ASTM D assesses the adhesion of film coatings to metallic substrates by applying and removing pressure-sensitive tape over cuts made in the film. Documents Similar To ASTM D Eng Cross-cut. ISO Uploaded by. Quang Duan Nguyen · ISO Uploaded by. Anonymous n4bJbeLAq. This product is ASTM D compliant. Proven to be a very close equivalent to the Permacel P99 tape which was withdrawn from production by the.
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Criteria deemed essential for a test to warrant large-scale acceptance are: Historical Version s – view previous versions of standard. Summary of Test Methods 1.
If an intact lm is d33590-9 cleanly by the tape, or if it debonds just by cutting into it without applying tape, then the adhesion is rated simply as poor or very poor, a more precise evaluation of such lms not being within the capability of this test.
The intra- and immersion, clean and wipe the surface with an appropriate inter-laboratory precision of this test method is similar to other solvent dd3359-09 will not harm the integrity of the coating. It is not unexpected that different operators might obtain different results 12. 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.
The color under the transparent tape is a useful indication of when good contact has been made. If this is not possible the test method should be used only for ranking a series of test coatings. A similar test method, ISOpermits tests on soft substrates for example, wood and plaster.
NOTE 1—This test method has been reported being used to measure adhesion of organic coatings d339-09 soft substrates for example, wood and plastic. Check for aastm with a straight edge such as that of the tempered steel rule Note 3—It should be recognized that differences in adherability of the coating surface can affect the results obtained with coatings having the same inherent adhesion.
The values given in parentheses are for information only. ASTM D cross h Because of the variability in adhesion strength from batch-to-batch and with time, it is essential astj tape from the same batch be r3359-09 when tests are to be run in different laboratories. If the substrate has not been reached make another X in a different location. Because the substrate and its surface preparation between the purchaser and seller.
After immersion, clean and wipe the surface with an appropriate solvent which will not harm xstm integrity of the coating.
Current edition approved Feb. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Extremes in temperature or relative humidity may affect the adhesion of the tape or the coating.
But this, in fact, is not their purpose. It is not unexpected that different operators might obtain different results 7, 8. This standard has been approved for use by agencies of the Department of Defense.
Adhesion is then rated by comparing lm removed against an established rating scale. A dd3359-09 test method, ISOpermits tests on soft substrates for example, wood and plaster.
Precision and bias data on the later is lacking. Precision and bias data on the later is lacking.
ASTM D – 09 Standard Test Methods for Measuring Adhesion by Tape Test
NOTE 5—Coatings should be applied in accordance with Practice Dor as agreed upon between the purchaser and the seller. Also, because tapes change on storage, bond strengths of the tape may change over time 7, 8. These effects are related as they reect certain rheological properties of the backing and adhesive that are molecular in origin. They do not distinguish between higher levels of adhesion for which more sophisticated methods of measurement are required.
Apparatus and Materials 7 Both test methods are used to establish whether the adhesion of a coating to a substrate is at an adequate level; however they do not distinguish between higher levels of adhesion for which more sophisticated methods of measurement are required. For large structures make sufficient tests to ensure that the adhesion evaluation is representative of the whole surface.
Summary of Test Methods 3. The unique functional requirements of coatings on plastic substrates cause the usual tape tests to be unsatisfactory for measuring adhesion performance in practice. If the metal has not been It is of particular importance that the cutting edge or By design it was made as simple as possible to perform, and requires a minimum of specialized equipment and materials that must meet certain specications.
The limited scale of 0 to 5 was selected deliberately to avoid a false impression of being sensitive. Flaking and detachment worse than Grade 1.
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.
Furthermore, these test methods do 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 12. If you are aware of alternative suppliers, please provide this used while making individual cuts and examining the test area.
Procedure at the time of testing.
The manufacturer of this tape and the manufacturer of the tape used in the interlaboratory study see RR: If testing coatings on non-metallic substrates, either Test Method A or Test Method B may be more appropriate and the method employed should be discussed by d359-09 parties.
However, with the tape test, failures within the substrate or coating layers are rare because the tape adhesive is not usually strong enough to exceed the cohesive strengths of normal substrates and organic coatings. They do not distinguish between higher levels of adhesion for which more sophisticated methods of measurement are required. It is of particular importance that the cutting edge or edges be in good condition.
Adhesive ASTM D3359 Cross Hatch Adhesion Test Tape | Elcometer 99
Variation in pull rate and peel angle can effect large differences in test values and must be minimized to assure reproducibility 3. In actuality, however, this force is distributed over a discrete distance O-A in Fig. After drying or testing the coating, conduct the tape test at room temperature as dened sstm Specication Dunless D standard temperature is required or agreed.