Designation: D – 02 Standard Test Methods for Measuring Adhesion by Tape Test1 This standard is issued under the?xed designation D. ASTM D Uploaded by. Leonardo Gonçalves. Loading Preview. Sorry, preview is currently unavailable. You can download the paper by clicking the. ASTM D Pull Off Test Standard. Uploaded by. vlong ASTM D MEK Test (Zinc Test). Uploaded by. vlong ASTM D Eng Cross-cut.
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Discard cutting tools that develop nicks or other defects that tear the film.
Procedure for X-CUT TAPE TEST METHOD-ASTM D3359-02
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. This standard has been approved for use by agencies of the Department of Defense. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Direct tests include the Hesiometer and the Adherometer 2. Also, because tapes change on storage, bond strengths of the tape may change over time 7, 8. D — 02 results with the adhesion rating s. It is assumed that coating removal occurs when the tensile force generated along the latter interface, which is a function of the rheological properties of the backing and adhesive layer materials, is greater than the bond strength at the coating-substrate interface or cohesive strength of the coating.
Procedure for A-X-CUT TAPE TEST METHOD-ASTM D
Also, Test Method B is not considered suitable for? The unique functional requirements of coatings on plastic substrates cause the usual tape tests to be 33599-02 for measuring adhesion performance in practice. Rate the adhesion in accordance with the following scale illustrated in Fig.
Some commercial tapes are manufactured to meet minimum standards. For large structures make sufficient tests to ensure that the adhesion evaluation is representative of the whole surface.
Summary of Test Methods 3. After drying or testing the coating, conduct the tape test at room temperature as de? More importantly, in this instance the test is being applied beyond its intended scope.
It is reasonable to state that at the present time no test exists that can precisely assess the actual physical strength of an adhesive bond. There generally is difficulty, however, in relating these tests to wstm adhesion phenomena.
Users of it should, therefore, check whether current material gives comparable results asstm previous supplied material. Then dry or prepare the surface, or both, as s upon 3359-02 the purchaser and the seller. Remove an additional length at a steady that is, not jerked rate and cut a piece about 75 mm 3 in.
The conditions and time of exposure will be governed by ultimate coating use or shall be agreed upon between the purchaser and seller. The color under the transparent tape is a useful indication of when good contact has been made. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. However, the precision values given in Criteria deemed essential for a test to warrant large-scale acceptance are: Thus both tensile and compressive forces are involved in adhesion tape testing.
A given lot may surpass these standards and thus be suitable for general market distribution; however, such a lot may be a source of serious and unexpected error in assessing adhesion. For large structures make sufficient tests to ensure that the adhesion evaluation is representative of the whole surface. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
It is of particular importance that the cutting edge or edges be in good condition. Originally published as D — Criticism of these tests arises when they are used to quantify the strength of adhesive bonding.
For tests in the field, ensure that the surface is clean and dry. For example, when the peel removal force of the tape from the coating used earlier by Task Group D It is not unexpected that different operators might obtain different results 7, 8.
Major limitations of the tape test are its low sensitivity, applicability only to coatings of relatively low bond strengths, and non-determination of adhesion to the substrate where failure occurs within a single coat, as when testing primers alone, or within or between coats in multicoat systems. Because of the variability in adhesion strength from batch-to-batch and with time, it is essential that tape from the same batch be used when tests are to be run in different laboratories.
The manufacturer of this tape awtm the manufacturer of the tape used in the interlaboratory study see RR: Last previous edition D — Extremes in temperature or relative humidity may affect the adhesion of the tape or the coating.
Although some rather brittle coatings may exhibit cohesive failure, the tape test adhesion method does not make provision for giving failure locality 7, 8.
Smooth the tape into place by? The central issues are that the test on plastics lacks reproducibility and does not relate to the intended application. If the peel angle and rate vary, the force required to remove the tape can change dramatically. Precision and Bias 8 If the metal has not been reached make another grid in a different location. NOTE 5—If desired or speci? If the substrate has not been reached make another X in a different location. Apparatus and Materials Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.
When making the incisions, use the straightedge and cut through the coating to the substrate in one steady motion. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
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