色漆和清漆.用铅笔试验测定漆膜硬度

[中文适用范围]： 该文件规定了一种通过将已知硬度的铅笔推过薄膜来确定薄膜硬度的方法。 该测试可以在油漆、清漆或相关产品的单层涂层上进行，也可以在多层涂层系统的上层上进行。 尚未发现这种快速测试对于比较不同涂层的铅笔硬度有用。 它更适用于为一系列铅笔硬度表现出显着差异的涂层面板提供相对评级。 该方法仅适用于光滑表面。 [外文原描述]： This document specifies a method for determining the film hardness by pushing pencils of known hardness over the film. The test can be performed on a single coating of a paint, varnish or related product, or on the upper layer of a multi-coat system. This rapid test has not been found to be useful in comparing the pencil hardness of different coatings. It is more useful in providing relative ratings for a series of coated panels exhibiting significant differences in pencil hardness. The method is applicable only to smooth surfaces.