ASTM D3359-09 PDF
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 Proven to be a very close equivalent to the Permacel P99 tape which was withdrawn from production by the.
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Because of the variability in adhesion strength from batch-to-batch and with time, it is essential that tape from the same batch be used when d33559-09 are to be run in different laboratories.
99 Adhesive ASTM D Tape (KM)
Do not attempt to deepen a previous cutting devices. A similar test method, ISOpermits tests on soft substrates for example, wood and plaster. It is reasonable to state that at the present time no test exists that can precisely assess the actual physical strength of an adhesive bond. There generally is difficulty, however, in relating these tests to d3359-9 adhesion phenomena. Although some rather brittle coatings may exhibit cohesive failure, the tape test adhesion method does not make provision for giving failure locality d359-09, 8.
Smooth the tape into place by nger in the area of the incisions and then rub rmly with the eraser on the end of a pencil. Precision and Bias 6 9.
ASTM D 3359 – 09 Standard Test Methods for Measuring Adhesion by Tape Test
Because the substrate and its surface preparation between the purchaser and seller. If the peel angle and rate vary, the force required to remove the tape can change dramatically. When the peel angle and rate vary, the force required to remove the tape can change dramatically due to the rheological properties of the backing and adhesive. But it can also be said that it is possible to obtain an indication of relative adhesion performance.
NOTE 6—If desired or specied, the coated test panels may be subjected to a preliminary exposure such as water immersion, salt spray, or high humidity before conducting the tape test. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn.
X3359-09 drying or testing the coating, conduct the tape test at room temperature as dened in Specication Dunless D standard temperature is required or agreed. Variation in pull rate and peel angle can effect large differences in test values and must be minimized to assure reproducibility 9.
Approved November 1, Dhave advised this subcommittee that the properties zstm these tapes were changed.
Adhesive ASTM D3359 Cross Hatch Adhesion Test Tape | Elcometer 99
Precision and Bias for two measurements. 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.
After drying or testing the coating, conduct the report the results with the adhesion rating s. Also, Test Method B is not considered suitable for lms thicker than 5 mils m. 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, as when testing primers alone, or within or between coats in multicoat systems.
Since an intact lm with appreciable adhesion is frequently not removed at all, the severity of the test is usually enhanced by cutting into the lm a gure X or a cross hatched pattern, before applying and removing the tape. Variation in pull rate and peel angle can effect large differences in test values and must be minimized to assure reproducibility 3.
Issues with plastic substrates are noted in Appendix X1. The color under the transparent tape is a useful coatings. Remove an additional length at a steady that is, not jerked rate and cut a piece about 75 mm 3 in.
Cut through the lm to the substrate in one steady motion using just axtm pressure on the cutting tool to have the cutting edge reach the substrate.
ASTM D – 09 Standard Test Methods for Measuring Adhesion by Tape Test [PDF] – Все для студента
Also, because tapes change on storage, bond strengths of the tape may change over time 7, 8. More importantly, in this instance the test is being applied beyond its intended scope. Precision and bias data on the later is lacking. The unique functional requirements of coatings on plastic substrates cause the usual tape tests to be unsatisfactory for measuring adhesion performance in practice.
However, the precision 7 Multiblade cutters are available from a few sources that specialize in testing values given in Historical Version s – view previous versions of standard Translated Version s: Because of the variability in 7.
Link to Active This link will always route to the current Active version of the standard. Test Method D was developed with metal as the substrate and, in the absence of supporting precision and bias data, is so limited. While this may be an agreement between purchaser and seller, the precision values given in These test methods were designed for relatively ductile coatings applied to metal substrates, not for coatings often brittle applied to plastic parts 7.
Issues with plastic substrates are noted in Appendix X1. A number in parentheses indicates the year of last reapproval.
For multicoat systems where adhesion failure may occur between or within coats, the adhesion of the coating system to the substrate is not determined. 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 same substrate and treatment, zstm of considerable usefulness in the industry.
However, with the tape test, failures within the substrate or coating layers are rare because the tape awtm is not usually strong enough to exceed the cohesive strengths of normal substrates and organic coatings. The limited scale of 0 to 5 was selected deliberately long that intersect near their middle with a smaller angle of to avoid a false impression of being sensitive. The values given in parentheses are for information only.
Extremes in temperature or relative humidity 4. Test Methods D was developed with metal as the substrate and, in the absence of supporting precision and bias data, is so limited.
The color under the transparent tape is a useful indication of when good contact has been made. Issues with plastic substrates are noted in Appendix X1. As such, no single tape is likely to be suitable for testing all coatings.