GB/T 23987-2009 PDF EnglishUS$85.00 · In stock · Download in 9 seconds
GB/T 23987-2009: Paints and varnishes -- Exposure of coatings to artificial weathering -- Exposure to fluorescent UV lamps and water Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 23987-2009: Paints and varnishes -- Exposure of coatings to artificial weathering -- Exposure to fluorescent UV lamps and water---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/GBT23987-2009 ICS 87.040 G 50 National Standard of the People’s Republic of China GB/T 23987-2009 / ISO11507: 2007 Paints and varnishes - Exposure of coatings to artificial weathering - Exposure to fluorescent UV lamps and water (ISO11507: 2007, IDT) ISSUED ON: JUNE 2, 2009 IMPLEMENTED ON: FEBRUARY 1, 2010 Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China Table of Contents1 Scope ... 4 2 Normative reference standards ... 4 3 Terms and Definitions ... 5 4 Principle ... 6 5 Instrument and Equipment ... 6 6. Sampling ... 12 7. Test panels ... 13 8. Operating steps ... 14 9 Calibrations ... 15 10 Inspection of test panels (aging criterion) ... 15 11 Precision ... 16 12 Supplementary test conditions ... 16 13 Test report ... 16 References ... 18 Foreword This Standard equivalently adopts international standard ISO11507: 2007 Paints and varnishes - Exposure of coatings to artificial weathering - Exposure to fluorescent UV lamps and water (English version). This Standard equivalently translates ISO11507: 2007. In order to use easily, the editorial revision of this Standard is as follows: — REPLACE “this international standard” with “this Standard”; — DELETE the foreword of international standard. This Standard was proposed by China Petroleum and Chemical Industry Association. This Standard is administered by National Technical Committee of Paints and Pigments for Standardization. This Standard was drafted by: the Changzhou Research Institute of Coatings Chemicals in CNOOC, and Atlas Material testing technology Ltd. The main drafters of this Standard are: Cao Xiaodong, Ji Xiaopei, and heng Ge. Paints and varnishes - Exposure of coatings to artificial weathering - Exposure to fluorescent UV lamps and water1 ScopeThis Standard specifies the test methods of using test equipment, including fluorescent UV lamps and gel or spraying water, to determine the coatings' durability to artificial weathering. Note: Because the UV of fluorescent UV lamps only simulates partial ultraviolet spectrum of sunlight, so the test panels only endures little amount of the ultraviolet which is more destructive portion in the spectrum. Comparing with sunlight, this test lacks of visible-light and infrared light's radiant energy, so the temperature of heated test panels shall not be higher than that of surrounding air when using it.2 Normative reference standardsClauses in the following documents become part of this Standard through the quotation of this Standard. For dated references, all the subsequent amendments (except the content of errata) or revisions do not apply to this Standard. However, all parties who enter into agreement based on this Standard are encouraged to study if the latest version of these documents can be used. For undated references, the latest version applies. GB/T 3186-2006 Paints and varnishes and raw materials for paints and varnishes – sampling (GB/T3186-2006, ISO15528: 2000, IDT) GB/T 6682-2008 Water for analytical laboratory use-Specification and test methods (GB/T6682-2008, ISO3696: 1987, MOD) GB/T9271-2008 Paints and varnishes - standard panels for testing plate (GB/T9271-2008, ISO1514: 2004, MOD) GB/T13452.2-2008 Paints and varnishes - Determination of film thickness (GB/T 13452.2-2008, ISO2808: 2007, IDT) Note: Suitable methods include the methods specified in GB/T 9754, GB/T 11186.1-GB/T 11186.3, GB/T 9761 and ISO 4628-1 ~ ISO 4628-8 and ISO 4628-10. Unless otherwise agreed, the test panels during the inspection shall not be washed or polished.11 PrecisionThe precision data of the standard is not yet available.12 Supplementary test conditionsAs for any specific application of the method specified by this Standard, in addition to above clauses, there are more details to be given, such as the following: a) The substrate material, the thickness of the substrate and the surface treatment of the substrate; b) The method of applying tested coatings onto substrate; c) Before exposure, the time and condition of coating drying (or baking) and placing (if applicable); d) Before the start of exposure, the test plates’ adjustment time and conditions (if the same test plate has been carried out other test in advance); e) Thickness of dry coating, in μm, and whether the measurement method according to GB/T 13452.2 requirement is a single-layer or multi-layer coating system; f) All the detail of conditions and time; g) Any specific test requirements, for example, agreed on using degree of color-change to assess color fastness.13 Test reportThe test report shall at least include the following: a) IDENTIFY all the details of the test product (manufacturer, trademark, batch number, etc.); ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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