BS ISO 7322-2014 en_9062 Composition cork Test methods《合成软木.试验方法》.pdf

1、BSI Standards Publication BS ISO 7322:2014 Composition cork Test methodsBS ISO 7322:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 7322:2014. It supersedes BS ISO 7322:2000 which is withdrawn. The UK participation in its preparation was entrusted to Tec

2、hnical Committee PRI/81, Cork. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institut

3、ion 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 82096 0 ICS 79.100 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2014. Amendments

4、issued since publication Date Text affectedBS ISO 7322:2014 ISO 2014 Composition cork Test methods Agglomr compos de lige Mthodes dessai INTERNATIONAL STANDARD ISO 7322 Third edition 2014-10-15 Reference number ISO 7322:2014(E)BS ISO 7322:2014ISO 7322:2014(E)ii ISO 2014 All rights reserved COPYRIGHT

5、 PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission

6、. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 7322:2014

7、ISO 7322:2014(E) ISO 2014 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Apparatus . 1 5 Sampling and preparation of test specimens . 2 5.1 Sampling . 2 5.2 Preparation of test specimen 2 5.3 Conditioning 2 6 Tests . 3 6.1 Thickn

8、ess . 3 6.2 Apparent density . 3 6.3 Tensile strength 4 6.4 Compressibility and recovery 4 6.5 Resistance to boiling water 6 7 Test report . 6BS ISO 7322:2014ISO 7322:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO

9、 member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, gover

10、nmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further mainten

11、ance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attent

12、ion is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction

13、and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformi

14、ty assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 87, Cork. This third edition cancels and replaces the second edi

15、tion (ISO 7322:2000). Minor editorial details have been introduced in this edition.iv ISO 2014 All rights reservedBS ISO 7322:2014INTERNATIONAL ST ANDARD ISO 7322:2014(E) Composition cork Test methods 1 Scope This International Standard specifies test methods for the determination of the following c

16、haracteristics of composition cork: thickness, apparent density, tensile strength, compressibility and recovery, resistance to boiling water. This International Standard is applicable to the product in sheet or roll form. 2 Normative references The following documents, in whole or in part, are norma

17、tively referenced in this document and are indispensable 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. ISO 2859-1, Sampling procedures for inspection by attributes P

18、art 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection 3 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. 3.1 composition cork product obtained from the agglutination of cork granules with the addition of a bi

19、nder generally not derived from cork cells 3.2 rubbercork product manufactured as a compound of cork granules and rubber, which can be used either in the form of granules or as a binder 4 Apparatus 4.1 Static load press, with flat parallel plates of dimensions greater than those of the test specimen

20、s to be tested, one fixed and the other mobile to enable the load application at a constant rate, and equipped with the following items. 4.1.1 Cylindrical indentors, made of stainless steel having the following diameters: 28,7 mm, for testing composition cork, 12,8 mm, for testing rubbercork. ISO 20

21、14 All rights reserved 1BS ISO 7322:2014ISO 7322:2014(E) 4.1.2 Dial gauge, attached to the movable plate, capable of being read to the nearest 0,02 mm. 4.1.3 Weights, for adjusting the applied load, having masses accurate to 1 %. 4.2 Tensile testing machine, with one fixed jaw and one mobile jaw 12

22、mm apart (to test composition cork) or 50,8 mm apart (to test rubbercork), with readings are accurate to 1 N. The mobile jaw shall move unloaded at a speed of 300 mm/min. 4.3 Balance, with a resolution of 0,01 g. 4.4 Oven or climatic room, with temperature and humidity controls. 4.5 Vernier gauge, w

23、ith a constant contact force, and a resolution of 0,1 mm. 4.6 Metal ruler, with a resolution of 1 mm. 4.7 Chronometer with a resolution of 1 s. 4.8 Cutting system, to cut the test specimens. 4.9 Open container, for water. 5 Sampling and preparation of test specimens 5.1 Sampling From each lot, the n

24、umber of packages, at least three, and the quantity of material to be taken from the sample shall follow ISO 2859-1 for the inspection level agreed between parties. 5.2 Preparation of test specimen From each sheet of the material, cut the test specimens as indicated in Table 1, at least 100 mm away

25、from the edges. Each test specimen shall be squarely cut with the edges perpendicular to its surface, showing no cracks or folds. 5.3 Conditioning Test specimens shall be conditioned for 48 h at 23 C. In case of dispute, the test specimens shall be conditioned at a temperature of (23 2) C and (50 5)

26、 % of relative humidity, for 48 h. Unless otherwise specified, the tests shall be carried out at the same temperature and humidity conditions.2 ISO 2014 All rights reservedBS ISO 7322:2014ISO 7322:2014(E) Table 1 Dimensions and number of test specimens Test Dimensions of test specimens mm Number of

27、test specimens Notes Thickness 100 50 5 Apparent den- sity 100 50 5 The test specimens for the thickness test may be used. Tensile strength 100 50 3 If the composition cork was produced in rolls, take 3 test specimens in the direction of the compression plus 3 test specimens in the perpendicu- lar d

28、irection. Compressibility and recovery 50 50 or circular with = 28,7 3 test specimens (in the case of single sampling) or 3 groups of n test specimens Resistance to boiling water 50 50 3 6 Tests 6.1 Thickness 6.1.1 Procedure Place one test specimen on the fixed plate of the static press (4.1). Apply

29、 the indentor (4.1.1) without shock at the centre of the test specimen and apply the mass defined in Table 2, in accordance with the type of composition cork concerned. After 15 s, read the thickness in the dial gauge (4.1.2). For test specimens with thicknesses greater than 10 mm, a Vernier gauge (

30、4.5) shall be used. 6.1.2 Calculation and expression of results The thickness of the sample is the average of the results obtained for each test specimen. Express the results in millimetres, rounded off to the nearest 0,1 mm. Table 2 Applied masses for the thickness measurement Material Diameter of

31、the indentor Mass Force Pressure mm g N kPa composition cork 28,7 450 4,4 6,8 rubbercork 12,8 450 4,4 34,3 6.2 Apparent density 6.2.1 Procedure Use the Vernier gauge (4.5) or a metal ruler (4.6) to determine the length and the width of each test specimen, in millimetres, to the nearest 0,1 mm and re

32、cord the values obtained. Determine the mass of each test specimen to the nearest 0,1 g and record the values obtained. ISO 2014 All rights reserved 3BS ISO 7322:2014ISO 7322:2014(E) 6.2.2 Calculation and expression of results The apparent density of each test specimen, expressed in kilograms per cu

33、bic metre, is given by the Formula (1): (1) where m is the mass of the test specimen, expressed in gram, rounded to the nearest 0,1 g; l is the length of the test specimen, expressed in millimetres, rounded to the nearest integer; b is the width of the test specimen, expressed in millimetres, rounde

34、d to the nearest integer; d is the thickness of the test specimen, obtained from 6.1, expressed in millimetres, rounded to the nearest 0,1 mm. The apparent density of the sample is the average of the results obtained for each test specimen rounded off to the nearest integer. 6.3 Tensile strength 6.3

35、.1 Procedure Clamp one test specimen in the machine jaws so that the force is exerted on the length of the test specimen. Set the machine in operation and record the force (F) at which rupture occurs. Any test specimen for which rupture occurs at the jaw level shall be eliminated and replaced by a n

36、ew test specimen. 6.3.2 Calculation and expression of results The tensile strength of each test specimen, expressed in kilopascals, is given by Formula (2): (2) where F is the force at which rupture occurs, expressed in newtons, rounded to the nearest integer; b is the width of the test specimen, ex

37、pressed in millimetres, rounded to the nearest integer; d is the thickness of the test specimen, expressed in millimetres, rounded to the nearest 0,1 mm. The tensile strength of the sample is the average of the results obtained for each test specimen rounded to the nearest integer. 6.4 Compressibili

38、ty and recovery 6.4.1 Procedure The dimensions of test specimens are specified in Table 1. Test specimens shall consist in a single ply or a number of superimposed plies to give a minimum test thickness of 3,2 mm.4 ISO 2014 All rights reservedBS ISO 7322:2014ISO 7322:2014(E) Determine the deflection

39、 of the indentor for each load specified in Table 3 without any test specimen. Subtract any measurable value occurring on the static press from the thickness under total load. This value shall be subtracted from the readings with the test specimen. NOTE The deflection in the testing apparatus can al

40、so be compensated by setting the dial gauge on the negative side of zero at a reading equal to the deflection. Table 3 Applied loads and corresponding pressures Type of material Diameter of the indentor Preload Major load Total load Total pressure mm N N N kPa composition cork 28,7 4,5 440 445 700 c

41、omposition cork with cel- lular rubber 28,7 4,5 440 445 700 rubbercork 12,8 4,5 351 355 2750 Centre the test specimen on the base of the press ( 4.1) and apply the preload; maintain this load for 15 s. Record the reading (d 1 ) in the dial gauge under the action of the preload. Immediately and witho

42、ut shock, apply the major load so that the total load is reached in 10 s; maintain the total load for 60 s and record the thickness of the test specimen (d 2 ) in the dial gauge. Immediately remove the major load. After 60 s read the new thickness (d 3 ) under the preload. 6.4.2 Calculation and expr

43、ession of results The compressibility of each test specimen, expressed in percentage, is given by Formula (3): dd d (3) The recovery of each test specimen, expressed in percentage, is given by Formula (4): dd dd (4) where d 1 is the reading in the dial gauge, for each test specimen under the preload

44、, expressed in mil- limetres, rounded to the nearest 0,1 mm; d 2 is the reading in the dial gauge, for each test specimen under total load, expressed in millime- tres, rounded to the nearest 0,1 mm; d 3 is the reading in the dial gauge, for each test specimen after the recovery and under the preload

45、, expressed in millimetres, rounded to the nearest 0,1 mm. The test result is the average of the results obtained for each test specimen, expressed in percentage rounded to the nearest integer. ISO 2014 All rights reserved 5BS ISO 7322:2014ISO 7322:2014(E) 6.5 Resistance to boiling water 6.5.1 Proce

46、dure Boil the water in a container (4.9). Place the test specimens and keep the water boiling for 3 h. Remove the test specimens and make their visual examination. 6.5.2 Expression of result Express the test results by stating the existence or absence of disaggregation 1)of the sample. 7 Test report

47、 The test report shall include the following information: a) reference to this International Standard, i.e. ISO 7322; b) the complete identification of the product tested, including the type, source and the manufacturers references; c) sampling report; d) results obtained; e) any deviation from this

48、 International Standard that may have affected the results. 1) A test specimen is said to disaggregate if it splits open and/or if it shows substantial loss of particles during the test.6 ISO 2014 All rights reservedBS ISO 7322:2014BS ISO 7322:2014ISO 7322:2014(E) ISO 2014 All rights reserved IC S 7

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