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 Proven to be a very close equivalent to the Permacel P99 tape which was withdrawn from production by the.
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The intra- and inter-laboratory precision of this test method is similar to other widely-accepted tests for coated substrates for example, Test Method D and Test Method Dbut this is partly the result of it being insensitive to all but large differences in adhesion. For coatings on soft substrates, issues include how deep should this d33559-09 penetrate, and is it possible to cut only to the interface? 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 d33590-9 multicoat systems.
If you feel that your comments have not received a fair hearing you should make your views known to d335-09 ASTM Committee on Standards, at the address shown below.
As such, no single tape is likely to be suitable for testing all coatings. The conditions and time of exposure will be governed by ultimate coating use or shall be agreed upon between the purchaser and seller.
Also, Test Method B is not considered suitable for lms thicker than 5 mils m.
ASTM D – 09 Standard Test Methods for Measuring Adhesion by Tape Test
Also, because tapes change on storage, bond strengths of the tape may change over time 7, 8. Signicance and Use 4. 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. Extremes in temperature or relative humidity may affect the adhesion of the tape or the coating. Criteria deemed essential for a test to warrant large-scale acceptance are: Note 1—This asstm method has been reported being used to measure adhesion of c3359-09 coatings on soft substrates for example, wood and plastic.
For tests in the eld, ensure that the surface is clean and dry. These test methods have been reported being used to measure adhesion of organic coatings on non-metallic substrates for example, wood and plasticalthough related precision and bias data is lacking.
Adhesive ASTM D3359 Cross Hatch Adhesion Test Tape | Elcometer 99
It is assumed that coating removal occurs when the tensile force generated along the latter interface, which is a function d33359-09 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. Current edition approved June 1, It is not unexpected that different operators might obtain different results 12.
Do not attempt to deepen a previous cutting devices. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
ASTM D 3359 – 09 Standard Test Methods for Measuring Adhesion by Tape Test
Test Methods Related Coating Products D was v3359-09 with metal as the substrate xstm, in the absence of D Practices for Producing Films of Uniform Thickness supporting precision and bias data, is so limited. Rate the adhesion in accordance with the following scale illustrated in Fig. Precision and Bias 6 dry or prepare the surface, or both, as agreed upon between the 9. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
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. After sion conditions and method of sample preparation.
Active view current version of standard. 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. These test methods were designed for relatively ductile coatings applied to metal substrates, not for coatings often brittle applied to plastic parts 7. Originally approved in The color under the transparent tape is a useful indication of when good contact has been made.
NOTE 5—Coatings should be applied in accordance with Practice Dor as agreed upon between the purchaser and the seller.
Approved February 1, Limiting the range of rankings from 0 to 5 reflects the inability of this test method to make fine distinctions between levels of d3395-09. When making successive single cuts with 9.
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 adtm layer. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Remove an additional length at a steady 5.
Then widely-accepted tests for coated substrates for example, Test dry or prepare the surface, or both, as agreed upon between the Method D and Test Method Dbut this is partly the purchaser and the seller. Differences in tapes used can lead to different results as small changes in backing stiffness and adhesive rheology cause large changes in the tension area. Because the substrate and its surface preparation or lack thereof 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, is of considerable usefulness in the industry.
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 adhesion strength of the tape has not been determined, report the specic tape used and its manufacturer. 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.
Dhave advised this subcommittee that the properties of these tapes were changed. 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.
Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.