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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Aztm coatings on soft substrates, issues include how deep should this cut penetrate, and is it possible to cut only to the interface? Criteria deemed essential for a test to warrant large-scale acceptance are: They do not distinguish between higher levels of adhesion for which more sophisticated methods of measurement are required.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. However, with the tape test, failures within the substrate or coating layers are rare because the tape 3539-02 is not usually strong enough to exceed the cohesive strengths of normal substrates and organic coatings.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Rate the adhesion in accordance with the following scale illustrated in Fig. When making successive single cuts with the aid of a guide, place the guide on the uncut area. 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 335-02 error in assessing adhesion.
Then dry or prepare the surface, or both, as agreed upon between the purchaser and the seller. If the adhesion strength of the tape has not been determined, report the speci?
Procedure for A-X-CUT TAPE TEST METHOD-ASTM D
Flaking and detachment worse than Grade 1. Major limitations of the tape test are its low sensitivity, applicability only to coatings of relatively low bond qstm, 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. Variation in pull rate and peel angle can effect large differences in test values and must be minimized to assure reproducibility 9.
If you 33590-2 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.
Procedure for X-CUT TAPE TEST METHOD-ASTM D3359-02
This standard has been approved for use by agencies of the Department of Defense. Adhesion is then rated by comparing? These effects are related as they re? Dhave advised this subcommittee that the properties of these tapes were changed. After immersion, clean and wipe the surface with an appropriate solvent which will not harm the integrity of the coating.
If this is not possible the test method should be used only for ranking a series of test coatings. After drying or testing the coating, conduct the tape test at room temperature as de? Smooth the tape into place by finger in the area of the incisions and then rub firmly with the eraser on the end of a pencil.
Several factors that contribute to these differences include coating composition and topology: 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.
D5 Creation Powered by: Standard Test Method f Further, the tape test asmt not give an absolute value for the force required for bond rupture, but serves only as an indicator that some minimum value for bond strength was met or exceeded 7, 8. It is not unexpected that different operators might obtain different results 7, 8. Discard cutting tools that develop nicks 339-02 other defects that tear the? If the metal has not been reached make another grid in a different location.
Current edition approved Aug. Also, because tapes change on storage, bond 359-02 of the tape may change over time 7, 8.
3359-20 methods which approach the direct tests are peel, lapshear, and tensile tests. By design it was made as simple as possible to perform, and requires a minimum of specialized equipment and materials that must meet certain speci? Remove an additional length at a steady that is, not jerked rate and cut a piece about 75 mm 3 in.
astm d – 02 standard test methods for_百度文库
A number in parentheses indicates the year of last reapproval. The color under the transparent tape is a useful indication of when good contact has been made. Extremes in temperature or relative humidity may affect the adhesion of the tape or the coating. The unique 3359-0 requirements of coatings on plastic substrates cause the usual tape tests to be unsatisfactory for measuring adhesion performance in practice.
But this, in fact, is not their purpose. The color under the transparent tape is a useful indication of when good contact has been made. As Mittal 1 12 has pointed out, the answer is both yes and no.
But it can also be said that it is possible to obtain an indication of relative adhesion performance. Thus both tensile and compressive forces are involved in adhesion tape testing. Key steps that directly re?
However, the precision values given in The color under the tape is a useful indication of when good contact has been made. Both concerns are well founded: NOTE 5—If desired or speci? Some commercial tapes are manufactured to meet minimum standards. It should be noted, however, that multitip cutters10 provide good results only on test areas sufficiently plane that all cutting edges contact the substrate to the same degree.
Originally published as D — In actuality, however, this force is distributed over a discrete distance O-A in Fig. Then dry or prepare the surface, or both, as agreed upon between the purchaser and the seller.