1、BRITISH STANDARDBS ISO 3865:2005Rubber, vulcanized or thermoplastic Methods of test for staining in contact with organic materialICS 83.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g
2、3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 3865:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 26 August 2005 BSI 26 August 2005ISBN 0 580 46389 3National forewordThis British Standard reproduces verbatim ISO 3865:2005 and implements
3、it withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/22, Physical testing of rubber, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which
4、 implement international 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 publication does not p
5、urport 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 international/European commi
6、ttee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, p
7、ages 1 to 9 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Commentsas the UK national standard. It supersedes BS ISO 3865:1997 which is Reference numberISO 3865:2005(E)INTERNATIONAL STA
8、NDARD ISO3865Fourth edition2005-07-01Rubber, vulcanized or thermoplastic Methods of test for staining in contact with organic material Caoutchouc vulcanis ou thermoplastique Mthodes dessai pour dterminer le tachage lors du contact avec des matires organiques BS ISO 3865:2005ii iiiForeword ISO (the I
9、nternational 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 ISO technical committees. Each member body interested in a subject for which a technical committee
10、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 closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnica
11、l 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. Draft International Standards adopted by the technical committees are circulated to the member bod
12、ies 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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any
13、 or all such patent rights. ISO 3865 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analyses. This fourth edition cancels and replaces the third edition (ISO 3865:1997), which has been technically revised. BS ISO 3865:2005iv Introduction Whe
14、n rubber is in contact with organic material, such as paints or varnishes, plastics, rubber, under conditions of heat, pressure and light, staining can occur on the surface in contact with rubber, on the surface adjacent to the rubber or on the surface of the organic material which covers the rubber
15、. In addition, in the presence of water, constituents of the rubber can be leached out which can cause staining on surfaces with which the water subsequently comes into contact. BS ISO 3865:20051Rubber, vulcanized or thermoplastic Methods of test for staining in contact with organic material WARNING
16、 Persons using this International Standard shall be familiar with normal laboratory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure
17、 compliance with any national regulatory conditions. 1 Scope This International Standard specifies three methods for estimating the staining of organic finishes (in the following called “organic material”) by vulcanized or thermoplastic rubber: method A: contact and migration staining; method B: ext
18、raction staining; method C: penetration staining; as defined in Clause 3. 2 Normative references 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 referenc
19、ed document (including any amendments) applies. ISO 105-A01, Textiles Tests for colour fastness Part A01: General principles of testing ISO 105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour ISO 105-B01, Textiles Tests for colour fastness Part B01: Colour
20、 fastness to light: Daylight ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 2393, Rubber test mixes Preparation, mixing and vulcanization Equipment and procedures ISO 4892-1, Plastics Methods of exposure to laboratory light sources Part 1: General guida
21、nce ISO 4892-2, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc sources ISO 7724-2, Paints and varnishes Colorimetry Part 2: Colour measurement ISO 7724-3:1984, Paints and varnishes Colorimetry Part 3: Calculation of colour differences BS ISO 3865:20052 3 Terms and definit
22、ions For the purposes of this document, the following terms and definitions apply. 3.1 contact stain stain which occurs on the surface of the organic material directly in contact with the rubber 3.2 migration stain stain which occurs on the surface of the organic material surrounding the contact are
23、a 3.3 extraction stain stain which occurs on the surface of the organic material as a result of contact with a liquid containing leached-out constituents of the rubber 3.4 penetration stain stain which occurs on the surface of a veneer layer of an organic material which is bonded to the rubber surfa
24、ce 4 Principle 4.1 Method A Determination of contact and migration staining The rubber to be tested is placed in direct contact with the specified organic material and then exposed to heat and/or artificial light. 4.2 Method B Determination of extraction staining The rubber to be tested is subjected
25、 to a test liquid which afterwards contacts the organic material. This may be followed by irradiation of the organic material. 4.3 Method C Determination of penetration staining A light-coloured veneer or lacquer of specified material is applied to the rubber to be tested and then exposed to heat fo
26、llowed by artificial light. 4.4 Assessment of staining The stain is assessed qualitatively by visual inspection or quantitatively by comparison with a grey scale or by using a reflectance spectrometer. 5 Apparatus Use the following apparatus for the methods indicated. 5.1 Ageing air oven, conforming
27、 to ISO 188. 5.2 Artificial light source, consisting of a xenon-arc lamp, filtered to give a spectral distribution corresponding to that of sunlight, as specified in ISO 4892-2, and in 9.1 and 9.2. 5.3 Irradiation chamber, containing the lamp and the test piece racks, designed to meet the requiremen
28、ts in 9.3 and 9.4. BS ISO 3865:200535.4 Thermocouple or black panel thermometer, as specified in ISO 4892-1 for measurement of surface temperature. 5.5 Suitable apparatus for measuring the light intensity over the range of wavelengths given in 9.1 (recommended, although not mandatory). 5.6 Blue dyed
29、 wool standards, as specified in ISO 105-B01. 5.7 Grey scale, as specified in ISO 105-A02. 5.8 Reflectance spectrometer, operating in the range 400 nm to 600 nm. Use the reflectance spectrometer specified in ISO 7724-2. 5.9 Beaker or dripping apparatus (in method B). 5.10 Dripping and drying frame,
30、for finishing with lacquer (in method C). 6 Test pieces 6.1 Rubber test pieces Rubber test pieces shall be rectangular in shape, of uniform thickness and preferably cut from sheet 2 mm 0,2 mm thick. The minimum dimensions shall be for method A: 12 mm 25 mm, for method B.1: 25 mm 150 mm, for method B
31、.2: 3 pieces with a total mass of 5 g 0,2 g, for method C: 12 mm 25 mm. Test pieces for method C shall be cut from samples prepared in accordance with 6.3. Test pieces may also be cut from finished products, in which case they may be cleaned of extraneous contamination before test with a 2 % non-alk
32、aline soap solution. 6.2 Metal or plastics panels for methods A and B The dimensions of metal or plastics panels shall meet the requirements specified in 8.1 or 8.2, but otherwise are not critical. Panels shall be coated with a material to be agreed between purchaser and supplier. If not otherwise s
33、pecified, a white acrylic-based stoving enamel shall be used. This lacquer shall be dried in the oven (5.1) for 30 min at 125 C and tests shall be commenced between 24 h and 48 h after drying. If other times are used, they shall be stated in the test report. 6.3 Test piece preparation for method C 6
34、.3.1 General A white or light-coloured non-discolouring rubber veneer, of a composition to be agreed between purchaser and supplier, shall be applied under pressure to a sheet of the test rubber. The veneer shall either be vulcanized with the test rubber or be applied as a paint on a previously prep
35、ared sheet of vulcanized or thermoplastic rubber. As agreed between the interested parties, test pieces may be taken from finished products with light-coloured veneered or lacquered surfaces, such as white tyre sidewalls. The method of construction and the sample thickness shall be mentioned in the
36、test report. BS ISO 3865:20054 6.3.2 Vulcanized test pieces and veneers All mixing shall be carried out in a thoroughly cleaned mixer, preferably in accordance with ISO 2393. The rubber shall be sheeted out to a thickness of 2,0 mm 0,2 mm, and protected on both sides by an inert material, such as st
37、arched cambric fabric or polyethylene sheet, until tested. A test piece shall be cut out to the required mould dimensions. The rubber veneer shall be calendered to a thickness of 0,5 mm 0,05 mm and stiffened on at least one side with a protective aluminium sheet. At the time of coating, one protecti
38、ve layer shall be removed from both the test rubber and the veneer, and the two exposed surfaces pressed firmly together, ensuring that the aluminium sheet remains on the external side of the rubber veneer. Pressure may be applied by a platen press or by rollers. The composite body, including the al
39、uminium sheet, shall be moulded and vulcanized in a platen press, taking care that the veneer and aluminium sheet are situated at the bottom side of the mould. The conditions of vulcanization shall be included in the test report. The protective surface on the veneer shall be left until used. 6.3.3 L
40、acquered test pieces Test pieces shall be immersed in a white, non-staining lacquer at a depth of 25 mm. The test pieces shall be hung on a suitable rack and dried. After drying, they shall be immersed a second time in the lacquer, then dried until the surface is non-tacky. Instead of lacquer, a pas
41、te prepared of the unvulcanized veneer in a suitable solvent (volume ratio 1:6) may be used. The procedure shall be the same as for lacquer. Aluminium foil dipped in the lacquer/paste may be used as a blank. The thickness of the lacquer and paste layer shall be agreed between the interested parties.
42、 If not otherwise specified, the thickness of the lacquer layer shall be about 0,1 mm, and the thickness of the paste layer shall be about 0,16 mm. 6.4 Blanks and reference samples 6.4.1 Blanks Blanks shall be prepared and treated in the same manner as the samples to be tested, except that the rubbe
43、r to be tested shall be replaced by an inert material. A suitable inert material, such as an aluminium sheet about 0,4 mm to 0,6 mm thick, may be used as an alternative to the rubber slab. 6.4.2 Reference samples Reference samples shall be prepared in the same way and with the same construction as t
44、he samples to be tested (6.1 to 6.3), but shall be protected from irradiation in an appropriate manner, i.e. by an appropriate covering during the irradiation exposure period. Also, part of the sample may be covered to act as a reference sample. 6.5 Conditioning of samples and test pieces For all te
45、st purposes, the minimum time between vulcanization and testing shall be 16 h. For non-product tests, the maximum time between vulcanization and testing shall be 4 weeks. For product tests, wherever possible, the time between vulcanization and testing shall not be more than 3 months. In other cases,
46、 tests shall be made within 2 months of the date of receipt of the product by the customer. BS ISO 3865:200557 Number of test pieces At least two test pieces shall be used. 8 Procedure 8.1 Method A Contact and migration staining A test piece in accordance with 6.1, method A, shall be used. Place the
47、 test piece between two painted metal or plastics panels (see 6.2). The dimensions of the panels shall be such that a rim of at least 20 mm width around the test piece is left uncovered. If two or more test pieces are placed between the same panels, the distance between the test pieces shall be at l
48、east 40 mm. Apply a pressure of 7 kPa 1 kPa, calculated on the area of the test piece, to the assembly. Store the loaded assembly in the oven (5.1) at 70 C 2 C for 2402h, taking care that no other volatile or vapour-producing materials that might affect staining are in the oven. After removal from t
49、he oven, wash one panel with distilled water containing about 2 % of a detergent which is free from alkalinity, and examine for both contact and migration staining in accordance with Clause 10. Expose the second panel, without the rubber test piece, to artificial light, the recommended conditions of irradiation being as given in Clause 9. Then wash the panel with distilled water containing about 2 % of a detergent which is free from alkalinity, and examine for both contact and migration staining in
