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1、BRITISH STANDARD BS EN ISO 11758:1997 Incorporating Amendment No. 1 to BS ISO 11758:1995 (renumbers the BS as BS EN ISO 11758: 1997) and Amendment No. 1 to BS EN ISO 11758: 1997 Rubber and plastics hoses Exposure to a xenon arc lamp Determination of changes in colour and appearance The European Stan
2、dard EN ISO 11758:1997 has the status of a British Standard ICS 23.040.70 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11758:1997 This British Standard, having been prepared under the direction of the Sector Board for Materials
3、and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 March 1996 BSI 04-2000 The following BSI references relate to the work on this standard: Committee reference PRI/66 Draft for comment 92/38828 DC ISBN 0 580 25558 1 Committees responsible for this Bri
4、tish Standard The preparation of this British Standard was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies, upon which the following bodies were represented: Association of Metropolitan Authorities British Coal Corporation British Compressed Gases Assoc
5、iation British Rubber Manufacturers Association Ltd. Chief and Assistant Chief Fire Officers Association Energy Industries Council Fire Extinguishing Trades Association Home Office London Fire and Civil Defence Authority Ministry of Defence RAPRA Technology Ltd. Society of Motor Manufacturers and Tr
6、aders Limited The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Fluid Power Association Amendments issued since publication Amd. No.DateComments 9708December 1997 10338July 1999Indicated by a sideline in the margin Licensed Copy: sh
7、effieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11758:1997 BSI 04-2000i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Forewordiii Text of ISO 117581 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09
8、:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11758:1997 ii BSI 04-2000 National foreword This British Standard has been prepared by Technical Committee PRI/66 and is the English language version of EN ISO 11758:1997 Rubber and plastics hoses Exposure to a xenon arc lamp Determination of
9、changes in colour and appearance, including its Corrigendum September 1998, published by the European Committee for Standardization (CEN). It is identical with ISO 11758:1995, including Corrigendum 1 1998, published by the International Organization for Standardization (ISO). A British Standard does
10、 not 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 insid
11、e front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, pages ii to iv, pages 1 to 8 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Lice
12、nsed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11758 May 1997 ICS 23.040.70Incorporates Corrigendum September 1998 Descriptors: See ISO document English version Rubber and plastics hoses
13、Exposure to a xenon arc lamp Determination of changes in colour and appearance (ISO 11758:1995) Tuyaux en caoutchouc et en plastique Exposition la lampe arc au xnon Dtermination du changement de coloration et daspect (ISO 11758:1995) Gummi- und Kunststoffschluche Bestrahlung mit Xenonbogenlampe Best
14、immung der nderungen von Farbe und Aussehen (ISO 11758:1995) This European Standard was approved by CEN on 1997-04-21. CEN 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
15、any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made
16、by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, L
17、uxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form a
18、nd by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11758:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11758:1997 BSI 04-2000 2 Foreword The text of the International Standard from Technical Committe
19、e ISO/TC 45, Rubber and rubber products, of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC 218, Rubber and plastics hoses and hose assemblies, the Secretariat of which is held by BSI. This European Standard shall be g
20、iven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 1997, and conflicting national standards shall be withdrawn at the latest by November 1997. According to CEN/CENELEC Internal Regulations, the following countries are bound
21、 to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Un
22、controlled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11758:1995(E) ii BSI 04-2000 Contents Page Forewordiii Introduction1 1Scope1 2Normative references1 3Principle1 4Apparatus1 4.1Laboratory light source1 4.2Test encl
23、osure2 4.3Black-standard thermometer2 4.4Relative-humidity measuring device3 4.5Water-spraying3 4.6Test-piece holders3 4.7Equipment for determining the level of exposure3 5Test pieces4 6Procedure4 6.1Mounting the test pieces4 6.2Exposure of references and test pieces4 6.3Measuring the level of expos
24、ure4 6.3.1Using instruments4 6.3.2Using blue-wool references4 6.3.3Using other physical references4 6.3.4General considerations4 6.4Test conditions4 6.5Removal and inspection4 7Expression of results5 7.1Colour change5 7.2Cracking5 8Test report5 Annex A (normative) Protection of operators6 Annex B (n
25、ormative) Water-spraying device6 Annex C (normative) Use of blue-wool references to measure exposure level7 Annex ZA (normative) Normative references to international publications with their relevant European publications8 Table 1 Relative spectral irradiance for artifical weathering (method A)2 Tab
26、le 2 Relative spectral irradiance for daylight behind window glass (method B)2 Table B.1 Dry and spraying periods6 Table C.1 Exposure stages7 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11758:1995(E) BSI 04-2000iii Foreword ISO (the
27、International Organization for Standardization) is a worldwide federation of national standards bodies (ISO 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
28、 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. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnic
29、al standardization. Draft International Standards adopted by the technical committees 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. International Standard ISO 11758 was prepared by Tech
30、nical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Hoses (rubber and plastics). Annex A, Annex B and Annex C form an integral part of this International Standard. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blan
31、k Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11758:1995(E) BSI 04-20001 Introduction Measuring the effect of a light source on hoses is of value as a means of inspecting the conservation of the colour, which is often indicative, and
32、 the integrity of the coating material that protects the components making up the hose. Accordingly, this International Standard pursues a threefold aim: a) to carry out accelerated artificial ageing using existing material, with a source approximating as closely as possible to natural light; b) to
33、measure the effects of this light source on hoses; c) to set a limit on deterioration, by agreement between the manufacturer and the user. A related International Standard is ISO 8580:1987, Rubber and plastics hoses Determination of ultra-violet resistance under static conditions, which refers only
34、to fluorescent lights. The only other International Standard in this field, ISO 4665-3:1987, Rubber, vulcanized Resistance to weathering Part 3: Methods of exposure to artificial light, is not specific to hoses. WARNING Persons using this International Standard should be familiar with normal laborat
35、ory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope This International
36、Standard specifies a method for exposing rubber and plastics hoses to a laboratory light source for the purpose of evaluating the changes in colour and appearance produced by such exposure. NOTE 1A xenon arc was chosen from among a variety of sources since, when correctly filtered and maintained, it
37、 yields a spectrum closely similar to that of daylight. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subj
38、ect to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 105-A02:1993,
39、 Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour. ISO 105-B01:1994, Textiles Tests for colour fastness Part B01: Colour fastness to light: Daylight. ISO 4665-1:1985, Rubber, vulcanized Resistance to weathering Part 1: Assessment of changes in properties after e
40、xposure to natural weathering or artificial light. ISO 4665-3:1987, Rubber, vulcanized Resistance to weathering Part 3: Methods of exposure to artificial light. CIE Publication No. 85:1989, Solar spectral irradiance.1). 3 Principle Sections of rubber or plastic hose are exposed, without stress and i
41、n a defined environment, to radiation from a xenon lamp for a predetermined period and inspected in order to assess visually any change in colour and appearance. NOTE 2Other exposure conditions may be used and other parameters assessed, provided they are defined by agreement between the producer and
42、 the user. 4 Apparatus 4.1 Laboratory light source 4.1.1 Quartz-jacketed xenon arc lamps emit radiation in a range which extends from below 270 nm in the ultraviolet through the visible spectrum and into the infrared. For simulation of direct natural exposure, the radiant energy shall be filtered to
43、 provide a spectral power distribution that closely approximates to that of terrestrial daylight (method A) as described in CIE Publication No. 85:1989. 1) Published by the International Commission on Illumination, Central Bureau, P.O. Box 169, A-1033 Vienna, Austria. Licensed Copy: sheffieldun shef
44、fieldun, na, Sat Nov 18 16:09:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 11758:1995(E) 2 BSI 04-2000 Filters to reduce the irradiance at wavelengths below 320 nm shall be used when simulating daylight filtered through window glass (method B). Filters to reduce non-actinic infrared energy may
45、be desirable when heating of the specimen adversely influences the photochemical reaction rate or causes thermal degradation not experienced during real-time direct natural exposure. The characteristics of xenon arcs and filters are subject to change in use due to ageing, and they shall be replaced
46、at appropriate intervals. Further, they are subject to change due to the accumulation of dirt, and they shall be cleaned at appropriate intervals. Replacement and cleaning shall be carried out in accordance with the manufacturers or suppliers instructions. 4.1.2 Recommendations on the wavelength dis
47、tribution of UV radiation from filtered xenon arc sources, together with tolerance limits, are given in Table 1 for artificial weathering (method A) and Table 2 for simulated exposure to daylight behind window glass (method B). Table 1 Relative spectral irradiance for artificial weathering (method A
48、) Table 2 Relative spectral irradiance for daylight behind window glass (method B) 4.1.3 For reference purposes, an irradiance in the passband 280 nm to 800 nm of 550 W/m2 has been selected (see CIE Publication No. 85:1989). It is not necessarily the preferred irradiance. When mutually agreed upon,
49、another irradiance may be selected. Report the irradiance and the passband selected. 4.1.4 The irradiance at any point on the surface of the test piece shall not vary by more than 10 % compared to any other point in the test-piece holder plane along a line parallel to the axis of the light source. NOTE 3Depending on the test enclosure (4.2), this requirement on the spectral irradiance may be considered to apply to time-averaged values. 4.2 Test enclosure The test enclosure shall contain a rack desi
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