Nanoscale double-cylindrical-bore filter membrane

Abstract

The invention provides a nanoscale double-cylindrical-bore filter membrane. According to the invention, two sides of a layer of a solid material are provided with two cylindrical bores which are in communication; the cylindrical bore with a small bore diameter is a filtration bore with a length of L0, a diameter of 2R0 and a radius of R0; the value of the L0 is determined according to the requirement for strength of the filtration bore; the radius R0 is determined according to the requirements of filtration and is at a nanometer scale; the cylindrical bore with a large bore diameter is a dragreduction bore with a length of L1 and a radius of R1; the value of the L1 is determined according to the requirement for mechanical strength of a filter membrane; R1 is no less than R0; the radius R1is determined according to the requirement for the maximum penetration capacity of the filter membrane; the cylindrical bores are uniformly distributed on the surface of the solid material; and the layer of the solid material is the filter membrane. The filter membrane provided by the invention can realize ultrafine filtration, has excellent penetration capacity, and can meet the requirement formechanical strength during filtration at the same time.

Description

technical field [0001] The invention relates to a nano-scale double cylindrical hole filter membrane. Background technique [0002] Membrane for filtration, referred to as filter membrane, has important applications in industry and daily life. It can be used to filter out solid particles and impurities, purify liquids, and also to filter out bacteria and macromolecules, or to realize the separation of two liquids. separate. In daily life, filter membranes can be used to purify drinking water and various beverages, and can also be used to filter out impurities and various ions in seawater to achieve seawater purification. The existing commonly used filtering methods and means are: [0003] 1. Activated carbon filtration [0004] Activated carbon is an industrial adsorbent with a wide range of uses. It uses charcoal, various fruit shells and high-quality coal as raw materials, and crushes, sieves, activates catalysts, rinses, dries and screens raw materials through physical...

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a nano-scale double-cylindrical pore filter membrane to solve the problems in the prior art that the filter pore diameter is too large to be used for filtering very small substances, or the filter pore diameter is too small, the permeability is poor, and the filtration efficiency Relatively low, and the mechanical strength of the filter membrane caused by too thin filter membrane is often challenged, not resistant to high pressure, high temperature and other problems

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