Значение и использование

5.1 The quality standard for artist’s coatings requires the evaluation of various appearance characteristics of the coating film. Coloring strength determination (test method D4838) requires, in particular, the preparation of scratch coatings for colorimetric measurement. Other evaluations such as color designation, прозрачность, блеск, and color difference measurements also require pull-down samples.

5.2 The artist’s tube paint has a paste consistency that makes traditional film coating methods difficult to use, especially for dry paints.

5.3 Художники’ coatings differ in two properties that are important for film preparation, namely transparency and drying time. Colorimetric determination and some other types of evaluation require completely hidden substrate paint samples. Very transparent coatings require such a thick film to be completely covered, dry time is too long or the sample surface is flawed. When complete cover-up is required, this practice aims to provide an opaque film without these defects by applying a series of films.

ASTM D4941-16 Стандартная практика изготовления покрытий, наносимых художником

Шаг 1: Объем

1.1 This practice includes the production of uniform films of artist tube coatings and other non-flow pigment coatings using coatings designed for low viscosity coatings.

1.2 Includes information on how to obtain opaque samples from these coatings.

1.3 Значения, выраженные в единицах СИ, считаются стандартными.. Значения, указанные в скобках, предназначены только для справки..

1.4 Настоящий стандарт не предназначен для решения всех проблем безопасности., если таковые имеются, связанный с его использованием. Пользователи настоящего стандарта обязаны установить соответствующие правила техники безопасности и охраны труда, а также определить применимость нормативных ограничений перед использованием..