聚丙烯加热改性制备大孔吸附树脂的工艺及其应用

This article reported the preparation of macro porous resin by heating polyproplyene and improving its property. The result showed that macro porous resin with good quality and big soil adsorption rote can be prepared when the ration of polypmplyene to soybean salad oil is 1 : 2, the highest heating temperture is 250℃, time of homothermal agitation is 20min and the rote of cooling is 2℃/min.The resin can effectively adsorb waste grease in restaurant wastewater. After removing grease, wastewater is treated with cogulant deposition. CODcr descend to 83mg/l from 790mg/l, which can reach the national discharge standards.     

Pd-Ag/PTFE复合膜的制备及表征

本文以不同孔径的聚四氟乙烯（PTFE）为基膜，采用化学镀法分别将Ag、Pd沉积到PIFE膜孔及膜面上，制得了镀层均匀、结合力较好的Pd-Ag／PTEE复合膜，并考察了PTFE基膜孔径对镀层结合力的影响，以及化学镀工艺对金属钯沉积速率、复合膜孔结构和截面电阻率的影响。结果表明，适当的基膜孔结构有利于提高镀层结合力；PTFE膜经化学镀修饰后，孔径减小，孔径分布变窄，孔隙率降低，膜截面电阻率降低10^6数量级，且孔径减小顺序与截面电阻率减小顺序一致。