GB/T 30789.7-2015 Active National standards

GB/T 30789.7-2015 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 7:Assessment of degree of chalking by velvet method

GB/T 30789.7-2015 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 7:Assessment of degree of chalking by velvet method

Publish Date: 2015-05-15 Implement Date: 2015-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 30789.7-2015

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Paints, pigments, and dyes

ICS Name: Paints and varnishes

Publish Date: 2015-05-15

Implement Date: 2015-10-01

Pages: 5 pages

Scope

This part of GB/T 30789 specifies a method for assessing the degree of chalking, which is particularly suitable for white or other colored paint coatings on rough surfaces and multi-coat systems (for example, with a roughness greater than that specified in paragraph 4 of the roughness comparison specimen G in ISO 85031). The method specified in this part can also be used to assess the degree of chalking on smooth surfaces and multi-coat systems, but the method specified in ISO 46286 is more suitable. This test method is applicable to coatings and multi-coat systems on mineral substrates, such as fiber cement boards, bricks, concrete, and base mortar. The test is not affected by the surface structure. Experienced operators can use this method effectively for laboratory and on-site assessments.

Development Information

Word Count: 6 Thousand words Pages: 5 pages

Same series standard

GB/T 30789.1-2015 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects ,and of intensity of uniform changes inappearance—Part 1:General introduction and designation system GB/T 30789.4-2015 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 4:Assessment of degree of cracking GB/T 30789.5-2015 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 5:Assessment of degree of flaking GB/T 30789.6-2015 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 6:Assessment of degree of chalking by tape method GB/T 30789.8-2015 Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 8:Assessment of degree of delamination and corrosion around a scribe or other artificial defect

Referenced Standards

ISO 4628-1 ISO 4628-6:1990 ISO 8503-1

Adopt standards

ISO 4628-7:2003

Related Standards

GB 3186-1982 Replaced

GB 3186-1982 Sampling paint products

Publish Date: 1982-09-01

GB/T 4653-1984 Active

GB/T 4653-1984 The general technical specifications on infrared radiation paints

Publish Date: 1984-08-20

GB/T 5206.1-1985 Replaced

GB/T 5206.1-1985 Paints and varnishes—Vocabulary—Part 1:General terms

Publish Date: 1985-07-16

GB/T 5207-1985 Abolished

GB/T 5207-1985 Coatings—Determination of the danger classification by flash testing (rapid equilibrium method)

Publish Date: 1985-07-16

GB/T 5208-1985 Replaced

GB/T 5208-1985 Coatings—Flash point test—Rapid equilibrium method

Publish Date: 1985-07-16

GB/T 5209-1985 Active

GB/T 5209-1985 Paints and varnishes—Determination of resistance to water—Water immersion method

Publish Date: 1985-07-16