Detail of GB/T 9755-2024

Introduction of GB/T 9755-2024

GB/T 9755-2024 Synthetic resin emulsion based wall coatings 1 Scope This document specifies the product classification and grading, requirements, test methods, inspection rules as well as marking, packaging and storage of the synthetic resin emulsion based wall coatings. This document is applicable to the wall coatings, which are made from a mixture of pigments, extender pigment and various additives with the synthetic resin emulsion as base material by emulsion polymerization mode and formed into a thin coating layer with smooth surface after application. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 175 Common portland cement GB/T 1727-2021 General preparation of paint film GB/T 1728-2020 Methods of test for drying time of coatings of paints and putties GB/T 1766-2008 Paints and varnishes - Rating schemes of degradation of coats GB/T 1865-2009 Paints and varnishes - Artificial weathering and exposure to artificial radiation - Exposure to filtered xenon-arc radiation GB/T 1910-2015 Newsprint GB/T 3186 Paints varnishes and raw materials for paints and varnishes - Sampling GB/T 5206 Paints and varnishes - Terms and definitions GB/T 6682-2008 Water for analytical laboratory use - Specification and test methods GB/T 6750-2007 Paints and varnishes - Determination of density - Pyknometer method GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 9265-2009 Determination for alkali resistance of film of architectural paints and coatings GB/T 9266-2009 Determination of scrub resistance of film of architectural paints and coatings GB/T 9268-2008 Determination of freeze-thaw resistance of latex and emulsion paints GB/T 9271-2008 Paints and varnishes - Standard panels for testing GB/T 9278 Temperatures and humidities for conditioning and testing of paint specimens GB/T 9750 Marks for package of coating products GB/T 9780-2013 Test method for dirt pickup resistance and stain removal of film of architectural coatings and paint GB/T 13452.2-2008 Paints and varnishes - Determination of film thickness GB/T 13491 General rule for packing of coatings GB/T 15608 The Chinese color system GB/T 16422.3-2022 Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps GB/T 20777 Paints and varnishes - Examination and preparation of samples for testing GB/T 23981.1-2019 Paints and varnishes - Determination of hiding power - Part 1: Determination of contrast ratio of white and light coloured paints GB/T 30648.2-2015 Paints and varnishes - Determination of resistance to liquids - Part 2: Water immersion method GB/T 37356 Paints and varnishes - Lighting and procedure for visual assessments of coatings HG/T 3001-1999 Iron blue pigments HG/T 4565-2013 High-temperature resistant coatings for boilers and auxiliary equipments JG/T 25-2017 Test method for temperature change resistance of architectural coatings JG/T 210-2018 Primer for interior and exterior wall JC/T 412.1-2018 Fiber cement flat sheets - Part 1: Non-asbestos fiber cement flat sheets JGJ 52 Standard for technical requirements and test method of sand and crushed stone (or gravel) for ordinary concrete 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 5206 apply. 4 Product classification and grading 4.1 Product classification Wall coatings are classified by use occasion into: —Coatings for interior wall; —Coatings for exterior wall. Coatings for interior wall are classified by coating type into: —Primer for interior wall; —Topcoat for interior wall. Coatings for exterior wall are classified by coating type into: —Primer for exterior wall; —Topcoat for exterior wall. Primer for interior wall is classified by mechanism of action on the substrate into: —Type I, reinforced type; —Type II, ordinary type. Primer for exterior wall is classified by requirements for alkali burnout and salting-out resistance and water permeability into: —Type I, used for occasions with high requirements for alkali burnout and salting-out resistance and water permeability; —Type II, used for occasions with general requirements for alkali burnout and salting-out resistance and water permeability. 4.2 Product grading Topcoat for interior wall and topcoat for exterior wall are classified into acceptable product, first-grade product and superior product. 5 Requirements 5.1 The primer shall be as specified in Table 1.

Contents of GB/T 9755-2024

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Product classification and grading 5 Requirements 6 Test methods 7 Inspection rules 8 Marking, packaging and storage Annex A (Normative) Test method for alkali burnout resistance and alkali burnout and salting-out resistance Annex B (Normative) Test method for water permeability Annex C (Normative) Test method for scrubbing resistance (topcoat for exterior wall)