紫外线降解

光催化降解乙烯比直接紫外线光降解效果显著，光照10min时光催化乙烯降解率比直接紫外线光降解提高23.76%；

Under 10 min illumination of UV light , the degradation rate of ethylene in TiO 2 photocatalytic treatment was increased by about 23.76 % , compared with that of the UV light without TiO 2 treatment ;

紫外线组降解率高于京尼平组。

Degradation rate of UV group was higher than that in GP group .

但也存在某些不足，如改性沥青加工过程中的温度老化、贮存稳定性及在紫外线作用下降解加速材料老化等问题。

However , some drawbacks exist , such as high temperature agi ng in process of modification , low storage stability and degradation acceleration under ultraviolet .

真空&紫外线对空间材料降解的研究进展

Progress on Study of Degradation of Space Materials upon VUV Irradiation

关于紫外线辐射使聚合物降解的原理，专家们是有分歧的。

The mechanism of polymer degradation by ultraviolet radiations is not agreed upon by experts .