1、BRITISH STANDARDBinders for paints and varnishes Raw tung oil Requirements and methods of testICS 87.060.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g4
2、7g36g58BS EN ISO277:2010National forewordThis British Standard is the UK implementation of EN ISO 277:2010. It is identical to ISO 277:2002. It supersedes BS ISO 277:2002 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/3, Paint media and related pr
3、oducts.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunit
4、y from legal obligations.BS EN ISO 277:2010This British Standard, having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 August 2002 BSI 2011Amendments/corrig
5、enda issued since publicationDate Comments 28 February 2011 This corrigendum renumbers BS ISO 277:2002 as BS EN ISO 277:2010ISBN 978 0 580 71427 6EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 277 November 2010 ICS 87.060.20 English Version Binders for paints and varnishes - Raw tung oil -
6、 Requirements and methods of test (ISO 277:2002) Liants pour peintures et vernis - Huiles de bois de Chine brutes - Exigences et mthodes dessai (ISO 277:2002) Bindemittel fr Beschichtungsstoffe - Rohes Holzl - Anforderungen und Prfverfahren (ISO 277:2002) This European Standard was approved by CEN o
7、n 16 October 2010. 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 standards m
8、ay be obtained on application to the CEN 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 notified to the
9、CEN 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, Lithuania, Luxembourg, Malta
10、, 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 2010 CEN All rights of exploi
11、tation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 277:2010: E3 Foreword The text of ISO 277:2002 has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” of the International Organization for Standardization (ISO) and has been taken ove
12、r as EN ISO 277:2010 by Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. 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 May 2011, and conflicting nat
13、ional standards shall be withdrawn at the latest by May 2011. 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. According to the CEN/CEN
14、ELEC 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, Latvia, Lithuan
15、ia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 277:2002 has been approved by CEN as a EN ISO 277:2010 without any modification. BS EN ISO 277:2010EN ISO 277:2010 (E)1Bind
16、ers for paints and varnishes Raw tung oil Requirements and methods of test 1 Scope This International Standard specifies the requirements and the corresponding methods of test for two types of raw tung oil suitable for paints and varnishes. It is not intended to apply to tung oils which are wholly o
17、r partly solidified as a result of polymerization. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these pu
18、blications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to
19、 applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 150:1980, Raw, refined and boiled linseed oil for paints and varnishes Specifications and methods of test ISO 654:1980, Short solid-stem thermometers for precision use ISO 2114:2000, Plastics (polyste
20、r resins) and paints and varnishes (binders) Determination of partial acid value and total acid value ISO 2811-1:1997, Paints and varnishes Determination of density Part 1: Pyknometer method ISO 3681:1996, Binders for paints and varnishes Determination of saponification value Titrimetric method ISO
21、4630:1997, Binders for paints and varnishes Estimation of colour of clear liquids by the Gardner colour scale ISO 5508:1990, Animal and vegetable fats and oils Analysis by gas chromatography of methyl esters of fatty acids ISO 5509:2000, Animal and vegetable fats and oils Preparation of methyl ester
22、s of fatty acids ISO 5661:1983, Petroleum products Hydrocarbon liquids Determination of refractive index ISO 10336:1997, Crude petroleum Determination of water Potentiometric Karl Fischer titration method ISO 15528:2000, Paints, varnishes and raw materials for paints and varnishes Sampling BS EN ISO
23、 277:2010EN ISO 277:2010 (E)2 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 raw tung oil the product obtained directly by expression or extraction from the seeds of different species of the genus Aleurites (family Euphorbiacea
24、e) only 3.2 type F oil raw tung oil derived substantially from seeds of the species Aleurites fordii Hemsley 3.3 type M oil raw tung oil derived substantially from seeds of the species Aleurites montana Wilson 4 Requirements and test methods The two types of raw tung oil shall meet the requirements
25、given in Table 1. 5 Methods of test 5.1 General During the analyses, use only reagents of recognized analytical grade, and only distilled water or water of equivalent purity. 5.2 Sampling Take a representative sample of the oil to be tested, as described in ISO 15528. 5.3 Determination of gelation t
26、ime 5.3.1 Apparatus Ordinary laboratory apparatus and glassware, together with the following: 5.3.1.1 Glass test-tubes, 150 mm long and 16 mm nominal diameter, of wall thickness not greater than 1 mm. Each tube shall have a cork, having a hole through which a glass rod of diameter 3 mm to 4 mm can m
27、ove freely. 5.3.1.2 Electric heating block. 5.3.1.3 Thermometer, STC/0,5/245/305 complying with the requirements of ISO 654. 5.3.1.4 Stop-clock. 5.3.1.5 Glass rods, of diameter 3 mm to 4 mm. BS EN ISO 277:2010EN ISO 277:2010 (E)3Table 1 Required characteristics and test methods for raw tung oil Requ
28、irement Characteristic Type F tung oil Type M tung oil Test method at 20 C g/ml 0,935 to 0,940 0,930 to 0,940 Density at 23 Cag/ml 0,933 to 0,938 0,928 to 0,938 ISO 2811-1 at 20 C 1,517 to 1,521 1,510 to 1,518 Refractive index at 23 Cb1,516 to 1,521 1,509 to 1,517 ISO 5661 Colour (Gardner) max. 8cma
29、x. 8cISO 4630 Acid numberdmg KOH/g max. 5 max. 5 ISO 2114 Saponification number mg KOH/g 189 to 195 189 to 195 ISO 3661 Unsaponifiable-matter content % (by mass) max. 1 max. 1 ISO 150:1980, Annex Iodine number g iodine/100 g min. 205 e Gelation time minutes max. 15 max. 22 Subclause 5.3 Volatile-mat
30、ter (water) content % (by mass) max. 0,5 max. 0,5 ISO 10336 Insoluble-bromide content Negative result Negative result Subclause 5.4 Sediment and turbidity No insoluble sediment is allowed after 24 h storage; the raw tung oil shall be clear. No insoluble sediment is allowed after 24 h storage; the ra
31、w tung oil shall be clear. Fatty-acid composition % (by mass) of each fatty acid To be agreed between the interested partiesfTo be agreed between the interested partiesfISO 5508 and ISO 5509 aThe change in density per degree Celsius is 0,000 68. bThe change in refractive index per degree Celsius is
32、0,000 35.cThis corresponds to an iodine colour number of 20. dThe free-acid content, calculated as oleic acid, shall not exceed 2,5 % (by mass). eCalculate the iodine number from the number of double bonds as given by the fatty-acid composition. fTypical values of the contents of the fatty acids in
33、raw tung oil are given in Table 2.5.3.2 Preparation of sample Mix the sample of oil thoroughly by shaking. 5.3.3 Procedure Carry out the determination in duplicate. Pour 5 ml of the mixed sample into one of the test-tubes (5.3.1.1) and fit the test-tube with its cork and a glass rod (5.3.1.5). Place
34、 the test-tube in the heating block (5.3.1.2), heated to a temperature of 275 C to 277 C. Support the test-tube so that its bottom is approximately 15 mm above the base of the heating block. Similarly, support the thermometer (5.3.1.3) with the bottom of its bulb approximately 15 mm above the base o
35、f the heating block, adjacent to the test-tube. BS EN ISO 277:2010EN ISO 277:2010 (E)4 Start the stop-clock (5.3.1.4) and, when the test portion has been in the heating block for 12 min, raise the glass rod approximately 10 mm at intervals of 15 s. Record the time when the test sample has gelled, as
36、 shown by the test-tube rising with the rod. If the results of the two determinations differ by more than 30 s, repeat the test on another two 5 ml test samples of the oil. 5.4 Insoluble-bromide test 5.4.1 Reagents 5.4.1.1 Diethyl ether. 5.4.1.2 Bromine. 5.4.2 Preparation of sample Mix the sample of
37、 oil thoroughly by shaking. 5.4.3 Procedure Dissolve 1 ml of the mixed sample in 20 ml of diethyl ether (5.4.1.1) in a test-tube or a small flask, mix the solution well and place the test-tube or small flask in cold water. Add bromine (5.4.1.2) from a fine pipette, drop by drop, avoiding vigorous sh
38、aking, until a considerable excess is present, as indicated by a persistent strong red colour. Shake the test-tube or flask well, allow to stand in cold water for 15 min and examine the solution. If the solution is clear, this indicates that no insoluble bromide has been formed. 6 Typical values of
39、fatty-acid contents Table 2 gives typical values of the fatty-acid contents of raw tung oil, determined by gas-chromatographic analysis as described in ISO 5508 and ISO 5509. Table 2 Typical values of fatty-acid contents of raw tung oil Content Fatty acid % (by mass) Palmitic acid C16:0 Stearic acid
40、 C18:0 Oleic acid C18:1 Linoleic acid C18:2 Linolenic acid C18:3 -Eleostearic acid C18:3 -Eleostearic acid C18:3 Others (not identified) 2 to 3 1,5 to 2,5 4,5 to 8 6 to 9 0,1 to 0,3 64 to 80 4 to 15 0,3 to 1 BS EN ISO 277:2010EN ISO 277:2010 (E)57 Test report The test report shall contain at least t
41、he following information: a) a reference to this International Standard (ISO 277); b) all details necessary for complete identification of the product tested (manufacturer, trade name, batch number, etc.); c) the results of the tests, and whether or not the product complies with the relevant specifi
42、cation limits; d) any deviation, by agreement or otherwise, from the test methods specified; e) any specific agreements between the interested parties; f) the dates of the tests. BS EN ISO 277:2010EN ISO 277:2010 (E)BSI GroupHeadquarters 389 Chiswick High Road, London, W4 4AL, UK Tel +44 (0)20 8996
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