標準號：BS EN ISO 6504-1-1983
中文標準名稱：涂料和清漆.遮蓋力的測定.白色和淺色涂料用庫比爾凱-芒克法
英文標準名稱：Paints and varnishes - Determination of hiding power - Kubelka-Munk method for white and light-coloured paints
標準類型：G50
發布日期：1983/12/30 12:00:00
實施日期：1983/12/30 12:00:00
中國標準分類號：G50
國際標準分類號：87.040
適用范圍：Specifies a method to be used for determining the spreading rate necessary to give a contrast ratio of 98 % of coating materials. The method is restricted to paint films having the tri-stimulus value of Y 70; it is not applicable to fluorescent or metallic paint materials. The principle of the method is based on the Kubelka and Munk equations relating the scattering and absorption coefficients of pigmented films to their colour and opacity. For the determination of hiding power, both the reflectance of a film of thickness, t, on a black background and the reflectivity are required.