1、 IEC TS 62073 Edition 2.0 2016-02 TECHNICA L SPECIFICA TION Guidance on the measurement of hy drophobicity of insulator surfaces IEC TS 62073:2016-02(en)Copyright International Electrotechnical Commission THIS PUBLICATION IS COPYRIGHT PROTECTED Copyr ight 2016 IEC,Geneva,Switzer land All r ights r e
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11、y of insulator surfaces INTER NATIONA L ELECTROTECHNICA L COMMISSION ICS 29.080.10 ISBN 978-2-8322-3169-2 Registered t rademark of t he Int ernational Electrot echnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.Copyright International Electrotechn
12、ical Commission 2 IEC TS 62073:2016 IEC 2016 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Terms and def initions.7 3 Methods f or measurement of hydrophobic properties.9 3.1 General.9 3.2 Method A Contact angle method.9 3.2.1 General.9 3.2.2 Equipment.9 3.2.3 Measurement procedure.9 3.2.4 Static c
13、ontact angle measurements.10 3.2.5 Dynamic contact angle measurements.10 3.2.6 Evaluation.10 3.3 Method B Surf ace tension method.11 3.3.1 General.11 3.3.2 Saf ety precautions.11 3.3.3 Equipment and reagents.11 3.3.4 Measurement procedure.12 3.3.5 Evaluation.12 3.4 Method C The spray method.12 3.4.1
14、 General.12 3.4.2 Equipment.12 3.4.3 Measurement procedure.13 3.4.4 Evaluation.13 3.5 Documentation.14 Annex A(normative)Guidelines regarding the applicability and comments on the limitations of the dif f erent methods described in this technical specif ication.15 A.1 General.15 A.2 Typical results
15、obtained with the three methods.15 Annex B(normative)Method A Contact angle method.17 Annex C(normative)Method B Surf ace tension method.18 Annex D(normative)Method C Spray method.20 Figure 1 Def inition of the static contact angle.8 Figure 2 Def inition of the advancing angle(a)and the receding ang
16、le(r)inside a liquid drop resting on an inclined solid surf ace.8 Figure 3 Measurements of the advancing angle(a)and the receding angle(r)by adding or withdrawing water f rom a droplet.10 Figure B.1 Measurement of the advancing angle(a)and the receding angle(r)by using the captive bubble technique.17 Figure D.1 Examples of surf aces with hydrophobicity class(HC)f rom 1 to 6.20 Table 1 Criteria f or the determination of hydrophobicity class(HC).14 Copyright International Electrotechnical Commissi
