意味と目的
5.1 This practice discusses applicable ASTM test methods for determining the VOC content of paints and related coatings and provides formulas for calculating the VOC content expressed in terms of VOC mass: (1) water-less and exempt volatile compounds per unit volume of coating, そして (2) paint solids per unit volume and (3) paint solids per unit mass.

5.2 VOC content is used to compare the amount of VOC released by different coatings used for the same application, あれは, coating the same area to the same dry film thickness (assuming the same application efficiency).

5.3 VOC content data are requested by various regulatory authorities.

5.4 Only when the VOC content is expressed as a function of the solid volume of the coating can the difference in VOC released by different coatings used for the same application be measured linearly.

述べる 4: したがって, assuming the same transfer efficiency, a coating with a VOC content of 3 lb VOC/gal solids will release 1/2 the VOC of a coating with 6 lb VOC/gal solids.

ASTM D 3960-2018 揮発性有機化合物の測定 (VOC) 塗料および関連コーティングにおける

5.5 When the VOC content is expressed as a function of the paint volume minus water and exempted solvents, the values obtained do not take into account differences in the solid content of the paint volume being compared: したがって, this expression does not provide a linear measure of differences in VOC emissions from different paints used for the same application.

注記 5: したがって, a paint with a VOC content of 3 LBS of VOC/gal less water and exempt volatile compounds will release approximately 85% less VOC than a paint with 6 LBS less VOC/gal water and exempt volatile compounds.

ASTM D 3960-2018 揮発性有機化合物の測定 (VOC) 塗料および関連コーティングにおける

の範囲
1.1 This practice measures the volatile organic compound (VOC) content of solvent-based and water-based paints and related coatings, which is determined based on the amount of material released from the sample under specified baking conditions and minus exempted volatile compounds and water (if present).

注記 1: Regulatory definitions can change under the control of the EPA. To secure currency, contact your local air pollution control agency.

1.2 This practice provides guidance for selecting an appropriate ASTM test method to determine VOC content.

1.3 Certain organic compounds that may be released under the specified baking conditions are not included in the coating VOC content because they are not obviously involved in atmospheric photochemical reactions. This negligible photochemically reactive compound is referred to as, in this practice, exempt volatile compounds.

注記 2: See Appendix X3 for information on the EPA definition of VOC and the current list of EPAapproved exempt volatile compounds for use in coatings.

1.4 The VOC content is calculated as (1) the volume of the coating reduced water and exempted volatile compounds, そして (2) the volume of the coating solid, そして (3) the weight of the coating solid.

ASTM D 3960-2018 揮発性有機化合物の測定 (VOC) 塗料および関連コーティングにおける

1.5 SI 単位で表された値は標準値として考慮される必要があります。.

1.6 この規格は、すべての安全問題に対処することを目的としたものではありません, もしあれば, その使用に関連する. 適切な安全性を確立するのは、この規格の使用者の責任です。, 健康および環境慣行を確認し、使用前に規制制限の適用可能性を判断するため.

1.7 この国際規格は、国際規格開発の原則に関する決定で確立された国際的に認められた標準化原則に従って開発されました。, 世界貿易機関の貿易の技術的障壁に関する委員会が発行したガイドラインと勧告.