光伏玻璃表面微织构柱体抗颗粒冲击性能研究

The particle impact resistance of surface micro-textured cylinders on photovoltaic glass

为分析光伏电池玻璃表面微织构形状和颗粒碰撞方式对表面微织构损伤的影响,建立模拟月尘颗粒碰撞表面微织构仿真模型,结合实验验证,探究表面微织构损伤情况。结果表明:30μm直径的模拟月尘颗粒以5 m/s的速度撞击表面微织构时,损伤形式主要包括边缘破损、劈裂破损和断裂,损伤面积与表面微织构整体相比较小,损伤深度在0.06~0.29μm之间,仅为表面微织构柱体高度的1%~4.8%;中心正碰时,四棱台表面微织构的抗冲击性最好,圆台表面微织构次之,六棱台表面微织构最差;颗粒以4种碰撞方式撞击圆台表面微织构时,损伤程度从大到小依次为边缘碰撞、45°边缘碰撞、中心正碰、45°中心碰撞。研究结果可为玻璃表面微织构的工艺改性提供参考。

To investigate the effects of the micro-textures and the impact mode of the particles on the damage of the surface micro-textures of the photovoltaic glass,a simulation model is established,with experimental verification,for categorized analyses.It is shown that the damage form of the surface micro-textures caused by the particle impact is mainly of the edge damage,the split damage and the fracture for the lunar dust simulant of 30μm diameter impacting the surface micro-textures.The damage area is smaller than the overall area of the surface micro-textures,and the damage depth ranges from 0.06μm to 0.29μm,1%to 4.8%of the height of the surface micro-texture.For the normal frontal collision,the quadrangular frustum pyramid shape enjoys the best durability,followed by the cone-shape,and the hexagonal frustum pyramid.For the four collision modes,the degree of damage to the surface micro-textures for edge collision,the 45°edge collision,the normal collision,and the 45°center collision is in a descending order.The results can provide some reference for the process modification of surface micro-textures on the glass.