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 Proven to be a very close equivalent to the Permacel P99 tape which was withdrawn from production by the.
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For coatings on soft substrates, issues include how deep should this cut penetrate, and is it possible to cut only to the interface? As such, no single tape is likely to be suitable for testing all coatings. 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 interested parties.
For multicoat systems where adhesion failure may occur between or within coats, the adhesion of the coating system to the substrate is not determined. NOTE 5—Coatings should be applied in accordance with Practice Dor as agreed upon between the purchaser and the seller. They do not distinguish between higher levels of adhesion for which more sophisticated methods of measurement are required.
Adhesive ASTM D3359 Cross Hatch Adhesion Test Tape | Elcometer 99
Your comments r3359-09 receive careful consideration at a meeting of the responsible technical committee,1 which you may attend. NOTE 1—This test method has been reported being used to measure adhesion of organic coatings on soft substrates for example, wood and plastic.
A similar test method, ISOpermits tests on soft substrates for example, wood and plaster.
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. Variation in pull rate and peel angle can effect large differences in test values and must be minimized to assure reproducibility 9.
It should be noted, however, that multitip cutters8 provide good results only on test areas sufficiently plane that all cutting edges contact the substrate to the same degree. Check for atness with a straight edge such as that of the tempered steel rule Both concerns are well founded: Apparatus and Materials The intra- and immersion, clean and wipe the surface with an appropriate inter-laboratory precision of this test method is similar to other solvent which will not harm the integrity of the coating.
The values given in parentheses are for information to 5 scale.
ASTM D – 09 Standard Test Methods for Measuring Adhesion by Tape Test [PDF] – Все для студента
NOTE 6—If desired or specied, the coated test panels may be subjected to a preliminary astk such as water immersion, salt spray, or high humidity before conducting the tape test. Link to Active This link will always route to the current Active version of d33599-09 standard. A number in parentheses indicates the year of last reapproval. The manufacturer of this tape and the manufacturer of the tape used in the interlaboratory study see RR: This standard has been approved for use by agencies of the Department of Defense.
The unique functional requirements of coatings on plastic substrates cause the usual tape tests to be unsatisfactory for measuring adhesion performance in practice.
Do not attempt to deepen a previous cutting devices. Procedure a method to evaluate adhesion of a coating to different substrates or surface treatments, or of different coatings to the 7. It is of particular importance that the cutting edge or Committee D01 has identied the location of selected changes to this standard since the last issue D – 02 that may impact the use of this standard.
NOTE 3—It d3359–09 be recognized that differences in adherability of the coating surface can affect the results obtained with coatings having the same inherent adhesion. Justication for the cutting step is reasonable as cutting provides a free edge from which peeling can begin without having to overcome the cohesive strength of the coating layer.
Approved February 1, asm Test Methods D was developed with metal as the substrate and, in the absense of supporting precision and bias data, is so limited. NOTE 2—Subject to agreement between the purchaser and the seller, Test Method B d33359-09 be used for thicker lms if wider spaced cuts are employed. The accuracy and precision of the test result obtained by using these methods depends largely upon the skill of the operator and the operator’s ability to perform the test in a consistent manner.
Rate the adhesion in accordance with the following scale illustrated in Fig. Apparatus and Materials 5. Criteria deemed essential for a test to warrant large-scale acceptance are: If an intact lm is peeled 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. Adhesion is then rated by comparing lm removed against an established rating scale.
Flaking and detachment worse than Grade 1. Also, because tapes change on storage, bond strengths of the tape may change over time 7, 8.
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. The nal step in the test is visual assessment of the coating removed from the specimen, which is subjective in nature, so that the coatings can vary among individuals evaluating the same specimen 9.
A number in parentheses indicates the year of last reapproval. The color under the transparent tape is a useful coatings. Procedure at the time of testing.
Approved November 1, Users shall not use intermediate values for ranking adhesion tests within this method.