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
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.
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)
