T/SDTL 05-2021 Active Group standards

T/SDTL 05-2021 The determination of washability of architectural art paint coatings (roller brush)

Publish Date: 2021-12-31 Implement Date: 2022-01-28 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SDTL 05-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Paints, pigments, and dyes

ICS Name: Paints and varnishes

Publish Date: 2021-12-31

Implement Date: 2022-01-28

Scope

Scope: This document specifies the determination of washability (roll brush) for flat coatings and coatings with artistic designs of less than 2mm in height; Main technical content: At present, the domestic and international standards for the determination of washability of architectural coatings mainly include GB/T 9266-2009 "Determination of Washability of Architectural Coatings", GB/T 9756-2018 "Interior Wall Coatings of Synthetic Resin Emulsions", GB/T 9755-2014 "Exterior Wall Coatings of Synthetic Resin Emulsions", and ASTM D2486, D3450, D4213, D4828. However, except for the different substrates and thicknesses of the test panels, all these standards require that the test panels be placed horizontally on the washing instrument during the washability test, which easily leads to the formation of water stagnation on the sample and the longer the soaking time, the more likely it is to affect the test results. This standard refers to the concept of automatic car washing and first proposes the concept of washability roll brush. T/SDTL 05-2021 "Determination Method of Washability (Roll Brush) for Art Coatings Used in Architecture" refers to the concept of automatic car washing. By rolling brush washing, the surface of the coating film and the groove areas of the artistic designs are thoroughly cleaned; the design of the roll brush refers to the requirements of ASTM D 2486-2017 and follows international conventions; GB/T 9266 requires that the test panels be placed horizontally, which easily leads to the formation of water stagnation on the sample and seriously affects the test results. Therefore, this standard creatively adopts a vertical fixed method with a 75° angle to the horizontal for the test panels, which better ensures the outflow of the washing solution and does not accumulate on the surface of the sample to affect the test results, and is more suitable for the complex and changeable shapes of artistic coatings.