《BS-EN-ISO-8989-1998 BS-2782-4-METHOD-451T-1998.pdf》由会员分享，可在线阅读，更多相关《BS-EN-ISO-8989-1998 BS-2782-4-METHOD-451T-1998.pdf（12页珍藏版）》请在三一文库上搜索。
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 EN ISO 8989:1998 has the status of a British Standard ICS 83.080.10 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006
2、, Uncontrolled Copy, (c) BSI BS EN ISO 8989:1998 This British Standard, having been prepared 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 November 1998 BSI 05-1999 ISBN 0 580 30273 3 National
3、 foreword This British Standard is the English language version of EN ISO 8989:1998. It is identical with ISO 8989:1995. It supersedes BS EN ISO 8989:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/21, Testing of plastics, which has the respo
4、nsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries 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 l
5、ist of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European pu
6、blications. The British Standards 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 by using the “Find” facility of the BSI Standards Electronic
7、 Catalogue. A British Standard does not 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 documen
8、t comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, page ii, pages 1 and 2, an inside 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
9、the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8989:1998 BSI 05-1999i Contents Page National forewordInside front cover Forewo
10、rd2 Forewordii Text of ISO 89891 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE
11、 NORM EN ISO 8989 August 1998 ICS 83.080.10Supersedes EN ISO 8989:1995 Descriptors: See ISO document English version Plastics Liquid phenolic resins Determination of water miscibility (ISO 8989:1995) Plastiques Rsines phnoliques liquides Dtermination de la tolrance leau (ISO 8989:1995) Kunststoffe F
12、lssige Phenolharze Bestimmung der Wasserverdnnbarkeit (ISO 8989:1995) This European Standard was approved by CEN on 12 June 1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standa
13、rd without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other lan
14、guage made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
15、 Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of
16、 exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8989:1998 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8989:1998 BSI 05-1999 2 Foreword The text of the International Standar
17、d from Technical Committee ISO/TC 61 “Plastics” of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by IBN. This European Standard replaces EN ISO 8989:1995. This Europe
18、an Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 1999, and conflicting national standards shall be withdrawn at the latest by February 1999. According to the CEN/CENELEC Internal Regulations, the nat
19、ional standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
20、Endorsement notice The text of the International Standard ISO 8989:1995 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 Foreword2 1Scope1 2Normative references1 3Principle1
21、 4Reagent1 5Apparatus1 6Conditioning and test temperature1 7Procedure1 8Expression of results2 9Test report2 Annex ZA (normative) Normative references to international publications with their relevant European publicationsInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19
22、:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8989:1998 ii BSI 05-1999 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards
23、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 has the right to be represented on that committee. International organizat
24、ions, 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. Draft International Standards adopted by the technical committees are circul
25、ated 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 8989 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting materials. This second edi
26、tion cancels and replaces the first edition (ISO 8989:1988) which has been revised so that the test is carried out with grade 3 water as defined in ISO 3696 rather than distilled water. Descriptors: Plastics, resins, liquid resins, phenoplasts, tests, mixing tests, determination, mixing water. Licen
27、sed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8989:1998 BSI 05-19991 1 Scope This International Standard specifies a method for the determination of the miscibility of water with liquid phenolic resins. Water miscibility is dependent on
28、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. All standards a
29、re 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. ISO 385-1:198
30、4, Laboratory glassware Burettes Part 1: General requirements. ISO 385-2:1984, Laboratory glassware Burettes Part 2: Burettes for which no waiting time is specified. ISO 654:1980, Short solid-stem thermometers for precision use. ISO 3696:1987, Water for analytical laboratory use Specification and te
31、st 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 of 23 C 0,1 C. Water is added to the resin until turbidity persists for a minimum of 30 s after agitation. 4 Reagent Water, g
32、rade 3 as defined in ISO 3696. 5 Apparatus 5.1 Beaker, of capacity 100 ml, or a larger-capacity container, depending upon the degree of water miscibility (see 7.2, second paragraph). 5.2 Thermometer, short solid-stem type, range 19 C to 31 C, graduated in 0,1 C divisions: STC/0,1/19/31 in accordance
33、 with ISO 654 5.3 Magnetic stirrer 5.4 Burette, nominal capacity 50 ml, graduated in 0,1 ml divisions, conforming with the requirements of class A of ISO 385-1 and ISO 385-2. 5.5 Analytical balance, accurate to 0,01 g. 6 Conditioning and test temperature The determination shall be performed at 23 C
34、0,1 C. Prior to testing, the resin and grade 3 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
35、on the result of the preliminary determination (7.1), a test portion of 10 g to 50 g is chosen for the actual test. Weigh the test portion, to the nearest 0,01 g, into the 100 ml beaker (5.1). If the expected water miscibility (i.e. that determined in 7.1, if it was unknown) exceeds 900 % (m/m), use
36、 a container of larger volume. Verify, using the thermometer (5.2), that the temperature of the resin is 23 C 0,1 C. Place the beaker on the magnetic stirrer (5.3). By means of the burette (5.4), add grade 3 water, also preconditioned at 23 C 0,1 C, in accordance with the following procedure: the fi
37、rst addition shall be approximately 50 % of the quantity expected to be required to reach the miscibility limit (i.e. approximately 50 % of that determined in the preliminary test if the miscibility was unknown); subsequent additions shall be approximately 10 % of the quantity expected to be require
38、d, until turbidity occurs and vanishes again upon stirring; verify with the thermometer that the temperature of the mixture is 23 C 0,1 C, then resume the addition of water dropwise until the turbidity persists for at least 30 s. Record the volume (V ml) of water added. NOTE 1For some resins, it may
39、 be of interest to measure both the opalescent turbidity 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 V1 of water required to produce opalescent turbid
40、ity and the volume V2 required to produce opaque turbidity. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8989:1998 2 BSI 05-1999 8 Expression of results The miscibility of the resin with water WM, expressed as a percentage by mass,
41、 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 the following information: a) a reference to this International Standard; b) all details necessary for complete identification of the resin
42、 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 determined, as discussed in 7.2, note 1, there will be two results. Vis the volume, in millilitres, of water added (i.e. V g if it is assumed tha
43、t the density of water is 1 kg/l at 23 C); mis the mass, in grams, of the test portion. V m - -100 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8989:1998 BSI 05-1999 Annex ZA (normative) Normative references to international public
44、ations 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 dated references, subseque
45、nt 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. PublicationYearTitleENYear ISO 36961987Water for analytical laboratory u
46、se Specification and test methods EN ISO 36961995 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:19:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8989:1998 BS 2782-4: Method 451T:1998 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independe
47、nt national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they po
48、ssess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the ident
49、ity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI imp