ASTM G154-16

ASTM G154-16發(fā)行信息

標準號：ASTM G154-16

發(fā)行者：STANDARD by ASTM International

發(fā)行時間：03/01/2016

中文名：非金屬材料曝光用熒光紫外線（UV）燈設(shè)備的操作標準實施規(guī)程

英文名：Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials

ASTM G154-16是個關(guān)于暴露在陽光日曬、持續(xù)潮濕、加熱而導致產(chǎn)品性能老化的測試方法，現(xiàn)行標準修訂于2016年。

ASTM G154-16適用范圍

1.1本規(guī)程僅限于操作熒光紫外線燈和水裝置的基本原則；其本身并沒有提供具體結(jié)果。

1.2本規(guī)范旨在與規(guī)定應(yīng)用特定暴露條件的實踐或方法結(jié)合使用，并用于評估材料性能變化的方法。本規(guī)程旨在再現(xiàn)材料在陽光（直接或通過車窗玻璃）和實際使用中的水分如雨露時產(chǎn)生的風化效應(yīng)。本實踐僅限于獲取、測量和控制暴露條件的程序。

注1：規(guī)程G151描述了在使用實驗室光源的加速試驗裝置中暴露非金屬材料時使用的一般程序。

注2：附錄中列出了許多暴露程序；但是，本規(guī)程并未規(guī)定最適合待測試材料的暴露條件。

1.3受控制環(huán)境條件下，試樣暴露在熒光紫外線下。介紹了不同類型的熒光紫外光源。

注3：在本標準中，術(shù)語UV光和UV輻射可互換使用。

1.4試樣制備和結(jié)果評估包含在ASTM方法或特定材料規(guī)范中。一般指南見實施規(guī)程G151和ISO?4892-1。

注4：ISO?4582和規(guī)程D5870中描述了有關(guān)測定暴露后性能變化和報告這些結(jié)果的方法的一般信息。

1.5 SI單位中規(guī)定的值應(yīng)視為標準值。本標準不包括其他計量單位。

1.6本標準并不旨在解決與其使用相關(guān)的所有安全問題（如有）。本標準的使用者有責任在使用前建立適當?shù)陌踩徒】祵嵺`，并確定監(jiān)管限制的適用性。

1.7本標準在技術(shù)上與ISO?4892-3和ISO 16474-3類似。

1. Scope

1.1 This practice is limited to the basic principles for operating a fluorescent UV lamp and water apparatus; on its own, it does not deliver a specific result.

1.2 It is intended to be used in conjunction with a practice or method that defines specific exposure conditions for an application along with a means to evaluate changes in material properties. This practice is intended to reproduce the weathering effects that occur when materials are exposed to sunlight (either direct or through window glass) and moisture as rain or dew in actual usage. This practice is limited to the procedures for obtaining, measuring, and controlling conditions of exposure.

Note 1: Practice G151 describes general procedures to be used when exposing nonmetallic materials in accelerated test devices that use laboratory light sources.

Note 2: A number of exposure procedures are listed in an appendix; however, this practice does not specify the exposure conditions best suited for the material to be tested.

1.3 Test specimens are exposed to fluorescent UV light under controlled environmental conditions. Different types of fluorescent UV lamp sources are described.

Note 3: In this standard, the terms UV light and UV radiation are used interchangeably.

1.4 Specimen preparation and evaluation of the results are covered in ASTM methods or specifications for specific materials. General guidance is given in Practice G151 and ISO?4892-1.

Note 4: General information about methods for determining the change in properties after exposure and reporting these results is described in ISO?4582 and Practice D5870.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 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.

1.7 This standard is technically similar to ISO?4892-3 and ISO 16474-3.

2. Referenced Documents

ASTM Standards

D5870 Practice for Calculating Property Retention Index of Plastics

D6631 Guide for Committee D01 for Conducting an Interlaboratory Study for the Purpose of Determining the Precision of a Test Method

G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials

G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources

G177 Tables for Reference Solar Ultraviolet Spectral Distributions: Hemispherical on 37 Tilted Surface

ISO Standards

ISO 16474-3 Paints and VarnishesMethods of Exposure to Laboratory Light SourcesPart 3: Fluorescent UV Lamps

ISO4582 PlasticsDetermination of the Changes of Colour and Variations in Properties After Exposure to Daylight Under Glass, Natural Weathering or Artificial Light

ISO4892-1

QUV老化試驗箱用于ASTM G154 cycle-4的測試方法

QUV老化試驗箱用于ASTM G154 cycle-4的測試方法