BS EN 1905-1999 Plastics piping systems - Unplasticized poly(vinyl chloride) (PVC-U) pipes fittings and material - Method for assessment of the PVC content based on total chlorine .pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1905:1999 BS 2782-1

2、1: Method 1105C: 1999 The European Standard EN 1905:1998 has the status of a British Standard ICS 23.040.20; 23.040.45; 83.140.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Plastics piping systems Unplasticized poly(vinyl chloride) (PVC-U) pipes, fittings and material Met

3、hod for assessment of the PVC content based on total chlorine contentThis British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 July 1999 BSI 07-1999 ISB

4、N 0 580 32471 0 BS EN 1905:1999 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the English language version of EN 1905:1998. The UK participation in its preparation was entrusted to Technical Committee PRI/61, Plastics piping systems and compone

5、nts, which has the responsibility to: aid enquirers to understand the text; present to the responsible 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 t

6、he UK. A list of organizations represented on this committee can be obtained on request to its secretary. This European Standard is also incorporated into BS 2782-11 Methods of testing plastics Part 11: Thermoplastics pipes, fittings and valves,a s Method 1105C:1999, for association with related tes

7、t methods for plastics materials and plastics piping systems. It may be used for the revision or amendment of other national standards, but it should not be presumed to apply to any existing standard or specification which contains or makes reference to a different test method until that standard/sp

8、ecification has been amended or revised to make reference to this method and adjust any requirements as appropriate. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the sectio

9、n entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. WARNING This British Standard, which is identical with EN 1905:1998, does not necessarily detail all the precautions necessary to meet the requirements of the Health

10、and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety precautions and the method should be performed only by trained personnel. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for the

11、ir 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 title page, pages 2 to 4, an inside back cover and a back cover.CEN European Committee for Stand

12、ardization Comite Europe en de Normalisation Europa isches Komitee fu r 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 Members. Ref. No. EN 1905:1998 E EUROPEAN STANDARD EN 1905 NOR

13、ME EUROPE ENNE EUROPA ISCHE NORM December 1998 ICS 23.040.90 Descriptors: plastic tubes, water pipelines, water supply, pipe fittings, unplasticized polyvinyl chloride, chemical analysis, determination of content, polyvinyl chloride English version Plastics piping systems Unplasticized poly(vinyl ch

14、loride) (PVC-U) pipes, fittings and material Method for assessment of the PVC content based on total chlorine content Syste mes de canalisations en plastique Tubes, raccords et matie res en poly(chlorure de vinyle) non plastifie (PVC-U) Me thode de valuation de la teneur en PVC sur la base de la ten

15、eur totale en chlore Kunststoff-Rohrleitungssysteme Rohre, Formstu cke und Werkstoff aus weichmacherfreiem Polyvinylchlorid (PVC-U) Verfahren zur Bestimmung des PVC-Gehaltes auf der Basis des Gesamtchlorgehaltes This European Standard was approved by CEN on 23 November 1998. CEN members are bound to

16、 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 may be obtained on application to the Centra

17、l 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 language and notified to the Central Secretariat has the same status as th

18、e 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 Kingdom.Page 2 EN 1905:1998 BSI 07-1999 Forewor

19、d This European Standard has been prepared by Technical Committee CEN/TC 155, Plastics piping systems and ducting systems, the Secretariat of which is held by NNI. This standard is based on a document prepared by TC 138/SC 1 AHG, PVC Material, from the International Organization for Standardization

20、(ISO). 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 June 1999, and conflicting national standards shall be withdrawn at the latest by June 1999. According to the CEN/CENELEC Internal Regulation

21、s, 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, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United

22、 Kingdom. This standard is one of a series of standards on test methods which support System Standards for plastics piping systems and ducting systems.Page 3 EN 1905:1998 BSI 07-1999 1 Scope This standard specifies a method for assessing the poly(vinyl chloride) (PVC) content in reprocessable and re

23、cyclable unplasticized (PVC-U) materials or materials derived from PVC-U products. In this standard, only the method for calculation of the PVC content is described, while for the determination of the chlorine content reference is made to prEN ISO 1158:1997. If the material contains or is supposed t

24、o contain chlorinated poly(vinyl chloride) (PVC-C) or chlorinated polyethylene (PE-C), an apparent PVC content is calculated. 2 Normative references This standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate p

25、laces in the text and the publications are listed hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred

26、 to applies. prEN ISO 1158:1997, Plastics Vinyl chloride homopolymers and copolymers Determination of chloride. (ISO/DIS 1158:1997) EN ISO 3451-5:1996, Plastics Determination of ash Part 5: Poly(vinyl chloride). (ISO 3451-5:1989) 3 Principle An assessment of the PVC content, taking into account the

27、presence of fillers, additives and, if applicable, other polymers, is made by calculation based on the chlorine content determined in accordance with prEN ISO 1158:1997. NOTE It is assumed that the following test parameter is set by the standard making reference to this standard: the sampling proced

28、ure, applicable to pipes, fittings or material (see clause 4). 4 Test pieces Test pieces, appropriate to the method(s) used (see clause 5 and associated notes), shall be prepared, from samples taken in accordance with the referring standard, from a pipe, fitting or material, as applicable. 5 Procedu

29、re 5.1 Determination of chlorine content Determine the chlorine content, m Cl , in accordance with prEN ISO 1158:1997, or any other analytical method giving equivalent results. NOTE Methods using infra-red analysis or X-ray analysis may be suitable. In case of dispute, the method given in prEN ISO 1

30、158:1997 shall be used. 5.2 Calculation of the PVC content or apparent PVC content Calculate the PVC content or the apparent PVC content, in percentage by mass, m v , using the following equation: m v = 3 100 m Cl 56,8 where m Cl is the chlorine content expressed as a percentage by mass in accordanc

31、e with clause 7 of prEN ISO 1158:1997. NOTE If the material under analysis contains PVC-C, PE-C or chlorine-free polymers, the calculated PVC content may deviate from the actual PVC content. 5.3 Determination of filler content Determine the filler content, in percentage by mass, m f , in accordance

32、with EN ISO 3451-5:1996, or any other analytical method giving equivalent results. NOTE 1 Other fillers may also be present. NOTE 2 Methods using infra-red analysis, X-ray analysis or chemical analysis may be suitable. In case of dispute, the method given in EN ISO 3451-5:1996 shall be used. 5.4 Val

33、idation of composition 5.4.1 Check the validity of m v and m f by calculating the sum of PVC, filler and additive contents, M,i n percentage by mass, using the following equation: M = m v + m f +2 where m v is the PVC content; m f is the filler content. NOTE 1 It is assumed that the combined amount

34、of additives incorporated (e.g. pigments, stabilizers and lubricants) is at least 2 % by mass. If M 97 %, continue in accordance with 5.4.2. If M$ 97 %, calculate the PVC content m v ,i n percentage by mass, using the following equation: m v = 1002 (m f +2 ) NOTE 2 In this case, PVC-C or PVC-C/ABS b

35、lends may be present. These blends are considered not to have a detrimental effect on PVC products and therefore are counted as PVC-U. 5.4.2 If M 97 %, the material may contain one or more of the following: PE-C in large quantities; other (chlorine-free) polymers; additives in excess of 2 % by mass.

36、 In such cases, determine by infra-red or X-ray analysis whether chlorine-free polymers or additives are present and proceed in accordance with a) or b), as applicable. The infra-red or X-ray analysis equipment shall be calibrated in accordance with the manufacturers instructions before testing.Page

37、 4 EN 1905:1998 BSI 07-1999 a) If not more than 2 % by mass of additives and no additional polymers other than PE-C are present, calculate the PVC and PE-C contents, m v and m E , by solving the following simultaneous equations: m E + m v + m f +2=1 0 0 0,37m E + 0,57m v = m Cl* where m Cl* is the c

38、hlorine content, in percentage by mass of the polymeric parts, calculated by using the following equation: m Cl* = m Cl 3 100 1002 m f b) If additives in excess of 2 % or other polymers are found, take the PVC content to be equal to the apparent PVC content (see 5.2). 6 Test report The test report s

39、hall include the following information: a) a reference to this standard and to the referring standard; b) a full identification of the material under test; c) a description of the sampling procedure used; d) identification of the analytical methods used; e) list of the measured and calculated values

40、 in percentage by mass; f) any factors which may have affected the results, such as any incidents or any operating details not specified in this standard; g) the date of the test.blankBS EN 1905:1999 BS 2782-11: Method 1105C: 1999 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | |

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