BS-ISO-13651-1996.pdf
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1、BRITISH STANDARD BS ISO 13651:1996 Plastics Epoxy resins and related materials Determination of total saponifiable chlorine ICS 83.080.10 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 13651:1996 This British Standard, having been pr
2、epared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 March 1997 BSI 12-1998 ISBN 0 580 27223 0 National foreword This British Standard reproduces verbatim ISO 13651:1996 and implements it as t
3、he UK national standard. The UK participation in its preparation was entrusted to Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepegs, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any en
4、quiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request. Cross-references The British Standards
5、which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does n
6、ot 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 inside
7、front cover, the ISO title page, pages ii to iv, pages 1 to 3 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. Amendments issued since publication Amd. No.DateComme
8、nts Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 13651:1996 ii BSI 12-1998 Contents Page Forewordiii 1Scope1 2Normative refe
9、rence1 3Definition1 4Principle1 5Reagents1 6Apparatus2 7Procedure2 8Expression of results2 9Precision3 10Test report3 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 13651:1996 BSI 11-1998iii Foreword ISO (the International Organizati
10、on 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 been established ha
11、s 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 standardization. Draf
12、t 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 13651 was prepared by Technical Committee ISO/TC 6
13、1, Plastics, Subcommittee SC 12, Thermosetting materials. Descriptors: Plastics, epoxy resins, epoxy compounds, chemical analysis, determination of content, saponifiable matter, chlorine, potentiometric methods. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:26 GMT+00:00 2006, Uncontro
14、lled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:07:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 13651:1996 BSI 12-19981 1 Scope This International Standard specifies a method for the determination of the total saponifiable chlorine contained in epoxy res
15、ins and related materials. The amount of chlorine measured by the method, referred to as total saponifiable chlorine, includes saponifiable organic chlorine and inorganic chlorine. 2 Normative reference The following standard contains provisions which, through reference in this text, constitutes pro
16、visions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard
17、 indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 3696:1987, Water for analytical laboratory use Specification and test method. 3 Definition For the purposes of this International Standard, the following definition applies: 3.1 total saponifi
18、able chlorine content the ratio of the mass of all saponifiable organic and inorganic chlorine in a test portion of epoxy resin or related material to the mass of the test portion NOTE 1“Inorganic chlorine content” is defined in ISO 11376: 1), Plastics Epoxy resins and glycidyl esters Determination
19、of inorganic chlorine. 4 Principle A test portion is dissolved in diethylene glycol monobutyl ether and the solution saponified with an alcoholic solution of potassium hydroxide by heating under reflux. The total saponifiable chlorine content is then determined by potentiometric titration of the sol
20、ution with silver nitrate solution. 5 Reagents During the analysis, use only reagents of recognized analytical grade and only water of grade 3 purity as defined in ISO 3696. 5.1 Diethylene glycol monobutyl ether 5.2 1 mol/l solution of potassium hydroxide in 1,2- propanediol Dissolve 56 g of potassi
21、um hydroxide in 1,2-propanediol, make up to 1 litre with 1,2-propanediol and mix. 5.3 Glacial acetic acid 5.4 Acetone 5.5 Silver nitrate, 0,1 mol/l standard aqueous solution. 5.5.1 Preparation Dissolve 17,0 g of silver nitrate in water and dilute to 1 litre. 5.5.2 Standardization Weigh, to the neare
22、st 0,1 mg, 5,845 g of sodium chloride previously dried at 500 C to 600 C, dissolve it in water and make up to 1 litre to give a 0,1 mol/l solution. Pipette 5 ml of the sodium chloride solution into a 200 ml beaker (6.12) and add 100 ml of acetone (5.4) and 2 ml of glacial acetic acid (5.3). Then tit
23、rate the solution potentiometrically with the silver nitrate solution prepared in 5.5.1. Carry out a blank test in the same way. 5.5.3 Calculation of concentration Calculate the concentration c, in moles per litre, from the following equation, rounding the result to four places of decimals: where 5.
24、6 Silver nitrate, 0,01 mol/l standard aqueous solution. 5.6.1 Preparation Dissolve 1,70 g of silver nitrate in water and dilute to 1 litre. 1) To be published. mis the mass, in grams, of sodium chloride taken; V1is the volume, in millilitres, of silver nitrate solution required for the titration; V0
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