ASTM D4752 PDFASTM D4752 PDF

ASTM D MEK Test (Zinc Test) – Free download as PDF File .pdf), Text File . txt) or read online for free. Designation: D – Standard Test Method for. Measuring MEK Resistance of Ethyl Silicate (Inorganic) Zinc-Rich Primers by Solvent Rub1 This standard. Designation: D – 03 Standard Test Method for Measuring MEK Resistance of Ethyl Silicate (Inorganic) Zinc-Rich Primers by Solvent Rub1.

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ASTM_D(MEK Resistance)_百度文库

A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. The MEK resistance of some twocomponent ethyl silicate zinc-rich primers has been shown to correlate well with the cure of the primer as determined by diffuse re? Practice D is the preferred method for organic coatings.

The values given in parentheses are for information only.

Solvent Resistance Rub Test – ASTM D4752

It is the responsibility of the user of this adtm to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. As relative humidity and temperature vary during the day, so does the rate of cure.

A certain minimum degree of cure is necessary prior to topcoating. It has been shown that the degree of cure of ethyl silicate zinc-rich primers can be measured by the chemical changes occurring using diffuse re? Reagents and Materials 5. Clean the surface with tap water or dry cloth to remove loose material.

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Current edition approved Jan. Originally approved in Last previous edition approved in as D — The Society for Protective Coatings, 40 24th St. TABLE 1 Scale for Resistance Rating Resistance Rating 5 4 3 2 1 0 Description No effect on surface; no zinc on cloth after 50 double rubs Burnished appearance in rubbed area; slight amount of zinc on cloth after 50 double rubs Some marring and apparent depression of the?

Mark a by mm 6- by 1-in. Do not allow more than 10 s to elapse before proceeding to the next steps. Complete each double rub one forward and back motion in about 1 s.

If the former, record the number of rubs when the substrate is exposed. Use this area as the control to visually show the appearance of No Effect. Rate the results in accordance with Table 1. Precision and Bias 8. Using the procedure outlines in this test method, eight different operators were asked to rate, in triplicate, the methyl ethyl ketone MEK rub resistance of a particular inorganic zinc-rich primer.

The primer was separately applied to multiple test panels at two different dry? Separate test panels corresponding to each coating thickness category were scored after a 6-h cure period and a h cure period. Performance ratings and general statistical information have been in Table X1.

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The following observations were made through this analysis: 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. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? e4752

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.