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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 7322:2000 ICS 79.1
2、00 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Composition cork Test methods Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Committee f
3、or Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 July 2000 BSI 07-2000 ISBN 0 580 34997 7 BS ISO 7322:2000 Amendments issued since publication Amd. No.DateComments National foreword This British Standard reproduces verbatim ISO 7322
4、:2000 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PRI/81, Cork, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the inte
5、rpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards wh
6、ich implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not
7、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 comprises a front cover, an inside fro
8、nt cover, the ISO title page, pages ii to iv, pages 1 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number IS
9、O 7322:2000(E) INTERNATIONAL STANDARD ISO 7322 Second edition 2000-03-15 Composition cork Test methods Agglomr compos de lige Mthodes dessai Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7322:2000(E) ii? Licensed Copy: sheffieldun shef
10、fieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7322:2000(E) ?iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally ca
11、rried 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, governmental and non-governmental, in liaison with ISO, also take part in the work
12、. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical com
13、mittees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights.
14、 ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 7322 was prepared by Technical Committee ISO/TC 87,Cork. This second edition cancels and replaces the first edition (ISO 7322:1986). Technical changes have been introduced in the sampling and
15、 preparation of test specimens. The test method to evaluate the behaviour in boiling hydrochloric acid has been removed. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7322:2000(E) iv? Introduction Composition cork is a material obtaine
16、d by bonding cork granules with an adhesive. It may have different compositions and applications. The aim of this International Standard is to indicate general test methods in order to enable its minimum characterization. Specific test methods directly concerning composition cork performance in a sp
17、ecific application are stated in separate standards, in accordance with the intended use, e.g. ISO 3867 and ISO 4708. Composition cork of low thickness may be produced as such by direct compression or may be obtained either by reslicing blocks or by unwinding and cutting cylindrical rolls. Licensed
18、Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD?ISO 7322:2000(E) ?1 Composition cork Test methods 1?Scope This International Standard specifies test methods for the determination of the following characteristics of composition
19、cork: ?thickness, ?apparent density, ?tensile strength, ?compressibility and recovery, ?resistance to boiling water. This International Standard is applicable to the product in the form of sheets or rolls. 2?Normative reference The following normative document contains provisions which, through refe
20、rence in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, of this publication do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying t
21、he most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 2859-1,Sampling procedures for inspection by attribute
22、s Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection. 3?Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 composition cork agglomerated composition cork product obtained from the agglutinati
23、on of cork granules with the addition of a binder which is 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 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00
24、:00 2006, Uncontrolled Copy, (c) BSI ISO 7322:2000(E) 2? 4?Apparatus 4.1?Static load press, with flat parallel plates of dimensions greater than those of the test specimens to be tested, one fixed and other mobile to enable the load application at a constant rate, and equipped with the following ite
25、ms. 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. 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
26、load, having masses accurate to ? 1 %. 4.2?Tensile testing machine, with one fixed jaw and one mobile jaw 12 mm apart (to test composition cork) or 50,8 mm apart (to test rubbercork), with readings accurate to ? 1 N. The mobile jaw shall move unloaded at a speed of 300 mm/min. 4.3?Balance, capable o
27、f being read to ? 0,01 g. 4.4?Oven or climatic room, with temperature and humidity controls. 4.5?Vernier gauge, with a constant contact force, and capable of being read to ? 0,1 mm. 4.6?Metal ruler, capable of being read the nearest 1 mm. 4.7?Chronometer, capable of being read to the nearest 1 s. 4.
28、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 number of packages (at least three) and the quantity of material to be taken from the sample shall be in accordance with ISO 2859-1, for the inspe
29、ction 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 from the edges; each test specimen shall be squarely cut with the edges perpendicular to its surface, showing no cracks or folds
30、. 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 a relative humidity of (50 ? 5) % for 48 h. Unless otherwise specified, the tests shall be carried out under the same temperature a
31、nd humidity conditions. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7322:2000(E) ?3 Table 1 Dimensions and number of test specimens Test?Dimensions of test specimens mm Number of test specimens?Notes Thickness?100?50?5 Apparent densi
32、ty 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 perpendicular direction. Compressibility and recovery 50?50 (or circular
33、with diameter of 28,7 mm) 3 (single ply) 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 the indentor (4.1.1) without shock at the centre of the test specimen and ap
34、ply the mass defined in Table 2, in accordance with the type of composition cork concerned. After 15 s, read the thickness on the dial gauge (4.1.2). For test specimens with thicknesses greater than 10 mm, a vernier gauge (4.5) shall be used. 6.1.2?Calculation and expression of results The thickness
35、 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 the indentor mm Mass g Force N Pressure kPa Composition cork?28,7?450?4,4?6,8
36、 Rubbercork?12,8?450?4,4?34,3 6.2? Apparent density 6.2.1?Procedure Use the vernier gauge (4.5) or metal ruler (4.6) to determine the length and the width of each test specimen, in millimetres to the nearest 0,1 mm, and record the values obtained. Determine the mass of each test specimen to the near
37、est 0,1 g and record the values obtained. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7322:2000(E) 4? 6.2.2?Calculation and expression of results The apparent density of each test specimen, expressed in kilograms per cubic metre, is
38、given by the formula: m lbd? ?106 where m?is the mass of the test specimen, expressed in grams, 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, rounded to the
39、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 6.3.1?Proce
40、dure 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 new test
41、specimen. 6.3.2?Calculation and expression of results The tensile strength of each test specimen, expressed in kilopascals, is given by the formula: F bd? ?103 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, exp
42、ressed 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
43、ty and recovery 6.4.1?Procedure The dimensions of test specimens shall be as 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. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:26:31 GMT+00:00 2006
44、, Uncontrolled Copy, (c) BSI ISO 7322:2000(E) ?5 Determine the deflection 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 wi
45、th the test specimen. NOTE?The deflection in the testing apparatus may also be compensated for 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 mm Preload N Major l
46、oad N Total load N Total pressure kPa Agglomerated composition cork 28,7?4,5?400?445?700 Composition cork with cellular rubber 28,7?4,5?400?445?700 Rubbercork?12,8?4,5?351?355?2 750 Centre the test specimen on the base of the press (4.1) and apply the preload. Maintain this load for 15 s. Record the
47、 reading (d1) on the dial gauge under the action of the preload. Immediately and without 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 (d2) from the dial gauge. Immediately remove the major load.
48、After 60 s, read from the dial gauge the new thickness (d3) under the preload. 6.4.2?Calculation and expression of results The compressibility of each test specimen, expressed in percent, is given by the formula: dd d 12 1 100 ? ? The recovery of each test specimen, expressed in percent, is given by
49、 the formula: dd dd 32 12 100 ? ? ? where d1is the reading on the dial gauge for each test specimen under the preload, expressed in millimetres rounded to the nearest 0,1 mm; d2is the reading in the dial gauge, for each test specimen under total load, expressed in millimetres rounded to the nearest 0,1 mm; d3is the reading on the dial gauge, for each test specimen after recovery and under the preload, 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 per