1、BRITISH STANDARDBS EN ISO 1269:2006Plastics Homopolymer and copolymer resins of vinyl chloride Determination of volatile matter (including water)The European Standard EN ISO 1269:2006 has the status of a British StandardICS 83.080.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g5
2、1g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 1269:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 December 2006 BSI 2006ISBN 0 580 49816
3、6National forewordThis British Standard was published by BSI. It is the UK implementation of EN ISO 1269:2006. It supersedes BS 2782-4:Method 454D:1978 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/82, Thermoplastic materials.A list of organizati
4、ons represented on PRI/82 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 obligations.Amendments
5、 issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 1269November 2006ICS 83.080.20English VersionPlastics - Homopolymer and copolymer resins of vinyl chloride -Determination of volatile matter (including water) (ISO1269:2006)Plastiques - Rsines dhomop
6、olymres et de copolymresde chlorure de vinyle - Dtermination des matires volatiles(y compris leau) (ISO 1269:2006)Kunststoffe - Vinylchlorid-Homo- und Copolymerisate -Bestimmung der flchtigen Bestandteile (einschlielichWasser) (ISO 1269:2006)This European Standard was approved by CEN on 11 November
7、2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained o
8、n application to the Central 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat
9、has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Rom
10、ania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedwor
11、ldwide for CEN national Members.Ref. No. EN ISO 1269:2006: EForeword This document (EN ISO 1269:2006) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics“, the secretariat of which is held by IBN. This European Standard shall b
12、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2007, and conflicting national standards shall be withdrawn at the latest by May 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations
13、 of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, S
14、lovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 1269:2006 has been approved by CEN as EN ISO 1269:2006 without any modifications. EN ISO 1269:2006INTERNATIONALSTANDARDISO1269Third edition2006-11-15Reference numberISO 1269:2006(E)Plastics Homopolymer and cop
15、olymer resins of vinyl chloride Determination of volatile matter (including water)Plastiques Rsines dhomopolymres et de copolymres de chlorure de vinyle Dtermination des matires volatiles (y compris leau)EN ISO 1269:2006iiiiiForewordISO (the International Organization for Standardization) is a world
16、wide federation of national standards bodies(ISO member bodies). The work of preparing International Standards is normally carried out through ISOtechnical committees. Each member body interested in a subject for which a technical committee has beenestablished has the right to be represented on that
17、 committee. International organizations, governmental andnon-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the InternationalElectrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accor
18、dance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standardsadopted by the technical committees are circulated to the member bodies for voting. Publication as anInternational Standard requires
19、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 document may be the subject of patentrights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 1269 was prepared by Technical Commit
20、tee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplasticmaterials.This third edition cancels and replaces the second edition (ISO 1269:1980), which has been technically revised.The revision includes an additional method, method B, that uses an automatic thermobalance to determine thevolatile-matter
21、 content.EN ISO 1269:2006blank1Plastics Homopolymer and copolymer resins of vinyl chloride Determination of volatile matter (including water)1ScopeThis International Standard specifies two methods for determining the volatile matter (including water) inhomopolymer and copolymer resins of vinyl chlor
22、ide.2 PrincipleA test portion of resin, spread out in a weighing dish of specified dimensions, is heated at an appropriatetemperature to constant mass.3 Apparatus3.1 Method A (using an oven and balance)3.1.1 Oven, capable of being controlled at , with slight natural draught or equipped with a low-sp
23、eed circulation fan.3.1.2 Weighing dish, shallow, about in diameter and more than in height, made of glass,aluminium or, preferably, stainless steel, with a lid.3.1.3 Balance, capable of weighing to .3.1.4 Desiccator, containing a suitable desiccant.3.2 Method B (using an automatic thermobalance)3.2
24、.1 Oven, capable of being controlled at .3.2.2 Automatic thermobalance, consisting of a precision balance and an IR or halogen oven. Thethermobalance automatically evaporates the volatile matter to constant mass by checking the mass readings.3.2.3 Weighing dish, about in diameter and more than in he
25、ight, made of aluminium.3.2.4 Balance, capable of weighing to .3.2.5 Desiccator, containing a suitable desiccant.4 Procedure4.1 Method ABring the oven (3.1.1) to . Heat the dish (3.1.2), with its lid, in the oven for about . Remove andallow to cool in the desiccator (3.1.4) to room temperature. Weig
26、h the dish and lid to the nearest .110C 2C80 mm 5mm0,001 g110C 2C100 mm 5mm0,001 g110C 2C 1h0,005 gEN ISO 1269:20062Spread about of the test sample evenly over the bottom of the dish. Replace the lid and weigh to the nearest.Place the assembly in the oven at . Remove the lid but leave it in the oven
27、 and continueheating for about .Remove the assembly from the oven. Replace the lid on the dish. Allow to cool in the desiccator and weigh tothe nearest .Following the same procedure, heat in the oven for further periods of until the difference between twosuccessive weighings does not exceed .NOTE Pr
28、olonged heating at may result in the thermal degradation of some resins. In such circumstances,it is recommended that the evaporation procedure be conducted at .Carry out two determinations on each test sample.4.2 Method BBring the oven (3.2.1) to . Heat the aluminium dish (3.2.3) for about . Remove
29、 and allow tocool in the desiccator (3.2.5) to room temperature.Place the dish in the automatic thermobalance (3.2.2) and tare it.Spread to , depending on the type of resin, of the test sample evenly over the bottom of the dish andweigh it to the nearest .Set the thermobalance test temperature to th
30、e value appropriate to the resin.Switch on the thermobalance heating system and heat until the mass loss per second over a period of isless than .NOTE These operating conditions have been selected to minimize the effect of thermal degradation.Carry out two determinations on each test sample.5 Expres
31、sion of results5.1 Method AFor each determination, calculate the percentage of volatile matter (including water) to two decimal places fromthe formula:whereis the mass, in grams, of the empty dish and lid (after heating and cooling);is the mass, in grams, of the dish, lid and test portion before hea
32、ting;is the mass, in grams, of the dish, lid and test portion after heating.If the values of the percentage volatile matter obtained in the two determinations on the test sample differ byless than (absolute), use these values to calculate the mean percentage volatile matter of the testsample, expres
33、sing the mean to the nearest (absolute).5g0,005 g110C 2C1h0,005 g30 min0,005 g110C 2C105C 2C110C 2C 1h5g 15 g0,005 g2 min0,02 mgm2m3m2m1 100m1m2m30,10 %0,01 %EN ISO 1269:20063If this is not the case, carry out further determinations until two values satisfying this requirement are obtained.However,
34、if the two values obtained for the percentage volatile matter are each less than , use thesevalues to calculate the mean value for the test sample irrespective of the absolute difference between them.NOTE For many purposes, for example the designation of a resin, the expression of the mean value of
35、the percentagevolatile matter to one decimal place is sufficient.5.2 Method BFor each determination, the result is calculated automatically by the automatic thermobalance. It is expressedas a percentage to two decimal places.If the values of the percentage volatile matter obtained in the two determi
36、nations on the test sample differ byless than (absolute), use these values to calculate the mean percentage volatile matter of the testsample, expressing the mean to the nearest (absolute).If this is not the case, carry out further determinations until two values satisfying this requirement are obta
37、ined.However, if the two values obtained for the percentage volatile matter are each less than , use thesevalues to calculate the mean value for the test sample irrespective of the absolute difference between them.NOTE For many purposes, for example the designation of a resin, the expression of the
38、mean value of the percentagevolatile matter to one decimal place is sufficient.6Precision Method A: An interlaboratory test programme has given a reproducibility of (absolute). Method B: An interlaboratory test programme, carried out within one company, has given a reproducibilityof (absolute).7 Tes
39、t reportThe test report shall include the following particulars:a) a reference to this International Standard;b) all details necessary for complete identification of the product tested;c) the method used, i.e. method A or method B;d) the temperature used to heat the test portion in method A;e) the m
40、ass of the test portion, the temperature and the test duration in method B;f) the result, expressed in accordance with 5.1 or 5.2;g) details of any circumstances which may have affected the result.0,30 %0,10 %0,01 %0,30 %0,10 %0,10 %EN ISO 1269:2006BS EN ISO 1269:2006BSI389 Chiswick High RoadLondonW
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