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Standard Practice for Determining the Dry Fall (Fog) Properties of Protective CoatingsTranslate name
STANDARD published on 1.11.2021
Designation standards: ASTM D7868-21
Publication date standards: 1.11.2021
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
dry fall, dry fog, overspray,, ICS Number Code 87.040 (Paints and varnishes)
|Significance and Use|
5.1Attachment of overspray particles to vehicles and other surfaces not intended to be coated can result in property damage and insurance claims. Dry fall coatings are formulated such that overspray particles dry as they move through the air, and before they land on horizontal surfaces. These particles can then be brushed off, vacuumed or washed from the surfaces with no damage. This practice can be used to evaluate the dry fall properties of coatings prior to large scale use. The practice can also be used to evaluate whether the coating(s) possess the same dry fall properties when the fallout collects on surfaces with an elevated temperature.
1.1This practice covers a procedure for qualitatively evaluating the dry fall properties of coatings. The establishment of the test environment and the evaluation procedures are described.
1.2This practice uses panels containing an automotive finish since these types of surfaces are often the primary concern relating to overspray damage. Panels coated with other systems may be used as collection surfaces when they are deemed to be more representative.
1.3The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
|2. Referenced Documents|
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