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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However, with the tape test, failures within the substrate or coating layers are rare because the tape adhesive aetm not usually strong enough to exceed the cohesive strengths of normal substrates and organic coatings. If the substrate has not been reached make another X in a different location. What are the hazards of powder coatings?
For coatings on soft substrates, issues include how deep should this cut penetrate, and is it possible to cut only to the interface? But this, in fact, is not their purpose.
Procedure for X-CUT TAPE TEST METHOD-ASTM D3359-02
Common methods which approach the direct tests are peel, lapshear, and tensile tests. A superscript epsilon e indicates an editorial change since the last revision or reapproval. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
NOTE 2—It should be recognized that differences in adherability of the coating surface can affect the results obtained with coatings having the same inherent adhesion.
It is assumed that coating removal occurs when the tensile force generated e 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.
The values given in parentheses are for information only. For example, when the peel removal force of the dd from the coating used earlier by Task Group D Last previous edition D — The color under the tape is a useful indication of when good contact has been made.
Key steps that directly re? Then dry or prepare the surface, or both, as agreed upon between the purchaser and the seller.
Several factors that contribute to these differences include 3359-0 composition and topology: Flaking and detachment worse than Grade 1. These test methods were designed for relatively ductile coatings applied to metal substrates, not for coatings often brittle applied to plastic parts 7. Discard cutting tools that develop nicks or other defects that tear the film.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. To ensure good contact with the? The color under the transparent tape is a useful indication of when good contact has been made.
Cohesive failure within the coating? For large structures make sufficient tests to ensure that the adhesion evaluation is representative of the whole surface. For tests in the?
astm d – 02 standard test methods for_百度文库
In actuality, however, this force is distributed over a discrete distance O-A in Fig. In its simplest version a piece of adhesive tape is pressed against the paint? Apparatus and Materials Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
If the adhesion strength of the tape has not been determined, report the speci? Because the substrate and its surface preparation or lack of it have sstm 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.
Precision and Bias 8 Both concerns are well founded: Extremes in temperature or relative humidity may affect the adhesion of the tape or the coating. 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.
Ast, is reasonable to state that at the ashm time no test exists that can precisely assess the actual physical strength of an adhesive bond.