1、BRITISH STANDARD BS EN ISO 8989:1998 BS 2782-4: Method 451T:1998 Plastics Liquid phenolic resins Determination of water miscibility The European Standard ENISO8989:1998 has the status of a British Standard ICS 83.080.10BSENISO8989:1998 This British Standard, having been prepared under the directiono
2、f the Sector Board forMaterials and Chemicals, waspublished under the authorityof the Standards Boardand comes into effect on 15 November 1998 BSI 05-1999 ISBN 0 580 30273 3 National foreword This British Standard is the English language version of ENISO8989:1998. It is identical with ISO8989:1995.
3、It supersedes BSENISO8989:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/21, Testing of plastics, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquirie
4、s 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 to its secretary. Cross-references Attention i
5、s drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be
6、 found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Stan
7、dards 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 front cover, pages i and ii, theENISO title page, page 2, the ISO title page, page ii,
8、pages 1 and 2, aninside back cover 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. Date CommentsBSENISO8989:1998 BSI 0
9、5-1999 i Contents Page National foreword Inside front cover Foreword 2 Foreword ii Text of ISO 8989 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8989 August 1998 ICS 83.080.10 Supersedes EN ISO 8989:1995 Descriptors: See ISO document English version Plastics Liquid phenolic resi
10、ns Determination of water miscibility (ISO 8989:1995) Plastiques Rsines phnoliques liquides Dtermination de la tolrance leau (ISO 8989:1995) Kunststoffe Flssige Phenolharze Bestimmung der Wasserverdnnbarkeit (ISO 8989:1995) This European Standard was approved by CEN on 12 June 1998. CEN members are
11、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 references concerning such national standards may be obtained on application to th
12、e Central Secretariat 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 a CEN member into its own language and notified to the Central Secretariat has the same stat
13、us as the official versions. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Stand
14、ardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8989:1998 EENISO8989:1998 BSI 05-1999 2 Fore
15、word The text of the International Standard from Technical Committee ISO/TC61 “Plastics” of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC249 “Plastics”, the secretariat of which is held by IBN. This European Standar
16、d replaces ENISO8989:1995. 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 February1999, and conflicting national standards shall be withdrawn at the latest by February1999. According to the CEN/C
17、ENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, S
18、witzerland and theUnitedKingdom. Endorsement notice The text of the International Standard ISO8989:1995 has been approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword 2 1 Scope 1
19、 2 Normative references 1 3 Principle 1 4 Reagent 1 5 Apparatus 1 6 Conditioning and test temperature 1 7 Procedure 1 8 Expression of results 2 9 Test report 2 Annex ZA (normative) Normative referencestointernational publications with theirrelevant European publications Inside back coverENISO8989:19
20、98 ii BSI 05-1999 Foreword ISO (the International 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 sub
21、ject 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 in the work. ISO collaborates closely with the International Electrotechnical Commission (I
22、EC) on all matters of electrotechnical standardization. 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 least75% of the member bodies casting a vote. International Stand
23、ard ISO8989 was prepared by Technical Committee ISO/TC61, Plastics, Subcommittee SC12, Thermosetting materials. This second edition cancels and replaces the first edition (ISO8989:1988) which has been revised so that the test is carried out with grade3 water as defined in ISO3696 rather than distill
24、ed water. Descriptors: Plastics, resins, liquid resins, phenoplasts, tests, mixing tests, determination, mixing water.ENISO8989:1998 BSI 05-1999 1 1 Scope This International Standard specifies a method for the determination of the miscibility of water with liquid phenolic resins. Water miscibility i
25、s dependent on the conditions and on the degree of condensation of the resin. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid.
26、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 editions of the standards listed below. Members of IEC and ISO maintain registers of currently valid International Standards
27、. ISO385-1:1984, Laboratory glassware Burettes Part1:General requirements. ISO 385-2:1984, Laboratory glassware Burettes Part2:Burettes for which no waiting time is specified. ISO654:1980, Short solid-stem thermometers for precision use. ISO 3696:1987, Water for analytical laboratory use Specificati
28、on and test methods. 3 Principle Determination of the percent by mass of water needed to obtain turbidity in the liquid phenolic resin. The determination is performed at a temperature of23C 0,1C. Water is added to the resin until turbidity persists for a minimum of30s after agitation. 4 Reagent Wate
29、r, grade3 as defined in ISO3696. 5 Apparatus 5.1 Beaker, of capacity100ml, or a larger-capacity container, depending upon the degree of water miscibility (see7.2, second paragraph). 5.2 Thermometer, short solid-stem type, range19C to31C, graduated in0,1C divisions: STC/0,1/19/31 in accordance with I
30、SO654 5.3 Magnetic stirrer 5.4 Burette, nominal capacity50ml, graduated in0,1ml divisions, conforming with the requirements of class A of ISO385-1 and ISO385-2. 5.5 Analytical balance, accurate to0,01g. 6 Conditioning and test temperature The determination shall be performed at23C 0,1C. Prior to tes
31、ting, the resin and grade3 water (clause 4) shall be conditioned at that temperature. 7 Procedure 7.1 Preliminary test When the water miscibility of the resin to be tested is unknown, a preliminary test shall be performed to determine its approximate value. 7.2 Actual test Based on the result of the
32、 preliminary determination (7.1), a test portion of10g to50g is chosen for the actual test. Weigh the test portion, to the nearest0,01 g, into the100ml beaker (5.1). If the expected water miscibility (i.e.that determined in 7.1, if it was unknown) exceeds900%(m/m), use a container of larger volume.
33、Verify, using the thermometer (5.2), that the temperature of the resin is23C 0,1C. Place the beaker on the magnetic stirrer (5.3). By means of the burette (5.4), add grade3 water, also preconditioned at23C 0,1C, in accordance with the following procedure: the first addition shall be approximately50%
34、 of the quantity expected to be required to reach the miscibility limit (i.e.approximately50% of that determined in the preliminary test if the miscibility was unknown); subsequent additions shall be approximately10% of the quantity expected to be required, until turbidity occurs and vanishes again
35、upon stirring; verify with the thermometer that the temperature of the mixture is23C 0,1C, then resume the addition of water dropwise until the turbidity persists for at least30s. Record the volume (V ml) of water added. NOTE 1For some resins, it may be of interest to measure both the opalescent tur
36、bidity and the opaque turbidity. (In the latter case, the mixture becomes milky or precipitation occurs.) If the opaque turbidity is also measured, it will be necessary to record separately the volume V 1of water required to produce opalescent turbidity and the volume V 2required to produce opaque t
37、urbidity.ENISO8989:1998 2 BSI 05-1999 8 Expression of results The miscibility of the resin with water WM, expressed as a percentage by mass, is given by the formula where NOTE 2It is also possible to express the results as the ratio 1 : x where x = WM/100. 9 Test report The test report shall include
38、 the following information: a) a reference to this International Standard; b) all details necessary for complete identification of the resin tested; c) the test result, calculated in accordance with clause 8; d) the date of the test. NOTE 3If both opalescent turbidity and opaque turbidity were deter
39、mined, as discussed in 7.2, note1, there will be two results. V is the volume, in millilitres, of water added (i.e. V g if it is assumed that the density of water is1kg/l at23C); m is the mass, in grams, of the test portion. V m -100 ENISO8989:1998 BSI 05-1999 Annex ZA (normative) Normative referenc
40、es to international publications with their relevant European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For
41、dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. Publication Year Title EN Year ISO 3696 1987 W
42、ater for analytical laboratory use Specification and test methods EN ISO 3696 1995BS EN ISO 8989:1998 BS2782-4: Method 451T:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK
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