1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 2001-11-30 prEN 4507 Edition P 1 November 2001 - Comments should be sent within six months after the date of publication to AECMA-STAN Mr Pays Gulledelle 94 Material Domain 6-1200 BRUXELLES PUBLISHED BY THE EUROPEAN ASSOCIATION O
2、F AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 8111 ICs: Descriptors: ENGLISH VERSION Aerospace series Non-metallic materials Text il es Test method Determination of water extractable matter Dtermin Srie arospatiale
3、Luft- und Raumfahrt Matriaux non-mtalliques Nichtmetallische Werkstoffe Textiles Textilien Mthode dessai Prfverfa hren tion des matires solubles dan leau Bestimmung von wasserlslichen Stoffen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European A
4、ssociation of Aerospace Industries - Standardization). It is published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical
5、content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee
6、for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX Page 2 prEN 4507: 2001 Contents Page O 1 2 3 4 5 6 7 8 9 10 11 12 . . . . Terms and definitions Health and safety . ResourceslFaci
7、lities Test campleclTest pieces . . Test procedure . . Measurement uncertainties . Test report . 3 3 3 3 3 3 4 4 5 5 6 6 6 Page 3 prEN 4507: 2001 O Introduction This standard is part of the series of EN non-metallic materials standards for aerospace applications. The general organisation of this ser
8、ies is described in EN 4385. This standard is a level 3 document as defined in EN 4385. I Scope This standard specifies the procedure for the determination of water extractable matter of textile material. This method has been written in response to an aerospace requirements for a method of extractio
9、n using hot water. 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 the next and the publications are listed hereafter. For dated references, subsequent amen
10、dments 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 to applies. IS0 383 EN 4385 EN 20139 Laboratory glassware - Interchangeable conical ground
11、joints Aerospace series - Non-metallic materials - General organisation of standardisation - Links between types of standards 1) Textiles - Standard atmospheres for conditioning and testing 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 wate
12、r extractable matter added or naturally occurring matter which may be present in the fabric, .e. yarn size, oils or grease that is extractable by boiling water 4 Health and safety This standard does not necessarily include all health and safety requirements associated with its use. Persons using thi
13、s standard shall be familiar with normal laboratory/test house practices. It is the responsibility of the user to establish satisfactory health, safety and environment practices and to ensure conformity with any European, National or local laws/regulations. 5 PrinciplelTechnique An aqueous extract i
14、s prepared using distilled or deionized water. The extractable matter is then measured by gravimetric method. 1) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 4507: 2001 6 ResourceslFacilities 6.1 Apparatus 6.1.1 neck of size 24/29 in accordance with IS0 383.
15、 Round bottomed flasks of chemically resistant glass with a volume of 250 ml and a ground glass 6.1.2 core in the neck of the stopcock A glass stopper incorporating a stopcock with P.T.F.E. core liner to prevent sticking of the glass NOTE Grease shall not be used for this purpose. 6.1.3 Water-cooled
16、 condensers 6.1.4 Laboratory balance, accurate to 0,0002 g 6.1.5 Filter paper with the following nominal characteristics - mass of 100 g/m2 - retention 2,5 pm - thickness 0,2 mm - ash content 0,007 % - initial filtration speed - slow NOTE Whatman 42 has been found suitable. 6.1.6 I O0 ml Evaporating
17、 vessel. 6.2 MaterialdReagents The following reagents are required and shall be of recognised analytical quality. - Distilled or deionized water, having a maximum conductivity of 1 mS/m 6.3 Qualification of personnel No specific requirements 7 Test samples/Test pieces Samples shall be taken represen
18、tative of the bulk and of sufficient size to provide all the test specimens required. All samples shall be kept identifiable to the bulk textiles which they represent. Cut the sample under test into pieces of such size that all parts readily wet out. Care must be taken to avoid any contamination of
19、samples and handling must be kept to an absolute minimum. NOTE Nominal 1 O mm squares have been found suitable. The samples are conditioned and tested in a standard atmosphere of (65 tr 2) % r.h. and (20 f 2) “C in accordance with EN 20139 - Standard Temperate Atmosphere For Testing. Page 5 prEN 450
20、7: 2001 8 Test procedure 8.1 flask (6.1 .I). Cut the sample into nominal 10 mm squares and weigh (5 I 0,05) g of conditioned sample into 8.2 To the flask containing the sample under test add (100 f 0.1) ml of distilled water (6.2.1). NOTE to 20 ml of water. For sample weight of less than 5 g, the li
21、quor ratio should be maintained at 1:20, .e. 1 g of sample 8.3 Connect the flask containing the sample and water to the water cooled condenser (6.1.3). Quickly bring contents to the boil and continue to boil liquor gently for 60 minutes. After this period disconnect and remove flask from condenser w
22、hilst liquor is still boiling close immediately with the glass stopcock (6.1.2). 8.4 created to ensure the extract is not contaminated. Do not filter or make up volume but cool rapidly to (20 f 2) OC to ensure a partial vacuum is 8.5 Determination of water extractable matter 8.5.1 filtered extract t
23、o dryness in a tared evaporating vessel (6.1.6). Filter the extract through a suitable filter paper (6.1.5) and evaporate a measured portion of the 8.5.2 of mass on drying for a further 30 min). Dry the residue at 105 “C to I10 “C until a constant mass is achieve (no more than 0,0005 g loss 9 Expres
24、sion of results 9. I Individual results Not applicable. 9.2 Calculation The water extractable matter (Pw) is calculated as a percentage by mass of the conditioned mass of the specimen, by the following equation a) For yarns or fabrics other than wool x103xm Pw = V b) For felts, loose fibres and wool
25、 in any textile form XIOX Pw = V where m is the mass of the residue (9) V is the volume of extract taken (mi) Page 6 prEN 4507: 2001 10 Measurement uncertainties Not applicable I1 Designation Not applicable 12 Test report The report shall include: a) b) c) d) e) Date of test; 9 Reference to this European Standard, .e. prEN 4507; Identification of sample tested (.e. lot number, batch number); The content of water extractable matter as a percentage of the conditioned mass of the specimen; Traceability to the individual who performed the test; Details of any deviation from this test method.
