Preparation method of foam microporous material

Abstract

The invention provides a preparation method of a foam microporous material. The preparation method comprises the following steps: S1, adding 2-6 parts of a surfactant and 1-3 parts of a foam stabilizer into 5-10 parts of deionized water to prepare a homogeneous aqueous solution as a water phase; preparing 20-30 parts of a chemical monomer, 4-8 parts of an initiator and 40-60 parts of N-methyl pyrrolidone into a homogeneous oil solution as an oil phase; rapidly mixing the water phase and the oil phase, and then preparing a W/O type pre-emulsion by a homogeneous emulsification, stirring or ultrasonic process; S2, enabling the pre-emulsion to rapidly pass through the pore diameter of a microporous membrane under the pressure of 0.5-2 Mpa to obtain a W/O type emulsion with uniform particle size; and S3, curing the prepared W/O type emulsion, filtering, washing and drying to finally obtain the foam microporous material. According to the preparation method of the foam microporous material, the average particle size of the foam microporous material is controllable, and the foam structure is regular.

Description

technical field [0001] The invention relates to the technical field of microporous materials, in particular to a preparation method of foamed microporous materials. Background technique [0002] Foam microporous materials have the advantages of good mechanical strength, excellent chemical stability, acid and alkali resistance, and easy modification. They are a very good multifunctional product. In recent years, foam microporous materials have been widely used in many fields such as biomedicine, environment, catalysts, and functional materials, such as drug sustained and controlled release carriers, bioseparation microsphere media, and microsphere reagents for clinical testing. These high value-added applications require uniform and controllable particle size of microspheres, and good preparation repeatability, otherwise the application effect will be seriously affected. It is also difficult to control the structure of microspheres with the few preparation technologies of fo...

AI Technical Summary

Problems solved by technology

These high value-added applications require uniform and controllable particle size of microspheres, and good preparation repeatability, otherwise the application effect will be seriously affected

It is difficult to achieve the structure control of microspheres with the only few preparation technologies of foam microporous materials at present.

Therefore, there is an urgent need to develop foam microcellular materials with excellent performance and controllable particle size and structure, good batch repeatability and preparation technology, and the stability of existing foam microcellular materials is relatively poor, and the cells after drying Easy to collapse, low porosity, affecting its processing and application performance

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