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Limit of harmful substances of exterior wall coatings
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GB 24408-2009
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Basic data | Standard ID | GB 24408-2009 (GB24408-2009) | | Description (Translated English) | Limit of harmful substances of exterior wall coatings | | Sector / Industry | National Standard | | Classification of Chinese Standard | G51 | | Classification of International Standard | 87.040 | | Word Count Estimation | 27,254 | | Date of Issue | 2009-09-30 | | Date of Implementation | 2010-06-01 | | Quoted Standard | GB/T 1250; GB/T 1725-2007; GB/T 3186; GB/T 6682; GB/T 6750-2007; GB/T 9750; GB/T 18446-2009; GB/T 23993-2009 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 10 of 2009 (No. 150 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard specifies the construction of exterior latex paint harmful to humans and the environment of hazardous substances allowable limit requirements, test methods, inspection rules and signs, etc. Package Contents. This standard applies to paint directly on the site, right in cement-based and other non-metallic building materials for the substrate decorative and protective outer surface of various water and solvent-based exterior paint exterior paint. | GB 24408-2009: Limit of harmful substances of exterior wall coatings---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Limit of harmful substances of exterior wall coatings
ICS 87.040
G51
National Standards of People's Republic of China
Building exterior paint harmful substances
Posted 2009-09-30
2010-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
All the technical contents of this standard is mandatory.
The Standard Appendix A, Appendix B, Appendix C, Appendix D, Appendix E Appendix F and normative appendix.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee paint pigment.
This standard is drafted by. CNOOC Changzhou coating Chemical Research Institute, Guangdong Carpoly Chemical Co., Ltd., China Paint (Shenzhen) have
Limited, three trees paint Co., Ltd. Shenzhen Hirota green paint, ICI Swire Paints (China) Co., Ltd., Zhejiang
Jiang Tian woman paints Group Co. Ltd., Jiangsu East Asian elephants Zhiqi Limited, Guangdong Huarun Paints Co., Ltd., Shanghai three silver paints limited
the company.
Participated in the drafting of this standard. Rohm and Haas (China) Investment Co., Ltd., Nanjing Tienhsiang Paint Co., Ltd., Dongguan large-Chemical Co.
Ltd., PPG Coatings (Shanghai) Co., Ltd., the new Opel Chemical (Shanghai) Co., Ltd., Shanghai Sto Ltd., Changxing Technology (on
Sea) Limited, BASF (China) Co., Ltd., Changzhou brilliant Chemical Co., Ltd. Nanjing Longhu paint, Shenzhen Exhibition Chenda
Chemical Co., Ltd., Tai O Nankang Paint Co., Ltd. Kunshan City Shiming Technology Development Co., Ltd., Guangdong Industrial Co., Ltd. Hualong paint.
The main drafters of this standard. Peng Jufang, Kong Zhi Yuan, Wang on behalf of the people, Wang Zhi, Luoqi Tao, Hu groups such as bears Rong Yao
Ming Yang Shaowu, Fushao Xiang,
He was born, Xu Peng, Li Jin, Huang Jianhua, Wang mold, has a text, Linxuan Yi, Xu Zhenglin QUARTERLY Dengling Xian, Shebao Ning, Chen Shousheng,
Li Jinming, Lv Shiming, Wang whole wheat.
Building exterior paint harmful substances
1 Scope
This standard specifies the construction of exterior latex paint to humans and harmful substances harmful to the environment to allow limited requirements, test methods, inspection regulations
The packaging and marking and other content.
This standard applies to paint directly in the field of cement-based and other non-metallic materials for the substrate and the outer surface of the decorative buildings
Protection of various water and solvent-based exterior paint exterior paint.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
Representation GB/T 1250 limit values and the method of determining
GB/T 1725-2007 Paints, varnishes and plastics - Determination of volatile matter content is not (ISO 3251.2003, IDT)
GB/T 3186 Paints, varnishes and raw materials for paints and varnishes - Sampling (GB/T 3186-2006, ISO 15528.2000, IDT)
GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)
GB/T 6750-2007 Paints and varnishes - Determination of density - Pycnometer method (ISO 2811-1.1997, Paintsand
varnishes-Determinationofdensity-Part 1. Pyknometermethod, IDT)
GB/T 9750 product packaging and marking paint
GB/T 18446-2009 Determination of paints and varnishes paint isocyanate resin diisocyanate monomer (ISO 10283.
2007, IDT)
GB/T 23993-2009 waterborne coatings Determination of formaldehyde - Acetylacetone spectrophotometric method
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
101.3kPa at standard atmospheric pressure, any initial boiling point equal to or lower than the organic compound 250 ℃.
3.2
Prescribed method of test product obtained VOC content.
Note 1. The water-based primer and paint to exterior walls VOC after deduction of water in grams per liter (g/L) indicates; solvent-based primer and exterior wall surfaces
VOC content of the paint, in grams per liter (g/L) indicated.
Note 2. The water-based wall putty with no deduction of water VOC count in grams per kilogram (g/kg) expressed.
4 Products
Products are divided into two categories. water-based exterior paint (including putty, primer and topcoat) and solvent-based exterior paint (including primer and topcoat). its
The solvent-based exterior paint is divided into paints, varnishes and glitter paint categories.
5 Requirements
Products harmful substances shall comply with the requirements of Table 1.
Table 1 harmful substances requirements
project
Limited value
Aqueous solvent-based exterior paint exterior paint (including primer and topcoat)
A primer coat a putty b flash paint Paints varnishes
Volatile organic compound (VOC) content/(g/L) ≤ 120 150 15g/kg 680c 700c 760c
Benzene content c /% ≤ - 0.3
Toluene, ethylbenzene and xylene content of the sum of c /% ≤ - 40
Free formaldehyde content/(mg/kg) ≤ 100 -
Free diisocyanate (TDI and HDI) content of the sum of d /% ≤
(Limit isocyanate as a curing agent, solvent-based exterior paint)
- 0.4
Glycol ethers and ether esters sum of the content of a, b, c /% ≤
(Limited to ethylene glycol monomethyl ether, ethylene glycol monomethyl ether acetate, ethylene glycol ether,
Glycol ether acetate and diethylene glycol butyl ether acetate)
0.03
Heavy metal content/(mg/kg) ≤
(Limited to paint and putty)
Lead (Pb) 1000
Cadmium (Cd) 100
Hexavalent chromium (Cr6 +) 1000
Mercury (Hg) 1000
a water-based primer and paint facades all items not consider dilution ratio.
b waterborne putty wall putty paste all items not in considering the dilution ratio; in addition to heavy metal powder putty powder test project directly, the other three are
Expressly refers to the product by the construction ratio test powder mixed with water or other liquids or adhesives later. As construction ratio within a certain range, the water should be in accordance with
Construction of the largest amount of the minimum amount of other liquids, such as adhesives after mixing ratio test.
c solvent-based exterior paint by product EXPRESS mixing ratio was measured after construction. When the amount of diluent, such as within a certain range, the ratio should be in accordance with the Construction Products
The maximum dilution ratio prescribed after mixing was measured.
d If the product dilution rate or by a two or multi-component composition, the curing agent should be measured (including diisocyanate prepolymer) in diisocyanate
Ester content, then the product expressly construction ratio calculated after mixing paint content. When the amount of diluent, such as within a certain range, the product should be in accordance with
Construction of the ratio prescribed minimum dilution ratio is calculated.
6 Test methods
6.1 Sampling
Product sampling as prescribed by GB/T 3186 will be.
6.2 Test Method
6.2.1 waterborne exterior latex paint VOC content of the test according to the standards set forth in Appendix A and Appendix B of conduct, which
Primer and topcoat test results calculated in accordance with Appendix A of A. 7.2, calculated putty product test results in accordance with Appendix A of A. 7.1
get on.
Note. All samples putty not water content and density testing.
6.2.2 waterborne exterior paints glycol ethers and ether esters sum test content requirements A according to the standards of conduct appendix. Test results
Calculated in Appendix A A. 7.3.
6.2.3 Solvent-based exterior paint volatile organic compounds (VOC) content of the test according to the standards of conduct set forth in Appendix C.
6.2.4 free formaldehyde test according to the provisions GB/T 23993-2009 performed.
6.2.5 Solvent-based exterior paint benzene content, toluene, ethylbenzene and xylene total content, glycol ethers and ether esters tested by the sum of the content of this
Appendix D required standards will be.
6.2.6 Test total content of free diisocyanate (TDI and HDI) according to GB/T 18446-2009 of regulations.
6.2.7 lead, cadmium, mercury tests prescribed in Appendix E of this standard of conduct; hexavalent chromium test according to the standards of conduct set forth in Appendix F.
Putty powder with a powder directly tested.
7 Inspection rules
7.1 standard listed all the requirements of both types of test items.
7.1.1 Under normal production conditions, type inspection at least once a year.
7.1.2 There should be one of the following type test at any time.
--- Original shape when the new product;
--- Products produced at different places;
--- Production formula, process, key sources of raw materials and products construction ratio when there is a greater change;
--- Discontinued after three months to resume production when.
7.2 determination of test results
7.2.1 test results determined in accordance with GB/T 1250 in the rounding value comparison method, when the test results and other repair about 0,0.0,0.00, knot
If reported to one significant figure.
7.2.2 powdery putty, solvent-based exterior paint products reported test results should indicate the product at the same time express the construction ratio.
7.2.3 Test results of all items meet the requirements of this standard, the product to comply with the requirements of this standard.
8 Package Marking
8.1 Product packaging and marking shall comply with the provisions of GB/T 9750 outside, according to the standard test qualified products can be expressed in the packaging logo.
8.2 For the two-component or multi-component package consisting of exterior paint products, packaging or labeling products should be clear instructions of each component construction
Ratio. The need for the construction of exterior paint diluted product, packaging or labeling product specification should be clear dilution ratio.
Appendix A
(Normative)
Test waterborne exterior paints VOC, glycol ethers and ether esters of the total content
---Gas chromatography
A. 1 Scope
This method specifies the external walls of water-based primer, paint and putty volatile organic compounds (VOC), the sum of glycol ethers and ether esters containing
Test Methods for.
This method is applicable VOC content (mass fraction) is greater than or equal to 0.1% and less than or equal to 15% of the raw material and paint
test.
A. Principle 2
The sample was diluted by gas chromatographic analysis of volatile organic compounds in the sample a variety of isolated, qualitative identification of the test compound
After using the internal standard method to test its content.
A. 3 Materials and Reagents
A. 3.1 Carrier gas. nitrogen, purity ≥99.995%.
A. 3.2 Gas. hydrogen, purity ≥99.995%.
A. 3.3 assisting gas. air.
A. 3.4 auxiliary gas (septum purge and makeup). with a carrier gas of nitrogen the same nature.
A. 3.5 Internal standard. the absence of the sample compound, and the compound can be completely separated from the other components on the chromatogram. Purity (Quality
Fraction) of at least 99%, or known purity. For example. iso-butanol, ethylene glycol monomethyl ether, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether.
A. 3.6 calibration compound
The standard calibration compound include methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, benzene, toluene, ethylbenzene, xylene, triethyl
Amine, dimethylethanolamine, 2-amino-2-methyl-1-propanol, ethylene glycol, 1,2-propanediol, 1,3-propanediol, diethylene glycol, ethylene glycol monomethyl ether, ethylene
Methyl ether acetate, ethylene glycol ethyl ether, ethylene glycol ethyl ether acetate, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, diethylene glycol ethyl ether acetate,
Diethylene glycol monobutyl ether acetate, 2,2,4-trimethyl-1,3-pentanediol. Purity (mass fraction) of at least 99%, or known purity.
A. 3.7 Dilution solvent. the organic solvent used for diluting the sample, the material does not contain any interference testing. Purity (mass fraction) of at least
99%, or known purity. For example. acetonitrile, tetrahydrofuran, methanol, or other solvents.
A. 3.8 Markers. used to distinguish between VOC and compound component non-VOC component as defined VOC. This standard adipic acid diethyl
(Boiling point 251 ℃).
A. 4 Equipment
A. 4.1 Gas chromatograph, with the following configuration.
A. 4.1.1 Inlet shunt means and the vaporization chamber liner can be replaced;
A. 4.1.2 programmed temperature controller;
A. 4.1.3 Detector
The following three types of detectors either.
A. 4.1.3.1 flame ionization detector (FID).
A. 4.1.3.2 calibrated and tuned mass spectrometer or other mass selective detector.
A. 4.1.3.3 calibrated Fourier transform infrared spectroscopy (FT-IR spectrometer).
NOTE. If you choose A. 4.1.3.2 or A. 4.1.3.3 detector to separate the qualitative identification of components, equipment should be connected to a gas chromatograph instrument and according to
Manufacturer's operating instructions.
A. 4.1.4 Column. phenyl nitrilpropionamide 6%/94% polydimethylsiloxane capillary column, polyethyleneglycol capillary column.
A. 4.2 Injector. micro syringe, a feed capacity of at least twice the volume of the sample.
A. 4.3 with vials. Approximately 20mL glass bottle with a sealable cap.
A. 4.4 Balance. Precision 0.1mg.
A. 5 GC test conditions
A. 5.1 chromatographic conditions 1
Column (column basic). 6% nitrilpropionamide phenyl/94% polydimethylsiloxane capillary column, 60m × 0.32mm × 1.0μm;
Inlet temperature. 250 ℃;
Detector. FID, temperature. 260 ℃;
Column temperature. temperature program, 80 ℃ 1min, to then 10 ℃/min was raised to 230 ℃ kept 15min;
Split ratio. Split injection, split ratio is adjustable;
Injection volume. 1.0μL.
A. 2 chromatographic conditions 5.2
Column (column confirmed). polyethyleneglycol capillary column, 30m × 0.25mm × 0.25μm;
Inlet temperature. 240 ℃;
Detector. FID, temperature. 250 ℃;
Column temperature. temperature program, 60 ℃ 1min, to then 20 ℃/min was raised to 240 ℃ kept 20min;
Split ratio. Split injection, split ratio is adjustable;
Injection volume. 1.0μL.
Note. You can also select the optimal test conditions according to the GC gas chromatograph and the performance of the test sample with the actual situation.
A. 6 Test Procedure
All tests for secondary parallel determination.
A. 6.1 Density
Density test according to the provisions of GB/T 6750-2007 were. Test temperature (23 ± 2) ℃.
A. 6.2 Moisture content
Test the moisture content in accordance with Appendix B of.
A. 6.3 VOC, glycol ethers and ether esters to the total content
A. 6.3.1 Chromatograph parameter optimization
Press A. 5 chromatographic conditions, always be aware of the calibration compound to optimize its processing, the sensitivity of the instrument,
Stability and separation at its best.
A. 6.3.2 Qualitative Analysis
The marker (A.3.8) into the gas chromatograph, record the gathered polydimethylsiloxane capillary column or 6% nitrilpropionamide phenyl/94%
Polydimethylsiloxane capillary column retention times, according to the definitions given 3.1 VOC determining end points of the chromatogram.
Have qualitative identification of the sample A. 3.6 calibration compound. A preferred method is gas chromatography with mass selective detector
(A.4.1.3.2) or FT-IR spectrometer (A.4.1.3.3) in conjunction with, and use A. 5 shows gas chromatography test conditions. It can also be used
Gas chromatograph, using a flame ionization detector (FID) (A.4.1.3.1) and A. 4.1.4 in the column, and the use of A. 5 given
Gas chromatography test conditions were recorded A. 3.6 Calibration compound in a polar difference between the two columns (two columns selected due
May be large, e.g., 6% nitrilpropionamide phenyl/94% chromatogram polydimethylsiloxane capillary column and polyethyleneglycol capillary column) on; the same
Chromatographic test conditions, the test sample after being made a qualitative comparison of the chromatogram.
A. 6.3.3 Calibration
A. 6.3.3.1 Calibration sample preparation. Weigh a certain amount (accurate to 0.1mg) A. 6.3.2 The identified compounds in various calibration
Hotels vial (A.4.3), the mass to be weighed and the content of each test sample should be in the same order of magnitude; the same number called again take the test compound
The order of the internal standard (A.3.5) with the same vial (A.4.3), the mixture was diluted with sealed vial was diluted with a solvent (A.3.7)
(A.4.3) and shaken.
A. 6.3.3.2 relative correction factor test. the test specimen under the same chromatographic test conditions press A. 6.3.1 Optimization of the provisions of the instrument
parameter. Injecting an appropriate amount of calibration compound gas chromatograph, record the chromatograms. According to formula (A.1) were calculated for each compound
Relative correction factor.
(A.1)
Where.
Ais --- internal standard peak area;
A. 6.3.3.3 If there is A. 3.6 unknown compound peaks outside the calibration compound, it is assumed with respect to the correction factor isobutanol
Sub 1.0.
A. 6.3.4 Test specimens
A. 6.3.4.1 sample preparation. Weigh the sample evenly stirring after about 1g (accurate to 0.1mg) as well as the quality of the measured object approximately equal
Internal standard (A.3.5) in vials with (A.4.3) added 10mL diluent solvent (A.3.7) diluted sample vials with seal (A.4.3) and
Shake well.
A. 6.3.4.2 Press optimal conditions during calibration setting instrument parameters.
A. 6.3.4.3 the marker (A.3.8) into the gas chromatograph, which recorded in polydimethylsiloxane capillary column or 6% nitrile propylbenzene
Yl/94% polydimethylsiloxane capillary column retention times, according to the definitions given 3.1 VOC determination chromatogram integration
end.
A. 6.3.4.4 The 1μL press A. 6.3.4.1 preparation of the sample into the gas chromatograph, record the chromatograms, and record the various retention time low
Compound peak area markers (except dilution solvent outside), then according to equation (A.2) calculate the mass contained in the sample were various compounds
fraction.
(A.2)
Where.
Ais --- internal standard peak area;
A. 7 Calculation
A. 7.1 putty product according to formula (A.3) to calculate VOC content.
(VOC) = Σ
Where.
VOC content (VOC) --- putty products in grams per kilogram (g/kg);
1000 --- conversion factor.
Test Method detection limit. 1g/kg.
A. 7.2 coating product according to formula (A.4) to calculate VOC content.
ρ (VOC) =
1-ρs ×
ρw
× ρs × 1000 (A.4)
Where.
P VOC content (VOC) --- paint products, in grams per liter (g/L);
W --- the sample mass fraction of water in grams per gram (g/g);
Density ρs --- sample in grams per milliliter (g/mL);
ρw --- the density of water in grams per milliliter (g/mL);
1000 --- conversion factor.
Test Method detection limit. 2g/L.
A. 7.3 paint and putty products, glycol ethers and ether esters sum calculation
A. 7.3.1 press formula (A.2) were calculated glycol monomethyl ether, ethylene glycol monomethyl ether acetate, ethylene glycol ether, glycol ether acetate and
e = Σ
Where.
e --- product quality glycol ethers and ether esters sum fraction,%;
Quality glycol monobutyl ether acetate) fraction in grams per gram (g/g);
100 --- conversion factor.
A. 7.3.2 Test Method detection limits. Ethylene glycol monomethyl ether, ethylene glycol monomethyl ether acetate, ethylene glycol ether, glycol ether acetate and diethylene
Alcohol ether acetate detection limits are 0.001%.
A. 8 Precision
A. 8.1 Repeatability
Same operator twice the relative deviation of the test results should be less than 10%.
A. 8.2 Reproducibility
Relative deviations between different laboratories test results should be less than 20%.
Appendix B
(Normative)
Test the moisture content
The standard moisture content by gas chromatography or Karl Fischer test. Gas chromatography for the arbitration.
B. 1 Gas Chromatography
B. 1.1 Reagents and materials
B. 1.1.1 Distilled water. in line with GB/T 6682 in the three water requirements.
B. 1.1.2 dilution solvent. anhydrous dimethylformamide (DMF), AR.
B. 1.1.3 Internal standard. anhydrous isopropanol, AR.
B. 1.1.4 Carrier gas. hydrogen or nitrogen purity ≥99.995%.
B. 1.2 Equipment
B. 1.2.1 Gas chromatograph. equipped with a thermal conductivity detector and temperature program controller.
B. 1.2.2 Column. packed porous polymer microspheres stainless steel column.
B. 1.2.3 Injector. micro syringe, a feed capacity of at least twice the volume of the sample.
B. 1.2.4 with vials. Approximately 10mL glass bottle with a sealable cap.
B. 1.2.5 scales. accuracy 0.1mg.
B. 1.3 GC test conditions
Column. Column length 1m, an outer diameter of 3.2mm, filling 177μm ~ 250μm porous polymer microspheres stainless steel column.
Vaporization chamber temperature.200 ℃;
Detector. temperature 240 ℃, current 150mA;
Column temperature. the temperature program, 80 ℃ maintained 5min, then 30 ℃/min was raised to 170 ℃ holding 5min; thermostatically, column temperature
Is 90 ℃, in isopropanol completely outflow, the oven temperature is 170 ℃, DMF until the end. If you continue to test, then the column temperature dropped to 90 ℃.
Note. You can also select the optimal test conditions according to the GC gas chromatograph and the performance of the test sample with the actual situation.
B. 1.4 Test Procedure
All tests for secondary parallel determination.
B. 1.4.1 Test water relative correction factor R
Weigh about 0.2g of distilled water (B.1.1.1) and i...
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