Смисъл и цел 3.1 Тази процедура е ускорена оценка на задържането на гранули, обратно отражение, дневен цвят, нощен цвят и характеристики на износване на течни материали за маркиране на трафика. Използва се за определяне на експлоатационния живот на такива маркери на полето. Същата процедура се прилага за оценка на надлъжни линии за...
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. Не могат да бъдат установени количествени граници, които да определят дали спектралните или хроматографските разлики са наистина значителни. разбира се, важно е да се тества за...
Overview This guide covers the selection and use of procedures for testing traffic paints both in the laboratory and in the field. Това ръководство обхваща тестването на премиксиран продукт за покритие на консистенция на спрей, което трябва да е подходящо за използване като отразяващ ръководство за движение по павирани пътища. The...
Смисъл и цел 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) тест,...
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...
Смисъл и цел 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. ASTM D 6944-2020 Thermal Cycling Resistance...
1. Обхват 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...
Смисъл и цел 5.1 Graffiti on buildings and structures is a persistent and growing problem. Many applications have been produced that are designed to resist graffiti marks or provide coatings on surfaces from which such marks can be easily removed. The procedure described in this practice provides a set of standard...
