1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 175:2010Plastics Methods of testfor the determination of theeffects of immersion in liquidchemicalsBS EN ISO 175:2010 BRITISH STANDARDNational forewordThis British Stan
2、dard is the UK implementation of EN ISO 175:2010. Itsupersedes BS EN ISO 175:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/21, Testing of plastics.A list of organizations represented on this committee can beobtained on request to its secretar
3、y.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 69492 9ICS 83.080.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published u
4、nder the authority of theStandards Policy and Strategy Committee on 30 November 2010.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 175 October 2010 ICS 83.080.01 Supersedes EN ISO 175:2000English Version Plastics - Methods of test for t
5、he determination of the effects of immersion in liquid chemicals (ISO 175:2010) Plastiques - Mthodes dessai pour la dtermination des effets de limmersion dans des produits chimiques liquides (ISO 175:2010) Kunststoffe - Prfverfahren zur Bestimmung des Verhaltens gegen flssige Chemikalien (ISO 175:20
6、10) This European Standard was approved by CEN on 14 October 2010. 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 any alteration. Up-to-date lists and bibliographical
7、 references concerning such national standards may be obtained on application 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
8、 a CEN member into its own language and notified to the CEN-CENELEC Management 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, France, Germany, Greece, Hungar
9、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre:
10、 Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 175:2010: EBS EN ISO 175:2010EN ISO 175:2010 (E) 3 Foreword This document (EN ISO 175:2010) has been prepared by Technical Committee ISO/TC
11、 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat 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 April 2011, and conflicting
12、national standards shall be withdrawn at the latest by April 2011. Attention is drawn to 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. This document super
13、sedes EN ISO 175:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hu
14、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 175:2010 has been approved by CEN as a EN ISO 175:2010 without any modificat
15、ion. BS EN ISO 175:2010ISO 175:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Principle .2 4 General requirements and procedure .2 4.1 Test liquids.2 4.2 Test conditions 2 4.3 Immersion time 3 4.4 Test specimens3 4.5 Conditioning 4
16、 4.6 Procedure.4 4.7 Expression of results5 5 Determination of changes in mass, dimensions and appearance .6 5.1 General .6 5.2 Apparatus.6 5.3 Test specimens7 5.4 Determination of changes in mass8 5.5 Determination of changes in dimensions.10 5.6 Determination of changes in colour or other appearan
17、ce attributes.12 6 Determination of changes in other physical properties13 6.1 General .13 6.2 Apparatus.13 6.3 Test specimens13 6.4 Procedure.13 6.5 Calculation and expression of results 14 7 Precision 14 8 Test report15 Annex A (normative) Types of test liquid.16 Annex B (informative) Notes on the
18、 absorption of moisture by plastic specimens in equilibrium with a conditioning atmosphere 19 Bibliography20 BS EN ISO 175:2010ISO 175:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
19、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, govern
20、mental 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Di
21、rectives, Part 2. The main task of technical committees is to prepare International Standards. 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 b
22、odies casting a vote. Attention 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. ISO 175 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee S
23、C 6, Ageing, chemical and environmental resistance. This third edition cancels and replaces the second edition (ISO 175:1999), of which it constitutes a minor revision. BS EN ISO 175:2010ISO 175:2010(E) ISO 2010 All rights reserved vIntroduction Because of their varied applications, plastics are fre
24、quently brought into contact with liquids such as chemical products, motor fuels, lubricants, etc., and, possibly, with their vapours. Under the action of a liquid, a plastic material may be subjected to several phenomena which may occur simultaneously. On the one hand, absorption of liquid and extr
25、action of constituents soluble in the liquid may occur. On the other hand, a chemical reaction, often resulting in a significant change in the properties of the plastic, may occur. The equilibrium swelling ratio for a crosslinked polymer in a liquid that is a solvent for the same but non-crosslinked
26、 polymer is a measure of the degree of crosslinking. The behaviour of plastics in the presence of liquids can be determined only under arbitrarily fixed conditions aimed at making comparisons between different materials. The choice of test conditions (nature of the liquid, immersion temperature and
27、immersion time), as well as the choice of the properties in which changes are to be measured, depends on the eventual application of the plastic under test. It is not possible, however, to establish any direct correlation between the experimental results and the behaviour of the plastic in service.
28、These tests do, nevertheless, permit a comparison to be made of the behaviour of different plastic materials under specified conditions, thus allowing an initial evaluation of their behaviour in relation to certain groups of liquids. NOTE In view of its special importance, the particular case of the
29、 determination of the quantity of water absorbed is dealt with in ISO 62. ISO 175 is concerned with the effects of water only where changes in the dimensions and physical properties of the plastic occur as a result of the action of the water. BS EN ISO 175:2010BS EN ISO 175:2010INTERNATIONAL STANDAR
30、D ISO 175:2010(E) ISO 2010 All rights reserved 1Plastics Methods of test for the determination of the effects of immersion in liquid chemicals 1 Scope 1.1 This International Standard specifies a method of exposing test specimens of plastic materials, free from all external restraint, to liquid chemi
31、cals, and methods for determining the changes in properties resulting from such immersion. It does not cover environmental stress cracking (ESC) which is dealt with by the various parts of ISO 22088. 1.2 It only considers testing by immersion of the entire surface of the test specimen1). NOTE This m
32、ethod may not be appropriate for simulating partial or infrequent wetting of plastics. 1.3 It is applicable to all solid plastics that are available in the form of moulding or extrusion materials, plates, tubes, rods or sheets having a thickness greater than 0,1 mm. It is not applicable to cellular
33、materials. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 291:2008, P
34、lastics Standard atmospheres for conditioning and testing ISO 294-3, Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates ISO 2818, Plastics Preparation of test specimens by machining ISO 3126, Plastics piping systems Plastics components Determination of dime
35、nsions ISO 4582, Plastics Determination of changes in colour and variations in properties after exposure to daylight under glass, natural weathering or laboratory light sources IEC 60296, Fluids for electrotechnical applications Unused mineral insulating oils for transformers and switchgear 1) Altho
36、ugh it is not within the scope of this International Standard, it may also be of interest, when dealing with volatile liquids or those which give off vapours, to subject the specimen to only the gaseous phase above the liquid. In this event, it is advisable to proceed exactly as indicated, but to su
37、spend the specimen above the liquid, seal the container and maintain it at the test temperature throughout. BS EN ISO 175:2010ISO 175:2010(E) 2 ISO 2010 All rights reserved3 Principle Test specimens are completely immersed in a test liquid for a specified time and at a specified temperature. Their p
38、roperties are determined before immersion and after removal from the liquid, as well as after drying, if applicable. In the last-mentioned case, the determinations are made, if possible, one after the other on the same specimens. NOTE The comparison of different plastics by means of this test is val
39、id only if the specimens used are of the same shape, of the same dimensions (in particular of the same thickness) and in as nearly as possible the same state (of internal stress, surface, etc.). Methods are specified for determining the following: a) changes in mass, dimensions and appearance immedi
40、ately after removal from the liquid and after removal and drying; b) changes in physical properties (mechanical, thermal, optical, etc.) immediately after removal from the liquid and after removal and drying; c) the amount of liquid absorbed. Measurements are made immediately after removal when it i
41、s necessary to ascertain the state of the material while it is still being acted on by the liquid. Measurements are made after removal and drying when it is necessary to ascertain the state of the material after the liquid, provided it is volatile, has been eliminated. It also allows the influence o
42、f a soluble constituent to be determined. 4 General requirements and procedure 4.1 Test liquids 4.1.1 Choice of test liquid If information is required about the behaviour of a plastic in contact with a specific liquid, that liquid shall be used. The test liquid shall be of analytical quality. Indust
43、rial liquid chemicals are not generally of absolutely constant composition. The tests shall be carried out using defined chemical products, either on their own or as a mixture, which are as representative as possible of the products under consideration in their effect on the plastic material concern
44、ed. When technical-grade chemicals are used, they shall be of agreed origin and quality, and care shall be taken that only one manufacturing batch is used for all measurements in any one series. If conducting a series of tests in a liquid of doubtful composition, it is important to take all the samp
45、les of the liquid from the same container. 4.1.2 Types of test liquid Types of test liquid are given in Annex A. 4.2 Test conditions 4.2.1 Test temperatures The preferred test temperatures are: a) (23 2) C; b) (70 2) C. BS EN ISO 175:2010ISO 175:2010(E) ISO 2010 All rights reserved 3If a different t
46、emperature has to be used in order to correspond to the temperature at which the plastic is to be used, it shall be selected from one of the following temperatures: 269 C; 196 C; 161 C; 70 C; 55 C; 40 C; 25 C; 10 C; 0 C; 5 C; 25 C; 40 C; 55 C; 70 C; 85 C; 100 C; 105 C; 125 C; 150 C; 175 C; 200 C; 22
47、5 C; 250 C; 275 C; 300 C; 350 C; 400 C; 450 C; 500 C; 600 C; 700 C; 800 C; 900 C; 1 000 C NOTE These temperatures originate from ISO 3205:1976. The following temperatures are recommended: 0 C; 20 C; 27 C; 40 C; 55 C; 85 C; 95 C; 100 C; 125 C; 150 C with a tolerance of 2 C on temperatures up to and i
48、ncluding 100 C and 3 C on temperatures greater than 105 C up to and including 200 C. In the special case of testing plastic pipes, the temperature of 60 C given in the annex to ISO 3205:1976 may be used. In the event that the test is to be carried out at a temperature above normal ambient conditions
49、, it may be desirable to condition another series of specimens at this temperature for a period equal to that of the test, and to measure their properties after this conditioning in order to be able to distinguish the effect of temperature from that of the liquid. In the case of long-duration tests, specimens stored in air at 23 C may undergo a change in properties. Preparation of an additional series of test specimens is recommended for comparison purposes. 4.2.2 Mea
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