Some standard content:
ICS87.040
Chemical Industry Standard of the People's Republic of China
HG/T3655—1999
Ultraviolet curing coatings for woodenware
Ultraviolet curing coatings for woodenware1999-06-16 Issued
2000-06-01 Implementation
State Administration of Petroleum and Chemical Industry
W.bzsoso.cOIHG/T3655—1999
In recent years, ultraviolet curing wood coatings have developed rapidly in my country, but no national standard or industry standard for this product has been formulated. In order to stabilize and improve the quality of this product, meet the needs of the domestic market, and adapt to technical and economic exchanges, this standard is specially formulated. This standard is formulated based on the product quality of major domestic manufacturers of ultraviolet curing wood coatings. Appendix A and Appendix B of this standard are both appendices to the standard. This standard was proposed by the Technical Supervision Department of the former Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Paints and Pigments. The drafting units of this standard are: China Resources Paint Factory Co., Ltd., Shunde City, Guangdong Province, and Changzhou Paint Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are: Yao Juan, Liu Jiyuan, Liu Hong, Jie Yushan, Wen Jinsong, and Li Feng. I
W.bzsoso.cOm1 Scope
Chemical Industry Standard of the People's Republic of China
Ultraviolet (UV) Curing Wood Coatings
Ultraviolet curing coatings for woodenwareHG/T3655—1999
This standard specifies the requirements, test methods, marking, labeling, packaging, storage and transportation of ultraviolet curing wood coatings. This standard applies to ultraviolet curing coatings for decoration and protection of wooden floors, furniture or other wooden articles. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1250-1989 Methods for expressing and determining limit values GB/T1724-1979 (1989) Method for determining the fineness of paint GB/T1727-1992 Method for general preparation of paint films GB/T1728-1979 (1989) Method for determining the drying time of paint and putty films GB/T1730-1993 Method for determining the hardness of paint films Pendulum damping test (neg ISO1522:1973) GB/T1768-1979 (1989) Method for determining the wear resistance of paint films GB/T1931-1991 Method for determining the moisture content of wood GB3186-1982 (1989) Sampling of paint products (neq ISO1512 : 1974) GB/T4893.3—1985 Determination of dry heat resistance of furniture surface paint film GB/T6682—1992 Specifications and test methods for water used in analytical laboratories GB/T9271—1988 Standard test panels for paints and varnishes (eqvISO1514:1984) GB/T9274—1988 Determination of resistance of paints and varnishes to liquid media (eqvISO2812:1974) GB9278—1988 Temperature and humidity for condition adjustment and testing of paint samples (eqvISO3270:1984) GB/T9286—1998 GB/T9750—1988 GB/T 9754—1988www.bzxz.net
Scratch test for paint and varnish films (eqvISO2409:1972)Paint product packaging mark
Paints and varnishesDetermination of specular gloss at 20°, 60° and 85° of paint films not containing metallic pigments (eqvISo2813.1978)
GB/T13452.2—1992Determination of film thickness of paint and varnishes (eqvISO2808:1974)GB/T13491—1992
2General rules for packaging of coating products
HG/T2458—1993
3. General rules for inspection, transportation and storage of coating products 3 Requirements
The products shall comply with the requirements of Table 1.
Approved by the State Bureau of Petroleum and Chemical Industry on June 16, 1999, and implemented on June 1, 2000
W.bzsoso.cOmState in container
Fineness, um
Curing speed, s or m/min
Appearance of paint film
Gloss, 60°
Cross-cut test, grade
Water resistance of composite layer
Alcohol resistance of composite layer
Abrasion resistance (750g/500r), g
Dry heat resistance of composite layer (90±2)℃, grade
Test method
4.1 General conditions for the test
4.1.1 Sampling
Carry out in accordance with the provisions of GB3186.
4.1.2 Test board
HG/T3655—1999
Table 1 Requirements for UV-cured wood paint
Even after stirring
Glossy: 10; Semi-gloss and matte: 35
Glossy: 90, Semi-gloss and matte: to be agreed
Glossy: 0.60, Semi-gloss and matte: 0.5072h No blistering, wrinkling, or falling off
8h No blistering, wrinkling, or falling off
Except for hardness, gloss and wear resistance, which use glass plates, maple-faced plywood is used for other test items. Glass plates should comply with the provisions of GB/T9271. Maple-faced plywood should comply with the requirements of Appendix A. 4.1.3 Preparation of paint film
Use the method in 6.2 or 6.4.2 of GB/T1727-1992. You can also use a wire rod applicator or coating method to paint. 4.1.3.1 Preparation of single-layer paint film test board:
After the test board is painted, let it stand for 1min to 10min (the specific time shall be specified in the product standard), and then use a UV curing device to cure. 4.1.3.2 Preparation of composite layer test board:
&) Composite of UV curing topcoat and non-UV curing primer Select and apply non-UV curing primer according to the regulations of the production unit, and then apply topcoat and use UV curing device to cure. Coating users may also choose non-photocuring primers, but they should conduct compatibility tests with photocuring topcoats to confirm that the selected primer and photocuring topcoat composite system meet the requirements of Chapter 3 of this standard. b) Composite of UV-curing topcoat and UV-curing primer Apply one coat of primer to the surface-treated test panel, cure it with a UV-curing device, and then use 400 sandpaper to grind the test panel flat according to the provisions of 3.4 in GB/T9271-1988; apply one coat of primer in the same way, cure, grind, and finally apply topcoat, and cure it with a UV-curing device.
4.1.3.3 When preparing light-cured paint films, the following parameters of the UV curing device should be recorded: number of UV lamps, emission wavelength range of the lamps, lamp type (such as medium-pressure mercury lamps), lamp linear power, lamp tube length, lamp power, lamp usage time, irradiation distance, and reflector shape. Other parameters should be added if necessary.
4.1.3.4 After the test plate is made, it shall be conditioned for 24 hours under the standard environmental conditions specified in GB9278 before various tests are carried out. 4.1.4 Paint film thickness and coating amount
The paint film thickness shall be measured in accordance with the provisions of GB/T13452.2, and the coating amount shall be measured in accordance with the provisions of Appendix B. Unless otherwise specified, when the test plate is a glass plate, the dry paint film thickness is: primer (18 ± 3) μm, topcoat (13 ± 3) μm, and the paint film thickness of the abrasion resistance test is (45 ± 5) μm.
When the test plate is a three-ply board, the coating amount is calculated based on the dry film: the coating amount of the primer is (30~40) g/m2, the total coating amount of the primer in the composite coating is (30~40) g/m2, and the coating amount of the topcoat is (20~30) g/m2. 4.2 State in the container
Visually observe after opening the container. A small amount of precipitation is allowed at the bottom of the container. After stirring with a spatula, it can be defined as "uniform state after stirring" when it is easy to mix evenly.
4.3 Fineness
Measured in accordance with GB/T1724.
4.4 Curing speed
It can be measured with a single UV lamp or a UV curing device on a production line. The measurement unit is s or m/min. The determination of paint film drying is carried out according to Method A in Chapter 3 of GB/T1728-1979 (1989). 4.5 Appearance of paint film
Visual observation.
4.6 Gloss
Measured according to the provisions of GB/T9754, with an incident angle of 60.4.7 Cross-hatch test
The cross-hatch test between the primer and the substrate (1mm spacing) and between the composite layer and the substrate (2mm spacing) shall be carried out in accordance with the provisions of GB/T9286. 4.8 Hardness
The test shall be carried out in accordance with the provisions of Chapter 4 of GB/T1730-1993. 4.9 Water resistance
The test shall be carried out in accordance with the method A of GB/T9274.
The test water shall meet the requirements of grade 3 water in GB/T6682. 4.10 Alcohol resistance
The test shall be carried out in accordance with the method A of GB/T9274.
4.11 Abrasion resistance
The test shall be carried out in accordance with the provisions of GB/T1768.
4.12 Dry heat resistance
The test shall be carried out in accordance with the provisions of GB/T4893.3. 4.13 Determination of test results
The test results shall be determined according to the rounded value comparison method in GB/T1250. 3
Ww.bzsoso：com5 Inspection rules
5.1 According to HG/T2458.
HG/T3655—1999
5.2 All technical requirements listed in this standard are type inspection items. Among them, the state in the container, fineness, curing speed, paint film appearance, gloss, cross-cut test and hardness are factory inspection items. Under normal production conditions, type inspection shall be carried out at least once every six months. 6 Marking, labeling, packaging
6.1 Marking
According to the provisions of GB/T9750.
6.2 Label
The product should be accompanied by a label indicating: the product's standard number, model, name, net content, qualified mark, factory name, factory address, production date, batch number, and storage period.
6.3 Packaging
Perform according to the provisions of GB/T13491.
7 Purchase, storage and transportation
Perform according to the provisions of HG/T2458.
W.HG/T3655—1999
Appendix A
(Standard Appendix)
Maple face plywood
In order to ensure that the clean surface of the treated maple face plywood is not directly touched by hand or in contact with other dirt before painting, it should usually be handled with clean gloves.
A1 Scope
This appendix specifies the maple face plywood used in UV-curing wood paint and the surface treatment procedures before painting. A2 Test board
A2.1 Materials
The moisture content of the test board is less than 12% (tested according to GB/T1931). The maple surface is required to be flat, smooth, oil-free, free of knots, joints and other defects, and the texture should be consistent with the length direction of the board. The thickness of the test board is (2.5~4.0) mm, and the other dimensions of the test board should comply with the provisions of the test method. A2.2 Surface treatment of the test board
The maple surface of the test board should be used as the coating surface. Wipe the dust on the test board with a dry cloth, and use No. 0 sandpaper or No. 200 water sandpaper to grind the test board flat according to the operating procedures specified in 3.4 of GB/T9271-1988. Wipe the dust on both sides and edges of the test board with a dry cloth, and store it in an environment with a temperature of (23±2)℃ and a relative humidity of (50±5)% for more than one week.
Before using the test board, the dust on the board surface should be wiped clean. Appendix B
(Standard Appendix)
Determination of coating weight
B1 Scope
This appendix specifies the method for determining the coating weight (in dry film) of UV-curing wood coatings. B2 Determination of primer coating weight
B2.1 Use the test panels treated and weighed as specified in Appendix A. B2.2 Prepare the paint film as specified in 4.1.3 of this standard. B2.3 Weigh the test panels that have been painted and dried, and calculate the mass of dry film per square meter, which is the coating weight (g/m2). B3 Determination of composite layer coating weight
B3.1 Use the test panels that have been treated and weighed as specified in Appendix A. B3.2 Prepare and polish two layers of primer film as specified in 4.1.3 of this standard. B3.3 Weigh the test panels that have been painted, dried and polished, and calculate the mass of dry film per square meter, which is the coating weight of the primer (g/m2).
B3.4 Prepare the topcoat film on the primer film prepared in B3.2 according to the provisions of 4.1.3 of this standard. B3.5 Weigh the test plate and calculate the mass of the topcoat dry film per square meter, which is the coating amount of the topcoat (g/m2). 5
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