光伏背板不同老化试验方法比较

Study on Comparison of Different Ageing Testing Methods of Backsheets

主要选用3款不同厂家、不同型号的背板(A、B、C),分别进行单一加速老化试验以及不同组合的序列老化试验,比较、分析不同老化试验后背板材料的老化情况。通过对不同老化试验后背板的黄变指数测试,发现背板经单一加速老化试验后外观黄变情况无较大差异;而经序列老化试验后,外观出现不同程度的黄变,体现出不同背板的耐老化性能差异。

Three different types of backsheets were choosen to put to single-factor accelerated aging tests and multi-factor accelerated aging tests in a different sequence respectively, in which the different backsheets were de- fined as A, B and C. By contrast and study on the results, the yellowing index of different backsheets showed little difference after single-factor accelerated aging tests. However after multi-factor accelerated aging tests in a differ- ent sequence, the different backsheets had a yellowing index with varying degrees, that meant a different ageing re- sistance.