ASTM-D7232 Standard Test Method for Rapid Determination of the Nonvolatile Content of Coatings by Loss in Weight

ASTM-D7232 - 2006 R22 EDITION - CURRENT
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Standard Test Method for Rapid Determination of the Nonvolatile Content of Coatings by Loss in Weight
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Scope

1.1 This test method is used to obtain rapid determination of the weight percent nonvolatile (solids) content via instrumental loss in weight technology. It is not meant as a replacement for Test Method D 2369.

1.2 This test method is principally intended for quality control labs and manufacturing environments where previously characterized materials will be tested repeatedly for different batches or lots.

1.3 This test method can be used for waterborne and solventborne resins, intermediates and finished paint products. This test method may not be applicable to all types of coatings.

1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.

Note 1—There is no similar or equivalent ISO standard.

Significance and Use

This test method is intended for use as a rapid quality control, acceptance, and assessment test. Results are obtained in five to fifteen minutes on most materials. Since the instrument parameters are adjusted to produce the same results as Test Method D 2369, which takes over one hour to run, the time and effort expended on determining the optimal conditions for testing a coating with this instrumental method is valuable when numerous measurements are going to be made on different lots or batches of the same material. Also, the automation of the measurement and the calculations should lead to fewer mistakes being made by less-trained operators.

Keywords

nonvolatile; VOC; volatile; solids; ICS Number Code 87.040 (Paints and varnishes)

To find similar documents by ASTM Volume:

06.01 (Paint -- Tests for Chemical, Physical, and Optical Properties; Appearance)

To find similar documents by classification:

87.040 (Paints and varnishes Including coating powders, paint coatings and protective paint systems)

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Document Number

ASTM-D7232-06R22

Revision Level

2006 R22 EDITION

Status

Current

Modification Type

New

Publication Date

Dec. 15, 2022

Document Type

Test Method

Page Count

5 pages

Committee Number

D01.21