1、 STD-BSI BS EN IS0 blb-ENGL 1999 W Lb24bb9 CI757987 BRITISH STANDARD Plastics - Determination of pourability The European Standard EN IS0 61861998 has the status of a British Standard ICs 83.080.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGH LAW 557 811 BS EN IS0 61861999 STD.B
2、S1 BS EN IS0 bLb-ENGL 1799 = Lb24bb9 0757488 473 been prepared under the direction of the Sector Amd No. Date Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 16 March 1999 O BSI 03-1999 ISBN O 580 30739 6 BS EN IS0 61861999
3、 Text affected National foreword This British Standard is the English language version of EN IS0 6186 1998. It is identical with IS0 6186:1998. The UK participation in its preparation was entnisted to Technical Committee PRIB4, Vinyl materials, which has the responsibility to: - aid enquirem to unde
4、mtand the te* - present to the responsible international/European committee any enquiries on the intepretation, or proposals for change, and keep the UK interests - monitor related international and European developments and promulgate informed; them in the UK. A list of organizations represented on
5、 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 nonnative references to international publications with their corresponding European publications. The British Standards w
6、hich implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “Internaional Standards Correspondence Index“, or by using the facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the
7、 necessary provisions of a conhct, 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 front cover, the EN IS0 title p
8、age, the EN IS0 foreword page, the IS0 title page, page ii, pages 1 to 5, the annex ZA page, an inside back cover and a back cover. EUROPEAN S“DARD NORME EUROPENNE EUROPISCHE NORM EN IS0 6186 June 1998 ICs 83.080.00 Descriptors: see IS0 document English version Plastics - Determination of pourabilit
9、y (IS0 61 86:1998) Plastiques - Dtermination de laptitude lcoulement (IS0 61 86: 1 998) Kunststoffe - Bestimmung der Rieselfhigkeii (IS0 61W1998) This European Standard was approved by CEN on 13 May 1998. CEN members are bound to comply with the CENKENELEC Intemal Regulauons which Cupulate the condi
10、tions for giving this European Sandard the staius of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on appcation to the Central Secretariat or to any CEN member. This European Standard exists in three off
11、icial 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 Centrai Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria,
12、 Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, My, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMlTEE EOR STANDARDiZAON COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FOR NORMUNG Central Secretarla
13、: rue de Stassart, 36 8-1050 Brusiel8 CB 1998 CEN All rights of exploitation in any form and by any means resewed worldwide for CEN national Members. Ref. No. EN IS0 6186:1998 E EN IS0 6186:1998 Foreword The text of the International Standard IS0 6186:1998 has been prepared by Technical Committee IS
14、O/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics, the secretariat of which is held by IBN. 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 December 1998, and confl
15、icting national standards shall be withdrawn at the latest by December 1998. According to the CENICENELEC Intemal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Ge
16、rmany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard IS0 6186:1998 was approved by CEN as a European Standard without any modification. NOTE Nonnative references
17、 to International Standards are listed in annex ZA (normative). - STD.BSI BS EN IS0 bLBb-ENGL 2999 S L62Ybb9 0757493 TBB 6 EN IS0 6186:1998 INTERNATIONAL STANDARD IS0 61 86 Second edition 1998-06-15 Plastics - Determination of pourability Plastiques - Detemination de laptitude lcoulement Reference n
18、umber IS0 6186:1998(E) STD-BSI BS EN IS0 blb-ENGL 1777 Lb2qbb7 0757472 7L4 EN IS0 6186:1998 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried
19、out through IS0 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 in the work. IS0
20、 collaborates closely with the International 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 appro
21、val by at least 75 % of the member bodies casting a vote. International Standard IS0 6186 was prepared by Technical Committee ISOTTC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. This second edition cancels and replaces the first edition (IS0 6186:1980), which has been technically revise
22、d. Descriptors: plastics, powdery materials, granular materials, thermoplastic resins, tests, pouring tests. ii EN IS0 6186:1998 Plastics - Determination of pourability 1 scope This International Standard specifies two methods, A and B, for determining the pourability of plastics in powdered and gra
23、nular form by measuring the flow time through a funnel. From method A, information concerning the processability can be derived, whilst method B is especially designed for process control during manufacture. NOTE - The methods described are not applicable to all plastics in powdered and granular for
24、m. 2 Normative reference The following standard contains provisions which, 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
25、 International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 291 :1997, Plastics - Standard atmospheres for conditioning and testing
26、. 3 Definition For the purposes of this Intemational Standard, the following definition 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
27、 or volume of the test material to flow through a funnel of specified dimensions 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 exampl
28、e stainless steel, and have the inside surface carefully polished. It shall be fitted with a device for closing the outlet (for example a metal plate). The funnel shall be earthed to discharge electrostatic charges. 1 STD-BSI BS EN IS0 bL8b-ENGL 1777 Lb24bbS 0757474 777 = Diameter of outlet d 10,OO
29、f 0,05 EN IS0 6186:1998 Height of funnel lh 140 Dimensions in millimetres I 2500 f 0,05 40 t5 0 110 120 40 t5 I 0 1o-;5 I 1- I a) Simple test funnel b) Test funnel with exchangeable nozzle Key 1 Polished 2 Union nut 3 Nozzle For values of d and h, see table 1. Figure 1 - Test funnel Table 1 - Funnel
30、 dimensions I 133 I 15,OO f 0,05 I 2 EN IS0 6186:1998 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 to 0,l s, or an altemative means of measuring time with the same accuracy. 5.4 Balance, accurate to 0,l g.
31、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 sample be conditioned for 24 h at a temperature of 23 OC I 1 “C and (50 f 5) % relative humidity, as spec
32、ified in IS0 291, and tested in the same atmosphere. 7 Procedure 7.1 General When using either method A or method B, start with d= 10 mm. If the sample does not flow through completely or does not flow at ail, repeat the determination with d = 15 mm or d = 25 mm as necessary. 7.2 Method A Close the
33、funnel outlet with the closing device. Pour 150 g f 1 g of the sample into the funnel, 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 empt
34、y, .e. as soon as the funnel exit becomes visible when viewed from the top of the funnel. Read the flow time to the nearest 0,l s. 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
35、of 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. 7.3 Method B Close the funnel outlet with
36、the closing device. Pour sample into 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
37、stopwatch when the funnel is empty, .e. as soon as the funnel exit becomes visible when viewed from the top of the funnel. Read the flow time to the nearest 0,l s. Make three determinations under the same conditions, using a fresh test portion each time. After each determination, clean off any resid
38、ue adhering to the inner surface of 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. 3 EN IS0
39、6186:1998 8 Expression of results Calculate the mean of the three determinations, expressing the flow time t, to the nearest whole second, in the way indicated by the following examples: tAl0 = 22 s or tS,S = 22 s where A = method A B = method B tQ = l mm nozzle 15 = 15 mm nozzle Indicate the manner
40、 in which the materiaf kws, using the folkwing terms: - flows uniformly; - flows intermittently; - does not fiow under the test conditions. 9 Precision The precision of test method A has been established by inter-laboratory testing, as follows: tAl0 for a standard suspension PVC resin Within laborat
41、ory: Between laboratories: coeff icient of variation = 3,5 % coefficient of variation = 5,O % tAis for a standard emulsion PVC resin Within laboratory: coefficient of variation = 2,5 % Between laboratories: coefficient of variation = 11,5 % tM5 for a standard emulsion PVC resin Within laboratory: Be
42、tween laboratories: coefficient of variation = 4,O % coefficient of variation = 25 % The precision of test method B should be similar, based on the fact that the procedure is similar in principle to that of method A and uses the same equipment. 4 STD-BSI BS EN IS0 bL8b-ENGL 1777 W lb24bb7 0757417 4T
43、b I EN IS0 6186:1998 10 Test report a) a reference to this International Standard and to the method used (A or B); b) all details 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 funne
44、l nozzle outlet; d) the type and amount of antistatic agent added, if applicable; e) the date of the test. 5 STDOBSI BS EN IS0 hLBb-ENGL 1797 LbZqhb9 U757L178 332 EN IS0 6186:1998 Annex ZA (normative) Normative references to international publications with their relevant European publications This E
45、uropean 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, subsequent amendments to or revisions of any of these publicati
46、ons 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 IS0 291 1997 Plastics - Standard atmospheres for EN IS0 291 1997 conditioning and testing S
47、TD-BSI BS EN IS0 bLBb-ENGL 1997 Lb24bb7 0757499 279 BS EN IS0 6186:1999 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the internation
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