Filter paper having function of oil-water separation, and simple preparation method and application of filter paper

• Main Authors: SHEN CHUNLI, PANG LAIXUE, YANG YUEQING, ZHANG SHUAI, XU YOUFU, DONG FUYING, TANG XINDE, ZHU WENJING
• Format: Patent
• Language: Chinese; English
• Published: 20.06.2017
• Subjects: CHEMISTRY; IMPREGNATING OR COATING OF PAPER; METALLURGY; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; SEPARATION; TEXTILES; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses filter paper having a function of oil-water separation, and a simple preparation method and application of the filter paper. The filter paper takes common experimental filter paper as substrate, and an organic/inorganic compound hydrophobic layer is loaded on the substrate, wherein the organic/inorganic compound hydrophobic layer is prepared from the following components: nano-silica, a silane coupling agent, a catalyst, ethanol and water, and the weight ratio of the nano-silica to the silane coupling agent to the catalyst to the ethanol to the water is equal to (2-5):(2-10):(2-10):(80-100):(5-20). The filter paper is prepared by adopting a dip-coating method; the preparation method of the filter paper comprises the steps of evenly dispersing the nano-silica, the silane coupling agent and the catalyst in mixed liquid of the ethanol and the water, dipping the filter paper into the dispersed liquid, taking out the dipped filter paper, and then naturally drying the filter paper in the air