论文部分内容阅读
采用表面改性的方法对聚四氟乙烯纤维(PTFE)滤料进行亲水疏油改性,分别利用傅里叶红外光谱仪和全自动视频微观接触角测量仪对PTFE表面官能团和纤维亲水性进行测试。研究了改性及未改性PTFE纤维对油污的吸/脱附性能,结果表明油污浓度、时间、温度、pH值对吸/脱附性能有显著的影响。改性及未改性PTFE纤维的吸附量最大的吸附条件是:40℃、pH=3、油浓度为100mg/L时,最大吸附量分别为65.00、89.18mg/g。
The surface modification of polytetrafluoroethylene (PTFE) fiber was used to modify the hydrophilic and oleophobic materials. The surface functional groups and the hydrophilicity of the fibers were characterized by Fourier transform infrared spectroscopy and automatic video microscopic contact angle measurement. carry out testing. The adsorption / desorption properties of modified and unmodified PTFE fibers on oil were studied. The results showed that oil concentration, time, temperature and pH had a significant effect on the adsorption / desorption properties. The maximum adsorption capacity of modified and unmodified PTFE fibers was as follows: 40 ℃, pH = 3, the maximum adsorption amount was 65.00 and 89.18 mg / g respectively when the oil concentration was 100 mg / L.