光伏用PET薄膜力学性能测试结果的影响因素

Influencing factors of mechanical properties test results of PET films for photovoltaic applications

本论文主要讨论了影响光伏用PET薄膜断裂拉伸强度与断裂伸长率测试结果的因素。分别从制样宽度、夹持长度与拉伸速度三个方面进行分析,其中制样宽度对拉伸强度与断裂伸长率均没有明显影响;夹持长度与断裂伸长率有较明显影响,夹持长度越大测试断裂伸长率越小;拉伸速度对拉伸强度和伸长率均有一定影响,拉伸强度与断裂伸长率均随着拉伸速度的增大而减小。

In this paper, the factors affecting the test results of breaking tensile strength and elongation of PET films for photovoltaic applications are discussed. The width of sample preparation, clamping length and drawing speed are analyzed respectively. The width of sample preparation has no obvious influence on the tensile strength and elongation at break. The clamp length and elongation at break have obvious influence. The larger the clamp length is, the smaller the elongation at break is. The tensile speed has influence on the tensile strength and elongation. The elongation at break decreases with the increase of the clamping length.