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1、INTERNATIONAL STANDARD IS0 14676 First edition 1997-07-I 5 Adhesives - Evaluation of the effectiveness of surface treatment techniques for alumitiium - Wet-peel test by floating-roller method Adh a=4OOnet; p=iso; o=isocs; s=central Printed in Switzerland ii Copyright International Organization for S
2、tandardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 0 IS0 IS0 14676: 1997(E) Introduction This test has been developed to assess pretreatment
3、s for aluminium and is intended for laboratory evaluations. The object was to find and develop a rapid test possessing high sensitivity which could differentiate between pickling pretreatments: complete chromic acid anodisation (CAA)/phosphoric acid anodisation (PAA) processes and incomplete ones. T
4、he application of water containing a wetting agent changes the mode of failure from cohesive failure, usually found in dry joints, to quasi-adhesive failure. The latter is associated with a corresponding reduction in the complete CAA or PAA process. The failure mechanisms in the boundary layer zone
5、initiated by this test are mainly explained by the diffusion of water. The wetting agent essentially improves the surface wetting. This test is considered to be unsuitable for long-term durability prediction. It is expected that if this severe test is applied to less stable joints it will cause main
6、ly adhesive failure. As a consequence, the test loses its ability to differentiate effectively in such circumstances. However, the applicability to other materials and surface pretreatment methods has not been investigated in detail. . . . 111 Copyright International Organization for Standardization
7、 Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by
8、 IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD o IS0 IS0 14676:1997(E) Adhesives - Evaluation of the effectiveness of surface treatment tec
9、hniques for aluminium - Wet-peel test by floating-roller method 1 Scope This International Standard is applicable to the evaluation of the quality of a surface treatment of aluminium or its alloys for high-strength adhesive bonding. 2 Normative references The following standards contain provisions w
10、hich, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to use the most recent editi
11、ons of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 4578:-l), Adhesives - Determination of peel resistance of high-strength adhesive bonds - Floating-roller method. IS0 4588: 1995, Adhesives - Guidelines for the sueace prepa
12、ration of metals. IS0 9 142: 1990, Adhesives - Guide to the selection of standard l b) by drawing the best straight line through the peeling curve using a straight edge. Also record the maximum and minimum forces for each invidual specimen. 10 Precision The precision of this test method is not known
13、 because inter-laboratory data are not available. When inter-laboratory data have been obtained, a precision statement will be added at the following revision. 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/997254
14、5001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 14676:1997(E) 11 Test report The test report shall include the following information: a b) d) e) f) g) h) 0 . J) k) 1) 0 IS0 a reference to this International Standard; all details
15、necessary for complete identification of the adhesive tested, including type, source, manufacturer s code number, batch or lot number, form, etc.; all details necessary for complete identification of the adherends, including material, thickness, width and surface preparation; a description of the bo
16、nding process, including the method of application of the adhesive, the drying or pre-curing conditions (where applicable), and the curing time, temperature and pressure; the average thickness (as precisely as practical) of the adhesive layer after formation of the bond; a complete description of th
17、e specimen: whether individually prepared or cut from a panel, including the dimensions and construction of the specimen, the conditions used for cutting individual specimens, the number of test panels represented and the number of individual specimens (when edge specimens are tested they shall be d
18、esignated “edge specimens”); the conditioning procedure used prior to testing and the conditions used from IS0 9142; the type and concentration of the detergent used; the crosshead separation rate, if other than 100 mm/mm; the method used to determine the average peeling force; the average, maximum
19、and minimum peeling-force values, in kilonewtons per metre of specimen width, for each individual specimen (edge specimens shall be reported separately), in each case for both dry and wet peeling; the type of failure for both the dry and the wet peel area, in accordance with IS0 10365. 4 Copyright I
20、nternational Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International
21、 Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organizatio
22、n for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standa
23、rdization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 14676:1997(E) 0 IS0 ICS 83.180 Descriptors: plastics, adhesives, adhesive bonded joints, a
24、luminium products, tests, adhesion tests, peel tests, estimation, effectiveness, surface treatment. Price based on 4 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 19:51:34 MDTNo reproduction or networking permitted without license from IHS -,-,-