为什么我的家具在阳光下会褪色?

Faded furniture and carpets, over time we all notice it. We all have our favourite seat on the sofa and walk the same route across the living room to the kitchen leading to general wear and tear. Then we have the back of the sofa and the patch of carpet that we never walk across but both fade anyway. Chances are they are exposed to direct sunlight?

随着时间的推移，聚丙烯、尼龙和聚酯(地毯中最常见的)等聚合物以及地毯和家具制造过程中使用的颜料和染料将发生光氧化老化(UV降解)。除了发生变色的可能性外，有害的挥发性有机化合物也会缓慢释放到家中。

This represents an analytical challenge to manufacturers of the materials utilised in production of such products. During the R&D stage, materials likely undergo accelerated UV weathering testing in a Xenon Arc Machine. This helps to determine how a material will perform over time, it is however a lengthy test taking weeks or even months plus provides little chemical information as to why a product may fail.

Using the CDS PhotoPROBE with UV testing capabilities fromAnalytixit is possible to expose a material to a combination of heat, humidity and high intensity UV light. During the exposure we automatically collect the VOCs evolved and desorb to GCMS for analysis. This provides R&D chemists a level of information not previously obtainable and allows them to look at the chemistry as to why a particular material may not perform well under UV exposure. Better still, the whole analysis takes less than one hour to complete.

所以，下次你打开窗帘，让阳光洒进来的时候，你有没有想过你呼吸的空气中有什么?

More informationonline