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Standard Practice for Fluorescent Ultraviolet (UV) Lamp Apparatus Exposure of Plastics
Automatische name übersetzung:
Standard Praxis für Fluorescent ultravioletten (UV) Lampe Apparat Exposure von Kunststoffen
NORM herausgegeben am 15.7.2013
Bezeichnung normen: ASTM D4329-13
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 15.7.2013
SKU: NS-26862
Zahl der Seiten: 6
Gewicht ca.: 18 g (0.04 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
degradation, exposure, fluorescent UV, light exposure, ultraviolet, ICS Number Code 83.080.01 (Plastics in general)
Significance and Use | ||||||||||||||||||||||
4.1 The ability of a plastic material to resist deterioration of its electrical, mechanical, and optical properties caused by exposure to light, heat, and water can be very significant for many applications. This practice is intended to induce property changes associated with end-use conditions, including the effects of ultraviolet solar irradiance, moisture, and heat. The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure. (4.2 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.5,6 Therefore, exposure of a similar material of known performance (a control) at the same time as the test materials is strongly recommended. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results. 4.3 Test results will depend upon the care that is taken to operate the equipment in accordance with Practice G154. Significant factors include regulation of line voltage, temperature of the room in which the device operates, temperature control, and condition and age of the lamp. |
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1. Scope | ||||||||||||||||||||||
1.1 This practice covers specific procedures and test conditions that are applicable for fluorescent UV exposure of plastics conducted in accordance with Practices G151 and G154. This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
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Standard Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials
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Standard Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests
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Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
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Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials
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ISO?4892-3
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Plastics--Methods of Exposure to Laboratory Light Sources--Part 3, Fluorescent UV Lamps
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SAE?J2020
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Accelerated Exposure of Automotive Exterior Materials Using a Fluorescent UV and Condensation Apparatus
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Standard Guide for Application of Basic Statistical Methods to Weathering Tests
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Standard Tables for Reference Solar Ultraviolet Spectral Distributions: Hemispherical on 37° Tilted Surface |
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