ASTM D4752 PDF

A certain minimum degree of cure is necessary prior to topcoating. Performance ratings and general statistical information have been in Table X1. A certain minimum degree of cure is necessary prior d topcoating. The Society for Protective Coatings, 40 24th St. The primer was separately applied to multiple test panels at two different dry?

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If the former, record the number of rubs when the substrate is dd As relative humidity and temperature vary during the day, so does the rate of cure. 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. Performance ratings and general statistical information have been in Table X1. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Practice D is the preferred method for organic d Link to Active This link will always route to the current Active version of the standard. A superscript epsilon e indicates an editorial change since the last revision or reapproval. 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.

Use this area as the control to visually show the appearance of No Effect. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Historical Version s — view previous versions of standard. Precision and Bias 8. Separate test panels corresponding to each coating thickness category were scored after a 6-h cure period and a h cure period.

Specific hazard statements are given in Section 6. The Society for Protective Coatings, 40 24th St. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above d or at phonefaxor service astm. Practice D is the preferred method for organic coatings. A certain minimum degree of cure is necessary prior to topcoating.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Reagents and Materials 5. Mark a by mm 6- by 1-in. Current edition approved Jan. Originally approved in 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 dd zinc on cloth after 50 double rubs Some marring and apparent depression of the?

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? The primer was separately applied to d test panels at two different dry? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

The following observations were made through astj analysis: A number in parentheses indicates the year of last reapproval. 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. Do not allow more than 10 s to elapse before proceeding to the next steps. 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?

Rate the results in accordance with Table 1. It has been shown that the degree of cure of ethyl silicate zinc-rich primers can astk measured by the chemical changes occurring using diffuse reflectance infrared spectroscopy.

It is the responsibility of the user of this standard to establish appropriate safety and health practices asstm determine the applicability of regulatory limitations prior to use. The MEK resistance of some two-component ethyl silicate zinc-rich primers has been shown to correlate well with the cure of the primer as determined by diffuse reflectance infrared spectroscopy. Complete each double rub one forward and back motion in about 1 s.

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ASTM D4752 PDF

Grozahn 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. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Solvent Resistance Rub Test — ASTM D 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. Mark a by mm 6- by 1-in. 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.

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