The photo-oxidation ageing process of polypropylene filaments was studied by artificial accelerated ageingtest using different intensities of UV irradiation.
以聚丙烯长丝为对象，采用不同紫外线辐射强度的人工加速老化试验对其光氧老化过程进行研究。
2
The effect of environment factors on the ageing of polymer materials, the ways of artificial aging test and the ways of protection against ageing are introduced.
本文分析了各种环境因素对高分子材料的影响，介绍了常用的几种加速老化试验的方法及老化材料防护措施。
3
The ageing process and regularity of the asphalt coating have been studied with indoor artificial accelerated ageingtest.