GB/T 30789.2-2014 Active
GB/T 30789.2-2014 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 2:Assessment of degree of blistering
Abstract
This part of GB/T 30789 provides a method for evaluating the foaming grade by comparing with standard pictures.
The standard pictures provided in this part illustrate the foaming size 2, 3, 4, 5 and the number of foams (density) of each foaming size 2, 3, 4, 5.
ISO 46281 defines the evaluation system for the number and size of defects caused by coating aging and the degree of uniform change in appearance, and outlines the general principles of the evaluation system. This evaluation system is applicable to defects and uniform changes caused by artificial accelerated aging and natural exposure, such as color changes, for example: yellowing.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 30789.2-2014 |
| CCS | Paints, pigments, and dyes |
| ICS | Paints and varnishes |
| Implement Date | 2014-12-01 |