ASTM D – Designation: D – 08 Standard Test Methods for Measuring Adhesion by Tape Test. Buy ASTM D TEST METHODS FOR MEASURING ADHESION BY TAPE TEST from SAI Global. ASTM D Historical Standard: ASTM D Standard Test Methods for Measuring Adhesion by Tape Test. SUPERSEDED (see Active link, below).
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Variation in pull rate and peel angle can effect large differences in test values and must be minimized to assure reproducibility 9. A significant compressive force arises from d33559-08 response of the tape backing material to being stretched.
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.
ASTM D – 08 Standard Test Methods for Measuring Adhesion by Tape Test
No further reproductions authorized. 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. E3359-08 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.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided sstm part of the standard.
Discard cutting tools that develop nicks or other defects that tear the lm. Apparatus and Materials For large structures make sufficient tests to ensure that the adhesion evaluation is representative of the whole surface. Are you sure you want to empty the cart? 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. Cut through the lm to the substrate in one steady motion using just sufficient 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
These effects are related as they reflect certain rheological properties of the backing and adhesive that are molecular in origin.
Also, because tapes change on storage, bond strengths of the tape may change over time 7, 8. Variation in pull rate and peel angle can effect large differences in test values and must be minimized to assure reproducibility 9.
Print 1 2 3 4 5 page sstarting from page current page. 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.
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.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. In actuality, however, this force is distributed over a discrete distance O-A in Fig. Note 3It 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 not unexpected that different operators might obtain different results 7, 8. Small flakes of the coating are detached along edges and at intersections of cuts.
In its simplest version a piece of adhesive tape is pressed against the paint film and the resistance to and d3359-08 of film removal observed when the tape is pulled off.
Originally approved in When making the incisions, use the straightedge and cut through the coating to the substrate in one steady motion. If the peel angle and rate vary, the force required to remove the tape can change dramatically.
Wish List Please contact us first before donating any of these items. They do not distinguish between higher levels of e3359-08 for which more sophisticated methods of measurement are required.
ASTM D 3359 – 09 Standard Test Methods for Measuring Adhesion by Tape Test
The limited scale of 0 to 5 was selected deliberately to avoid a false impression of being sensitive. The central issues are that the test on plastics lacks reproducibility and does not relate to the intended application. 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 d339-08 and the seller, Test Method B can be used for thicker films if wider spaced cuts are employed. Do not d3359–08 to deepen a previous cut as this may affect adhesion along the incision.
NOTE 6—Coatings should be applied in accordance with Practice D, or as agreed upon between the purchaser and the seller.
ASTM D3359 Measuring Adhesion by Tape Test
Test Method D was developed with metal as the substrate and, in the absence of supporting precision and d335-908 data, is so limited.
Precision and Bias5 9.
F Standard Specification for Driven Fasteners: These test methods were designed for relatively ductile coatings applied to metal substrates, not for coatings often brittle applied to plastic parts 7. Last previous edition approved in as D — But d3359-0 can also be said that it is possible to obtain an indication of relative adhesion performance. 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.
This standard has been approved for use by agencies of the Department of Defense. Precision and bias data on the later is lacking.
But this, in fact, is not their purpose.