1、 STD-BSI BS EN IS0 4b08-ENGL 1778 D LbZLibb9 0730239 TT7 BRITISH STANDARD Plastics - Homopolymer and copolymer resins of vinyl chloride for general use - De termination of plasticizer absorption at room temperature The European Standard EN IS0 46081998 has the status of a British Standard ICs 83.080
2、.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN IS0 4608:1998 BS 2782-4: Method 4543: 1998 STD.BSI BS EN IS0 LibO8-ENGL 1998 = Lb24bb9 0730240 730 = Amd. No. Date BS .EN IS0 46081998 Text affected National foreword This British Standard is the English language versio
3、n of EN IS0 46081998. It is identical with IS0 4608 1998. It supersedes BS 27824 Method 454E 1992 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRIEM, Vimy1 materials, which has the responsibility to: - aid enquirers to understand the text; - presen
4、t to the responsible internationalEuropean committee any enquiries on the interpretation, or proposais for change, and keep the UK inter - monitor related international and European developments and promulgate them in the UK A list of organizations represented on this committee can be obtained on re
5、quest to its secrekxy. Cross-references Attention is drawn to the fact that CEN and CENELEC standards nonndy include an annex which lists nonnative references to internationai publications with their corresponding European publications. The British Standards which implement intmatiomd or European pu
6、blications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index“, or by using the “Find” facility of the BSI Standards Eiwtronic Catalogue. A British Standard does not purport to include all the necessary pr
7、ovisions of a contract Users of British Standards are responsible for their 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 IS0 title page, the EN
8、IS0 foreword page, the IS0 title page, page ii, pages 1 to 5 and a back cover. This British Standar having been prepared under the direction of the Sector Board for Materiais and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 July 1998 O BSI 1998 ISBN
9、 O 680 29861 2 STD-BSI BS EN IS0 YbO8-ENGL 1778 W lb2Libb7 07LOZYl b57 W EUROPEAN STANDARD NORME EUROPENNE EURWSCHENORM EN IS0 4608 May 1998 ICs 83.080.20 Descriptors: 888 IS0 document English version Plastics - Homopolymer and copolymer resins of vinyl chloride for general use - Determination of pl
10、asticizer absorption at room temperature (IS0 4608: 1 998) KWtSbfh - VIIIIOM(VC)HV Und Cbpdymem Mr allgemeine Anwendungen - Bestimmung der Weichmacheraufnahme bei Raumtempemur (Is0 4608:1998) This European stsndardwas approved by CEN on9Aprlll998. CEN members are bound to oomply with the CENEENELEC
11、Internal Regulations whlch stipuiate the amdilions for giving this Eutopean Standard the status of a natknal standad without any alteratkn. Up-to-date lists and MMiogrepMcal references concerning such national rrtandards may be obtained on qicaion tothe Cenirai secretarlet orto any CEN member. Thio
12、European Standard exiss in three omdal vembns (English, French. Germen). A verdon in any oaier language made by iransiation uider the mpondbilityoi eCEN member into its own language and naiRed to the Central sscretarht has the 881118 status a8 aie amdei versions. CEN members am the national standard
13、s bodies ot Awtria, Belgium, Czech Repubiic. Dew, Finland, France, Gemany, amce, Iceland, Ireland, Italy, Luxembourg, Netheilands, Noway, Porhigal, speln, Sweden, Swizetiand and United Kingdom. EUROPEAN COMMITIEE #3R STANDARDiZATION EUROPISCHES KOMITEE FOR NORMUNO COMITB EUROPBEN DE NORMALISATION Re
14、f. No. EN IS0 4808:1998 E Foreword The text of the International Standard IS0 4608:1998 has been prepared by Technical Committee iSO/rC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics“, the secretariat of which is held by IBN. This European Standard shall be giventhe sta
15、tus of a national standard, either by publication of an identical text or by endorsement, at the latest by November 1998, and conflicting national standards shall be withdrawn at the latest by November 1998. According to the CEWCENELEC Internal Regulations, the national standards organizations of th
16、e 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 Kingdom. NOTE FROM CENES: The foreword is su
17、sceptible to be anmended on reception of the German language version. The confirmed or amended foreword, and when appropriate, the normative annex 24 for the references to international publications with their relevant European publications will be circulated with the German version. Endowment notic
18、e The text of the International Standard IS0 4608:1998 was approved by CEN as a European Standard without any modification. - STD-BSI BS EN IS0 9bOB-ENGL L778 Lb2Libb7 07LOZLi3 9ZT EN IS0 4608:1998 INTERNATIONAL IS0 STANDARD 4608 Third edition 1998-05-01 Plastics - Homopolymer and copolymer resins o
19、f vinyl chloride for general use - Determination of plasticizer absorption at room temperature Plastiques - Rsines dhomopolymeres et de copolymres de chlorure de vinyle usages gnraux - Dtermination de la pnse de plastifiant temprature ambiante STD-BSI BS EN IS0 VbO8-ENGL 1778 m Lb29bbS 07L0299 3bb m
20、 EN IS0 4608:1998 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing Internationai Standards is normally carried out through IS0 technical committees. Each member body interested in a sub
21、ject 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 pari in the work. IS0 collaborates closely with the International Electrotechnical Commission (
22、IEC) on all matters of electrotechnical standardization. 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 Yo of the member bodies casting a vote. International S
23、tandard IS0 4608 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. This third edition cancels and replaces the second edition (IS0 4608:1984), I which has been technically revised. esCilptOiS: plastics. vinyl resins, polyvinyl chloride, tests, deter
24、mination, plasticizer absorption. i STD-BSI BS EN IS0 4bOB-ENGL 1998 m lb24bb9 0730245 2T2 m EN IS0 4608:1998 Plastics - Homopolymer and copolymer resins of vinyl chloride for general use - Determination of plasticizer absorption at room temperature 1 Scope This International Standard specifies a me
25、thod for determining plasticizer absorption at room temperature. It is applicable to PVC general-purpose resins and filler resins (designated “G“ and “F“ in IS0 1060-1 :1998, Plastics - Homopolymer and copolymer resins of vinyl chloride - Patt 7: Designation system and basis for specifications). The
26、 object of the test is to determine the quantity of plasticizer absorbed by a resin at room temperature to give a dry mixture. The results give a general indication of the plasticizer absorption of a resin at room temperature. They indicate the usefulness of resins for the manufacture of plasticized
27、 dry blends, particularly when taken in conjunction with the results of plasticizer absorption tests under hot conditions. - = - = - - * * m 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of ?his International Standard. A
28、t the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and IS0
29、maintain registers of currently valid international Standards. IS0 1385-1 :1977, Phthalate esters for industrial use - Methods of test - Patt 1: General. 3 Principle An excess of bis-(2-ethylhexyl) phthalate (DOP) is added to a specified amount of resin. The mixture is then centrifuged under defined
30、 conditions and the amount of plasticizer retained by the resin determined. 4 Apparatus and materials Ordinary laboratory apparatus, plus the following: 4.1 Balance, capable of weighing to 0,l mg. 4.2 Burette, for example 50 cm3, graduated at 0,l cm3 intervals. 1 STD-BSI BS EN IS0 4bOB-ENGL 1958 Lb2
31、4bb9 071024b 139 EN IS0 4608:1998 4.3 Centrifuge, whose rotor turns in a horizontal plane and which has an acceleration under the test conditions of 24 500 m-s“ to 29 500 m.s- measured at the bottoms of the tubes, with, if necessary, a cooling system to prevent the temperature of the mixture from ex
32、ceeding 30 OC at the end of centrifuging for 60 min. NOTE- It is permissible to use different centrifuging conditions, .e. a different acceleration, a different time and smaller centrifuge tubes (see 4.4), provided that it has been verified that the results obtained are equivalent. 4.4 Centrifuge tu
33、bes, to fit the centrifuge used, each consisting either of a tube, made of glass or another material, with a conical bottom pierced by a hole of about 0,8 mm diameter (see figure 1) or of a cylindrical tube fitted at one end with a sieve plate on which a filter paper can be placed (see figure 2). Th
34、e sieve plate is pierced by holes of diameter approximately 0.8 mm. The holes are arranged concentrically approximately 4 mm apart. 4.5 Sheaths, made of polyamide, polyethylene or any other suitable material, to fit the centrifuge used, with a reduction tube at the bottom to support the centrifuge t
35、ube (see figure 1 or 2). Dimensions in millimetres Key 1 Centrifugetube 2 Sheath 3 Reductiontube 0 24 0 20.5 . I + a f Figure 1 - Example of centrifuge tube (without sieve plate) and sheath 2 STD*BSI BS EN IS0 YbOB-ENGL 11998 Lb2LibbS O7110247 075 EN IS0 4608:1998 Dimensions in millimetres Key 1 Cen
36、trifuge tube 2 Sheath 3 Reduction tube 4 Sieve plate 0 21 U Figure 2 - Example of centrifuge tube (with sieve plate) and sheath 4.6 Cotton wool, pharmaceutical quality, having a DOP absorption measured under the test conditions (see 5.1) of approximately 10 %, or, if a centrifuge tube with a sieve p
37、late is used, filter paper, with a diameter is equal to the inner diameter of the centrifuge tube. NOTE - Alternative materials to cotton wool may be used if it can be shown that they produce equivalent results, for example glass wool and PTFE-coated polyester felt. 3 STD*BSI BS EN IS0 LibOB-ENGL 17
38、78 m 1b24bb7 0710248 TCIL m EN IS0 4608:1998 4.7 Bis-(2-ethylhexyl) phthalate (DOP) When tested by the methods described in IS0 1385-1 at 20 OC, the DOP plasticizer used shall have the following properties: Density 0,982 g/cm3 to 0,984 g/cM Refractive index 1,486 to 1,487 Dynamic viscosity 77 mPas t
39、o 83 mPa.s 5 Procedure 5.1 Measurement of DOP absorbed by the cotton wool or filter paper Following the procedure indicated in 5.2, carry out a blank test with a piece of cotton wool having a mass of 100 mg f 2 mg or with a filter paper (if a centrifuge tube with a sieve plate is used), but without
40、any resin. Determine the amount of DOP absorbed by the cotton wool or filter paper, in grams. 5.2 Determination Weigh a piece of cotton wool (100 mg f 2 mg), place it in the centrifuge tube and pack it down slightly. When working with a centrifuge tube with a sieve plate, place a filter paper on the
41、 sieve plate. Weigh the tube and cotton wool or filter paper to the nearest 0,l mg. Weigh directly into the tube 2,000 g f 0,001 g, to the nearest 0,l mg, of the resin under test. From the burette, run into the tube 4 cm3 of DOP and allow it to stand for about 10 min. NOTE - If smaller centrifuge tu
42、bes are used (see the note to 4.3), the following smaller quantities of material may be used: - 1 g of resin under test; - 2 cm3 of DOP. Put the tube into its sheath and place the whole into one of the Compartments of the centrifuge rotor (the other compartments being occupied by tubes containing ot
43、her resin samples, all the tubes being balanced). Set the centrifuge to give an acceleration of 24 500 m.s-2 to 29 500 m-s-2 at the bottoms of the tubes for 60 min. If necessary, switch on the cooling device during centrifuging. The temperature shall not exceed 30 “C. Take the tube from its sheath,
44、carefully wipe it to remove any DOP on the outside and weigh it to the nearest 0.1 mg. 6 Expression of results The room temperature plasticizer absorption, expressed as parts of DOP absorbed per 100 parts of resin (p.h.r.), is given by the formula 4 - STD.BS1 BS EN IS0 LibOB-ENGL 1998 m Lb24bb 07L02
45、9 9118 W EN IS0 4608:1998 I where I Plastlcizer absorption (?/O) approx.5 I approx.21 I approx.40 mo is the mass, in grams, of DOP absorbed by the cotton wool or filter paper in the blank test (see 5.1); ml is the mass, in grams, of the centrifuge tube plus cotton wool or filter paper (see 5.2); m2
46、is the mass, in grams, of the centrifuge tube plus cotton wool or filter paper and resin sample (see 5.2); m3 is the mass, in grams, of the centrifuge tube plus cotton wool or filter paper, resin and DOP absorbed, after centrifuging (see 5.2). 7 Precision Interlaboratory trials conducted on three re
47、sins in five laboratories have shown that the repeatability standard deviation s, (within the same laboratory) and the reproducibility standard deviation sR (between different laboratories) depend on the plasticizer absorption, as shown in table 1. Table 1 - Precision data I sr - The centrifuge tube
48、s and sheaths used (figure 1 and 2) have only a minor influence. Ii E * m * 8 Testreport The test report shall include the following information: a) a reference to this International Standard; b) all details necessary for identification of the sample tested; c) the centrifuging conditions (accelerat
49、ion and time), if different from those specified in 5.2; d) the quantities of resin and DOP used, if different from those specified in 5.2; e) the result of the test; 9 the date of the test. 5 BS EN IS0 4608:1998 BS 2782-4: M&hod 4543: 1998 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is i
