塑料塔填料液相化学法表面改性的研究

A Study on Surface Modification of Plastic Packing

采用液相化学法对塑料塔填料进行表面改性，并对改性后的填料作性能测试。结果表明，改性后的填料表面粗糙度增大并引入了含氧极性基团，表面水接触角从８８°降低至４５°，临界表面张力由２８×１０－３Ｎ／ｍ提高到５５×１０－３Ｎ／ｍ，气相总传质单元数平均增加２４％，传质性能大为改善。

The liquid chemistry method is applied to modificate the surface of plastic packing and the properties of the modificated packing are tested. The results show that in the modificated packing the surface coarse degree was increased,some oxygen polar group were demonstrated,the water contact angle was decreased from 88° to 45°, the critical surface tension was raised from 28×10 -3 N/m to 55×10 -3 N/m and gas total transfer unit number was increased about 24 percent on the average.