纳米纤维膜对滤料性能影响的实验研究

采用静电纺丝的方法制备了“三明治”结构的纳米涤纶滤料，并对增加纳米膜前后的涤纶滤料进行动态性能测试.结果表明:在洁净过滤阶段初期，纳米涤纶滤料阻力增长较快，随着过程的推进，阻力增长逐渐缓慢，完成每个周期需要的时间大于涤纶滤料，纳米涤纶滤料粉尘剥离率为96.9%.老化阶段纳米涤纶滤料阻力增长了81.9Pa，涤纶滤料增长了112.3Pa.稳定过滤阶段纳米涤纶滤料阻力增长缓慢，完成周期时间长，粉尘剥离率为99.89%.纳米涤纶滤料的阻力性能明显优于涤纶滤料.

Experimental Study on the Influence of Nanofiber Membrane on the Performance of Filter Media

The nano-polyester filter with “sandwich” structure was prepared by electrospinning method. The dynamic performance of the polyester filter with or without the nanofiber membrane was tested. The results indicate that at the beginning of fresh filter stage， the resistance of nano-polyester filter increase rapidly. As the process progresses， the resistance grows slowly and the time required to complete each cycle is longer than polyester filter， the dust stripping rate of nano-polyester filter is 96.9%. At the aged stage， nano-polyester filter resistance increases by 81.9Pa and polyester filter increases by 112.3Pa. At the stabilized stage， the dust stripping rate of nano-polyester is 99.89% with the resistance growth slowly and long-time filtration cycle. The performance of nano-polyester filter is obviously better than that of polyester filter.