1、BRITISH STANDARD AEROSPACE SERIES BS EN 2330:1993 Textile glass fibre preimpregnates Testmethod for the determination of the content of volatile matter The European Standard EN 2330:1993 has the status of a British Standard UDC 677.521.074.077.62:620.1:543.713:629.7BSEN2330:1993 This British Standar
2、d, having been prepared under the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15May 1993 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference ACE/64 Draft for comment
3、 91/78897 DC ISBN 0 580 22144 X Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Insti
4、tut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National
5、 Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certifica
6、cin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN2330:1993 BSI 11-1999 i Contents Page Cooperating organizations Inside front cover National for
7、eword ii Foreword 2 Text of EN 2330 3 National annex NA (informative) Committees responsible Inside back coverBSEN2330:1993 ii BSI 11-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of
8、EN2330:1993 Aerospace series Textile glass fibre preimpregnates Test method for the determination of the content of volatile matter published by the European Committee for Standardization (CEN). EN 2330 was produced as a result of international discussion in which the UnitedKingdom took an active pa
9、rt. 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 pages This document compri
10、ses a front cover, an inside front cover, pages i and ii, theEN 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. This will be indicated in the amendment table on the inside front cover.EUROP
11、EAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2330 March 1993 UDC 677.521.074.077.62:620.1:543.713:629.7 Descriptors: Aircraft industry, glass-cloth, plastics, preimpregnated products, tests, determination, volatile matter English version Aerospace series Textile glass fibre preimpregnates Test me
12、thod for the determination of thecontent of volatile matter Srie arospatiale Primprgns de fibres deverre textile Mthode dessai pour la dtermination de la teneur en matires volatiles Luft- und Raumfahrt Glasfilament- Prepreg Prfmethode zur Bestimmung des Anteils an flchtigen Bestandteilen This Europe
13、an Standard was approved by CEN on1993-03-01. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concernin
14、g 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 (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own lang
15、uage 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, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and
16、UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 2330:1993 EEN2330:1993 BSI 11-1999 2 Foreword This European Standard has
17、 been prepared by the European Association of Aerospace Manufacturers (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 o
18、f AECMA, prior to its presentation to CEN. This European 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 September1993. Acc
19、ording to the CEN/CENELEC Internal Regulations, the following 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 UnitedKingdom. Conten
20、ts Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Principle 3 5 Apparatus 3 6 Atmosphere for conditioning and testing 3 7 Sampling and specimens 4 8 Procedure 4 9 Calculation and expression of results 4 10 Test report 4 Figure 1 Example of positioning of specimensonwoven textil
21、e glass fibre fabric sample across the width 5 Figure 2 Example of positioning of specimens on woven textile glass fibre fabric sample along an axis inclined at an angle ! as close as possible to the weft direction 5 Figure 3 Example of positioning of specimens on textile glass fibre unidirectional
22、sheet or tape sample 6EN2330:1993 BSI 11-1999 3 1 Scope 1.1 This standard specifies a method for determining the percentage of volatile matter in a textile glass fibre preimpregnate, for aerospace use. 1.2 This standard does not give any directives necessary to meet the health and safety requirement
23、s. 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 normative references are cited at the appropriate places in
24、 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 references the latest edition of the publication referred t
25、o applies. EN 2743, Aerospace series Reinforced plastics Standard procedures for conditioning prior to testing 1) . 3 Definitions 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 unidirectio
26、nal sheet, tape or woven fabric and used for the manufacture of moulded components. 4 Principle Determination of the loss in mass due to exposure of a specimen at an elevated temperature for a specified time. This loss is expressed as a percentage with respect to the initial mass. 5 Apparatus 5.1 Ba
27、lance with an accuracy of0,1mg 5.2 Template of standard specimen 5.3 Ancillary items such as sharp knife and tweezers 5.4 Tray of suitable material, e.g. metal or ceramic, if necessary to prevent the loss of any resin that may drip from the specimen while it is being heated 5.5 Oven capable of maint
28、aining the agreed temperature with an accuracy of 5 C and provided with a fan for circulating the air 5.6 Desiccator, containing a suitable drying agent (for example, silica gel, calcium chloride, phosphorus pentoxide) 6 Atmosphere for conditioning and testing 6.1 Conditioning 6.1.1 Conditioning of
29、material stored at ambient temperature For material stored at ambient temperature, the amount of material required for testing shall be sampled and conditioned in the test atmosphere (see6.2.1) for a minimum of2h, unless otherwise specified. 6.1.2 Conditioning of material stored below ambient temper
30、ature For material stored at temperatures lower than 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
31、be less than8h and the actual time shall be recorded in the report. When the material has reached ambient temperature, the amount required for testing shall be sampled and conditioned in the test atmosphere (see6.2.1), for a minimum of2h, unless otherwise specified. 6.2 Testing 6.2.1 Atmosphere for
32、testing The tests shall be carried out at temperature and relative humidity conditions in accordance with EN2743B. 6.2.2 Time interval between conditioning and testing Unless otherwise specified, the test shall be carried out within6h, after conditioning, the specimen being kept in the test atmosphe
33、re until the test is carried out. 1) Published as AECMA pre-standard at the date of publication of this standardEN2330:1993 4 BSI 11-1999 7 Sampling and specimens 7.1 Specimen The specimen has a square shape. The dimension of the sides shall be (100 1) mm. Other dimensions of the specimen may be use
34、d, subject to agreement between the purchaser and supplier, but shall have a surface area of100cm 2with a tolerance of 2%. 7.2 Number and distribution of specimens At least three specimens shall be used. These shall be evenly distributed and cut from the sample diagonally across the width or length,
35、 as shown in Figure 1 and Figure 2 for woven fabrics and in Figure 3 for unidirectional sheet or tape. 8 Procedure Cut the specimens from a representative sample of the material under test, using the appropriate template. Remove the separating film(s) and weigh each specimen to the nearest mg (m 1 )
36、, if necessary with a tray previously weighed to constant mass to the nearest mg (m 3 ). Transfer the specimens (with tray, if used) to an oven maintained at the specified temperature (seenote). Take care that the specimens are well ventilated by the hot air in the oven. After the agreed time (see n
37、ote), remove the specimens (and tray, if used) from the oven, cool down to ambient temperature in a desiccator and weigh to the nearest mg (m 2 ). NOTEOven temperature and time are those specified in the relevant material standard. 9 Calculation and expression of results The percentage of volatile m
38、atter in each specimen is calculated from the formula: or: where: Calculate the arithmetic mean of the values obtained for V. 10 Test report The test report shall include the following information: 10.1 Reference to the type of preimpregnate, with complete description, including prepreg batch number
39、 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 specimens, if different from this standard 10.6 Atmosphere used for conditioning and testing and actual time used for conditioning 10.7 Temperatu
40、re and time used in the oven 10.8 Individual values 10.9 Arithmetic mean value of the content of volatile matter, expressed as a percentage of the original mass 10.10 Observations on any circumstances liable to have influenced the results V : the content of volatile matter expressed as a percentage
41、of the original mass, m 1 : the initial mass of the specimen (and tray, if used), in g, m 2 : the mass of the specimen (and tray, if used) after heating, in g, m 3 : the mass of the tray (if used), in g. V m 1 m 2 () m 1 -100 without tray = V m 1 m 2 () m 1 m 3 () -100 with tray =EN2330:1993 BSI 11-
42、1999 5 Figure 1 Example of positioning of specimens on woven textile glass fibre fabric sampleacross the width Figure 2 Example of positioning of specimens on woven textile glass fibre fabric sample along on axis inclined at an angle ! as close as possible to the weft directionEN2330:1993 6 BSI 11-1
43、999 Figure 3 Example of positioning of specimens on textile glass fibre unidirectional sheetortapesampleBSEN2330:1993 BSI 11-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standa
44、rds Policy Committee (ACE/-) to Technical Committee ACE/64, upon which the following bodies were represented: British Plastics Federation Ministry of Defence Society of British Aerospace Companies LimitedBS EN 2330:1993 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is t
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