1、BRITISH STANDARD BS EN ISO 6186:1999 Plastics Determination of pourability The European Standard EN ISO6186:1998 has the status of a British Standard ICS 83.080.01BSENISO6186:1999 This British Standard, having been prepared under the directionof the Sector Committeefor Materials and Chemicals, was p
2、ublished underthe authority of the Standards Committee and comesinto effect on 15 March1999 BSI05-1999 ISBN 0 580 30739 5 National foreword This British Standard is the English language version of EN ISO 6186:1998. It is identical with ISO 6186:1998. The UK participation in its preparation was entru
3、sted to Technical Committee PRI/34, Vinyl materials, which has the responsibility 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 in
4、ternational 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 is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative refer
5、ences to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using th
6、e “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 Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from
7、 legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN ISOtitle page, page2, the ISO title page, pages ii to iv, pages1 to4, aninside back cover and a back cover. This standard has been updated (see copyright date) and may have had am
8、endments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSENISO6186:1999 BSI 05-1999 i Contents Page National foreword Inside front cover Foreword 2 Foreword iii Text of ISO6186 1ii blankEUROPEAN STANDA
9、RD NORME EUROPENNE EUROPISCHE NORM EN ISO 6186 June 1998 ICS 83.080.00 Descriptors: See ISO document English version Plastics Determination of pourability (ISO6186:1998) Plastiques Dtermination de laptitude lcoulement (ISO6186:1998) Kunststoffe Bestimmung der Rieselfhigkeit (ISO6186:1998) This Europ
10、ean Standard was approved by CEN on13 May1998. 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 standard without any alteration. Up-to-date lists and bibliographical references concerni
11、ng 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 language made by translation under the responsibility of a CEN member into its own lan
12、guage and notified to the Central Secretariat has the same status 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,
13、Switzerland and UnitedKingdom. 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 exploitation in any form and by any means reserved worldwide for CEN national Member
14、s. Ref. No. EN ISO6186:1998 EENISO6186:1998 BSI 05-1999 2 Foreword The text of the International Standard ISO6186:1998 has been prepared by Technical Committee ISO/TC1 “Plastics” in collaboration with Technical Committee CEN/TC249 “Plastics”, the secretariat of which is held by IBN. This European St
15、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December1998, and conflicting national standards shall be withdrawn at the latest by December1998. According to the CEN/CENELEC Internal Regulations, the national s
16、tandards 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, Switzerland and theUnitedKingdom. Endorsemen
17、t notice The text of the International Standard ISO6186:1998 was approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative).ENISO6186:1998 ii BSI05-1999 Contents Page Foreword iii 1 Scope 1 2 Normative refer
18、ence 1 3 Definition 1 4 Principle 1 5 Apparatus 1 6 Conditioning 1 7 Procedure 2 8 Expression of results 3 9 Precision 3 10 Test report 4 Annex ZA (normative) Normative references to international publications with their relevant European publications Inside back cover Figure 1 Test funnel 2 Table 1
19、 Funnel dimensions 1ENISO6186:1998 BSI 05-1999 iii 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. Eac
20、h 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 in the work. ISO collaborates closely with the Internation
21、al Electrotechnical Commission (IEC) 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 ca
22、sting a vote. International Standard ISO6186 was prepared by Technical Committee ISO/TC61, Plastics, Subcommittee SC9, Thermoplastic materials. This second edition cancels and replaces the first edition (ISO6186:1980), which has been technically revised. Descriptors: Plastics, powdery materials, gra
23、nular materials, thermoplastic resins, tests, pouring tests.iv blankENISO6186:1998 BSI 05-1999 1 1 Scope This International Standard specifies two methods, A and B, for determining the pourability of plastics in powdered and granular form by measuring the flow time through a funnel. From method A, i
24、nformation concerning the processability can be derived, whilst method B is especially designed for process control during manufacture. NOTEThe methods described are not applicable to all plastics in powdered and granular form. 2 Normative reference The following standard contains provisions which,
25、through reference in this text, constitute provisions 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 ap
26、plying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO291:1997, Plastics Standard atmospheres for conditioning and testing. 3 Definition For the purposes of this International Standard, the following d
27、efinition applies: 3.1 flow time the time taken for a defined mass or volume of test material to flow through a funnel of specified dimensions. It is indicated in seconds (s) 4 Principle The time taken for a defined mass or volume of the test material to flow through a funnel of specified dimensions
28、 is measured. 5 Apparatus 5.1 Funnel, of the shape and dimensions shown in Figure 1 and in Table 1. Simple test funnels or test funnels with exchangeable nozzles may be used. The funnel shall be made of metal, for example stainless steel, and have the inside surface carefully polished. It shall be f
29、itted with a device for closing the outlet (for example a metal plate). The funnel shall be earthed to discharge electrostatic charges. Table 1 Funnel dimensions 5.2 Funnel support, to hold the axis of the funnel vertically, for example a metal ring fixed to a vertical stand. 5.3 Stopwatch, accurate
30、 to0,1s, or an alternative means of measuring time with the same accuracy. 5.4 Balance, accurate to0,1g. 6 Conditioning Unless otherwise specified, materials shall be tested as received under ambient atmospheric conditions. If the test atmosphere can affect the results, it may be specified that the
31、sample be conditioned for24h at a temperature of 23C 1 C and(50 5)% relative humidity, as specified in ISO291, and tested in the same atmosphere. Dimensions in millimetres Diameter of outlet d Height of funnel h 10,00 0,05 15,00 0,05 25,00 0,05 140 133 120ENISO6186:1998 2 BSI 05-1999 7 Procedure 7.1
32、 General When using either method A or method B, start with d =10mm. If the sample does not flow through completely or does not flow at all, repeat the determination with d =15mm or d=25mm as necessary. 7.2 Method A Close the funnel outlet with the closing device. Pour150g1g of the sample into the f
33、unnel, pouring it on to the inside wall in order to prevent compaction. Remove the closing device rapidly, but without causing vibration, and simultaneously start the stopwatch. Stop the stopwatch when the funnel is empty, i.e.as soon as the funnel exit becomes visible when viewed from the top of th
34、e funnel. Read the flow time to the nearest0,1s. Figure 1 Test funnelENISO6186:1998 BSI 05-1999 3 Make three determinations under the same conditions, using a fresh test portion each time. After each determination, clean off any residue adhering to the inner surface of the funnel. If the material do
35、es not flow because of electrostatic charges, repeat the test with the addition of a suitable amount of an antistatic agent agreed between the interested parties and record in the test report that antistatic agent was added. 7.3 Method B Close the funnel outlet with the closing device. Pour sample i
36、nto the funnel, pouring it on to the inside wall in order to prevent compaction, until the funnel is overfull and then level off with a straight blade. Remove the closing device rapidly, but without causing vibration, and simultaneously start the stopwatch. Stop the stopwatch when the funnel is empt
37、y, i.e.as soon as the funnel exit becomes visible when viewed from the top of the funnel. Read the flow time to the nearest0,1s. Make three determinations under the same conditions, using a fresh test portion each time. After each determination, clean off any residue adhering to the inner surface of
38、 the funnel. If the material does not flow because of electrostatic charges, repeat the test with the addition of a suitable amount of an antistatic agent agreed between the interested parties and record in the test report that antistatic agent was added. 8 Expression of results Calculate the mean o
39、f the three determinations, expressing the flow time t, to the nearest whole second, in the way indicated by the following examples: t A10 =22S or t B15 =22S where A = method A B = method B 10 = 10 mm nozzle 15 = 15 mm nozzle Indicate the manner in which the material flows, using the following terms
40、: flows uniformly; flows intermittently; does not flow under the test conditions. 9 Precision The precision of test method A has been established by inter-laboratory testing, as follows: The precision of test method B should be similar, based on the fact that the procedure is similar in principle to
41、 that of method A and uses the same equipment. t A10for a standard suspension PVC resin Within laboratory: coefficient of variation=3,5% Between laboratories: coefficient of variation=5,0 t A15for a standard emulsion PVC resin Within laboratory: coefficient of variation=2,5% Between laboratories: co
42、efficient of variation=11,5% t A25for a standard emulsion PVC resin Within laboratory: coefficient of variation=4,0% Between laboratories: coefficient of variation=25%ENISO6186:1998 4 BSI 05-1999 10 Test report a) a reference to this International Standard and to the method used (A or B); b) all det
43、ails necessary for identification of the material tested; c) the individual results and their mean value, the manner in which the material flowed and the diameter of the funnel nozzle outlet; d) the type and amount of antistatic agent added, if applicable; e) the date of the test.ENISO6186:1998 BSI
44、05-1999 Annex ZA (normative) Normative references 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
45、and the publications are listed hereafter. For 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.
46、 Publication Year Title EN Year ISO291 1997 Plastics Standard atmospheres for conditioningand testing EN ISO291 1997BS EN ISO 6186:1999 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents
47、 the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to i
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