EN ISO 13229-2011 en Thermoplastics piping systems for non-pressure applications - Unplasticized poly(vinyl chloride) (PVC-U) pipes and fittings - Determination of the viscosity nu.pdf

《EN ISO 13229-2011 en Thermoplastics piping systems for non-pressure applications - Unplasticized poly(vinyl chloride) (PVC-U) pipes and fittings - Determination of the viscosity nu.pdf》由会员分享，可在线阅读，更多相关《EN ISO 13229-2011 en Thermoplastics piping systems for non-pressure applications - Unplasticized poly(vinyl chloride) (PVC-U) pipes and fittings - Determination of the viscosity nu.pdf（12页珍藏版）》请在麦多课文档分享上搜索。

1、BS EN ISO13229:2011ICS 23.040.20; 91.140.80NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDThermoplastics pipingsystems for non-pressure applications Unplasticizedpoly(vinyl chloride)(PVC-U) pipesand fittings Determination of theviscosity number andK-valueNation

2、al forewordThis British Standard is the UK implementation of EN ISO 13229:2011. It supersedes BS EN 922:1995 and BS ISO 13229:2010, which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/88/1, Plastics piping for non-pressure applications.A list of organ

3、izations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligatio

4、ns. BS EN ISO 13229:2011This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 30 June2010 BSI 2011ISBN 978 0 580 73955 2Amendments/corrigenda issued since publicationDate Comments 31 October 2011 This corrigendum renumbers BS ISO 13229:2010 as BS EN IS

5、O 13229:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13229 September 2011 ICS 23.040.20; 91.140.80 Supersedes EN 922:1994English Version Thermoplastics piping systems for non-pressure applications - Unplasticized poly(vinyl chloride) (PVC-U) pipes and fittings - Determination of the

6、viscosity number and K-value (ISO 13229:2010) Systmes de canalisations thermoplastiques pour applications sans pression - Tubes et raccords en poly(chlorure de vinyle) non plastifi (PVC-U) - Dtermination de lindice de viscosit rduite et de la valeur K (ISO 13229:2010) Rohrleitungssysteme aus Thermop

7、lasten fr drucklose Anwendungen - Rohre und Formstcke aus weichmacherfreiem Polyvinylchlorid (PVC-U) - Bestimmung der Viskosittszahl und Berechnung des K-Wertes (ISO 13229:2010) This European Standard was approved by CEN on 11 August 2011. CEN members are bound to comply with the CEN/CENELEC Interna

8、l 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 the CEN-CENELEC Management Centre or to any CE

9、N 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 CEN-CENELEC Management Centre has the same status as the official versi

10、ons. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slo

11、venia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN

12、national Members. Ref. No. EN ISO 13229:2011: EForeword The text of ISO 13229:2010 has been prepared by Technical Committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 13229

13、:2011 by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems” the secretariat of which is held by NEN. 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 March 2012, and confl

14、icting national standards shall be withdrawn at the latest by March 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This documen

15、t supersedes EN 922:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,

16、 Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 13229:2010 has been approved by CEN as a EN ISO 13229:2011 without any mo

17、dification. BS EN ISO 13229:2011 EN ISO 13229:2011 (E)INTERNATIONAL STANDARD1Thermoplastics piping systems for non-pressure applications Unplasticized poly(vinyl chloride) (PVC-U) pipes and fittings Determination of the viscosity number and K-value 1 Scope This International Standard specifies a met

18、hod for the determination of the viscosity number (also known as reduced viscosity) and K-value of an unplasticized poly(vinyl chloride) (PVC) resin derived from a pipe, fitting or compound. In this International Standard, only the method for isolation (or separation) of the PVC resin is detailed, w

19、hile the determination of the viscosity number is given in ISO 1628-2. The presence of other additives or polymers can invalidate this method (see Clause 3). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only t

20、he edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1628-2, Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 2: Poly(vinyl chloride) resins 3 Principle A PVC res

21、in, contained in a sample taken from a pipe, a fitting or a compound, is separated from most additives by dissolution in tetrahydrofuran (THF) and precipitation by methanol from a portion of the solution that has been isolated by centrifuging and decantation. The presence of additives in injection-m

22、oulding compounds can affect the results for materials for/from injection-moulded fittings. If other polymers soluble in THF and insoluble in methanol (e.g. PMMA material) are present, this method shall not be used. The precipitate is used for estimation of the viscosity number and K-value in accord

23、ance with ISO 1628-2. 4 Reagents for isolation or separation of the PVC resin 4.1 Tetrahydrofuran (THF), stabilized. WARNING It is very important for safety reasons that personal protective clothing be used when applying solvents to the test specimen. The use of solvents in regard to application of

24、this International Standard may be further controlled under national and/or regional legislation. In particular, the THF used shall be collected, stored and sent to solvent recovery. 4.2 Methanol. BS EN ISO 13229:2011 EN ISO 13229:2011 (E) ISO 2011 2 5 Apparatus for isolation or separation of the PV

25、C resin 5.1 Glass container, of minimum capacity 100 ml. 5.2 Magnetic stirrer, with an adjustable speed of 0 r/min to 1 200 r/min. 5.3 Glass beaker, of capacity 600 ml, tall form. 5.4 Filter funnel. 5.5 Laboratory filter paper, capable of retaining polymer precipitated in accordance with 6.1. 5.6 Ce

26、ntrifuge with tubes, for 50 ml. 5.7 Vacuum dessicator. 5.8 Water bath, if necessary (see 6.1). 5.9 Pasteur pipette, if necessary (see 6.1). 6 Procedure 6.1 Isolation or separation of the PVC resin Take approximately 2 g of PVC compound (2,5 g if the filler content is expected to be high), cut, if ne

27、cessary, from the pipe or fitting tested. Dissolve it in approximately 50 ml of THF in the glass container (5.1) by stirring. If the dissolution occurs slowly, warm carefully in a water bath (5.8). The PVC resin shall be completely dissolved before continuing the procedure. Transfer the solution to

28、a tube of the centrifuge (5.6) and operate the centrifuge for approximately 40 min. Decant that part of THF solution free of particles into the glass beaker (5.3), if necessary using a pasteur pipette (5.9), without entraining any filler. In the beaker, precipitate the polymer by carefully adding me

29、thanol and stirring, until 10 parts of methanol have been added per part of THF solution. Filter the suspension using a filter paper (5.5) and wash the precipitate with methanol. Transfer the precipitated polymer, but not the filter paper, to a bowl and dry at 50 C for at least 12 h in the vacuum de

30、ssicator (5.7). 6.2 Determination of the viscosity number Determine and record the viscosity number, in millilitres per gram, in accordance with ISO 1628-2 using a resin sample of (0,250 0,000 25) g by dissolution in cyclohexanone. BS EN ISO 13229:2011 EN ISO 13229:2011 (E) ISO 2011 37 Calculation o

31、f K-value Calculate the K-value of the PVC resin using Equation (1): 0,50001, 5 l g 1 1 4 0 2 1, 5 l g 1, 5 l g1 000151,5tttK+ + += (1) where t is the efflux time of the solution, in seconds; t0is the efflux time of the solvent, in seconds. Annex A gives the relation between the K-value and the visc

32、osity number (reduced viscosity) for PVC resin. 8 Accuracy The accuracy of the method for the determination of the K-value is 2. 9 Test report The test report shall include the following information: a) a reference to this International Standard, i.e. ISO 13229:2010, and the referring standard; b) c

33、omplete identification of the pipe, fitting or compound tested; c) the viscosity number; d) the K-value; e) any factor that could have affected the results, such as any incident or any operating details not specified in this International Standard; f) the date of the test. BS EN ISO 13229:2011 EN IS

34、O 13229:2011 (E) ISO 2011 4 Annex A (informative) Relationship between K-value and viscosity number for PVC resin For a PVC resin, the K-value according to Fikentscher1is calculated according to Equation (1). For convenience, the K-values corresponding to a viscosity number from 60 ml/g to 178 ml/g

35、for a solution in cyclohexanone containing 5 g resin/litre are given in Table A.1. Table A.1 Viscosity numbers and corresponding K-values Viscosity number ml/g K-value Viscosity numberml/g K-value Viscosity number ml/g K-value 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 49,6 50,5 51,

36、3 52,1 52,8 53,6 54,3 55,1 55,8 56,5 57,2 57,9 58,5 59,2 59,8 60,5 61,1 61,7 62,3 62,9 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 63,5 64,1 64,7 65,2 65,8 66,3 66,9 67,4 67,9 68,5 69,0 69,5 70,0 70,5 71,0 71,5 71,9 72,4 72,9 73,3 140 142 144 146 148 150 152 154 1

37、56 158 160 162 164 166 168 170 172 174 176 178 73,8 74,3 74,7 75,1 75,6 76,0 76,5 76,9 77,3 77,7 78,1 78,5 78,9 79,3 79,7 80,1 80,5 80,9 81,3 81,7 BS EN ISO 13229:2011 EN ISO 13229:2011 (E) ISO 2011 5Bibliography 1 FIKENTSCHER, H. Cellulosa chemie, No. 13, 1932, pp. 58-64 BS EN ISO 13229:2011 EN ISO

38、 13229:2011 (E) ISO 2011 ICS 23.040.20; 91.140.80 Price based on 5 pages BS EN ISO 13229:2011 EN ISO 13229:2011 (E) ISO 2011This page has been intentionally left blank BSI GroupHeadquarters 389 Chiswick High Road, London, W4 4AL, UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 standardsBSI - Bri

39、tish Standards InstitutionBSI 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.RevisionsBritish Standards are updated by amendment or revision. Users of Bri

40、tish 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 British Standard would inform the Secretary of the

41、 technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buyin

42、g standardsOrders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001 Email: You may also buy directly using a debit/credit card from the BSI Shop on the Website http:/ response to orders for inte

43、rnational standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European and international standards through its Library and its Tec

44、hnical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact Information Centre. Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: Subscribing members of BSI are kept up to date with standards dev

45、elopments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: Information regarding online access to British Standards via British Standards Online ca

46、n be found at http:/ information about BSI is available on the BSI website at http:/ CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Pat

47、ents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI.This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementa