1、BRITISH STANDARD BS EN ISO 1183-2:2004 Plastics Methods for determining the density of non-cellular plastics Part 2: Density gradient column method The European Standard EN ISO 1183-2:2004 has the status of a British Standard ICS 83.080.01 BS EN ISO 1183-2:2004 This British Standard was published un
2、der the authority of the Standards Policy and Strategy Committee on 4 August 2004 BSI 4 August 2004 ISBN 0 580 44210 1 National foreword This British Standard is the official English language version of EN ISO 1183-2:2004. It is identical with ISO 1183-2:2004. It partially supersedes BS 2782-6:Metho
3、ds 620A to 620D:1991. The UK participation in its preparation was entrusted to Technical Committee PRI/21, Testing of plastics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards w
4、hich implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publi
5、cation does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible internation
6、al/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 the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO tit
7、le page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 10, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NOR
8、MEEUROPENNE EUROPISCHENORM ENISO11832 July2004 ICS83.080.01 Englishversion PlasticsMethodsfordeterminingthedensityofnoncellular plasticsPart2:Densitygradientcolumnmethod(ISO1183 2:2004) PlastiquesMthodesdedterminationdelamasse volumiquedesplastiquesnonalvolairesPartie2: Mthodedelacolonnegradientdema
9、ssevolumique (ISO11832:2004) KunststoffeVerfahrenzurBestimmungderDichtevon nichtverschumtenKunststoffenTeil2:Verfahrenmit Dichtegradientensule(ISO11832:2004) ThisEuropeanStandardwasapprovedbyCENon22June2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsfo
10、rgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversion
11、inanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Ice
12、land,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN All
13、rightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO11832:2004:E I NESO 11-38:22( 400E) 2 Foreword This document (EN ISO 1183-2:2004) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaborationwith Technical Committee CEN/TC 249 “Plastics
14、“, the secretariat of which is held by IBN. 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 January 2005, and conflicting national standards shall be withdrawn at the latest by January 2005. Accor
15、ding to the CEN/CENELEC Internal Regulations, the national standards organizations 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, Lithuan
16、ia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 1183-2:2004 has been approved by CEN as EN ISO 1183-2 2004 without any modifications. ENISO11832:2004 Reference number ISO 1183-2:2004(E
17、) OSI 4002INTERNATIONAL STANDARD ISO 1183-2 First edition 2004-07-15 Plastics Methods for determining the density of non-cellular plastics Part 2: Density gradient column method Plastiques Mthodes de dtermination de la masse volumique des plastiques non alvolaires Partie 2: Mthode de la colonne grad
18、ient de masse volumique ENISO11832:2004IS-3811 O2:(4002E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this file mairp eb ynted iv roweb detu slahl ton ide ebtlnu deess the typefaces whice era hml era deddebicsnede to i dnanstlaled t noeh c
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21、ttneC ehlar Secrteiraat ta the serddaig sleb nevwo. ISO 4002 All irthgs erse.devr lnUeto sswrehise specified, on trap fo this lbupictaion maeb y cudorperro de tuilizi den yna form ro na ybm ynae,s lecetrinoc ro mecinahcal, inclidung tohpcoiypodna gn micrfoilm, wittuoh repmissii non writign from ietI
22、 rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotrfo y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dnaii ISO 4002 Allr ithgsr esedevrENISO11832:2004IS-3
23、811 O2:(4002E) I SO 4002 All irthgs ersedevr iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Conditioning 2 5 Method 2 6 Test report 4 Annex A (informative) Liquid systems suitable for density determinations 6 Annex B (informative) Preparation of densit
24、y gradient column 7 ENISO11832:2004IS-3811 O2:(4002E) iv I SO 4002 All irthgs ersedevrForeword ISO (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 th
25、rough 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 committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collab
26、orates closely 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 Stan
27、dards. Draft 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
28、 this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1183-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical- chemical properties. Together with the other parts (see below), this p
29、art of ISO 1183 cancels and replaces ISO 1183:1987, which has been technically revised. ISO 1183 consists of the following parts, under the general title Plastics Methods for determining the density of non-cellular plastics: Part 1: Immersion method, liquid pyknometer method and titration method Par
30、t 2: Density gradient column method Part 3: Gas pyknometer method ENISO11832:2004INTENRATIONAL TSANDADR IS-3811 O2:(4002E)I SO 4002 All irthgs ersedevr 1Plastics Methods for determining the density of non-cellular plastics Part 2: Density gradient column method WARNING The use of this part of ISO 11
31、83 may 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 the user of this part of ISO 1183 to establish appropriate health and safety practices and to determ
32、ine the applicability of any regulatory limitations prior to use. 1 Scope This part of ISO 1183 specifies a gradient column method for the determination of the density of non-cellular moulded or extruded plastics in void-free form. Density gradient columns are columns containing a mixture of two liq
33、uids, the density in the column increasing uniformly from top to bottom. 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 may also be useful in assessi
34、ng the uniformity of samples or specimens. 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. 2 Normative refe
35、rences The 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 31-3, Quantities and units Part 3: Mec
36、hanics ISO 291, Plastics Standard atmospheres for conditioning and testing ISO 1183-1:2004, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration method 3 Terms and definitions For the purposes of this document, the fol
37、lowing terms and definitions apply. 3.1 density ratio of the mass m of a sample to its volume V (at the temperature t) expressed in kg/m 3 , kg/dm 3(g/cm 3 ), or kg/l (g/ml) NOTE The following terms, based upon ISO 31-3, are given here for clarification. ENISO11832:2004IS-3811 O2:(4002E) 2 I SO 4002
38、 All irthgs ersedevrTable 1 Density terms Term Symbol Formulation Units Density m/V kg/m 3kg/dm 3(g/cm 3 ) kg/l (g/ml) Specific volume V/m (= 1/) m 3 /kg dm 3 /kg (cm 3 /g) l/kg (ml/g) 4 Conditioning Conditioning and testing shall be in accordance with ISO 291 or the appropriate material standard. I
39、n 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 change is greater than the required accuracy of the de
40、nsity determination 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 the material specificati
41、on and, if no material specification exists, then as agreed upon by the interested parties. 5 Method 5.1 Apparatus 5.1.1 Density gradient column, consisting of a suitable graduated column, not less than 40 mm in diameter, with a cover. The height of the column shall be compatible with the accuracy r
42、equired. A graduation interval of 1 mm for the scale on the column is normal. 5.1.2 Liquid bath, capable of being thermostatically controlled to within 0,1 C or 0,5 C, depending on the sensitivity required (see Annex B). 5.1.3 Calibrated glass floats, covering the density range in which measurements
43、 are to be made and approximately evenly distributed throughout this range. NOTE These may be purchased from an accredited source or prepared as described in 5.4.1. 5.1.4 Balance, accurate to 0,1 mg. 5.1.5 Siphon or pipette assembly, for filling the gradient column (5.1.1), as shown in Figure B.1 or
44、 B.2, or any other suitable device. 5.2 Immersion liquids Required are two miscible liquids of different densities, freshly distilled in the case of pure liquids. The densities of various liquids are given in Annex A as a guide. The liquid with which the specimen comes into contact during the measur
45、ement shall have no effect on the specimen. Prepare the mixture of liquids as specified in 5.4.1.2. ENISO11832:2004IS-3811 O2:(4002E) I SO 4002 All irthgs ersedevr 35.3 Specimens Specimens shall consist of pieces of the material cut to any convenient shape for ease of identification. The dimensions
46、of each piece shall be chosen to permit accurate measurement of the position of the centre of the piece. When cutting specimens from larger samples, care shall be taken to ensure that the characteristics of the material are not changed due to excessive heat generation. The surface of the specimen sh
47、all be smooth and free from cavities to minimize the entrapment of air bubbles upon immersion in the liquid, otherwise errors will be introduced. NOTE Specimens of less than 5 mm in diameter are normally suitable. 5.4 Procedure 5.4.1 Preparation and calibration of glass floats 5.4.1.1 The glass floa
48、ts (5.1.3) may be produced by any convenient method. They shall be approximately spherical, of diameter not greater than 5 mm and fully annealed. 5.4.1.2 To prepare the glass floats for use, prepare a series of mixtures of about 500 ml of the two immersion liquids (5.2) covering the density range to be used in the density gradient column (5.1.1). With the floats and column at ambient temperature, place the floats carefully into these mi
