GB/T 30789.2-2014 Active National standards

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

Publish Date: 2014-07-08 Implement Date: 2014-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 30789.2-2014

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Paints, pigments, and dyes

ICS Name: Paints and varnishes

Publish Date: 2014-07-08

Implement Date: 2014-12-01

Pages: 14 pages

Scope

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.