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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2332:1993 Textile glass fibre preimpregnates Test method for the determination of the resin flow The European Standard EN 2332:1993 has the status of a British Standard UDC 677.521.074.077.62:620.1:543.7:629.7 Licensed Copy: sheffieldun sheffieldun, na, Fri No
2、v 03 01:17:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2332:1993 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 15 May 1993 BSI 12-1999 The followin
3、g BSI references relate to the work on this standard: Committee reference ACE/64 Draft for comment 91/78899 DC ISBN 0 580 22142 3 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards
4、organizations of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic O
5、rganization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund Portuga
6、lInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheff
7、ieldun sheffieldun, na, Fri Nov 03 01:17:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2332:1993 BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 23323 National annex NA (informative) Committees responsibleInside back cover Nationa
8、l annex NB (informative) Cross-referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:17:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2332:1993 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standard
9、s Policy Committee and is the English language version of EN 2332:1993 Aerospace series Textile glass fibre preimpregnates Test method for the determination of the resin flow published by the European Committee for Standardization (CEN). EN 2332 was produced as a result of international discussion i
10、n which the United Kingdom took an active part. NOTETextual errors. The French and German titles have been incorrectly translated. In the French title “Preimprgns de verre textile” has been corrected to read “Preimprgns de fibres de verre textile”. In the German title “Prmethode” has been corrected
11、to read “Prfmethode”. These corrections to the text have been reported to CEN. 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 co
12、nfer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. T
13、his will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:17:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2332 March 1993 UDC 677.521.074.077.62:620.1:543.7:629.7 Descriptors
14、: Aircraft industry, glass-cloth, plastics, preimpregnated products, tests, determination, resins, flows English version Aerospace series Textile glass fibre preimpregnates Test method for the determination of the resin flow Srie arospatiale Primprgns de fibres de verre textile Mthode dessai pour la
15、 dtermination de lcoulement de rsine Luft- und Raumfahrt Glasfilament- Prepreg Prfmethode zur Bestimmung des Harzflusses This European Standard was approved by CEN on 1993-03-01. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
16、European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (Eng
17、lish, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark,
18、Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-105
19、0 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 2332:1993 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:17:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2332:1993 BSI 12-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace M
20、anufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this standard has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European
21、Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 1993, and conflicting national standards shall be withdrawn at the latest by September 1993. According to the CEN/CENELEC Internal Regulations, the foll
22、owing countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Defin
23、itions3 4Principle3 5Apparatus3 6Atmosphere for conditioning and testing3 7Sampling and specimens4 8Procedure4 9Calculation and expression of results4 10Test report5 Figure 1 Example of positioning of plies for a specimen on woven textile glass fibre fabric sample across the width5 Figure 2 Example
24、of positioning of plies for a specimen on woven textile glass fibre fabric sample along an axis inclined at an angle ! as close as possible to the weft direction6 Figure 3 Example of positioning of plies for a specimen on textile glass fibre unidirectional sheet or tape sample6 Licensed Copy: sheffi
25、eldun sheffieldun, na, Fri Nov 03 01:17:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2332:1993 BSI 12-19993 1 Scope 1.1 This standard specifies a method for determining the resin flow of a textile glass fibre fabric preimpregnate, for aerospace use. 1.2 This standard does not give any directives
26、 necessary to meet the health and safety requirements. It is the responsibility of the user of this standard to adopt appropriate health and safety precautions. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normati
27、ve references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated referen
28、ces the latest edition of the publication referred to applies. EN 2330, Aerospace series Textile glass fibre preimpregnates Test method for the determination of the content of volatile matter. EN 2743, Aerospace series Reinforced plastics Standard procedures for conditioning prior to testing1). 3 De
29、finitions A textile glass fibre preimpregnate with a thermosetting or thermoplastic resin is a material in the form of a synthetic resin impregnated textile glass fibre unidirectional sheet, tape or woven fabric and used for the manufacture of moulded components. 4 Principle Flow of the resin from a
30、 weighed test specimen under agreed conditions of temperature and pressure. 5 Apparatus 5.1 Balance with an accuracy of 0,1 mg 5.2 Template of standard specimen 5.3 Ancillary items such as sharp cutting knife and tweezers 5.4 Any mechanical device capable of maintaining the agreed temperature with a
31、n accuracy of 5 C and the agreed pressure with an accuracy of 5 % 5.5 Metal plates not less than 200 mm 200 mm and approximately 1,6 mm thick 5.6 Laboratory timer 5.7 Auxiliary materials glass fabric, ca. six plies, 200 mm 200 mm, style 181 or similar, perforated polyvinyl fluoride (PVF) film, 0,1 m
32、m thickness, 200 mm 200 mm, glass fabric coated with polytetrafluoroethylene (PTFE), ca. three plies, 200 mm 200 mm. 5.8 Template or punch for cutting cured specimen 6 Atmosphere for conditioning and testing 6.1 Conditioning 6.1.1 Conditioning of material stored at ambient temperature For material s
33、tored at ambient temperature, the amount of material required for testing shall be sampled and conditioned in the test atmosphere (see 6.2.1) for a minimum of 2 h, unless otherwise specified. 6.1.2 Conditioning of material stored below ambient temperature For material stored at temperatures lower th
34、an the ambient temperature, the material, suitably packed in an airtight and solvent resistant bag to prevent moisture pick-up, shall be allowed to reach ambient temperature over a period of time according to the mass of the package. This time shall not be less than 8 h and the actual time shall be
35、recorded in the report. When the material has reached the ambient temperature, the amount required for testing shall be sampled and conditioned in the test atmosphere (see 6.2.1) for a minimum of 2 h, unless otherwise specified. 1) Published as AECMA pre-standard at the date of publication of this s
36、tandard Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:17:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2332:1993 4 BSI 12-1999 6.2 Testing 6.2.1 Atmosphere for testing The tests shall be carried out at temperature and relative humidity conditions in accordance with EN 2743B. 6.2.2 Tim
37、e interval between conditioning and testing After conditioning, the test shall be carried out within 6 h, unless otherwise specified, the specimen being kept in the test atmosphere until the test is carried out. 7 Sampling and specimens 7.1 Specimen The specimen, of square shape, shall be made up of
38、 at least three plies of preimpregnate and shall have a total mass of at least 12 g. The dimension of the sides shall be (100 1) mm. The plies shall be assembled by crossing alternatively each layer: each fabric layer having its diagonals parallel to the warp yarns. each layer of unidirectional shee
39、t or tape having one of its sides parallel to the fibre direction. Other dimensions of the specimen may be used, subject to agreement between the purchaser and the supplier, but having a surface area of 100 cm2 with a tolerance of 2 %. 7.2 Number and distribution of specimens At least two specimens
40、shall be used. The plies from which these are made shall be evenly distributed and cut from the sample diagonally across the width or length, as shown in Figure 1 and Figure 2 for woven fabrics and in Figure 3 for unidirectional sheet or tape. 8 Procedure Cut the necessary number of plies from the p
41、reimpregnate under test, using the appropriate template. Remove the separating film(s) and carefully superimpose the preimpregnate plies, oriented alternately at 0/90, to form a uniform pack and give a specimen of total mass within the range specified in 7.1. Weigh the specimen to the nearest mg (m0
42、) and then assemble the pack in the mechanical device as follows, starting with the bottom layer: one layer PTFE coated glass fabric, three layers glass bleeder fabric, one layer perforated PVF film, specimen, one layer perforated PVF film, three layers glass bleeder fabric, one layer PTFE coated gl
43、ass fabric. Locate the assembly between the heated platens of the mechanical device at the temperature (see note below) and apply pressure (see note below) within a maximum of 10 s, then maintain it for the specified period (see note below). NOTETemperature of the platens, pressure applied to the as
44、sembly and period of application are those as specified in the relevant material data sheet. Remove the laminate from the mechanical device. Remove the release film and bleeder fabric material. Condition the specimens in the test atmosphere (see 6.2.1) to constant mass. Cut out a square of length (7
45、0 0,7) mm and width of (70 0,7) mm from the centre of the cured laminate and weigh this to the nearest mg (m2). Subject to agreement between the purchaser and the supplier, the option of a circle with a diameter of (50 1) mm may be substituted for the square. 9 Calculation and expression of results
46、9.1 Uncorrected resin flow (not corrected for volatiles) The uncorrected resin flow of the specimen, expressed as a percentage of the original mass, is calculated from the formula: where: F1: the resin flow expressed as a percentage of the original mass, m0: the original mass of the specimen, in g,
47、m2: the mass of the cut out cured square or circle, in g, s1: the area of the original specimen, in mm2, s2: the area of the cut out cured or circle, in mm2. Calculate the arithmetic mean of the values obtained for F1. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:17:42 GMT+00:00 2006, U
48、ncontrolled Copy, (c) BSI EN 2332:1993 BSI 12-19995 9.2 Corrected resin flow for volatiles The corrected resin flow of the specimen, expressed as a percentage of the original mass, is calculated from the formula: where: Calculate the arithmetic mean of the values obtained for F2. 10 Test report The
49、test report shall include the following information: 10.1 Reference to the type of preimpregnate, with complete description, including prepreg batch number 10.2 Reference to this standard 10.3 Description of the sampling method 10.4 Number of specimens used, if different from this standard 10.5 Dimensions of the specimens, number of plies used and original mass 10.6 Atmosphere used for conditioning and testing and actual time used for conditioning. 10.7 Curing tempera