Production method and product of structured flexible conductive porous material

Abstract

The invention discloses a preparation method of a structured flexible conductive porous material. The preparation method comprises the following steps: designing a structured mold according to the real requirement; successively adding filling particles and polydimethylsiloxane prepolymer into the mold, and preparing a flexible porous material with a structured appearance; and rapidly and sufficiently filling the structured flexible porous material with a conductive material to obtain the structured flexible conductive porous material. The invention also discloses a structured flexible conductive porous material prepared by using the method. The preparation method integrates the technologies such as structured molding, grading and screening of the filling particles, surface trace fusion curing and negative-pressure permeation promotion of the filling particles and the like, so that the prepared flexible conductive porous material has the structured appearance, a porosity of the flexible porous material is controllable, the pore interconnection rate is relatively high, the filling particle is sufficient to leach, and the overall preparation speed is increased by two to three times compared with the traditional method.

Description

technical field [0001] The invention belongs to the field of conductive porous materials, and more specifically relates to a method for preparing a structured flexible conductive porous material and a flexible conductive porous material prepared by applying the method. Background technique [0002] Structured flexible porous materials and structured flexible conductive porous materials have a very wide range of applications in scientific research and practical life. For example, cell culture and biological tissue engineering in medical research need to be attached to a flexible porous material with good biocompatibility, controllable pore size, and high interconnection rate; A flexible porous material with high oil adsorption capacity (that is, high interconnection rate), superhydrophobicity and superlipophilicity, environmental protection, and recyclable reuse; flexible conductive porous materials made of flexible porous materials as carriers can be used as pressure Resist...

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Problems solved by technology

[0006] In this set of methods, firstly, the author uses cube sugar as the reverse structure of the porous material. The shape of the prepared porous material is the same as the cube sugar, and it cannot flexibly prepare various structured shapes according to different needs.

[0007] Secondly, the porous material prepared by using cube sugar as the reverse structure of the porous material has the disadvantage that the pore size depends on the particle size of the sugar, and the pore size is uncontrollable.

There are other literatures that use graded and screened sodium chloride particles as filler particles. After fully mixing polydimethylsiloxane and sodium chloride particles, polydimethylsiloxane is cured, and then chlorine is leached out. Sodium chloride particles are used to prepare flexible porous materials. Although this method can control the pore size of the porous material by grading and screening the size of the filled particles, due to the separation of the filled particles, when the particles are leached, the partial filling Particles are completely encapsulated in polydimethylsiloxane, resulting in slow and incomplete leaching of filled particles, poor interconnection rate of pores inside porous materials, etc.

[0008] Furthermore, the author uses capillary action to make the polydimethylsiloxane prepolymer fill the voids in the sugar cube. This process is relatively slow, and it is not easy to judge when the polydimethylsiloxane prepolymer fills the voids.

Moreover, after the polydimethylsiloxane is cured, the excess polydimethylsiloxane will be trimmed, wasting part of the material

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