F-SiO2 nanoparticle and PDMS modified PET mesh fabric

Abstract

The invention discloses a F-SiO2 nanoparticle and PDMS modified PET mesh fabric. A preparation method of the mesh fabric includes the specific steps of (1) adding SiO2 nanoparticles into a mixed solution containing ammonia water and deionized water to ultrasonically prepare a SiO2 suspension A, adding perfluorodecyttiethoxysilane (PFDTES) into ethanol to obtain a fluorosilane mixed solution B, anddropwise adding the suspension A into the fluorosilane mixed solution B to prepare F-SiO2; (2) weighing PDMS and a curing agent in a mass ratio of 10:1, adding tetrahydrofuran (THF) separately, performing magnetic stirring for 5 minutes, and performing ultrasonic treatment to obtain a solution a and a solution b; mixing the solution a with the solution b to obtain a PDMS solution; then, putting aPET mesh fabric into the PDMS solution for ultrasonic treatment, and performing pre-curing for 5-15 minutes at 70-90 DEG C to obtain a PDMS@PET mesh fabric; (3) adding F-SiO2 into THF, performing ultrasonic treatment, immersing the hydrophobic PDMS@PET mesh fabric in a F-SiO2 THF solution for 10-20 minutes two times, performing drying for 5 minutes at 70-90 DEG C between the two times of immersing, and performing drying for 1 hour at 70-90 DEG C finally.

Description

technical field [0001] The present invention relates to a kind of F-SiO 2 Preparation method of nanoparticle and PDMS modified PET mesh fabric. Background technique [0002] The rapid development of industry has greatly promoted the progress of society, but at the same time, oily wastewater has also brought unprecedented pressure to the ecological environment such as the ocean. How to effectively solve this problem is a great challenge, but researchers still need to make further efforts to develop advanced techniques. Among them, membrane technology, as a green and economical effective strategy for separating oil / water mixtures, has made great progress in continuous academic research and industrial development. For example, polymer films can achieve hydrophobic and antifouling properties by mixing with hydrophobic additives or changing their surface properties through chemical or physical modification. At present, there are various methods for the preparation of oil-water...

AI Technical Summary

Problems solved by technology

These hydrophobic / oleophilic membranes have been widely used in practical applications due to their low cost and good availability, but there are still problems such as poor separation selectivity and low separation efficiency.

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