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本测试方法规定了油漆及相关涂料在荧光紫外线和冷凝装置中根据G151 和 G154测试方法进行加速曝露测试时对测试条件的选择。
1.1 This practice covers the selection of test conditions for accelerated exposure testing of coatings and related products in fluorescent UV and condensation devices conducted according to Practices G 151 and G 154. This practice also covers the preparation of test specimens, and the evaluation of test results.
Table 1 describes commonly used test conditions.
NOTE 1—Previous versions of this practice referenced fluorescent UV devices described by Practice G 53, which described very specific equipment designs. Practice G 53 has been withdrawn and replaced by Practice G 151, which describes performance criteria for all exposure devices that use laboratory light sources, and by Practice G 154, which gives requirements for exposing nonmetallic materials in fluorescent UV devices.
NOTE 2—ISO 11507:1997 also describes fluorescent UV-condensation exposures of paints and coatings.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
D 358 Specification for Wood to Be Used As Panels in Weathering Tests of Coatings
D 523 Test Method for Specular Gloss
D 609 Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating Products
D 610 Test Method for Evaluating Degree of Rusting on Painted Steel Surfaces
D 659 Method of Evaluating Degree of Chalking of Exterior Paints
D 660 Test Method for Evaluating Degree of Checking of Exterior Paints
D 662 Test Method for Evaluating Degree of Erosion of Exterior Paints
D 714 Test Method for Evaluating Degree of Blistering of Paints
D 772 Test Method for Evaluating Degree of Flaking (Scaling) of Exterior Paints
D 823 Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
D 1005 Test Methods for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
D 1186 Test Methods for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to a Ferrous Base
D 1400 Test Method for Nondestructive Measurement of Dry Film Thickness of Nonconductive Coatings Applied to a Nonferrous Metal Base
D 1729 Practice for Visual Appraisal of Colors and Color Differences of Diffusely Illuminated Opaque Materials
D 1730 Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting
D 2244 Practice for Calculation of Color-Tolerances and Color Differences from Instrumentally Measured Color Coordinates
D 2616 Test Method for Evaluation of Visual Color Difference With a Gray Scale
D 3359 Test Methods for Measuring Adhesion by Tape Test
D 3980 Practice for Interlaboratory Testing of Paint and Related Materials3
D 4214 Test Methods for Evaluating Degree of Chalking of Exterior Paint Films
D 5870 Practice for Calculating Property Retention Index of Plastics
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E 1347 Test Method for Color and Color-Difference Measurement by Tristimulus (Filter) Colormetry
G 53 Practice for Operating Light- and Water-Exposure Apparatus (Fluorescent UV-Condensation Type) for Exposure of Nonmetallic Materials3
G 113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
G 141 Guide for Addressing Variability in Exposure Testing on Nonmetallic Materials
G 147 Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests
G 151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices That Use Laboratory Light Sources G 154 Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials
G 169 Guide for Application of Basic Statistical Methods to Weathering Tests
2.2 ISO Standard:
ISO 11507:1997 Paints and Varnishes—Exposure of Coatings to Artificial Weathering—Exposure to Fluorescent UV and Water
2.3 SAE Standard:5
SAE J2020 Accelerated Exposure of Automotive Exterior Materials Using a Fluorescent UV Condensation Apparatus
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