Effect of Needling Process Parameters on Mechanical Properties of Polytetrafluoroethylene Needle-Punched Filters
Polytetrafluoroethylene(PTFE)needle-punched filters have excellent high-temperature resistance and corrosion resistance,which are widely used in high-temperature particulate matter removal.However,the mechanical properties of PT-FE needle-punched filters are universally weak.In this work,we studied the effects of needling process parameters on the mechanical properties of the PTFE needle-punched filters and corresponding quadratic model were established.The result showed that the triangle needle had better performance than that of star needle in the needling process,and filters fabricated by the triangle needle had higher strength and lower strain when the puncture depth was 9 mm and puncture density was 540 strokes/cm2.The quadratic models had high degree of confidence intervals,which indicated that the models accurately described the quantitative relationship between the strength of PTFE needle-punched filters and the needling process parame-ters.When the puncture density and depth were 400 strokes/cm2 and 9.0 mm respectively,the mechanical properties of PT-FE needle-punched filters reached the requirements of Chinese National Standard and the processing energy consumption was reduced significantly.
Polytetrafluoroethylene Filter material Needling parameters Mechanical properties Quadratic model
ZHENG Yiming WU Haibo
College of Textiles,Donghua University,Shanghai 201620,China
国际会议
2021 Sino-Africa International Symposium on Textiles and Apparel (SAISTA2021)(2021中非纺织服装国际论坛)
线上
英文
197-202
2021-11-05（万方平台首次上网日期，不代表论文的发表时间）