BS ISO 12013-2-2012 Paints and varnishes Determination of curing characteristics using a free damped oscillation method Glass transition temperature《涂料和清漆 采用自由阻尼振荡法测定固化特性 玻璃转换温度》.pdf
《BS ISO 12013-2-2012 Paints and varnishes Determination of curing characteristics using a free damped oscillation method Glass transition temperature《涂料和清漆 采用自由阻尼振荡法测定固化特性 玻璃转换温度》.pdf》由会员分享,可在线阅读,更多相关《BS ISO 12013-2-2012 Paints and varnishes Determination of curing characteristics using a free damped oscillation method Glass transition temperature《涂料和清漆 采用自由阻尼振荡法测定固化特性 玻璃转换温度》.pdf(22页珍藏版)》请在麦多课文档分享上搜索。
1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 12013-2:2012Paints and varnishes Determination of curingcharacteristics using a freedamped oscillation methodPart 2: Glass transition temperatureBS ISO 12013-2:2012 BRITIS
2、H STANDARDNational forewordThis British Standard is the UK implementation of ISO 12013-2:2012. The UK participation in its preparation was entrusted to T e c h n i c a l Committee STI/10, Test methods for paints.A list of organizations represented on this committee can be obtained on request to its
3、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 Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 66518 9 ICS 87.040 Compliance with a British Standard c
4、annot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 12013-2:2012 ISO 2012Paints and varnishes Determination of cur
5、ing characteristics using a free damped oscillation method Part 2: Glass transition temperaturePeintures et vernis Dtermination des caractristiques de polymrisation par une mthode utilisant un pendule amorti Partie 2: Temprature de transition vitreuseINTERNATIONAL STANDARDISO12013-2First edition2012
6、-10-15Reference numberISO 12013-2:2012(E)BS ISO 12013-2:2012ISO 12013-2:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mec
7、hanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.org
8、Published in SwitzerlandBS ISO 12013-2:2012ISO 12013-2:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references .13 Terms and definitions .14 Principle .25 Pendulum-damping apparatus 26 Sampling 67 Test panels 67.1 Substrate .67.2 Preparation and
9、coating 67.3 Thickness of coating 68 Procedure 69 Expression of results .710 Precision 710.1 General .710.2 Repeatability limit 810.3 Reproducibility limit.811 Test report .8Annex A (informative) Viscoelastic properties .9Bibliography .10BS ISO 12013-2:2012ISO 12013-2:2012(E)ForewordISO (the Interna
10、tional 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 has be
11、en 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 electrotechnical stan
12、dardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, 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
13、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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all s
14、uch patent rights.ISO 12013-2 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General tests methods for paints and varnishes.ISO 12013 consists of the following parts, under the general title Paints and varnishes Determination of curing characteristics using a
15、 free damped oscillation method: Part 1: Start temperature of the curing reaction Part 2: Glass transition temperatureiv ISO 2012 All rights reservedBS ISO 12013-2:2012ISO 12013-2:2012(E)IntroductionWhen a rigid-body pendulum with a cylindrical edge is placed in contact with a cured coating, the fre
16、e damped oscillation is measured as, due to heating, the viscoelasticity of the paint film changes. The attenuation of the oscillating rigid pendulum on the coating depends on the viscoelasticity of the paint. When the viscoelasticity of the paint changes, the logarithmic damping ratio of the rigid-
17、body pendulum changes. Various paint film properties can be read from a plot of the logarithmic damping ratio versus temperature (see Annex A). ISO 2012 All rights reserved vBS ISO 12013-2:2012BS ISO 12013-2:2012Paints and varnishes Determination of curing characteristics using a free damped oscilla
18、tion method Part 2: Glass transition temperature1 ScopeThis part of ISO 12013 specifies a free damped oscillation method for determining the glass transition temperature of dried and cured films of paints and varnishes.2 Normative referencesThe following referenced documents are indispensable for th
19、e 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 1513, Paints and varnishes Examination and preparation of test samplesISO 1514, Paints and varnishes Stan
20、dard panels for testingISO 2808, Paints and varnishes Determination of film thicknessISO 4618, Paints and varnishes Terms and definitionsISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling3 Terms and definitionsFor the purposes of this document, the terms and definitions
21、 given in ISO 4618 and the following apply.3.1glass transitionreversible change in an amorphous polymer or in amorphous regions of a partially crystalline polymer from (or to) a viscous or rubbery condition to (or from) a hard and relatively brittle oneISO 472:199913.2glass transition temperatureTga
22、pproximate midpoint of the temperature range over which the glass transition takes placeISO 472:19991NOTE 1 The rotational degrees of freedom of a polymer are excited at the glass transition temperature.NOTE 2 The glass transition temperature varies significantly, depending upon the adhesion to the
23、substrate of the cured coating film, as well as the test method and conditions selected to measure it.INTERNATIONAL STANDARD ISO 12013-2:2012(E) ISO 2012 All rights reserved 1BS ISO 12013-2:2012ISO 12013-2:2012(E)3.3glass transition temperature as determined by the pendulum methodTgpglass transition
24、 temperature of dried and cured paints and varnishes determined using a free damped oscillation methodNOTE The damping ratio is determined from the amplitude of oscillation of the pendulum and plotted against the temperature. The peak of the curve thus obtained is taken as the glass transition tempe
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