紫外试验箱模拟雨水和露水对产品的影响
在户外的材料与湿气接触的时间，每天可以长达12小时，研究结果表明造成这种户外潮湿的主要原因是露水，而不是雨水。紫外老化试验箱通过一系列*的冷凝原理来模拟户外的湿气影响。在设备的冷凝循环圈中，在箱体的底部有一蓄水箱，并对其进行加热来产生水汽。热蒸汽使试验箱内的相对湿度维持在100％，并且保持一个相对高温。产品的设计确保测试试件实际上构成试验箱的侧壁，从而试件的背面则暴露在室内环境空气中。室内空气的冷却效用导致试件表面温度下降到低于蒸汽温度几度的水平。这一温差的出现导致试件在整个冷凝循环过程中，其表面始终有冷凝生成的液态水。这种冷凝产物是很稳定的纯净蒸馏水。这种纯净水提高了试验的再现率，而同时避免了水渍问题。
in the outdoor materials contact with moisture time, every day can be as long as 12 hours, results show that the main reason causing the outdoor wet dew, instead of the storm. ultraviolet aging test chamber through a series of unique condensation principle to simulate moisture affects outdoor. in the condensation cycle equipment, in the box at the bottom of a water storage tank, and the water vapor heating to produce. hot steam to relative humidity test chamber was maintained at , and maintain a relatively high temperature. product design to ensure that the test specimen in fact constituted test box side wall, thereby specimen back exposure to indoor air pollutants. the utility of the indoor air cooling that lead to the drop surface temperature below the steam temperature a few degrees level. this difference leads to sample in the whole condensation cycle process, the condensation generated liquid water has its surface. the condensation products are pure distilled water is stable. the purified water to improve test reproducibility, while avoiding the water stain problem.
由于户外曝晒接触潮湿的时间每天可以长达12小时，因此紫外老化试验箱的潮湿周期一般持续几小时。我们建议每一冷凝周期至少持续4小时。注意到设备中的uv曝晒和冷凝曝晒是分别进行的，与实际气候条件是一致的。
the outdoor exposure exposure to humid day can be up to 12 hours, so the ultraviolet aging test chamber drying period usually lasts a few hours. we recommend that every condensation cycle for at least 4 hours. note that uv exposure and condensation exposure devices are respectively, are consistent with the actual weather conditions.
对于某些应用过程而言，水喷淋能更好的模拟终使用的环境条件。水喷淋在模拟由于温度剧变和由于雨水冲刷所造成的机械侵蚀是极其有用的。屋面、汽车材料和在金属建筑或结构上使用的涂料经常会遭遇到突然的温度剧变。例如在炎热的夏季中，当热量堆积后突然由于暴雨而消散。这种温度剧变的后果对于许多材料而言是一种挑战。紫外老化试验箱/喷淋型就是为再现这种条件而专门设计的。
for some applications, simulation of water spray can better end use conditions. the water spray in the simulation because of the temperature change and the rain erosion due to mechanical erosion caused by is extremely useful. roof, auto materials and coatings used in metal building or structure will often encounter abrupt temperature. for example, in the hot summer, when the heat accumulation and dissipation due to heavy rain suddenly. the temperature change is the consequence of a challenge for many materials. uv accelerated weathering tester / spray type is designed to reproduce the conditions.
由于经常遭到来自雨水的冲刷，木材的涂料层，包括油漆和着色剂，会出现相应的侵蚀现象。近期研究结构表明，这种雨水冲刷动作可以将材料表面有防降解作用的涂料层冲刷掉，从而将材料本身直接曝晒在uv和水分的破坏性影响之下。紫外老化试验箱这一过程可以重复多次，从而导致一种材料退化现象，而单靠冷凝方式是无法再现的
because often suffer from rain, the coating layer including wood, paint and stain, there will be corresponding erosion phenomenon. the recent research shows that structure, the rain wash action can be the material surface with anti degradation of the coating layer is washed away, so that the material itself directly exposed to the damaging effects of uv and water. this process can be repeated several times, resulting in a material degradation, the condensation is unable to reproduce