EN ISO 1183-1-2012 en Plastics - Methods for determining the density of non-cellular plastics - Part 1 Immersion method liquid pyknometer method and titration method《塑料 non-cellula.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1183-1:2012Plastics Methods for determining the density of non-cellular plasticsPart 1: Immersion method, liquid pyknometerBS EN ISO 1183-1:2012 BRITISH STANDARDNationa

2、l forewordThis British Standard is the UK implementation of EN ISO 1183-1:2012.It supersedes BS EN ISO 1183-1:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/21, Testing of plastics.A list of organizations represented on this committee can beob

3、tained 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 British Standards Institution 2013. Published by BSI StandardsLimited 2013 ISBN 978 0 580 69765 4 ICS 83.080.01 Compliance

4、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 2013. Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE N

5、ORM EN ISO 1183-1 December 2012 ICS 83.080.01 Supersedes EN ISO 1183-1:2004English Version Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion method, liquid pyknometer method and titration method (ISO 1183-1:2012) Plastiques - Mthodes de dtermination de la ma

6、sse volumique des plastiques non alvolaires - Partie 1: Mthode par immersion, mthode du pycnomtre en milieu liquide et mthode par titrage (ISO 1183-1:2012) Kunststoffe - Verfahren zur Bestimmung der Dichte von nicht verschumten Kunststoffen - Teil 1: Eintauchverfahren, Verfahren mit Flssigkeitspykno

7、meter und Titrationsverfahren (ISO 1183-1:2012) This European Standard was approved by CEN on 2 June 2012. 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 alterati

8、on. 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 CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by

9、 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 versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

10、Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDI

11、ZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1183-1:2012: EBS EN ISO 1183-1:2012EN ISO 1183-1:201

12、2 (E) 3 Foreword This document (EN ISO 1183-1:2012) 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 NBN. This European Standard shall be given the status of a national standard, either b

13、y publication of an identical text or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. 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

14、 shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 1183-1:2004. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgiu

15、m, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerl

16、and, Turkey and the United Kingdom. Endorsement notice The text of ISO 1183-1:2012 has been approved by CEN as a EN ISO 1183-1:2012 without any modification. BS EN ISO 1183-1:2012ISO 1183-1:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Terms and

17、 definitions . 14 Conditioning . 25 Methods . 25.1 Method A Immersion method 25.2 Method B Liquid pyknometer method 45.3 Method C Titration method 56 Correction for buoyancy in air . 67 Test report . 7Annex A (informative) Liquid systems suitable for use in Method C . 8Annex B (informative) Correcti

18、on for buoyancy in air 9Bibliography .10BS EN ISO 1183-1:2012ISO 1183-1:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through IS

19、O 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 committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates c

20、losely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Dra

21、ft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires 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 docum

22、ent may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 1183-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-chemical properties.This second edition cancels and replaces the first edition (ISO

23、 1183-1:2004), which has been technically revised.The main changes compared to the previous edition are as follows:a) the equation used to calculate the dependence of the density of air on pressure and temperature in Clause 6 has been replaced by two equations, one for non-tropical conditions, the o

24、ther for tropical conditions;b) a new annex (Annex B) has been added showing how the basic air buoyancy correction equation Equation (5) is derived.ISO 1183 consists of the following parts, under the general title Plastics Methods for determining the density of non-cellular plastics: Part 1: Immersi

25、on method, liquid pyknometer method and titration method Part 2: Density gradient column method Part 3: Gas pyknometer methodiv ISO 2012 All rights reservedBS EN ISO 1183-1:2012INTERNATIONAL STANDARD ISO 1183-1:2012(E)Plastics Methods for determining the density of non-cellular plastics Part 1: Imme

26、rsion method, liquid pyknometer method and titration methodWARNING The use of this part of ISO 1183 might involve hazardous materials, operations or equipment. This part of ISO 1183 does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of t

27、he user of this part of ISO 1183 to establish appropriate health and safety practices and to determine the applicability of any regulatory limitations prior to use.1 ScopeThis part of ISO 1183 specifies three methods for the determination of the density of non-cellular plastics in the form of void-f

28、ree moulded or extruded objects, as well as powders, flakes and granules. Method A: Immersion method, for solid plastics (except for powders) in void-free form. Method B: Liquid pyknometer method, for particles, powders, flakes, granules or small pieces of finished parts. Method C: Titration method,

29、 for plastics in any void-free form.NOTE This part of ISO 1183 is applicable to pellets as long as they are void-free. Density is frequently used to follow variations in physical structure or composition of plastic materials. Density might also be useful in assessing the uniformity of samples or spe

30、cimens. Often, the density of plastic materials will depend upon the choice of specimen preparation method. When this is the case, precise details of the specimen preparation method will have to be included in the appropriate material specification. This note is applicable to all three methods.2 Nor

31、mative 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 291, Plastics Standard atmosp

32、heres for conditioning and testingISO 472, Plastics Vocabulary3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 472 and the following apply.3.1massmquantity of matter contained in a bodyNOTE It is expressed in kilograms (kg) or grams (g). ISO 2012 All r

33、ights reserved 1BS EN ISO 1183-1:2012ISO 1183-1:2012(E)3.2apparent massmAPPmass of a body obtained by measuring its weight using an appropriately calibrated balanceNOTE It is expressed in kilograms (kg) or grams (g).3.3densityratio of the mass m of a sample to its volume V (at the temperature t), ex

34、pressed in kg/m3, kg/dm3(g/cm3) or kg/l (g/ml)NOTE The following terms, based upon ISO 80000-4, are given in Table 1 for clarification.Table 1 Density termsTerm Symbol Formulation UnitsDensity m/Vkg/m3kg/dm3(g/cm3)kg/l (g/ml)Specific volume V/m (= 1/)m3/kgdm3/kg (cm3/g)l/kg (ml/g)4 ConditioningThe t

35、est atmosphere shall be in accordance with ISO 291. In general, conditioning specimens to constant temperature is not required, because the determination itself brings the specimen to the constant temperature of the test.Specimens which change in density during the test to such an extent that the ch

36、ange is greater than the required accuracy shall be conditioned prior to measurement in accordance with the applicable material specification. When changes in density with time or atmospheric conditions are the primary purpose of the measurements, the specimens shall be conditioned as described in t

37、he material specification and, if no material specification exists, then as agreed upon by the interested parties.5 Methods5.1 Method A Immersion method5.1.1 Apparatus5.1.1.1 Analytical balance or instrument specifically designed for measurement of density, accurate to 0,1 mg.An automatically operat

38、ing instrument may be used. The calculation of density may be done automatically using a computer.5.1.1.2 Immersion vessel: a beaker or other wide-mouthed container of suitable size for holding the immersion liquid.5.1.1.3 Stationary support, e.g. a pan straddle, to hold the immersion vessel above t

39、he balance pan.2 ISO 2012 All rights reservedBS EN ISO 1183-1:2012ISO 1183-1:2012(E)5.1.1.4 Thermometer, graduated at 0,1 C intervals, covering the range 0 C to 30 C.5.1.1.5 Wire (if required), corrosion-resistant, of diameter not greater than 0,5 mm, for suspending specimens in the immersion liquid

40、.5.1.1.6 Sinker, of suitable mass to ensure complete immersion of the specimen, for use when the density of the specimen is less than that of the immersion liquid.5.1.1.7 Pyknometer, with a side-arm overflow capillary, for determining the density of the immersion liquid when this liquid is not water

41、. The pyknometer shall be equipped with a thermometer graduated at 0,1 C intervals from 0 C to 30 C.5.1.1.8 Liquid bath, capable of being thermostatically controlled to within 0,5 C, for use in determining the density of the immersion liquid.5.1.2 Immersion liquidUse freshly distilled or deionized w

42、ater, or another suitable liquid, containing not more than 0,1 % of a wetting agent to help in removing air bubbles. The liquid or solution with which the specimen comes into contact during the measurement shall have no effect on the specimen.The density of immersion liquids other than distilled wat

43、er need not be measured provided they are obtained from an accredited source and are accompanied by a certificate.5.1.3 SpecimensSpecimens may be in any void-free form except for powder. They shall be of a convenient size to give adequate clearance between the specimen and the immersion vessel and s

44、hould preferably have a mass of at least 1 g.When cutting specimens from larger samples, proper equipment shall be used to ensure that the characteristics of the material do not change. The surface of the specimen shall be smooth and free from cavities to minimize the entrapment of air bubbles upon

45、immersion in the liquid, otherwise errors will be introduced.5.1.4 Procedure5.1.4.1 Weigh the specimen, to the nearest 0,1 mg, in air while suspended with a wire of maximum diameter 0,5 mm. Record the mass of the specimen.5.1.4.2 Immerse the specimen, still suspended by the wire, in the immersion li

46、quid (5.1.2), contained in the immersion vessel (5.1.1.2) on the support (5.1.1.3). The temperature of the immersion liquid shall be 23 C 2 C (or 27 C 2 C). Remove any adhering air bubbles with a fine wire. Weigh the immersed specimen to the nearest 0,1 mg.If the measurement is carried out in a temp

47、erature-controlled room, the temperature of the whole apparatus, including the immersion liquid, shall be within the range 23 C 2 C (or 27 C 2 C).5.1.4.3 If necessary, determine the density of immersion liquids other than water as follows. Weigh the pyknometer (5.1.1.7) empty and then containing fre

48、shly distilled or deionized water at a temperature of 23 C 0,5 C (or 27 C 0,5 C). Weigh the same pyknometer, after cleaning and drying, filled with the immersion liquid also at a temperature of 23 C 0,5 C (or 27 C 0,5 C). Use the liquid bath (5.1.1.8) to bring the water and immersion liquid to the c

49、orrect temperature. Calculate the density IL, in grams per cubic centimetre, of the immersion liquid at 23 C (or 27 C), using the equation: ISO 2012 All rights reserved 3BS EN ISO 1183-1:2012ISO 1183-1:2012(E)ILILWW=mm(1)wheremILis the mass, in grams, of the immersion liquid;mWis the mass, in grams, of the water;Wis the density, in grams per cubic centimetre, of water at 23 C (or 27 C).5.1.4.4 Calculate the density S, in grams per cubic centimetre, of the specimen at