ASTM D2697 PDF

or both, the greater will be the deviation of the coverage calculation (This is also true to a lesser degree with Test Method D). For various reasons the. ASTM D is intended to provide a measure of the volume of dry coating obtainable from a given volume of liquid coating. This value is useful for comparing. Comparison of the ASTM D Method and the film thickness method for obtaining volume solids 3. Bibliography.

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It is the responsibility d22697 the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

The approach sstm should provide faster and more accurate results than the use of the liquid displacement technique in Test Method Dparticularly for coatings that are difficult to wet or that contain voids, cracks or other defects.

With high poly vinyl asfm PVC films, however, liquid displacement of air voids takes place with difficulty even under high pressures. Earlier collaborative studies included a gloss enamel, a flat wall paint, a gloss house enamel, an industrial baking enamel, an interior latex paint, and an exterior latex paint. The use of volume nonvolatile matter values in such instances should be carefully considered as the increased volume is largely due to air trapped in these voids.

Purging the gas pycnometer flushes these materials from the film. The use of volume nonvolatile matter values in such instances should be carefully considered as the increased volume is largely asfm to air trapped in these voids. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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ASTM D2697 – 03(2014)

Prior to this method a satisfactory procedure for measuring percent volume nonvolatile did not exist see Note 11 in Practice D Link to Active This link will always route to the current Active version of the standard. Historical Version s – view previous versions of standard. This value is useful for comparing the coverage square feet of surface covered atsm a specified dry film thickness per unit volume obtainable with different coating products.

Since the actual coverage of a coating includes the void volume and the porosity of the film, the coverage value calculated from this method will be inaccurate by d267 amount, that is, the actual coverage will be greater. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

An interlaboratory study to establish the precision of this test method included a water-reducible exterior latex paint and three automotive coatings that included a solvent-reducible primer surfacer, water reducible primer surfacer, water reducible enamel topcoat, and acrylic dispersion lacquer topcoat.

Volume Nonvolatile Matter in Clear or Pigmented Coatings – ASTM D2697

Historical Version s – view previous versions of standard. The values given in d26977 are mathematical conversions to SI units that are provided for information only and are not considered standard.

The values given in parentheses are for information only. Helium solves this problem since, as a gas, it readily penetrates and displaces air, water, and volatile d26997 even at low pressures. This provides a more accurate determination of void volumes than can be obtained via liquid v2697. Such contraction or expansion of resin solutions is governed by a number of factors, one of which is the extent and direction of spread between solubility parameters of the resin and solvent.

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One reason is that the volume occupied by a solution of resin in solvent may be the same, greater, or less than the total volume of the separate ingredients.

ASTM D – 03 Standard Test Method for Volume Nonvolatile Matter in Clear or Pigmented Coatings

In Practice D paragraph 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. This value is useful for calculating the volatile organic content VOC of a coating and could be used to estimate the coverage square feet of surface covered at a specified dry film thickness per unit volume obtainable with different coating products.

One reason is that the volume occupied by a solution of resin in solvent may be the same, greater, or less than the total volume of the separate ingredients: Link to Active This link will always route to the current Active version of the standard. Above the critical pigment volume concentration, the apparent volume d6297 the dry film is significantly greater than theoretical due to the increase in unfilled voids between pigment particles.

The improvement in accuracy stems from the superior ability of helium gas under pressure to penetrate very small pores and surface irregularities in dried dd2697.

Above the critical pigment volume concentration, the apparent volume of the dry film is significantly greater than theoretical due to the increase in unfilled voids between pigment particles.