后处理工艺对聚苯硫醚滤料清灰性能的影响

为研究滤料清灰性能的不同影响因素，选取４种聚苯硫醚（PPS）纤维滤料，即未经后处理、烧毛、聚四氟乙烯（PTFE）乳液浸渍和PTFE 微孔膜覆膜处理的滤料为试样，采用滤料动态过滤性能测试仪测试了４种聚苯硫醚纤维滤料的清灰性能，通过扫描电镜观察了过滤前后滤料的表观形貌。测试结果表明：在试验周期内，这４种滤料中，覆膜滤料经粉尘过滤后剩余压差最低，清灰周期最长，清灰性能最为优异；未经处理滤料清灰性能次之；PTFE乳液浸渍滤料由于表面纤维间充满着PTFE 乳液固状物，其清灰性能较差；烧毛处理滤料表面留有面积较大的PPS 纤维烧焦物质，其清灰性能最差。

Influence of post-treatment process on dust cleaning performance of polyphenylene sulfide filters

To research the influence of treatment on the dust cleaning performance of filters,polyphenylene sulfide (PPS) filters which are nottreated, songed, dipped with polytetrafluoroethy-lene (PTEF) emulsion and laminated with PTEF micro-porous film, respectively, were chosen as the experimental samples. Their filtering effects with different surface morphologies were studied by the dynamic filter performance tester, the surface morphologies of filters before and after filtration were observed by the scanningelectron micrsscope. The results showed that laminated filter suffered from a long time filtration and cleaning, and it remained the lowest residual pressure and the longest cleaning cycle time, and had the nost outstanding dust-cleaning performance. The performance of non-treated PPS filter was the second. The filter surface dipped with PTFE emulsion solid substance bas poor performance. The singed filter surface was covered with large area of code-like substance, and its performance was the worst.