不同质量比聚苯硫醚/聚四氟乙烯复合滤料的过滤性能

Filtration performance of polyphenylene sulfide/polytetrafluoroethylene composite filters with different mass ratios

聚苯硫醚/聚四氟乙烯(PPS/PTFE)复合滤料是目前燃煤电厂电袋/袋式除尘器广泛应用的耐高温滤料之一。制备4种不同PPS与PTFE纤维质量比的PPS/PTFE复合滤料,并对其基本物理性能表面形貌、力学性能、缠结系数及过滤性能进行测试分析。研究结果表明,随着PTFE纤维质量分数的增大,PPS/PTFE复合滤料的厚度、透气性及横向断裂强力呈下降趋势,而横向断裂伸长率则呈上升趋势。相对于PPS滤料,PPS/PTFE复合滤料的过滤性能有所提升,对微细粉尘的捕集效率明显提高。研究结果为燃煤电厂微细粉尘的超低排放提供依据和参考。

Polyphenylene sulfide/polytetrafluoroethylene(PPS/PTFE)composite filter is one of the high temperature resistant filters that widely used in electrostatic-fabric integrated precipitator/bag dust collector in coal-fired power plants.Four kinds of PPS/PTFE composite filters with different mass ratios of PPS to PTFE fibers were prepared,and their basic physical properties,surface morphology,mechanical properties,entangling coefficient and filtration performance were tested and analyzed.The results showed that with the increase of PTFE mass fraction,the thickness,permeability and cross direction breaking strength of PPS/PTFE composite filters decreased,while the cross direction breaking elongation increased.Compared with PPS filters,the filtration performance of PPS/PTFE composite filters was improved,and the capture efficiency to fine dust was significantly improved.The research results can provide basis and reference for ultra-low fine dust emission in coal-fired power plants.