GB/T 16259-2008 in English

《GB/T 16259-2008建筑材料人工气候加速老化试验方法》由609（中国建筑材料联合会）归口，主管部门为中国建筑材料联合会。
本标准代替GB/T 16259-1996 《彩色建筑材料人工气候加速颜色老化试验方法》。本标准规定了建筑材料以氙灯为光源人工气候加速老化试验装置、试验条件、试验步骤、试验结果的表示及试验报告等内容。本标准与GB/T 16259-1996相比，主要内容变化如下：
―――本标准4.1.3对波长290ｎｍ～800ｎｍ 之间的光源辐照度选择（550±50）Ｗ／ｍ２，原标准则规定在300ｎｍ～890ｎｍ 波长间辐射强度为（1000±200）Ｗ／ｍ２；
―――本标准５．２选择两种黑标准温度（65±3）℃ 和（100±3）℃，而原标准规定黑板温度为（63±3）℃。

Test method for accelerated weathering of building materials

1 Scope

This standard specifies the test device, test conditions, test procedures, expression of test results and the test report for accelerated weathering of building materials with argon lamp as light source.

This standard is applicable to the determination of accelerated weathering of building materials.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

GB/T 11942 Colorimetric methods for color building materials
GB/T 16422.1-1996 Plastics—Methods of exposure to laboratory light sources—Part 1: General guidance

3 Principle

3.1 The xenon arc lamp equipped with a suitable filter is maintained so that the radiation generated is similar to the spectral energy distribution in the ultraviolet and visible regions of ground daylight.

3.2 The test specimen is exposed to a light source under specified environmental conditions.

3.3 The test procedures include the determination of the irradiance and the irradiation amount on the surface of the test specimen.

3.4 A similar material with known properties is recommended to be used as a reference and exposed simultaneously with the tested material.


3.5 Test results of different types of devices should not be compared unless the reproducibility of the tested material between these devices is determined.

4 Test device

4.1 Light source

4.1.1 The spectral range of quartz-jacked xenon arc lamps includes ultraviolet, visible light and infrared radiation at wavelengths greater than 270nm.

Foreword i
1 Scope
2 Normative references
3 Principle
4 Test device
5 Test conditions
6 Test specimens
7 Test procedures
8 Expression of results
9 Test report