1、BRITISH STANDARD Plastics Vinyl chloride homopolymer and copolymer resins Sieve analysis using air-j et sieve apparatus The European Standard EN IS0 4610:2001 has the status ofa British Standard ICs 83.080.20; 19.120 BS EN IS0 4610:2001 Incorporating Corrigendum No. I Wk present to the responsible i
2、nternational/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 list of organizations represented on this committee can be obtained on request
3、to its secretary. Cr oss-r e fer enc e s 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
4、 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 legal obligations.
5、Summary of pages This document comprises a front cover, an inside front cover, the EN IS0 title page, the EN IS0 foreword page, the IS0 title page, pages ii to iv, pages 1 to 4, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was l
6、ast issued. O BSI 15 March 2002 ISBN O 580 38730 5 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 4610 October 2001 ICs 83.080.20 Supersedes EN IS0 461 0:1997 English version Plastics - Vinyl chloride homopolymer and copolymer resins - Sieve analysis using air-jet sieve apparatus (IS0 461
7、0:2001) Plastiques - Rsines dhomopolymres et copolymres de chlorure de vinyle - Analyse granulomtrique sur tamiseuse dpression dair (IS0 4610:2001) Kunststoffe - Vinylchlorid-Homo- und Copolymerisate - Siebanalyse mit der Luftstrahl-Siebmaschine (IS0 4610:2001) This European Standard was approved by
8、 CEN on 4 October 2001 CEN members are bound to comply with the CENKENELEC 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 standard
9、s may be obtained on application to the Management Centre 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 M
10、anagement Centre 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingd
11、om. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN IS0 4610:2001 E
12、EN IS0 4610:2001 I CORRECTED 2002-02-06 I Foreword The text of the International Standard from Technical Committee ISO/TC 61 “Plastics“ of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC 249 “Plastics“, the secretariat
13、 of which is held by IBN. This document supersedes EN IS0 461 0:1997 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 April 2002, and conflicting national standards shall be withdrawn at the latest
14、 by April 2002. According to the CENKENELEC Internal Regulations, the national 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, Netherlan
15、ds, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard IS0 4610:2001 has been approved by CEN as a European Standard without any modifications. EN IS0 4610:2001 I NTE RNATI O NAL STANDARD IS0 461 O Second edition 2001-1 0-15
16、 Plastics - Vinyl chloride homopolymer and copolymer resins - Sieve analysis using air-jet sieve apparatus Plastiques - Rsines dhomopolymres et copolymres de chlorure de vinyle - Analyse granulomtrique sur tamiseuse dpression dair Reference number IS0 4610:2001(E) EN IS0 4610:2001 DPF discliamer Thi
17、s FDP fel amy ctnonia ededdebm tyfep.seca In aroccecnad tiwh Asebod gnisnecil ycilop, thsi fel may be pritnde ro eivwde but sllah ton eb tideed sselnu teh tyfepseca hwich are mededdeb era licdesne to dna tsniladel on teh moctupre epfrromign the ideti.gn In odgnidaolnw this file, raptise ccatpe trehi
18、en teh serilibisnopty fo ton fnirignign sebodA gnisnecil ilopcy. The IS0 tnecral Sceterarita catpecs no libaility in this aera. ebodA si a trmedarak of Adebo Stsysme Irocntarop.de teDails of teh fostware prtcudos desu to crtaee tsih PFD fel nac be fdnuo ni the Glarene Info talerive to the f;eli teh
19、PDF-taercnoi rapmateers weer tpodezimi for pritn.gni vErey cera sah eebn tkane to rusnee ttah the fel is tiusbael for ues by IS0 mrebme seidob. In teh kilnuley evtne ttah a pborlme talerign to ti si f,dnuo saelpe ifnrom teh tneclar Stercearita ta the serddas givne olebw. o IS0 1002 HA rithgs rresev.
20、de Unless torehiwse sficep,dei on rapt of tihs buptacilion may be rperdecudo ro tuilidez in any form ro by nay m,snae ele-c trinoc or m,lacinahce gnidulcni tohppocoyign dna cimrfo,mli tiwtuoh repminoiss ni rwitgni fmor eitreh IS0 at teh serddas olebw ro ISOs mme- reb ydob in the cuotnry fo the rtseu
21、qeer. IS0 cporythgi fofiec esaC tsopael65 1121-HC Geneva 02 Te.1 + 41 22 947 10 11 Fax +I4224790947 E-liam copyrightsio.ch Web wwwsi.oc.h II EN IS0 4610:2001 Contents Page 1 2 3 4 5 6 7 8 9 10 Scope . Normative reference . Term and definition . . Apparatus . Procedure . Expression of results Precisi
22、on . Test report 1 1 1 1 1 2 3 3 4 4 . 111 EN IS0 4610:2001 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 out through IS0 technical commit
23、tees. 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 collaborates closely with the In
24、ternational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISOAEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bo
25、dies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. IS0 shall not be held responsible for
26、identifying any or all such patent rights. International Standard IS0 4610 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. This second edition cancels and replaces the first edition (IS0 4610:1977), which has been modified as follows: - emulsion-p
27、olymerized PVC has been included in the scope; - a second obligatory measurement has been included; - a precision statement, based on current test data, has been included. iv EN IS0 4610:2001 Plastics - Vinyl chloride homopolymer and copolymer resins - Sieve analysis using air-jet sieve apparatus 1
28、Scope This International Standard specifies a method for the determination of the sieve retention and particle size distribution of preferably free-flowing vinyl chloride homopolymer and copolymer resins prepared by the “suspension”, “bulk” and “emulsion” polymerization processes. Control of these c
29、haracteristics can help to ensure consistency of supply and predictable processing behaviour. 2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amend
30、ments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest editi
31、on of the normative document referred to applies. Members of IS0 and IEC maintain registers of currently valid International Standards. IS0 565, Test sieves - Metal wire cloth, perforated metal plate and electroformed sheet - Nominal sizes of openings 3 Term and definition For the purposes of this I
32、nternational Standard, the following term and definition applies. 3.1 sieve retention the percentage of the mass of resin remaining on the sieve after the test 4 Sampling Take a sample which is representative of the resin as delivered and of sufficient size to permit the determination of the size di
33、stribution. Generally, 25 g shall be used for each sieve analysis. For fine-particle resins, which for the purpose of this International Standard are defined as between 80 pm and 100 pm, smaller quantities are more convenient, for example 10 g. 5 Sample preparation Unless otherwise agreed, analyse t
34、he sample as received (.e. as delivered). If the sample is not analysed on the day of receipt, it shall be kept in a sealed container under ambient conditions. To prevent difficulty in sieving caused by electrostatic charging of the resin, add an antistatic agent, for example 0,5 % by mass of y-alum
35、ina, unless otherwise specified, to the resin at the start of the analysis. 1 EN IS0 4610:2001 6 Apparatus 6.1 Sieves, circular, having a sieving surface corresponding to a diameter of 200 mm. The sides and mesh of each sieve shall be made of metal. The mesh shall be as defined in IS0 565. The choic
36、e of mesh aperture depends on the requirements and the particle size distribution of the resin to be examined. NOTE A suitable method of cleaning sieves is to use an ultrasonic cleaning device containing water and a detergent. 6.2 Air-jet sieve apparatus (see Figure I), consisting of a casing design
37、ed to contain a sieve (6.1), in the lower part of which are an outlet, to which suction may be applied, and an air inlet. The casing shall be covered with a preferably transparent lid. 8 Key 1 2 3 4 5 6 7 8 Sieve Casing Rotating jet Air inlet Manometer To vacuum Adjustable slot Lid (preferably trans
38、parent) Figure 1 - Air-jet sieve apparatus 2 EN IS0 4610:2001 The air inlet shall be fitted with a rotating jet consisting of a slot-shaped nozzle arranged radially beneath and very close to the sieve, so that when in rotation it blows air continuously through the sieve to keep the particles suspend
39、ed. The exhaust air pulls the finer particles through the sieve. The flow of air can be controlled by adjusting the working pressure, measured at the outlet; this may be achieved by means of an adjustable slot on the vacuum attachment. NOTE Apparatus of construction different from than that given in
40、 Figure 1 is allowed, provided that it has been verified that the results obtained are equivalent. 6.3 Timer (e.g. stopwatch), which indicates minutes and seconds and is equipped, if required, with a disconnecting switch for the motor of the sieve apparatus (6.2). 6.4 Balance, capable of being read
41、to 0,Ol g. 7 Procedure Securely fix a sieve (see 6.1) into the sieve apparatus (6.2). Weigh, to the nearest 0,l g, the material to be sieved, transfer it onto the sieve, and place the cover on the sieve apparatus. Regulate the flow of air to give a partial vacuum of 2,5 kPa (for example by means of
42、the adjustable slot on the vacuum attachment - see 6.2). Operate the motors of the sieve apparatus and the vacuum device for 4 min f 15 s for each sieving test. If during the sieving process a deposit becomes visible under the lid, sieving shall be interrupted and the deposit brushed down onto the s
43、ieve. The accuracy and precision of the method are not as good when the screen residue is small (less than 5 %, for example). In such cases it is of interest to extend the sieving time (to 10 min or even 15 min). However, for referee (in particular for designation) purposes, the value obtained after
44、 4 min f 15 s shall be used. After switching off the motors, weigh the residue on the sieve to the nearest 0,l g (for example by weighing the sieve and its contents and subtracting the tare). Repeat the procedure, as necessary, with sieves of different mesh aperture. 8 Expression of results Calculat
45、e the sieve retention R, as a percentage, from the equation ml R= - x 100 mo where mo is the mass, in grams, of sample used for the analysis; ml is the mass, in grams, of the residue on the sieve. Report the result to one decimal place. 3 EN IS0 4610:2001 Mesh aperture 63 pm 9 Precision Mesh apertur
46、e 250 pm Interlaboratory trials were conducted on four resins (including suspension homopolymer, emulsion homopolymer and graft copolymer) in five laboratories. For standard suspension resins, the repeatability standard deviation s, (within the same laboratory) and the reproducibility standard devia
47、tion SR (among different laboratories) are as given in Table 1. SR Table 1 0,28 1,17 I ST I 0,27 0,70 10 Test report The test report shall include the following information: a) a a) reference to this International Standard; b) all details necessary for complete identification of the resin analysed;
48、c) the mass, in grams, of sample used for the analysis; d) the sieving time, in minutes; e) the partial vacuum, in kilopascals; f) the percentage retained on each sieve; g) the kind and amount of antistatic agent used for sample preparation; h) the date of the test. 4 BS EN IS0 4610:2001 BSI 389 Chi
49、swick High Road Lon don w4 4AL BSI is the independent 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. Re vi si ons British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess 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 Bri
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