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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ASTM D | Leonardo Gonçalves –
Also, because tapes change on storage, bond strengths of the tape may change over time 7, 8. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. However, the precision values given in Because of the variability in adhesion strength from batch-to-batch and with time, it is essential e tape from the same batch be used when tests are to be run in different laboratories.
Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend. Precision and Bias 8 NOTE 5—If desired or speci? Users of xstm should, therefore, check whether current material gives comparable results to previous supplied material.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. One supplier that has assisted in the re? 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 Cohesive failure within the coating? It is not unexpected that different operators might obtain different results 7, 8. Do not attempt to deepen a previous cut as this may affect adhesion along the incision.
If the adhesion strength of the tape has not been determined, report the speci? Smooth the tape into place by? These test methods were designed for relatively ductile coatings applied to metal substrates, not for coatings often brittle applied to plastic parts 7.
Applied to metals, it is economical to perform, lends itself to job site application, and most importantly, after decades of use, people feel comfortable with it.
The color under the tape is a useful indication of when good contact has been made. Because the substrate and its surface preparation or lack of it have a drastic effect on the adhesion of coatings, a method to evaluate adhesion of a coating to different substrates or surface treatments, or of different coatings to the 2 3 1.
If the metal has not been reached make another grid in a different location. Posted in Powder Coating News Tags: Some commercial tapes are manufactured to meet minimum standards.
Procedure for X-CUT TAPE TEST METHOD-ASTM D3359-02
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, 33359-02 when testing primers alone, or within or between coats in multicoat systems. 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. In actuality, however, this force is distributed over a discrete distance O-A in Fig.
The values given in parentheses are for information only. The color under the transparent tape is a useful indication of when good contact has been made.
astm d – 02 standard test methods for_百度文库
Extremes in temperature or relative humidity may affect the adhesion of the tape or the coating. However, with the tape test, failures within the substrate or coating layers are rare because the tape adhesive is sstm usually strong enough to exceed the cohesive strengths of normal substrates and organic coatings.
The limited scale of 0 to 5 was selected deliberately to avoid a false impression of being sensitive. Thus both tensile and compressive forces r involved in adhesion tape testing.
It is of particular importance that the cutting edge or edges be in good condition. Last previous edition D — Remove an additional length at a steady that is, not jerked rate and cut a piece about 75 mm 3 in.