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Standard Practice for Xenon-Arc Exposure of Plastics Intended for Indoor Applications
Přeložit název
NORMA vydána dne 15.1.2021
Označení normy: ASTM D4459-21
Datum vydání normy: 15.1.2021
Kód zboží: NS-1016992
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
colorfastness, indoor exposure, lightfastness, light exposure, xenon-arc,, ICS Number Code 83.080.01 (Plastics in general)
Significance and Use | ||||||||||||||||||||||||
4.1?This practice is intended to simulate the effects produced by exposure to solar radiation through glass. This practice uses exposure in a xenon-arc device equipped with window glass filters and operated in accordance with Practices G151 and G155. Note 2:?Practice D4674
describes exposures in a device that uses a combination of
fluorescent cool white and ultraviolet (UV) lamps to simulate the
effects of exposures to indoor fluorescent light and window glass
filtered daylight.
4.2?WarningVariation in results may be expected when operating conditions are varied within the accepted limits of this practice. Therefore, all references to the use of this practice must be accompanied by a report prepared in accordance with Section 9 that describes the specific operating conditions used. Refer to Practice G151 for detailed information on the caveats applicable to use of results obtained in accordance with this practice. Note 3:?Additional information on sources of variability and
on strategies for addressing variability in the design, execution
and data analysis of laboratory accelerated exposure tests is found
in Guide G141.
4.3?Test results will depend upon the care that is taken to operate the equipment in accordance with Practice G155. Significant factors include regulation of line voltage, temperature and humidity control, and condition and age of the lamps and filters. 4.4?Reproducibility of test results between laboratories has been shown to be good when the stability of materials is evaluated in terms of performance ranking compared to other materials or to a control.4,5 Therefore, exposure of a similar material of known performance (a control) at the same time as the test materials is strongly recommended. The number of specimens of the control material should be the same as that used for test materials. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results. |
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1. Scope | ||||||||||||||||||||||||
1.1?This practice covers specific procedures and test conditions that are applicable for exposure of plastics in window glass-filtered xenon-arc devices in accordance with Practices G151 and G155 for evaluating the stability of plastics intended for use in indoor applications. 1.2?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 1:?There is no known ISO equivalent to this
practice.
1.3?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||||||||||||||||||
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