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Wood coatings resistant to yellowing assay
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Basic data
| Standard ID | GB/T 23983-2009 (GB/T23983-2009) |
| Description (Translated English) | Wood coatings resistant to yellowing assay |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G50 |
| Classification of International Standard | 87.040 |
| Word Count Estimation | 8,878 |
| Date of Issue | 2009-06-02 |
| Date of Implementation | 2010-02-01 |
| Quoted Standard | GB/T 1725; GB/T 3186; GB/T 6283; GB/T 6750; GB/T 9278; GB/T 20777; GB/T 21862.2; GB/T 21862.3; GB/T 21862.4; GB/T 9271; GB/T 23987 |
| Regulation (derived from) | Announcement of Newly Approved National Standards No. 8, 2009 (No. 148 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 standard specifies the aging equipment with fluorescent UV coatings for single or multi-layer coating yellowing resistance test method for determination. This standard applies to all types of wood coatings Determination of resistance to yellowing. |
GB/T 23983-2009: Wood coatings resistant to yellowing assay
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Wood coatings resistant to yellowing assay
ICS 87.040
G50
National Standards of People's Republic of China
Coatings resistant to yellowing assay
Posted 2009-06-02
2010-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee paint pigment.
This standard was drafted. CNOOC Changzhou coating Chemical Research Institute.
The main drafters of this standard. Cao Xiaodong, Ji Xiao Pei.
Coatings resistant to yellowing assay
1 Scope
This standard specifies the test methods for aging equipment UV fluorescence of single or multi-layer coating film coatings were yellowing resistance measurement.
This standard applies to all types of wood coatings yellowing resistance measurement.
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.
GB/T 3186 Paints, varnishes and raw materials for paints and varnishes - Sampling (GB/T 3186-2006, ISO 15528.2000, IDT)
GB/T 9271 Paints and varnishes - Standard panels for (GB/T 9271-2008, ISO 1514.2004, MOD)
GB/T 9278 paint sample conditioning and testing temperature and humidity (GB/T 9278-2008, ISO 3270. 1984, Paintsand
varnishesandtheirrawmaterials-Temperaturesandhumiditiesforconditioningandtesting, IDT)
GB/T 23987 Paints and varnish coating artificial climate aging exposure exposed to fluorescent UV and water (GB/T 23987-
2009, ISO 11507.2007, IDT)
Principle 3
Using fluorescent UV coating equipment for artificial weathering test, its purpose is to produce agreed by the device radiation exposure or energy supplier
Given exposure time, so that one or a few properties of the coating to achieve a given degree of change. Usually after exposure to the performance of their coating
Unexposed coating (comparison sample) performance compared to or simultaneously with the exposure of aging properties known coating (reference sample) performance compared with there
Interested parties pre-agreed indicators to assess these properties.
Compared with natural aging, artificial weathering simulated only a limited number of factors that influence the aging process, and by strengthening control and to increase
Accelerated aging. The impact of the aging process for many reasons, an exact simulation of natural climate effects of coating all the factors are not
Possible, so simple with the results of artificial weathering to predict the result of exposure under natural conditions is not desirable.
4 Equipment
4.1 Test Chamber
The main chamber is made of corrosion resistant material. Its built-in fluorescent UV lamps, or heat sink and test nozzle plate rack, radiometers, should
In line with GB/T 23987.
4.2 Lamp
This test uses UVA-340 lamp shall comply with GB/T 23987.
5 Sampling
According to GB/T 3186 provisions to take the test product (or coating system for each product) of a representative sample.
6 test plates
6.1 Substrate
Unless otherwise agreed or specified, the test substrate using the specified 7.2 168h after continuous irradiation is not more than 0.5 ΔE white outer
With ceramic tile or other materials suitable for white substrates, test plate should be smooth, its size should be adapted to the test plate frame size.
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