall be satisfied:a) the number of this Bri

14、tish Standard, i.e. BS 2F 151;b) the method of weaving (see Clause 6);c) the type of finish required (see 7.1);d) the colour, if required dyed (see 7.3.);e) the width required (see Clause 8).3 Terms and definitionsFor the purposes of this British Standard, the following terms and definitions apply.3

15、.1 protective treatmentproduct containing a 50:50 blend of ()-1-(2-(2,4-dil)-4-propyl-1,3-dioxolan-2-yl) methyl)-1H-1,2,4-triazole and 3-iodo-2-propynyl-butyl carbamate, applied at 0.4% to 0.8% combined actives on weight of fibreNOTE An example product is Mystox R.1)For a relative test method see An

16、nex A.4 General requirementsIn addition to the requirements specified in Clauses 5 to 9, the following sections and clauses of the latest edition of BS F 100 shall apply (see Table 1).1)Mystox R is proprietary to Catomance Ltd. This information is given for the convenience of users of this standard

17、and does not constitute an endorsement by BSI of the product named. Equivalent products may be used if they can be shown to lead to the same results.BS 2F 151:20072 BSI 20075YarnThe yarn shall be unsized cotton yarns of nominal linear densities as follows. Warp: 3 ply yarn of resultant linear densit

18、y 150 tex. Weft: 2 ply or 3 ply yarn of resultant linear density 40 to 50 tex. Locking thread: yarn of resultant linear density 20 to 40 tex.6 Manufacture of webbingThe weave shall be 2/2, 1 “ V twill.The webbing shall be woven on shuttleless looms in accordance with one of the following methods.i)

19、With spool type interlocking (SI) in the body of the webbing using the same yarn as the weft (see Figure 1 for guidance).ii) With the weft knitted with a locking thread (1L) (see Figure 2 for guidance).iii) With the weft secured by two knitted locking threads (2L) (see Figure 3 for guidance).The met

20、hod of weaving required shall be stated in the contract or order see 2b).12-Table 1 General requirements (given in BS F 100)Section Title Requirements and tests1 General All requirements 2 Quality requirements Requirements for manufacture of narrow fabricsRequirements for dimensions and tolerancesRe

21、quirements for dyed textiles except those related to fabric intended for coatingRequirements for freedom from corrosive impurities A)(see section 4)Requirements for freedom from defects of woven narrow fabrics3 Physical tests Test for the determination of the number of threads per unit length in fab

22、ricsTest for the determination of the mass of fabricsTest for breaking strength and extension under load4 Chemical tests If required by section 2:test for conductivity of aqueous extracttest for pH value of aqueous extracttest for water soluble chloridetest for water soluble sulphateA)Applies to sco

23、ured, dyed or rotproofed fabrics only complying with items b) and c) of 7.1. BSI 2007 3BS 2F 151:2007Figure 1 Shuttleless construction with spool type interlockingKey1 = Warp yarn 2 = Spool locking thread 3 = Weft yarnFigure 2 Shuttleless construction with the weft knitted with a locking thread213BS

24、 2F 151:20074 BSI 2007The edges of shuttleless constructions shall be uniform and even.NOTE The knitted edge should be pulled as closely as possible into the body of the fabric to avoid beading.7 Finish7.1 Condition of materialThe webbing shall be supplied in one of the following conditions:a) looms

25、tate; orb) scoured and rotproofed; orc) scoured, dyed and rotproofed.The finish required shall be stated in the contract or order see 2c).7.2 RotproofingWhere the webbing is to be supplied rotproofed, the webbing or the yarns from which it is woven shall be treated with a protective treatment as des

26、cribed in 3.1.Figure 3 Shuttleless construction with the weft secured by two knitted locking threadsKey1 = Locking thread 2 = Locking thread12 BSI 2007 5BS 2F 151:20077.3 DyeingWhere dyeing is required, either the webbing or the yarns from which it is woven shall be dyed.Where dyeing is required, th

27、e colour shall be specified by reference to a British Standard, e.g. BS 381C, or otherwise by pattern.The colour required shall be stated in the contract or order see 2d).8 Construction and propertiesThe webbing in the condition as supplied shall comply with the requirements of Table 2.The width req

28、uired shall be stated in the contract or order see 2e).NOTE 1 A pick denotes two threads laid per shed.NOTE 2 Obsolescent widths for use on existing equipment are quoted in Annex B.9 IdentificationThe webbing shall be identified by the number of this British Standard, i.e. BS 2F 151,2)together with

29、the width and, where required, the colour and rotproofing requirements.NOTE This identification may be codified. For example, 50 mm wide webbing dyed olive drab and a rotproofed product containing a protective treatment may be identified as BS 6F 49/50 mm/BS 381C No. 298/.Table 2 Construction and pr

30、operties of webbing with widths used in new designsWidthmmNumber of ends in width A)Max. mass per unit lengthg/mMin. breaking strengthNNumber of picks per centimetre10 30 6.5 44012 0.520 56 13.0 84525 74 17.0 1 10030 90 20.0 1 30040 116 27.0 1 75045 130 29.0 1 95050 148 33.0 2 20075 222 50.0 3 35010

31、0 294 66.0 4 450A)Tolerance +40.2)Marking BS 2F 151:2007 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 of the standard. The accuracy of the claim is solely the claimants re

32、sponsibility. Such a declaration is not to be confused with third-party certification of conformity.BS 2F 151:20076 BSI 2007Annex A (informative) The determination of Mystox IP on fabricA.1 ApplicationTo fabrics treated with products containing Mystox IP such as Mystox R, Mystox WR and Mystox IP its

33、elf.A.2 ApparatusHPLC fitted with Lichrosorb RP18 column 10 cm 4.6 mm ID, detector set at 230 nm UV pump at 2 ml/minute.Absorbance 8 0.01 integrator to measure peak areas and retention times.HPLC 560 autosampler. 2 ml glass vials with PFTE seals and screw caps.Ultrasonic bath set at 75 C.0.45 4 syri

34、nge filters.Calibrated stopwatch.Grade A pipettes.A.3 ReagentsAcetonitrile HPLC.Methanol HPLC.0.05% ammonium carbonate solution.Elution solvent: 50 vol. acetonitrile + 50 vol. 0.05% ammonium carbonate solution (mix well before use).A.4 MethodsFor UKAS accredited tests, ensure two replicate samples a

35、re prepared and the fabric is conditioned for 24 hours prior to the test at 20 C 2 C and 65% 2% RH.Into a 22 ml reaction vessel weigh 0.500 0.005 g diced fabric using a four-figure analytical balance, and whose calibration check is 0.003 g of the stated calibration weight.Place pipette in 10 ml of m

36、ethanol and cap (teflon side down). Wrap PTFE tape around the threads of the bottle and screw cap on securely. Heat the water in the ultrasonic bath. Check the temperature and when it is 75 C 2 C place the reaction tubes in the bath. Switch on the ultrasonic generator and sonicate for 15 minutes aga

37、inst a calibrated stopwatch. At the end of this time transfer the vials to a cold water bath for rapid cooling.Filter the extracts through a 0.45 4 syringe filter into a screw-top glass vial pending HPLC analysis. Wash out the syringe with methonol between samples; do not re-use the methanol. Dispos

38、e of the syringe using an environmentally acceptable method.Wash glassware. Dry and return to the analytical laboratory. BSI 2007 7BS 2F 151:2007A.5 StandardizationPrepare a strong stock propiconazole containing (10 Assay %) grams of laboratory analysed standard to 100 ml total volume in methanol. T

39、his stock is stable for at least three months when stored in a refrigerator. It contains 0.1% propiconazole.On the day of use prepare sub-dilution of 1 ml stock to 10 ml methanol this is a 100 mg/L standard.A.6 AnalysisSwitch on the HPLC and associated equipment for hr to stabilize using elution sol

40、vent. Set up and run queue for propiconazole analysis (method 5-13). Program and start autosampler. Record the RT and peak areas for the standard (AS). Inject each sample twice and obtain the mean sum for peak areas (AT).Follow method 5-12 cleaning procedure for HPLC column. This should be carried o

41、ut at the discretion of the user if cleaning is thought necessary. Warning signs that cleaning is required include peak splitting, poor peak resolution and baseline variablility.A.7 CalculationMystox IP % 0.01ATAS-10sample weight- 4=BS 2F 151:20078 BSI 2007Annex B (informative) Obsolescent widthsThe

42、 obsolescent widths quoted in Table B.1 should be used only for existing equipment.Table B.1 Construction and properties of obsolescent widths Widthmm Number of end in width A)Max. mass per unit lengthg/m Min. breaking strengthN Number of picks per centimetre13 38 8.3 535 12 0.538 112 27.0 1 650 12

43、0.5A)Tolerance +40 . BSI 2007 9BS 2F 151:2007BibliographyFor dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS F 100, Procedure for inspection and testing of textilesBS 381C, Specification for

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