To study the effect of high-temperature flue gas on the performance of filter bags,acid-base interaction aging tests were conducted on polyester filter media at three different temperatures (45,75 and 130 ℃). The results revealed that polyester filter media exhibited poor resistance to hydrolysis in high temperature acid-base coupled environments,and when subjected to alkali followed by acid corrosion,the filter media experienced significant degradation. The tensile breaking strength and surface peeling strength of the filter media decreased from 1638.8 and 143.1 to 1100.8 and 19.1 N,respectively,after interactive aging in alkaline and acidic environments at 130 ℃,FT-IR showed that the C—O absorption peak was weakened,indicating that the macromolecular chain of polyethylene terephthalate was broken during hydrolysis,which was the main reason for the occurrence of hydrolysis and performance degradation.
关键词
涤纶针刺毡/钢铁行业废气/高温酸碱交互/机械性能/表面形貌/化学结构
Key words
polyester needle felt/iron and steel industry waste gas/high temperature acid-base interaction/mechanical properties/surface morphology/chemical structure
维普
万方数据