1、General methods of test for pigments and extenders Part 5. Determination of oil absorption value The European Standard EN IS0 787-5 : 1995 has the stakus of a British Standard ICs 87.060.1087.060.30 BS EN IS0 787-5 : 1995 CEN EN*IS0*787-5 95 m 3404589 OlLbb28 944 W EUROPEXN STANDARD Nom EUROPENNE EU
2、ROPAISC NOW EN IS0 787-5 August 1995 1CC 8T.060.10 87.060.30 escnptors Paints, pignwrits, tests, density measurement, pyknonietric analysis, test equipment. pyknorneters English version General methods of test for pigments and extenders - Part 5: Determination of oil absorption value (IS0 787-5 : 19
3、80) Mthodes gnrales dessai des pigments et matires de charge - Partie 5: Dtermination (IS0 787-5 : 1980) Allgemeine mufverfahren fr pigmente und Fuktoffe - Teil 5: Bestinunung der Olzahl de la prise dhuile (IS0 787-5 : 1980) This European Standard was approved by CEN on 199503-23. CEN members are bo
4、und to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a nationai standard without any alteration. Up-to-date lists and bibliographieal references concerning such national standards may be obtained on application to the C
5、entral 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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status
6、as the officiai versions. CEN members are the national standasds bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit
7、Europen de Nonnalisati on Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 0 1995 AU rights of reproduction and communication in any form and by any means reserved in all countrieS to CEN and its members. Ref. No. EN IS0 7875 : 1995 E CEN EN*IS0*787-5 95 340458
8、9 OLlbb30 5T2 EN IS0 787-5 : 1995 Foreword The text of the International Standard from ISOflC 35, Paints and varnishes, of the international Organization for Standardization (1%) has been taken over as a European Standard by the Technical Committee CENITC 298, Pigments and extenders This European St
9、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 1996, and conflicting national standards sha be withdrawn at the latest by February 1996. According to CENKENELEC Internai Regulations, the foiiowing count
10、ries are bound to impiement this European Standard Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugai, Spain, Sweden, Switzerland and the United Kingdom. CEN EN*IS0*787-5 75 3404589 OLLbb3l.i Y39 R i, National foreword This
11、 revision of Part 87 of BS 3483 has been prepared under the direction of the Pigments, Paints and Varnishes Standards Committee. It is identical with IS0 787/5 General methods of test for pigments and extenders - Part 5 : Determination of oil absorption value published in 1980 by the Intemational Or
12、ganization for Standardization (Ise). This Part of BS 3483 supersedes BS 3483 : Part 87 : 1974 which is withdrawn. in 1995 the European Commim for Standardization (CEN) accepted IS0 787-5 : 198c. A as European Standard EN IS0 787-5 : 1995. As a consequence of implementing the European Standard this
13、British Standard is renumbered as Bs EN Terminology and conventions. The text of the international standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attentio
14、n is especially drawn to the following. The comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words This part of IS0 787 and International Standard appear, referring to this standard, they shou
15、ld be read as This Part of BS 3483 and British Standard respectively. / 787-5. Cross-references Intemational standard CorrsrpondBria+hStimdard IS0 842 - 1974 BS 4726 : 1971 Methods for sampling raw materials for paints and varnishes (Technically equivalent) The Technical Committee has reviewed the p
16、rovisions of IS0 150 and ISO/R 385, to which references are made in the text, and has decided that they are acceptable for use in conjunction with this standard. Related British Standards for IS0 1501980 are BS 242, 243, 259, 632 : 1969 Linseed oil. A related British Standard for ISO/R 385 was BS 84
17、6 : 1962t. Additional information. In clause 7 of IS0 787/5-1980 it is stated that duplicate determinations are to be carried out, but no indication is given of the acceptable difference between the two results. In implementing this standard in the United Kingdom, it is recommended that the result o
18、f the test (clause 9c) should be reported as the mean of the two determinations and that, if the determinations differ by more than 10 96 of the mean, wherever possible both the sampling (clause 6) and the procedure (clause 7) should be repeated Compliance with a British Standard does not of itself
19、confer immunity from legal obligations. This change has been mported to the IS0 in a proposal to amend the text of the international standard. t Now withdrawn, having been superseded by ES 846 : 1980 Specification for burettes. British Standards Institution BS 3483 : Part 87 : 1982 Expected oil abso
20、rption value Mass of the test portion d/100 g 9 less than 10 20 10 to 30 10 30 to 50 5 50 to 80 2 over 80 1 O introduction L- This document is a part of IS0 787, Generalmethods of fest for pigments and extenders. 4 Reagent Refined linseed oil, complying with the requirements of IS0 150, and having a
21、n acid value of 5.0 to 7,O mg KOH per gram. 5 Apparatus 1 Scope and field of application This part of IS0 787 specifies a general method of test for determining the oil absorption value of a sample of pigment or extender. The oil absorption value is usually required to be compared with the value det
22、ermined at the same time on an agreed sample of the product. NOTE - When this general method is applicable to a given pigment or extender, only a cross-reference to it should be included in the Interna- tional Standard relating to that pigment or extender, with a note of any detailed modification wh
23、ich may be needed in view of the special pro- perties of the material in question. Only when this general method is not applicable to a particular material should a special method for determination of oil absorption value be specified. 2 References IS0 150, Raw, refined and boiled linseed oil for pa
24、ints and var- nishes - Specifications and methods of test. ISO/R 385, Burettes IS0 842, Raw materials for paints and varnishes - Sampling. 3 Definition For the purpose of this International Standard, the following definition applies. oil absorption value : The quantity of refined linseed oil that is
25、 absorbed under defined conditions by a sample of pigment or extender. NOTE - The oil absorption value may be expressed either on a volume/mass basis or on a masc/mas basis. 5.1 400 mm. Plate, of ground glass or marble, at least 300 mm x 5.2 Palette knife, with a tapered steel blade of the approx- i
26、mate dimensions 140 to 150 mm long, 20 to 25 mm wide at its widest point andnot less than 12,5 mm wide at its narrowest point. 5.3 Burette, of capacity 10 mi, complying with the re- quirements of ISO/R 385. 5.4 $4 Balance, with an appropriate accuracy. i 6 Sampling Take a representative sample of th
27、e material to be tested as described in IS0 842. 7 Procedure “Carry out the determination in duplicate. 7.1 Test portion Weigh the appropriate quantity of the sample in accordance with the expected oil absorption value as indicated in the table below. See the paragraph headed Additional information
28、in the national foreword. 2 I- 7.2 Determination CEN ENgISOx787-5 95 = 3404589 OLLbb33 201 i Place the test portion (7.1) on the plate (5.1). Add the linseed oil slowly, 4 or 5 drops at a time, from the burette (5.3). After each addition, rub the oil into the product with the palette knife (5.2). an
29、d continue the addition of oil at this rate until con- glomerates of oil and product are formed. From this point, add the oil 1 drop at a time and follow each addition of oil by thoroughly rubbing with the palette knife. Cease theaddition of oil when a paste of smooth consistency has been formed. Th
30、is paste should just spread without cracking or crumbling and should only just adhere to the plate. Read the burette and note the quantity of oil used. The time taken for the complete operation should be between 20 and 25 min and during this time, the whole product mass shall be manipulated with max
31、imum effort by the operator. Where a comparison is required with the oil absorption value of an agreed sample of product, repeat the test in exactly the same way using the agreed sample. 8 Expression of results The oil absorption value, expressed either in millilitres of oil per 100 g of product or
32、in grams of oil per 100 g of product, is given respectively by formulae (1) and (2) : 100 v m Publications referred to See the national foreword. . . . (1) 93V rn BS 3483 : Part B7 : 1982 (2) where V k the volume, in millilitres, of oil required; rn is the mass, in grams, of the test portion. Report
33、 the result to the nearest millilitre per 100 g or gram per loo g. 9 Test report The test report shall contain at least the following information : a) the type and identification of the product tested; b) a reference to this International Standard (IS0 787/5) or to a corresponding national standard;
34、 cl the result of the test as indicated in clause 8; d) any deviation, by agreement or otherwise, from the procedure specified; e) the date of the test. For information about BSI services relating to third party certification to suitable British Standard product specifications, schemes for the regis
35、tration of firms of assessed capabil, testing and inspection faCilities and Technical Help to Exporters. please contact the Director, Quai Assurance Division, BSI, Maylands Avenue, Hemel Hempstead, Hem HP2 4SQ Tel Hemel Hempstead 31 1 1. 3 1 : Arnd. No. Date of issue ZL=7 t- 2qs CEN ENJIS08787-5 95
36、= 3404589 Ollbb3ir 148 S.+sk& ?L BS 3483 : Part 87 : 1982 IS0 787/5-1980 This British Standard, having been prepared under the direction of the Pigments, Paints and Varnishes Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 November 1982. British
37、 Standards Institution . 2 Park Street London W1A 2BS - Telephone 01-629 9000 - Telex 266933 PVW1 .I -. 821 1-2-1.3k-6 .- - . e_* i - n n U U -0 - - U= AMD 8687 Amendment No. 1 published and effective from 15 December 1995 to BS 3483 : Part B7 : 1982 Methods of testing pigments for paints Part B7. D
38、etermination of oil absorption value NOTE. The European Committee for Standardization (CEN) has accepted IS0 787-5 : 1980 as a European Standard designated as EN IS0 7875 : 1995. This amendment implements EN IS0 787-5 : 1995 as a British Standard in the ES EN IS0 series. Implementation of European S
39、tandard &ont page Delete ail the text before the national foreword Nationai foreword At the end of paragraph 1, insert the following paragraph. In 1995 the European Committee for Standardization (CEN) accepted IS0 787-5 : 1980 as European Standard EN IS0 787-5 : 1995. As a consequence of implementin
40、g the European Standard this British Standard is renumbered as BS EN IS0 787-5. AMD 8687/December 1995 _ New front cover, EN title page and foreword Attach the new front cover, EN title page and foreword. AMD 8687/Deeember 1996 . 95124.4k- PI Product code 00637531 BRITISH STANDARD General methods of
41、 test for pigments and extenders Part 5. Determination of oil absorption value The European Standard EN IS0 787-5 : 1995 has the status of a British Standard BS EN IS0 787-5 : 1995 EUROPEAN NoFMI3 EUROPENNE EUROPAISCHE NORM - CEN EN*ISO*?8?-5 95 = 3404589 BLLbb37 957 - EN IS0 787-5 August 1995 ILS 8
42、7 O60 IO. 87.060.30 Ikscnptors Paints, pigments. tests, density nieasurement, pyknometnc analysis, test equipment, pyknometerc English version General methods of test for pigments and extenders - Part 5: Determination of oil absorption value (IS0 787-5 1980) Mthodes gnrales dessai des pigments et ma
43、tires de charge - Partie 5: Dtermination (IS0 787-5 : 1980) Allgemeine Prfverfahren fur Pigmente und Fllstoffe - Teil 5: Bestimmung der Izahl de la prise dhuile (IS0 787-5 : 1980) Thic European Standard was approved by CEN on 1995-03-23. CEN members are bound to comply with the CENICENELEC Internal
44、Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliograpiiical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. T
45、his European Standard exists in three officiai versions (English, French, German). A version in any other language made by translation tinder the responsibility of a CEN member into its own language and notified to the Centrai Secretariat has the same status as the official versions. CEN members are
46、 the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normaiisation Europisches Komi
47、tee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1995 AU rights of reproduction and communication in any form and by any means reserved in ali countries to CEN and its members. Ref. No. EN IS0 787-5 : 1995 E - - CEN EN*IS0*787-5 95 3404589 OLLbb38 893 - . Page 2 EN IS0 787-5
48、 : 1995 Foreword The text of the International Standard from ISOC 35, Pallits and varnishes, of the international Organization for Standardization (EO) has been taken over as a European Standard by the Technical Committee CENiTC 298, Pigments and extenders. This European Standard shall be given the
49、status of a national standard, either by publication of an identical text or by endorsement, at the latest by Februaqy 1996, and conflicting national standards shall be withdrawn at the latest by February 1996. According to CENKENELEC internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzer
