玄武岩/聚苯硫醚纤维复合滤料PTFE乳液浸渍工艺研究

Research on the PTFE Emulsion Impregnation Technology of Basalt/PPS Fiber Composite Filter Material

采用PTFE乳液对玄武岩/聚苯硫醚针刺复合滤料进行浸渍后整理,通过正交试验设计,分析了乳液浓度、浸渍时间、焙烘温度和焙烘时间等工艺参数对过滤效率的影响,以获得最佳性能的复合滤料。结果表明:各因素对复合滤料过滤效率影响排序为乳液浓度>浸渍时间>焙烘温度>焙烘时间;乳液浸渍后复合滤料的平均孔径由33.1μm降低到27.3μm,过滤效率由89.9%提高到97.2%,过滤性能有了明显的提高。

The Basalt/PPS composite filter materials are finished by PTFE emulsion .The effects of four different technological parameters in PT FE emulsion finishing process on filtering efficiency of basalt /PPS composite filters are studied through orthogonal experiment ,involving emulsion concentration ,im-pregnation time ,curing temperature and time .The compound filter materials with the best impregnation technological conditions are gained .The results show that ：the influence of technological parameters on the filtration performance is listed in descending order as follow s ：emulsion concentration＆gt;impregnation time＆gt;curing temperature＆gt;curing time ;the mean pore size of the compound filter material after impregna-tion decreased from 33 .1 μm to 27 .3 μm and the filtration efficiency significantly improved from 89 .9% to 97 .2% .