意义和目的 3.1 This procedure is an accelerated evaluation of bead retention, inverse reflectance, daytime color, nighttime color and wear characteristics of fluid traffic marking materials. It is used to determine the service life of such markers in the field. The same procedure is applied to evaluate longitudinal lines to...
Meaning and Purpose All the methods provided involve a comparison between the spectra or chromatograms of the control and test samples to determine if they show significant differences. Quantitative limits cannot be established to guide whether spectral or chromatographic differences are truly significant. 当然, it is important to test for...
Overview This guide covers the selection and use of procedures for testing traffic paints both in the laboratory and in the field. This guide covers the testing of a premixed coating product of a spray-able consistency, which should be suitable for use as a reflective traffic guide on paved roads. The...
意义和目的 1 For a paint to function satisfactorily, it needs to adhere to the substrate on which it is applied. It has been found that this test method can be used as a simple method to evaluate the adhesion of coatings. Although this method is a qualitative (subjective) 测试,...
Standard test method for Determination of Tensile Strength of Coatings by Portable Adhesion Tester The publication classification number of this standard is D 4541; The numbers following the classification numbers represent the time of initial use and, in the case of revisions, the last revision year. The numbers in parentheses represent...
意义和目的 4.1 The purpose of this test is to obtain information about the ability of the coating system to adhere to the substrate under thermal stress. It is assumed that the coating system tested is coated and cured according to the coating manufacturer's instructions. 美国材料试验协会D 6944-2020 Thermal Cycling Resistance...
1. 范围 1.1 This practice describes a solvent friction technique to evaluate the solvent resistance of organic coatings based on chemical changes during curing. The technology can be used in the lab, in the field, or in assembly plants. The material D4752 is the preferred choice for the ethyl silicate zinc-rich...
意义和目的 5.1 建筑物和结构上的涂鸦是一个持久而越来越多的问题. 已经生产了许多应用程序，这些应用旨在抵抗涂鸦标记或在表面上提供涂料，可以轻松地从中删除此类标记. The procedure described in this practice provides a set of standard...
