Limit of harmful substances of woodenware coatings
1 Scope
This standard specifies the product classification, requirements, test methods, inspection rules, marks for package and implementation of this standard involved in the allowable limit of harmful substances of woodenware coatings to human body and environment.
This standard is applicable to various woodenware coatings (including putty, primer and topcoat) for on-site coating and industrial coating except special functional coatings such as colored paints, bridging paints, wood stains, and open paints.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1725-2007 Paints varnishes and plastics - Determination of non-volatile-matter content
GB/T 3186 Paints varnishes and raw materials for paints and varnishes - Sampling
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 judgement of limiting values
GB/T 9750 Marks for package of coating products
GB/T 9754-2007 Paints and varnishes - Determination of specular gloss of non-metallic paint films at 20°, 60°and 85°
GB/T 18446-2009 Binders for paints and varnishes - Determination of monomeric diisocyanates in isocyanate resins
GB/T 23985-2009 Paints and varnishes - Determination of volatile organic compound (VOC) content - Difference method
GB/T 23986-2009 Paints and varnishes - Determination of volatile organic compound (VOC) content - Gas-chromatographic method
GB/T 23990-2009 Determination of the contents of benzene toluene ethylbenzene and xylene in coatings by gas chromatography
GB/T 23991-2009 Determination of soluble harmful elements content of coatings
GB/T 23992-2009 Determination of chlorhydrocarbon content in coatings - Gas chromatographic method
GB/T 23993-2009 Determination of formaldehyde content of waterborne coatings - Spectrophtometric method with acetylacetone
GB/T 30646-2014 Determination of phthalate plasticizers content in coatings - Gas chromatography/mass spectrometry method
GB/T 30647-2014 Determination of harmful elements total content of coatings
GB/T 31414-2015 Water based coatings—Determination of surfactant—Alkylphenol polyethoxylates
GB/T 34675-2017 Determination of volatile organic compound(VOC) content in radiation curable coatings
GB/T 34682-2017 Determination of volatile organic compound(VOC) content in reactive diluent containing coatings
GB/T 36488-2018 Determination of polycyclic aromatic hydrocarbons in coatings
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
polyurethane coatings
a kind of coating with the polyurethane (allophanate) resin, which is formed by the reaction between the polyisocyanate and the compound containing active hydrogen, as main film-forming material
3.2
nitrocellulose coatings
a kind of coating with the nitroncellulose, which is prepared by the reaction between the nitric acid and sulfuric acid mixture and the cellulose ester, as main film-forming material
3.3
alkyd coatings
a kind of coating with the alkyd resin, which is prepared by the polycondensation of the polybasic acid, fatty acid (or vegetable oil) and the polyhydric alcohol, as main film-forming material
