1、August 2013 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、83.120!%mq“2047478www.din.deDDIN EN 16245-5Fibre-reinforced plastic composites Declaration of raw material characteristics Part 5: Specific requirements for core materials;English version EN 16245-5:2013,English translation of DIN EN 16245-5:2013-08Faserverstrkte Verbundwerkstoffe Angabe von Werksto
3、ffeigenschaften Teil 5: Spezifische Anforderungen an den Kernwerkstoff;Englische Fassung EN 16245-5:2013,Englische bersetzung von DIN EN 16245-5:2013-08Composites plastiques renforcs de fibres Dclaration des caractristiques des matires premires Partie 5: Exigences particulires pour les matriaux dme;
4、Version anglaise EN 16245-5:2013,Traduction anglaise de DIN EN 16245-5:2013-08www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 14 pages 07.13 DIN EN 16245-5:2013-08 2 A comma is used as the decimal marker. National foreword This document
5、 (EN 16245-5:2013) has been prepared by Technical Committee CEN/TC 249 “Plastics” (Secretariat: NBN, Belgium). The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-02-02 AA Rieselfhige Duroplaste und lang
6、faser-verstrkte Kunststoffe. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16245-5 May 2013 ICS 83.120 English Version Fibre-reinforced plastic composites - Declaration of raw materialcharacteristics - Part 5: Specific requirements for core materialsComposites plastiques renforcs de fibres -
7、Dclaration des caractristiques des matires premires - Partie 5: Exigences particulires pour les matriaux dme Faserverstrkte Verbundwerkstoffe - Angabe von Werkstoffeigenschaften - Teil 5: Spezifische Anforderungen an den Kernwerkstoff This European Standard was approved by CEN on 21 March 2013. CEN
8、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 concerning such national standards may be obtained on appli
9、cation to the CEN-CENELEC Management Centre 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 language and notified to the CEN-CENELEC Man
10、agement Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv
11、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-100
12、0 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16245-5:2013: EEN 16245-5:2013 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Content of a declaration 5 5 Specific dec
13、laration requirements .5 5.1 General 5 5.2 Properties of foam core material6 5.3 Properties of balsa core material .9 Bibliography . 12 DIN EN 16245-5:2013-08 EN 16245-5:2013 (E) 3 Foreword This document (EN 16245-5:2013) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the secretaria
14、t of which is held by NBN. 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 November 2013, and conflicting national standards shall be withdrawn at the latest by November 2013. Attention is drawn t
15、o the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. EN 16245 consists of the following parts, under the general title Fibre-reinforced plastic composites Decl
16、aration of raw material characteristics: Part 1: General requirements Part 2: Specific requirements for resin, curing systems, additives and modifiers Part 3: Specific requirements for fibre Part 4: Specific requirements for fabrics Part 5: Specific requirements for core materials (the present docum
17、ent) According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France
18、, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16245-5:2013-08 EN 16245-5:2013 (E) 4 1 Scope This European Standard specif
19、ies the minimum information to be declared for core materials to be used for the manufacturing of composites products. These specific declaration requirements are in addition to the general requirements given EN 16245-1. This document includes requirements for the Certificate of Analysis (CoA). The
20、purpose of the CoA is to verify that material properties conform to the declared values. This part of the standard is applicable to rigid foam and balsa core material. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensab
21、le for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 16245-1:2013, Fibre-reinforced plastic composites Declaration of raw material characteristics Part 1: General req
22、uirements EN ISO 291, Plastics Standard atmospheres for conditioning and testing (ISO 291) EN ISO 844, Rigid cellular plastics Determination of compression properties (ISO 844) EN ISO 845, Cellular plastics and rubbers Determination of apparent density (ISO 845) ISO 1922, Rigid cellular plastics Det
23、ermination of shear strength ISO 8301, Thermal insulation Determination of steady-state thermal resistance and related properties Heat flow meter apparatus ASTM C273, Standard Test Method for Shear Properties of Sandwich Core Materials ASTM C297, Standard Test Method for Flatwise Tensile Strength of
24、 Sandwich Constructions ASTM C365, Standard Test Method for Flatwise Compressive Properties of Sandwich Cores ASTM D1623, Standard Test Method for Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics 3 Terms and definitions For the purposes of this document, the following terms and def
25、initions apply. 3.1 core material central component of a sandwich construction to which the sandwich faces or skins are attached 3.2 balsa core material rigid balsa sheets cut in end-grain configuration to assure good compressive properties normal to the plane DIN EN 16245-5:2013-08 EN 16245-5:2013
26、(E) 5 3.3 foam core material various different polymer materials that are foamed in order to reduce their specific weight 3.4 nominal value supplier defined value, typically defined by the mean value derived from a historical database of the respective property SOURCE: EN 16245-1:2013, 3.6 3.5 stati
27、stical minimum value mean value minus two standard deviations of a historical population, i.e. there is 97,6 % probability that the test values are above this statistically defined minimum value Note 1 to entry: This implies that all or part of the received material can have CoA values below the sta
28、tistical minimum value declared by the manufacturer. In order to avoid this, the customer can instead require guaranteed minimum value to be declared. SOURCE: EN 16245-1:2013, 3.8 3.6 guaranteed minimum or maximum value value guaranteed by the supplier, such as no single sample value is below or abo
29、ve the declared values, respectively SOURCE: EN 16245-1:2013, 3.2 4 Content of a declaration A declaration for the core material shall consist of information according to EN 16245-1:2013, Clause 5 and Clause 5 of this standard. 5 Specific declaration requirements 5.1 General The specific requirement
30、s for core materials are given below. All declaration requirements, i.e. the general information according to EN 16245-1 and the specific declaration requirements according to this part (i.e. EN 16245-5), and application dependant requirements as agreed between manufacturer/supplier and customer, sh
31、all be declared by the supplier as information to the customer. The following also apply: if the property given has reference to a test method standard or test method, this test method standard or test method shall be used; the values given shall be in accordance with the test method standard given;
32、 if the test environment is not clearly stated in the specific test method standard, the standard atmosphere conditioning and testing shall be carried out in accordance with EN ISO 291; the manufacturer shall be responsible for the performance and results of all tests required for the declaration; D
33、IN EN 16245-5:2013-08 EN 16245-5:2013 (E) 6 the material property declaration shall account for any density variation. Tolerances and nominal values shall be given considering the range of density specified in 5.2; the material and fixture shall be acclimated at the test temperature for a period suf
34、ficient to ensure even temperature throughout the specimen and fixture. If the test method standard does not specifically mention how the test at elevated/decreased temperature shall be performed, the test shall be performed in a temperature-controlled chamber. The temperature in the specimen shall
35、not deviate by more than 2 C from the given test temperature. 5.2 Properties of foam core material The specific declaration requirements for core material are listed below. The declaration including tolerances shall be given in accordance with the test method standards stated in Table 1 and Table 2.
36、 If the core sheets consist of different core blocks bonded together in order to obtain required thickness/size, the given declaration shall be valid for the assembled core sheet. The following specific declaration requirements a) to q) apply for all foam core material independent of application: a)
37、 identification (name/number/code used by the manufacturer for identification purposes); b) density kg/m3 nominal, guaranteed minimum and guaranteed maximum value; c) shear strength MPa nominal and statistical minimum value: 1) Nominal values shall also be given for test temperatures -20 C and +80 C
38、. d) shear modulus MPa nominal and statistical minimum value: 1) Nominal values shall also be given for test temperatures -20 C and +80 C. e) shear elongation (ultimate) % nominal and statistical minimum value: 1) Obtained based on stress-strain curves. 2) Nominal values shall also be given for test
39、 temperatures -20 C and +80 C. f) compression strength (out of plane) MPa nominal and statistical minimum value: 1) Nominal values shall also be given for test temperatures -20 C and +80 C. g) compression modulus (out of plane) MPa nominal and statistical minimum value: 1) Nominal values shall also
40、be given for test temperatures -20 C and +80 C. h) tensile strength (out of plane) MPa nominal and statistical minimum value: 1) Nominal values shall also be given for test temperatures -20 C and +80 C. i) tensile modulus (out of plane) MPa nominal and statistical minimum value: 1) Nominal values sh
41、all also be given for test temperatures -20 C and +80 C. j) thickness mm: 1) The thickness is defined as the nominal thickness of the sheet. DIN EN 16245-5:2013-08 EN 16245-5:2013 (E) 7 2) The thickness shall be measured 50 mm from the corner with equal distance to the edges. 3) Guaranteed minimum a
42、nd maximum shall be given as maximum difference of highest and lowest measured value (regardless of the location) to the nominal value (may be given as % of the nominal value). k) in-plane length and width dimensions mm x mm: 1) The nominal length and width of the sheet/panel shall be given. 2) The
43、guaranteed minimum and maximum shall be given as: i) Maximum deviation from the nominal length: mm; ii) Maximum deviation from the nominal width: mm; iii) Maximum deviation from 90 at corners: degrees. l) thermal conductivity, W/(mK) nominal, minimum and maximum value; m) maximum continuous operatin
44、g temperature C nominal value: 1) Maximum temperature at which the unloaded material can be exposed in a period of three months with less than 10 % permanent degradation of the strength and module properties, both in shear and compression. The degradation shall be measured at room temperature and ac
45、cording to the test method standard used for static testing at ambient temperature (see Table 2). n) heat resistance C nominal value: 1) Heat resistance is defined as the material temperature at which the average strengths and module both in shear and compression have decreased by 20 % relative to t
46、he mean values obtained at the standard test temperature according to the relevant test method standard. 2) All four temperatures (strength related and modulus related for shear and compression) shall be given. 3) The test method is to be the same as for static testing at ambient temperature (see Ta
47、ble 1). o) maximum process temperature C nominal value: 1) The supplier shall give guidelines with respect to the maximum processing temperature. The maximum temperature during processing is the highest allowable temperature during a curing cycle for the sandwich. 2) Give at least one set of values
48、for temperature, pressure and time for such a process. p) core treatment/modification/assembly: 1) If a material is added to the surface of the core (coating/impregnation), the type and mass per square metre shall be given, including tolerances kg/m2 nominal, guaranteed minimum and maximum value. 2) If a core sheet is delivered with a carrier textile/scrim, the type of the carrier textile/scrim sh
