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使用熒光紫外線(xiàn)設(shè)備對(duì)非金屬材料進(jìn)行曝露的測(cè)試方法

本測(cè)試方法是使用熒光紫外燈和冷凝裝置進(jìn)行曝露測(cè)試的基本原則和操作程序，旨在再現(xiàn)材料曝露在陽(yáng)光下(直接或透過(guò)窗玻璃)和曝露在濕氣中(雨水或露水)發(fā)生的老化效果。 這種做法限制于獲取測(cè)量和控制的條件和曝光程序的方法，不能指定*適合要測(cè)試的材料的曝光條件。

附:ASTM G154 -12英文版本(摘抄)

Significance and Use

5.1 The use of this apparatus is intended to induce property changes associated with the end use conditions, including the effects of the UV portion of sunlight, moisture, and heat. These exposures may include a means to introduce moisture to the test specimen. Exposures are not intended to simulate the deterioration caused by localized weather phenomena, such as atmospheric pollution, biological attack, and saltwater exposure. Alternatively, the exposure may simulate the effects of sunlight through window glass. Typically, these exposures would include moisture in the form of condensing humidity.

Note 2—Caution: Refer to Practice G151 for full cautionary guidance applicable to all laboratory weathering devices.

5.2 Variation in results may be expected when operatin