ASTM International

Standard Test Method for Measurement of the Surface Tension of Solid Coatings, Substrates and Pigments using Contact Angle Measurements
 N D7490

Annotation

This test method describes a procedure for the measurement of contact angles of two liquids, one polar and the other nonpolar, of known surface tension on a substrate, pigment (in the form of a disk), or cured or air dried coating in order to calculate the surface properties (surface tension and its dispersion and polar components) of the solid.

The total solid surface tension range that can be determined using this method is approximately 20 to 60 dyn/cm.

The values stated in CGS units (dyn/cm) are to be regarded as standard. No other units of measurement are included in this standard.

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 determine the applicability of regulatory limitations prior to use.

*A Summary of Changes section appears at the end of this standard

Автоматический перевод:

Метод Стандартной пробы для Измерения Поверхностного натяжения Твердых Покрытий, Оснований и Пигментов с помощью Измерений Краевого угла

Этот метод испытаний описывает процедуру для измерения краевых углов двух жидкостей, одной полярной и, другое неполярное, известного поверхностного натяжения на основании, пигмент (в форме диска), или вылеченный или воздух высушило покрытие для вычисления поверхностных свойств (поверхностное натяжение и его дисперсия и полярные компоненты) тела.