T/DASI 004-2019 Exterior wall waterproof decorative paint

Scope

Scope: This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation, and storage for exterior wall waterproof decorative coatings. This standard applies to exterior wall waterproof decorative coatings; Main technical content: The main content of this standard is compiled based on multiple national and industry standards and adjusted according to actual circumstances. This standard references standards such as GB/T 23445-2009 "Polymer Cement Waterproof Coatings" and GB/T 9755-2014 "Synthetic Resin Emulsion Exterior Wall Coatings", and stipulates the technical indicators for exterior wall waterproof decorative coatings as follows: 1. Resistance to artificial weathering: Exterior wall decorative coatings are mainly used for painting building exteriors with the primary purpose of decoration. As building coatings used on exteriors, environmental climate is an essential standard indicator for the product. Resistance to artificial weathering is a main performance indicator of the coating obtained by simulating the effects of environmental climate on the coating. This indicator is mainly judged by observing the appearance after the test. After 250 hours of continuous testing, there is no significant change in appearance, ensuring the performance and quality of the exterior wall coating after construction. 2. Resistance to washing, alkali resistance, and salt resistance: Exterior wall coatings are subject to various environmental impacts. Resistance to washing, alkali resistance, and salt resistance are the most intuitive performance indicators of the product. Resistance to washing ≥ 2000, no abnormalities in the alkali resistance test after 48 hours, and no abnormalities in the salt resistance test after 72 hours reflect the durability of the product and regulate the quality of the product to ensure the orderly operation of the market. 3. Flexibility and adhesion strength: Flexibility reflects the flexib

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