GB/T 23999-2009 PDF English
Search result: GB/T 23999-2009
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| GB/T 23999-2009 | English | 150 |
Add to Cart
|
0-9 seconds. Auto-delivery.
|
Water Based Coatings for Woodenware for Indoor Decorating and Refurbishing
| Valid |
PDF Preview: GB/T 23999-2009
GB/T 23999-2009: PDF in English (GBT 23999-2009) GB/T 23999-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 87.040
G 51
Water Based Coatings for Woodenware for Indoor
Decorating and Refurbishing
ISSUED ON: JUNE 2, 2009
IMPLEMENTED ON: FEBRUARY 1, 2010
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Classification of Products ... 5
5 Requirements ... 6
6 Test Methods ... 8
7 Inspection Rules ... 13
8 Marking, Packaging and Storage ... 14
Bibliography ... 15
Water Based Coatings for Woodenware for Indoor
Decorating and Refurbishing
1 Scope
This Standard specifies the definition, classification, requirements, test methods,
inspection rules and packaging mark of water-based coatings for surface decoration
and protection of indoor wooden substrates.
This Standard is applicable to polyurethane, acrylic, acrylic-polyurethane and other
types of room-temperature dry single-component or bi-component water-based
coatings for woodenware.
2 Normative References
Through the reference in this Standard, the clauses of the following documents
become clauses of this Standard. In terms of references with a specified date, all the
subsequent modification sheets (excluding the corrected content) or revised versions
are not applicable to this Standard. However, the various parties that reach an
agreement in accordance with this Standard are encouraged to explore the possibility
of adopting the latest version of these documents. In terms of references without a
specified date, the latest version is applicable to this Standard.
GB/T 1250 Rules for Expression and Judgement of Limiting Values
GB/T 1724 Methods of Test for Fineness of Grind of Paints
GB/T 1725 Paints, Varnishes and Plastics - Determination of Non-volatile-matter
Content (GB/T 1725-2007, ISO 3251:2003, IDT)
GB/T 1728-1979 Methods of Test for Drying Time of Coatings of Paints and Putties
GB/T 1766 Paints and Varnishes - Rating Schemes of Degradation of Coats
GB/T 1768 Method of Test for Abrasion Resistance of Paint Films (GB/T 1768-2006,
ISO 7784-2:1997, IDT)
GB/T 3186 Paints, Varnishes and Raw Materials for Paints and Varnishes - Sampling
(GB/T 3186-2006, ISO 15528:2000, IDT)
GB/T 4893.1-2005 Furniture - Assessment of Surface Resistance to Cold Liquids
GB/T 4893.3-2005 Furniture - Assessment of Surface Resistance to Dry Heat
GB/T 6682-2008 Water for Analytical Laboratory Use - Specification and Test Methods
(ISO 3696:1987, MOD)
GB/T 6739 Paints and Varnishes - Determination of Film Hardness by Pencil Test
(GB/T 6739-2006, ISO 15184:1998, IDT)
GB/T 9278 Temperatures and Humidities for Conditioning and Testing of Paint
Specimens (GB/T 9278-2008, ISO 3270:1984, Paint and Varnish and Their Raw
Materials - Temperatures and Humidities for Conditioning and Testing, IDT)
GB/T 9279 Paints and Varnishes - Scratch Test (GB/T 9279-2007, ISO 1518:1992, IDT)
GB/T 9286-1998 Paints and Varnishes - Cross Cut Test for Films (eqv ISO 2409:1992)
GB/T 9750 Marks for Package of Coating Products
GB/T 9754 Paints and Varnishes - Determination of Specular Gloss of Non-metallic
Paint Films at 20°, 60° and 85° (GB/T 9754-2007, ISO 2813:1994, IDT)
GB/T 9755-2001 Synthetic Resin Emulsion Coatings for Exterior Wall
GB/T 13491 General Rule for Packing of Coatings
GB/T 20624.2 Paints and Varnishes - Rapid-deformation (impact resistance) Tests -
Part 2: Falling-weight Test Small-area Indenter (GB/T 20624.2-2006, ISO 6272-2:2002,
IDT)
GB/T 23982 Test Method for Block Resistance of Wood Coatings
GB/T 23987 Paints and Varnishes - Exposure of Coatings to Artificial Weathering -
Exposure to Fluorescent UV Lamps and Water (GB/T 23987-2009, ISO 11507:2007,
IDT)
3 Terms and Definitions
The following terms and definitions are applicable to this Standard.
3.1 Water Based Coatings for Woodenware
Water based coatings for woodenware refer to coatings that use water as a dispersion
medium for decoration and protection of the surface of wooden substrates.
4 Classification of Products
In accordance with the practical purposes and functions, water-based coatings for
woodenware are divided into four types: A, B, C and D, which respectively represent:
In accordance with the stipulations of touch dry Method B and hard dry Method A in
GB/T 1728-1979, respectively conduct touch dry and hard dry test.
6.4.5 Storage stability
Place about 0.5 L of sample into a suitable plastic or glass container. Leave about 10%
of space in the container. After sealing it, place it into a (50 ± 2) °C constant-
temperature drying oven. After 7 d, take it out; at (23 ± 2) °C, place it for 3 h. In
accordance with the method in 6.4.1, examine the “state in the container”. If after
stirring, it is uniform and without lumps, then, it is evaluated as "no abnormality". For
bi-component coating, each component shall be respectively inspected.
6.4.6 Freeze-thaw resistance
In accordance with the stipulations of 5.5 in GB/T 9755-2001, conduct the test. For bi-
component coating, merely the main agent shall be inspected.
6.4.7 Appearance of coating film
Under scattered sunlight, conduct visual observation of the test panel. If the coating
film is uniform, and without abnormalities, such as: sagging, blooming, pinholes,
cracking and peeling, then, it shall be evaluated as “normal”.
6.4.8 Luster (60°)
In accordance with the stipulations of GB/T 9754, conduct the test.
6.4.9 Polishability
Use 400# water sandpaper to manually polish for 20 times. If the coating film can be
easily polished to a flat and smooth surface, then, it shall be evaluated as “easy to
polish”.
6.4.10 Hardness (scratch)
In accordance with the stipulations of GB/T 6739, conduct the test. The pencil is
ZHONGHUA Brand 101 drawing pencil.
6.4.11 Adhesion
In accordance with the stipulations of GTB/T 9286-1998, conduct the test. The space
between grids is 2 mm.
6.4.12 Impact resistance
In accordance with the stipulations of GB/T 20624.2, conduct the test. Use a 12.7 mm
spherical punch; the mass of the punch is 300 g. Adjust the dropping height of the
punch, so that the diameter of the impact mark on the surface of the test panel is within
6.4.17 Alkali resistance
The test and result evaluation method are the same as the room-temperature water
resistance test. The test solution is 50 g/L NaHCO3. The test duration is 1 h. After the
test, place it for 1 h, then, observe it.
6.4.18 Alcohol resistance
The test and result evaluation method are the same as the room-temperature water
resistance test. The test solution is 50% (volume fraction) ethanol solution. The test
duration is 1 h. After the test, place it for 1 h, then, observe it.
6.4.19 Pollution resistance
The test and result evaluation method are the same as the room-temperature water
resistance test. The test solution is 1 h. After the test, place it for 1 h, then, observe it.
Vinegar resistance: the test solution is fermented vinegar.
NOTE: fermented vinegar shall comply with GB 18187-2000. Products produced by
Jiangsu HENGSHUN Vinegar Co., Ltd. are recommended.
Tea resistance: the test solution is green tea: add 250 mL boiling water to 2 g of green
tea; at room temperature, place it for 5 min, then, immediately use the tea water for the
test.
NOTE: Lipton green tea is recommended.
6.4.20 Resistance to dry heat
In accordance with the stipulations of GB/T 4893.3-2005, conduct the test. The test
temperature is (70 ± 2) °C; the test duration is 15 min.
6.4.21 Yellowing resistance
In accordance with the stipulations of GB/T 23987, conduct the test. Use UVA (340)
lamp as the light source; place the test panel in a dry phase (non-condensing)
fluorescent ultraviolet aging machine whose test conditions can meet: blackboard
temperature of (60 ± 3) °C and irradiance of 0.68 W/m2. Throughout the process,
maintain continuous illumination for 168 h. After the test is over, take it out; compare it
with the test panel that has not been irradiated. Use a chromatic meter to determine
the color change (E*).
7 Inspection Rules
7.1 Inspection Classification
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
|