BS ISO 124-2014 Latex rubber Determination of total solids content《乳胶 橡胶 总固体含量的测定》.pdf
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1、BSI Standards PublicationBS ISO 124:2014Latex, rubber Determinationof total solids contentBS ISO 124:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 124:2014. Itsupersedes BS ISO 124:2011 which is withdrawn.The UK participation in its preparation was entru
2、sted to TechnicalCommittee PRI/50, Rubber - Raw, natural and synthetic, includinglatex and carbon black.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are r
3、esponsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 80286 7ICS 83.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStanda
4、rds Policy and Strategy Committee on 31 March 2014.Amendments issued since publicationDate Text affectedBS ISO 124:2014 ISO 2014Latex, rubber Determination of total solids contentLatex de caoutchouc Dtermination des matires solides totalesINTERNATIONAL STANDARDISO124Seventh edition2014-03-15Referenc
5、e numberISO 124:2014(E)BS ISO 124:2014ISO 124:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, includi
6、ng photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested 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 74
7、9 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 124:2014ISO 124:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Principle 14 Apparatus . 15 Sampling 16 Procedure. 26.1 General . 26.2 Heating at atmospheric pressure (70
8、C and 105 C) Natural and synthetic rubber latex 26.3 Heating at atmospheric pressure (up to 160 C) Synthetic rubber latex 26.4 Heating at reduced pressure Synthetic rubber latex 27 Expression of results 38 Precision . 39 Test report . 3Annex A (informative) Drying conditions for synthetic latices at
9、 atmospheric pressure 4Annex B (informative) Precision statement 5Bibliography 8BS ISO 124:2014ISO 124:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is
10、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, governmental and non-governmental, in liaison with ISO, also take part
11、in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular
12、 the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this d
13、ocument may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso
14、.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WT
15、O principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry.This seventh editio
16、n cancels and replaces the sixth edition (ISO 124:2011) which has been technically revised to introduce the following modifications: the introduction has been deleted; the scope has been extended to cover field latex; Subclause 6.1 now states the preferred method in case of dispute; the precision da
17、ta in Annex B have been updated to cover field latex.iv ISO 2014 All rights reservedBS ISO 124:2014INTERNATIONAL STANDARD ISO 124:2014(E)Latex, rubber Determination of total solids contentWARNING Persons using this International Standard should be familiar with normal laboratory practice. This Inter
18、national 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 ScopeThis International Standard spe
19、cifies methods for the determination of the total solids content of natural rubber field and concentrated latices and synthetic rubber latex. These methods are not necessarily suitable for latex from natural sources other than the Hevea brasiliensis, for vulcanized latex, for compounded latex, or fo
20、r artificial dispersions of rubber.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the refere
21、nced document (including any amendments) applies.ISO 123, Rubber latex Sampling3 PrincipleA test portion of the latex is dried to constant mass under specified conditions, either at atmospheric pressure or under vacuum. The total solids content is determined by weighing before and after drying to co
22、nstant mass.NOTE The determination of the residue after drying for a specific period of time is the subject of ISO 3251.14 ApparatusUsual laboratory equipment, and in particular, the following.4.1 Flat-bottomed dishes, lipless, of diameter approximately 60 mm.4.2 Ovens, capable of being maintained a
23、t 70 C 5 C, 105 C 5 C, or at another selected temperature between 100 C and 160 C accurate to 5 C.4.3 Vacuum oven, capable of being maintained at 125 C 2 C and at a pressure below 20 kPa1).4.4 Analytical balance, capable of being read to 0,1 mg.5 SamplingCarry out sampling in accordance with one of
24、the methods specified in ISO 123.1) 1 kPa = 1 kN/m2. ISO 2014 All rights reserved 1BS ISO 124:2014ISO 124:2014(E)6 Procedure6.1 GeneralFor natural rubber latex, proceed in accordance with 6.2; and for synthetic rubber latex proceed in accordance with 6.2, 6.3, or 6.4. Perform the determination in du
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