1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1133-2:2011Plastics Determination of themelt mass-flow rate (MFR) andmelt volume-flow rate (MVR)of thermoplasticsPart 2: Method for materials sensitive totime-temperatu
2、re history and/or moisture(ISO 1133-2:2011)BS EN ISO 1133-2:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO1133-2:2011. Together with BS EN ISO 1133-1:2011, it supersedes BSEN ISO 1133:2005 which is withdrawn.The UK participation in its preparation was
3、entrusted to TechnicalCommittee PRI/21, Testing of plastics.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The B
4、ritish Standards Institution 2012ISBN 978 0 580 63355 3ICS 83.080.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publica
5、tionDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1133-2 December 2011 ICS 83.080.20 Supersedes EN ISO 1133:2005English Version Plastics - Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics - Part 2: Method for mate
6、rials sensitive to time-temperature history and/or moisture (ISO 1133-2:2011) Plastiques - Dtermination de lindice de fluidit chaud des thermoplastiques, en masse (MFR) et en volume (MVR) - Partie 2: Mthode pour les matriaux sensibles lhistorique temps-temprature et/ou lhumidit (ISO 1133-2:2011) Kun
7、ststoffe - Bestimmung der Schmelze-Masseflierate (MFR) und der Schmelze-Volumenflierate (MVR) von Thermoplasten - Teil 2: Verfahren fr Materialien, die empfindlich gegen eine zeit- bzw. temperaturabhngige Vorgeschichte und/oder Feuchte sind (ISO 1133-2:2011) This European Standard was approved by CE
8、N on 30 November 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 standar
9、ds 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 noti
10、fied 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, Lithuani
11、a, 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
12、All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1133-2:2011: EBS EN ISO 1133-2:2011EN ISO 1133-2:2011 (E) 3 Foreword This document (EN ISO 1133-2:2011) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration
13、with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. 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 2012, and conflicting national standards shall be withd
14、rawn at the latest by June 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 supersedes EN ISO 1133:2005. According
15、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, Iceland, Ireland, Italy, L
16、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1133-2:2011 has been approved by CEN as a EN ISO 1133-2:2011 without any modification. BS EN ISO 1133-2:2011I
17、SO 1133-2:2011(E) ISO 2011 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references .23 Terms and definitions .24 Principle .25 Apparatus 25.1 Extrusion plastometer 25.2 Accessory equipment 36 Test sample .46.1 Sample form 46.2 Sample pre-treatment and storage .47
18、 Temperature verification, cleaning and maintenance of the apparatus .57.1 Verification of the temperature-control system 57.2 Cleaning the apparatus 57.3 Vertical alignment of the instrument 58 Procedural set-up 58.1 General .58.2 Selection of temperature and load .68.3 Cleaning .68.4 Selection of
19、sample mass and charging the cylinder .69 Procedure 79.1 Selection of temperature and load .79.2 Minimum piston displacement distance .79.3 Timer device 79.4 Preparation for the test 79.5 Measurement 79.6 Expression of results .810 Flow rate ratio (FRR) .811 Precision 812 Test report .9Annex A (info
20、rmative) Verification of temperature in the cylinder 10Annex B (informative) Repeated MVR determinations on different materials carried out in line with this part of ISO 1133 14Bibliography .16BS EN ISO 1133-2:2011ForewordISO (the International Organization for Standardization) is a worldwide federa
21、tion of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committ
22、ee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance
23、with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires appr
24、oval 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 patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 1133-2 was prepared by Technical Committ
25、ee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-chemical properties.ISO 1133 consists of the following parts, under the general title Plastics Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics: Part 1: Standard method Part 2: Method for materials se
26、nsitive to time-temperature history and/or moistureISO 1133-2:2011(E)iv ISO 2011 All rights reservedBS EN ISO 1133-2:2011IntroductionThis part of ISO 1133 provides a method that is appropriate to those materials that exhibit a high rheological sensitivity to the time-temperature history experienced
27、by the sample during the test and/or moisture. For such materials, ISO 1133-1, which has less-tightly specified testing conditions than this part of ISO 1133, is considered to be unsuitable for obtaining data of an acceptable level of precision (i.e. at least equivalent to that obtained by ISO 1133-
28、1 for stable materials). This part of ISO 1133 is considered to be particularly relevant for moisture sensitive materials.The primary difference between this part of ISO 1133 and ISO 1133-1 is that this part of ISO 1133 specifies tighter tolerances on the temperature, time line, sample amount and pr
29、e-treatment, resulting in more reproducible and accurate measurements.The accuracy of MVR determination of thermoplastic materials whose rheological behaviour is affected by phenomena such as hydrolysis and condensation is often significantly influenced by: moisture content and sample conditioning;
30、sample handling; a small difference in temperature, i.e. the temperature variation in the cylinder with position and/or time; the total time that the material is exposed to the test temperature; the sample volume; sample form (shape and size pellets, powder, flake, etc.); cleaning of the apparatus.I
31、n order to obtain accurate repeatable and reproducible results, not only does the equipment need to meet the requirements specified in this part of ISO 1133, but also the material handling and test procedure need to be followed precisely and consistently, particularly with respect to those details m
32、entioned above to which the results are sensitive. Minor deviations from the equipment requirements, procedure and/or sample handling can result in considerable loss of repeatability, reproducibility and accuracy of the measurement.In general, the test conditions for determination of MVR and MFR val
33、ues are specified in the material standard and shall be referred to prior to conducting tests. Test conditions for the determination of MVR and MFR of materials whose rheological behaviour is affected by hydrolysis, condensation or cross-linking during the measurement are in many cases not yet menti
34、oned in the materials standards. Standards for these materials are likely to be revised or developed in the future. Where no relevant material standard exists or where no test conditions are specified, then the drying and test conditions should be agreed between the interested parties.NOTE At the ti
35、me of publication, there is no evidence to suggest that the use of this part of ISO 1133 for stable materials results in better precision in comparison with the use of ISO 1133-1.ISO 1133-2:2011(E) ISO 2011 All rights reserved vBS EN ISO 1133-2:2011BS EN ISO 1133-2:2011INTERNATIONAL STANDARD ISO 113
36、3-2:2011(E)Plastics Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics Part 2: Method for materials sensitive to time-temperature history and/or moistureWARNING Persons using this document should be familiar with normal laboratory practice, if applicable
37、. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory requirements.IMPORTANT The equipment shall meet the requirem
38、ents specified in this document and the measurements shall be carried out under specified conditions of temperature and load with special attention being paid to sample pre-treatment, strictly following the procedure prescribed in this document and in any applicable material standard.1 ScopeThis par
39、t of ISO 1133 specifies a procedure for the determination of the melt volume-flow rate (MVR) and melt mass-flow rate (MFR) of thermoplastic materials that exhibit a high rheological sensitivity to the time-temperature history experienced by the sample during the test and/or to moisture.NOTE 1 Some g
40、rades of materials affected by hydrolysis are of, for example, poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly(ethylene naphthalate) (PEN), other polyester types and polyamides; and by cross-linking are of, for example, thermoplastic elastomers (TPE) and thermoplastic vu
41、lcanizates (TPV). It is possible that this method will also be suitable for use with other materials.It is possible that this method will not be appropriate for materials whose rheological behaviour is extremely affected during testing (see Note 2).NOTE 2 For materials where the coefficient of varia
42、tion of the MFR or MVR results is found to be higher than the precision mentioned in ISO 1133-1, the viscosity number in dilute solution (ISO 307, ISO 1628) can be more appropriate for characterization purposes.NOTE 3 Minor deviations from the equipment requirements, procedure and/or sample handling
43、 can result in considerable loss of reproducibility, repeatability and accuracy of the measurement. MVR results determined on different materials, indicating the repeatability of the test method of this part of ISO 1133 when measured under ideal measurement conditions, are reported in Annex B.MFR va
44、lues can be determined by calculation from MVR measurements provided the melt density at the test temperature and pressure is known, or by measurement using a cutting device provided that the accuracy of the measurement is at least the same as that of the MVR measurement.NOTE 4 The density of the me
45、lt is required at the test temperature and pressure. In practice, the pressure is low and values obtained at the test temperature and ambient pressure suffice.The primary difference between this part of ISO 1133 and ISO 1133-1 is that this part of ISO 1133 specifies tighter tolerances on the tempera
46、ture in the cylinder and on the time duration over which the material is subjected to that temperature. Thus the time-temperature history of the material is more tightly controlled and consequently, for materials that are likely to be affected by exposure to elevated temperatures, the variability of
47、 test results is reduced compared with whether the specifications of ISO 1133-1 were used. ISO 2011 All rights reserved 1BS EN ISO 1133-2:2011This part of ISO 1133 also provides information for preparation and handling of moisture sensitive materials that again are critical to obtaining repeatable,
48、reproducible and accurate data.The test conditions for measurement of the MVR and MFR are often specified in the material standard. However, for those materials where there are no test conditions specified in the material standard, it is necessary for the test conditions to be agreed between the int
49、erested parties.2 Normative referencesThe following referenced 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 472, Plastics VocabularyISO 1133-1, Plastics Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics Part 1: Standard methodISO 15512, Plastics Determination of water content3 Terms and defini
