ISO 4892-2老化测试内容和方法

紫外光老化试验箱ISO4892-2***际标准以“塑料—暴露于实验室光源的方法”为总标题，由以下部分组成：第1部分：通则、第2部分：氙弧灯、第3部分：荧光紫外灯、第4部分：开放式碳弧灯，紫外光老化试验箱ISO 4892 的本部分的附录A仅作参考之用。中华人民共和*********标准制定的GB/T 16422.2-1999/ISO4892-2:1994代替GB/T9344--1988标准规定了塑料实验室氙弧灯光源的暴露试验方法。通则在GB/T 16422.1给出.标准所包含的条文，通过在本标准中引用而构成为本标准的条文。本标准出版时，所示版本均为有效。所有标准都会被修订，使用本标准的各方面探讨使用下列标准zui新版本的可能性。

GB/T15596—1995 塑料暴露于玻璃下日光或自然气候或人工光后颜色和性能变化的测定(eqvISO4582:1980)GB/T16422.1—1996 塑料实验室光源暴露试验方法 第1部分：通则(eqvISO4892.1-1994)

英文摘要

ISO4892-2:2013 specifies methods for exposing specimens to xenon-arc light in thepresence of moisture to reproduce the weathering effects (temperature, humidityand/or wetting) that occur when materials are exposed in actual end-useenvironments to daylight or to daylight filtered through window glass.

　　1 Scope

　　This part of ISO 4892specifies methods for exposing specimens to xenon-arc light in the presence of moisture to reproduce theweathering effects that occur when materials are exposed in actual end-use environments to daylight orto daylight filtered through window glass.The specimens are exposedto filtered xenon-arc light under controlled conditions (temperature, humidity and/or wetting). Varioustypes of xenon-arc light source and various filter combinations may be used tomeet different requirements.Specimen preparation andevaluation of the results are covered in other International Standards forspecific materials.

　　General guidance is givenin ISO 4892-1.NOTE Xenon-arc exposures ofpaints and varnishes are described in ISO 11341.

　　2 Normative references

　　The following referenceddocuments are indispensable for the application of this document. For dated references, only theedition cited applies. For undated references, the latest edition of thereferenced document (including anyamendments) applies.

　　ISO 4582, Plastics —Determination of changes in colour and variations in properties after exposure to daylight under glass,natural weathering or laboratory light sources

　　ISO 4892-1, Plastics —Methods of exposure to laboratory light sources — Part 1: General guidance

　　3 Principle

　　3.1 A xenon arc, fittedwith suitable filters and properly maintained, is used to simulate the spectralpower distribution of daylight inthe ultraviolet (UV) and visible regions of the spectrum.

　　3.2 Specimens are exposedto various levels of light, heat, relative humidity and water (see 3.4) under controlled environmental conditions.

　　3.3 The exposure conditionsmay be varied by selection of

　　a) the light filter(s);

　　b) the irradiance level; 

Q-Sun各型号氙灯试验箱用于ISO 4892-2的具体设置

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