1、I - AECMA PREN2558 88 LOL23LL 000347b- 9 A. E. C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 2558 issue P 1 October 1988 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TL. 45-63-82-85 UDC : Key words ENGLISH VERSION Aerospac
2、e series Carbon fibre preimpregnates Test method for the determination of the percentage of volatile matter Srie arospatiale Luft- und Raumfahrt Primprgns de fibres de carbone Kohlenstoffaser-Prepreg Mthode dessai Prfmethode pour la dtermination zur Bestimmung du pourcentage de matires volatiles des
3、 Anteiles von flchtigen Bestandteilen This Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approvedby the experts
4、of the concerned AECMA Commission following comment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After e
5、xamination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard o CEN (European Committee for Standardization) for final vote. Nota - Extra copies can be supplied by B.N.A.E.
6、- 8, rue Moreau-Vauthier - 92100 BOULOGNE-BILLANCOURT Edition approved for publication Comments should be cent within six months C7 Chairman 17th October 1988 A.E.C.M.A. Mr. BEZAUD after the date of publication decision 88, Bd. Malesherbes 75008 PARIS - FRANCE aecma 1988 Copyright Association Europe
7、ene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2558 88 W 101231L 0003L177 O W prEN 2558 Page 2 0619XSP1287T5 Contents 1 Scope and field of application 2 References 3 De
8、finitions 4 Principle of the method 5 Apparatus 6 Standard atmosphere for conditioning and testing 7 Sampling and test specimens 8 Procedure 9 10 Test report Calculation and expression of results Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license
9、with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2558 88 LOLZ3LL 00034782-pm prEN 2558 Page 3 1 i.1. This standard specifies a method for determining the percentage on voiat5le mutter in a carton fibre preinipregnate, for aerospcrce use. Scope an
10、d field of application 1.2 This standard does rrot give ariy directioris necessary to meet the health and safety requirements. It is the responsibility 05 the user of this standard to adopt appropriate health and saiety precautions. 2 Referesices Eti 2743 Aerospace series - Beinfo 4 %lastics. Standa
11、rd atmospheres for fy r conditioning and testing . 3 Definitions k carbon fibre preimpregtiate with a thennosetting or thermoplastic resin is a materia: that cai be piirchased in the form of a synthetic resin impregnated carbon fibre unidirectional sheet, tape or woven fabric arid used for the inanu
12、f acture of moulded components. it Principle of the method D of the difference in nass by maris of weighing before aiid ofter conditioning at an eievated temperature for 8 specified time, expressed as percentage of volatile matter wich respect to the initiai miss. 5 Apparatus 5.1 Balar,ce with ar, a
13、ccuracy of O,. mg 5.2 Template metal of standard specimen 5.3 Ancillary items such as sharp cutting knife a116 tweezers 5.4 Tray of suitable matefil., e.g. metcl or ceramic, if necessary to prebett tlie loss of any resix: that may drip from the specimen wlille it ia beifig heated 5.S Oven capable of
14、 maintaining the agreed temperature wich an accuracy 02 - -1- 5OC and provided wich G fan for circulating the air 5.6 Decicccitor containing a suitabie ryiiig agent (for example, silica gel, calcium chloride, phosphorus pentoxide), 1) In preptiration 0619XSP078ET5 Copyright Association Europeene des
15、 Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-7 AECMA PREN2558 88 W LOL2311 0003479 V prEW 2558 Yuge 4 6 Standard tmosphere for conditiouing and testing 6.1 Conditioning 6.1.1 Conditio
16、ning of material stored at mbient temperature For mciteriai stored at ambieiit temperature, the amount of material required for testing shall be sainpled and conditioned in the standird testing atnosphere (see clause 6.2.1) Tor a m:Lnimum of 2 h, unless otherwise specified. 6.1.2 Conditioning of mat
17、erial stored below ambieiit temperature For naterial stored at temperatures lower than ambicnt temperature, the material, suitably packed in ail airtight ad solvent resistant blbrg to prevent nioistue pick-up, shall be allowed to reach nhieiit teniperature ovc:r a perio o2 t5me according te the maco
18、 of the package. This time shall not be less tliai: 8 h and the. actual tiice shall be recorded in the report. When the msterial hac reached the zmbient iemperature, the amouiif: required for testing shall be sampl-ed and conditimed in the standard testing atnosphere (see clause 6.2.:; for a minimum
19、 of 2 h, unless otherwise specified. 6.2 Testing 6.2.1 Standard atmosphere for testing The tests shall be carried out at (23 + 2) C and (50 $. 5) % relative humidity. The ctaiidard atmosphere ohail be iri accordance with th; standard EN 2743, 6.2.2 Time interval between conditioning and testing Arte
20、r conditioning, the tes2 shall be carried out within 6 h, unless otherwise speciLiec!, the specimen being kept in the staridard atmosphere untii the test is carried out. Sampiii-ig End test specimens 7.1 Test specimen The specimen shall be square and have a length of (100 - .t i) LEI and a width o5
21、(ici0 f 1) mm. Other diuensioris of the test specimen niay be used, subject to gree L v= , 100 22 a tray is used where : V is the content of volatile natter expressed s a percentage rif Ehe originr? mass m is the initid mess of the specimen (aid tray, if tised) in g, n:, io the mass of Che specimen
22、(and tray, if used), tri g, after heaiing, m Cal-culate the arithmetic mean of the vdues obtained For V. 1 ,G is the nass of thti tray (if used) in g. 3 0619XSP0788T5 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo re
23、production or networking permitted without license from IHS-,-,-, _I- AECMA PREN2558 88 10L23L1i 0003Li8L 2 = prEN 2558 Page 6 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 numbe
24、r 10.2 Reference to this test method 10.3 Description of the sampling method 10.4 Number of test specimens used, if different from this standard 10.5 Dimensions of the test specimens, if different from this standard 10.6 Standard atmosphere used for conditioning and testing and actual time used for
25、conditioning 10.7 The temperature and tine used in the oven 10.8 The arithmetic mean value of the content of volatile matter, expressed as a percentage of the original mass 10.9 The individual values 10.10 Observations on any circumstances liable to influence the results. 0619XSP1287T5 Copyright Ass
26、ociation Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2558 88 W LOL23lrL 0003982 4 E prEN 2558 Page 7 Dimensions in millimetres I 1 I - t 50 .t, Warp yarns dire
27、ction . Width Figure 1 A - Example of diagonal positioning of test specimens on woven textile carbon fabric sample across the width Dimensions in millimetres Figure 1 B - Example of diagonal positioning of test specimens on woven textile carbon fabric sample along an axis inclined at an angle as clo
28、se as possible to the weft direction Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2558 88 m LOL23LL 0003Li83 b m prEN 2558 Page 8 Y Dimens
29、ions in millimetres Figure 2 - Example of diagonal positioning of test specimens on unidirectional sheet or continuous tape sample 0619XSP1287T5 e a Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
