DOWNLOAD ASTM D4752

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. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phone , fax , or service astm. The Society for Protective Coatings, 40 24th St. A number in parentheses indicates the year of last reapproval. As relative humidity and temperature vary during the day, so does the rate of cure. Do not allow more than 10 s to elapse before proceeding to the next steps.

astm d4752

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A certain minimum degree of cure is necessary prior to topcoating.

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. Last previous edition approved in as D — Precision and Bias 8. TABLE 1 Scale for Resistance Rating Resistance Rating Description 5 No effect on surface; no xstm on cloth after 50 double rubs 4 Burnished appearance in rubbed area; slight amount of zinc on cloth after 50 double rubs 3 Some marring and apparent depression of the?

Solvent Resistance Rub Test – ASTM D4752

If the former, record the number of rubs when the substrate is exposed. Historical Version s – view previous versions of standard.

astm d4752

Use this area as the control to visually show the appearance of No Effect. As relative humidity and temperature vary during the day, so does the rate of cure. 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.

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ASTM_D(MEK Resistance)_百度文库

The Society for Protective Coatings, 40 24th St. Current edition approved Jan. 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.

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. 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 ast 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. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

Do not allow more than 10 s to elapse before proceeding to the next steps. As relative humidity and temperature vary during the day, so does the rate of cure. 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? 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. Originally approved in The following observations were made through this analysis: Performance ratings and general statistical information have been in Table X1.

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astm d4752

Complete each double rub one forward and back motion in about 1 s. Clean the surface with tap water or dry cloth to remove loose material. 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?

A certain minimum degree of cure is necessary prior to topcoating. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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 reflectance infrared spectroscopy. The values given in parentheses are for information only.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Practice D is the preferred method for organic coatings.

Norma ASTM D()

Practice D is the preferred method for organic coatings. Reagents and Materials 5. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

astm d4752