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GB 18581-2020 PDF English

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US$185.00 · In stock · Download in 9 seconds
GB 18581-2020: Limit of Harmful Substances of Woodenware Coatings
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GB 18581: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivery	Name of Chinese Standard	Status
GB 18581-2020	English	185	Add to Cart	0-9 seconds. Auto-delivery	Limit of Harmful Substances of Woodenware Coatings	Valid
GB 18581-2009	English	85	Add to Cart	0-9 seconds. Auto-delivery	Indoor decorating and refurbishing materials -- Limit of harmful substances of solvent based coatings for woodenware	Obsolete
GB 18581-2001	English	439	Add to Cart	4 days	Indoor decorating and refurbishing materials -- Limit of harmful substances of solvent coatings for woodenware	Obsolete

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Similar standards

GB 18582 GB/T 23994 GB/T 20624.2 GB 30981.1

GB 18581-2020: Limit of Harmful Substances of Woodenware Coatings

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB18581-2020
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 87.040 G 51 Replacing GB 18581-2009, GB 24410-2009 Limit of Harmful Substances of Woodenware Coatings Issued on. MARCH 04, 2020 Implemented on. DECEMBER 01, 2020 Issued by. State Administration for Market Regulation; Standardization Administration of PRC.

Foreword... 3 1 Scope... 5 2 Normative References... 5 3 Terms and Definitions... 6 4 Product Classification... 7 5 requirements... 8 6 Test Methods... 11 7 Inspection Rules... 13 8 Packaging Mark... 14 9 Implementation of Standard... 15 Appendix A (Normative) Determination of Moisture Content – Gas Chromatography... 16 Bibliography... 20

1 Scope

This Standard specifies the product classification, requirements, test methods, inspection rules, packaging marks and implementation of the standards involved in the allowable limits of substances harmful to humans and the environment in woodenware coatings. This Standard is applicable to all types of woodenware coatings for on-site and factory coatings such as filler, primer and topcoat except for special functional coatings such as Lacquer, bridging paint, wood stain, open effect paint, etc.

2 Normative References

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document. 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 - Pycnometer 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 Product 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 Diisocyanate 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

3 Terms and Definitions

For the purpose of this document, the following terms and definitions apply. 3.1 Polyurethane coatings A type of coating that uses polyurethane resin formed by the reaction of polyisocyanate and active hydrogen-containing compound as the main film-forming material. 3.2 Nitrocellulose coatings A type of coating that uses nitrocellulose prepared by the esterification reaction of a mixture of nitric acid and sulfuric acid with cellulose as the main film-forming material. 3.3 Alkyd coatings A type of coating that uses alkyd resin prepared by polyacid, fatty acid (or vegetable oil) and polyhydric alcohol as the main film-forming material. 3.4 Unsaturated polyester coatings A type of coating that uses unsaturated polyester resins with carbon-carbon double bonds on the polymer chain that are easily crosslinked with reactive diluents as the main film-forming materials. 3.5 Volatile organic compound; VOC Organic compounds that participate in atmospheric photochemical reactions, or organic compounds determined in accordance with relevant provisions. 3.6 Volatile organic compound content; VOC content The mass of the volatile organic compounds in the coating that is measured under the specified conditions.

4 Product Classification

This Standard classifies woodenware coatings into solvent-based coatings (including filler), water-based coatings (including filler), radiation curing coatings (including filler), and powder coatings. Thereof, solvent-based coatings (including filler) are divided into polyurethane, nitrocellulose (only for factory coating use),

5 requirements

The limit value of the limit of harmful substances in woodenware coatings shall meet the requirements of Table 1.

6 Test Methods

6.1 Sampling Sampling according to the provisions of GB/T 3186, or according to the agreed method. The sampling amount is determined according to the inspection requirements. 6.2 Test methods 6.2.1 VOC content 6.2.1.1 Density Perform according to the provisions of GB/T 6750-2007; the test temperature is (23±0.5) °C. 6.2.1.2 Luster Perform according to the provisions of GB/T 9754-2007.Use a wet film preparation device with a groove depth of (100 ± 2) µm to prepare a sample plate on a flat glass plate. The varnish shall use black glass or flat glass with a matte black paint on the back as the substrate. After drying the sample plate for 48h at a temperature of (23±2) °C and a relative humidity of (50±5) %, test it with a 60° specular gloss meter. 6.2.1.3 Moisture content Perform according to the provisions of Appendix A. Perform according to the provisions of GB/T 34682-2017.The moisture shall not be measured, the moisture content is set to zero. 6.2.1.7 VOC content in radiation curable coatings (including filler) Perform according to the provisions of GB/T 34675-2017.Filler samples are not tested for moisture content (moisture content is set to zero) and density. 6.2.2 Formaldehyde content Perform according to the provisions of GB/T 23993-2009. 6.2.3 Total lead (Pb) content Perform according to the provisions of GB/T 30647-2014. 6.2.4 Soluble heavy metal content Perform according to the provisions of GB/T 23991-2009. 6.2.5 Total sum content of glycol ether and ether ester Perform according to the provisions of GB/T 23986-2009.The calculation of the content of glycol ether and ether ester is carried out according to 10.2 in GB/T 23986- 2009; and converted into milligrams per kilogram (mg/kg). 6.2.6 Benzene content, total sum content of toluene and xylene (including ethylbenzene) 6.2.10 Methanol content Perform according to the provisions of GB/T 23986-2009.The calculation of methanol content is carried out according to 10.2 of GB/T 23986-2009.

7 Inspection Rules

7.1 Type inspection 7.1.1 Under normal production conditions, the type inspection shall be carried out at least once a year. The type inspection items include all the requirements listed in this Standard. 7.1.2 The type inspection shall be carried out at any time in one of the following situations. 7.2 Judgment of inspection results 7.2.1 The judgment of the test result shall be carried out according to the rounding-off comparison method specified in GB/T 8170-2008. 7.2.2 When reporting the inspection results, the application ratio under the specified application condition of the product shall be indicated at the same time. 7.2.3 When the inspection results of all items meet the requirements of this Standard, the product meets the requirements of this Standard.

8 Packaging Mark

8.1 In addition to the product packaging mark complies with provisions of GB/T 9750, products that have passed the inspection according to this Standard may be clearly indicated on the packaging mark. 8.3 The classification and product type satisfying to this Standard shall be indicated on the packaging mark or in the product manual. 8.4 Solvent-based coatings intentionally added with water shall be clearly indicated on the package mark or in the product manual. 8.5 For polyurethane, unsaturated polyester and other multi-component curing coatings, the applicable period shall be indicated on the package mark or in the product manual.

9 Implementation of Standard

9.1 Nitrocellulose solvent-based woodenware coatings shall not be used in interior decoration since the date of implementation of this Standard. 9.2 During the random inspection of coating products under application condition at the coating site, the sampling inspection against polyurethane, unsaturated polyester and other multi-component curing coatings shall be carried out within the applicable period of the product. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.

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Question 4: Do you accept my currency other than USD?

Answer: Yes. www.ChineseStandard.us -- GB 18581-2020 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.

Question 5: Should I purchase the latest version GB 18581-2020?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 18581-2020 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

How to buy and download a true PDF of English version of GB 18581-2020?

A step-by-step guide to download PDF of GB 18581-2020_English

Step 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB 18581-2020".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
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