Pore forming substance for reticular porous material and preparation method thereof

Abstract

The invention discloses a pore forming substance for a reticular porous material and a preparation method thereof. The molecular structural formula of the pore forming substance is as shown in the description, wherein R1, R2, R3 and R4 are polyoxyethylene ether or hydrophobic groups linked to a parent, and the polyoxyethylene ether and hydrophobic groups must be present in every pore forming substance molecule at the same time. By taking sorbitan as a parent structure, the pore forming substance of the reticular porous material is prepared by introducing the hydrophobic groups and polyoxyethylene ether on hydroxyl through reactions. The selecting range of reaction raw materials is expanded by virtue of the method, and meanwhile, various functional groups can be introduced, so that the specificity of the pore forming substance is increased; the pore forming mode is a micelle occupying method. In a process of removing micelle in the pore forming substance, the pore forming substance only needs to be simply soaked in pure water, so that the requirements on energy conservation and environmental protection are satisfied.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to the preparation and application of a novel pore-forming agent, in particular to a pore-forming agent for mesh porous materials and a preparation method thereof. Background technique [0002] Due to the rich pore structure and large specific surface area on the surface of porous materials, porous materials are often used as adsorption materials, such as common poisonous gas filter devices; at the same time, porous materials after carbonization have high chemical stability and can be used for making Carriers of chemical catalysts; because carbon materials are conductive, and the charge and discharge times have little effect on service life, carbonized porous materials are often used as excellent electrode materials, especially for emerging supercapacitors, porous carbon electrodes are more It has the advantages of low price and long life. [0003] The current pore-forming technolo...

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Problems solved by technology

Therefore, the porous materials prepared by the soft template method are mostly difficult to control with a pore size distribution between 1nm and 1μm, and the micelles are easy to agglomerate to form larger pores, making it difficult to obtain a network porous structure.

At the same time, more polyether block polymers are currently used in the soft template method, and the price of raw materials is relatively high, requiring hundreds of yuan per kilogram, which can only be borne by laboratories or high-return industries.

In terms of technology, when removing the soft template, the commonly used methods are high-temperature calcination, or extraction with strong acid and strong alkali. These methods will not only cause certain damage to the structure of the porous material, but also pose certain dangers to the technicians involved in the operation. sex

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