1、November 2011 Translation by DIN-Sprachendienst.English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 23.040.20!$v-“1831010www.din.deDDIN EN ISO 13229Thermoplastics piping systems for non-pressure applications Unplasticized poly(vinyl chloride) (PVC-U) pipes and fittings Determination of the viscosity number and -value (ISO 13229:2010)English translation of DIN EN ISO 13229:2011-11Rohrleitungssyst
3、eme aus Thermoplasten fr drucklose Anwendungen Rohre und Formstcke aus weichmacherfreiem Polyvinylchlorid (PVC-U) Bestimmung der Viskosittszahl und Berechnung des -Wertes (ISO 13229:2010)Englische bersetzung von DIN EN ISO 13229:2011-11Systmes de canalisations thermoplastiques pour applications sans
4、 pression Tubes et raccords en poly(chlorure de vinyle) non plastifi (PVC-U) Dtermination de lindice de viscosit rduite et de la valeur (ISO 13229:2010)Traduction anglaise de DIN EN ISO 13229:2011-11SupersedesDIN EN 922:1995-01www.beuth.deDocument comprises pagesIn case of doubt, the German-language
5、 original shall be considered authoritative.1010.11 KKKDIN EN ISO 13229:2011-11 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids” (Secretariat: JISC, Japan) in c
6、ollaboration with Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems” (Secretariat: NEN, Netherlands). The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-05-02 AA Prfverfahren f
7、r Rohre. The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 1628-2 DIN EN ISO 1628-2 Amendments This standard differs from DIN EN 922:1995-01 as follows: a) the text of ISO 13229:2010 has been adopted without any modification; b) a table of c
8、ontents has been added; c) a warning note relating to the use of tetrahydrofuran (THF) has been included; d) the standard has been editorially revised. Previous editions DIN EN 922: 1995-01 National Annex NA (informative) Bibliography DIN EN ISO 1628-2, Plastics Determination of the viscosity of pol
9、ymers in dilute solution using capillary viscosimeters Part 2: Poly(vinyl chloride) resins 2 EUROPEAN 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 - Unpl
10、asticized poly(vinyl chloride) (PVC-U) pipes and fittings - Determination of the 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 v
11、iscosit rduite et de la valeur K (ISO 13229:2010) Rohrleitungssysteme aus Thermoplasten 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 CE
12、N on 11 August 2011. 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 concerning such national standards
13、 may be obtained on application to the CEN-CENELEC 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 notifi
14、ed to the CEN-CENELEC Management Centre has the same status as the official versions. 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,
15、 Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, 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 Al
16、l rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13229:2011: E2DIN EN ISO 13229:2011-11 EN ISO 13229:2011 (E) Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Principle 4 4 Reagents for isolation or separation of the PVC
17、resin 4 5 Apparatus for isolation or separation of the PVC resin 5 6 Procedure 5 6.1 Isolation or separation of the PVC resin 5 6.2 Determination of the viscosity number . 5 7 Calculation of K-value 6 8 Accuracy . 6 9 Test report . 6 Annex A (informative) Relationship between K-value and viscosity n
18、umber for PVC resin . 7 Bibliography 8 Foreword 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 13229:2011 by
19、 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 conflicting n
20、ational 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 document supers
21、edes 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, Hungary
22、, 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 modificati
23、on. 3DIN EN ISO 13229:2011-11 EN ISO 13229:2011 (E) 1 Scope This International Standard specifies a method 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 thi
24、s International Standard, only the method for isolation (or separation) of the PVC resin is detailed, while 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 re
25、ferenced documents are indispensable for the application of this document. For dated references, only the 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 i
26、n dilute solution using capillary viscometers Part 2: Poly(vinyl chloride) resins 3 Principle A PVC resin, 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 so
27、lution that has been isolated by centrifuging and decantation. The presence of additives in injection-moulding 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
28、shall not be used. The precipitate is used for estimation of the viscosity number and K-value in accordance 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 clothin
29、g be used when applying solvents to the test specimen. The use of solvents in regard to application of 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.
30、4DIN EN ISO 13229:2011-11 EN ISO 13229:2011 (E) 5 Apparatus for isolation or separation of the PVC 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
31、Laboratory filter paper, capable of retaining polymer precipitated in accordance with 6.1. 5.6 Centrifuge 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 a
32、pproximately 2 g of PVC compound (2,5 g if the filler content is expected to be high), cut, if necessary, 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 P
33、VC resin shall be completely dissolved before continuing the procedure. Transfer the solution to 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
34、.9), without entraining any filler. In the beaker, precipitate the polymer by carefully adding methanol 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 precipitate
35、d polymer, but not the filter paper, to a bowl and dry at 50 C for at least 12 h in the vacuum dessicator (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 d
36、issolution in cyclohexanone. 5DIN EN ISO 13229:2011-11 EN ISO 13229:2011 (E) 7 Calculation of 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
37、time of the solvent, in seconds. Annex A gives the relation between the K-value and the viscosity 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 ref
38、erence to this International Standard, i.e. ISO 13229:2010, and the referring standard; b) complete 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 s
39、pecified in this International Standard; f) the date of the test. 6DIN EN ISO 13229:2011-11 EN ISO 13229:2011 (E) 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 c
40、onvenience, the K-values corresponding to a viscosity number from 60 ml/g to 178 ml/g 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
41、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 51,3 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
42、,5 69,0 69,5 70,0 70,5 71,0 71,5 71,9 72,4 72,9 73,3 140 142 144 146 148 150 152 154 156 158 160 162 164 166 168 170 172 174 176 178 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 7DIN EN ISO 13229:2011-11 EN ISO 13229:2011 (E) Bibliography 1 FIKENTSCHER, H. Cellulosa chemie, No. 13, 1932, pp. 58-64 8DIN EN ISO 13229:2011-11 EN ISO 13229:2011 (E)
