Organic-inorganic double cross-linked rigid polymethacrylimide aerogel and preparation method and application thereof

CN122103673APending Publication Date: 2026-05-29CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-11-28
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing polymethacrylimide aerogels suffer from problems such as large pore size leading to weak adsorption capacity and insufficient mechanical properties.

Method used

A rigid polymethacrylimide aerogel with an organic-inorganic double cross-linked structure was prepared by forming a silicon-oxygen bond network structure between silicate sheets and combining it with an imide cross-linked structure. The preparation method includes free radical solution polymerization, reaction with tertiary amine, standing, supercritical carbon dioxide drying and heat treatment to form a nanoscale open-pore structure.

Benefits of technology

It significantly improves the mechanical properties, adsorption properties, and thermal and sound insulation properties of aerogels, especially compressive strength and thermal insulation properties, making it suitable for catalyst carriers and adsorption applications.

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Abstract

The present application relates to aerogel technical field, specifically to a kind of organic-inorganic double crosslinking structure hard poly-methyl-acrylimide aerogel and preparation method and application.The structure of the hard poly-methyl-acrylimide aerogel includes inorganic crosslinking structure and imide crosslinking structure;Inorganic crosslinking structure includes silicate sheet layer, and the network structure of siloxane bond connected and existing between the silicate sheet layer;In the network structure of siloxane bond, silicon atom and oxygen atom are alternately connected, and silicon atom is connected with carbon chain with-NH2 as end group;The hard poly-methyl-acrylimide aerogel has nanometer scale open-cell structure.This hard poly-methyl-acrylimide aerogel simultaneously exists imide crosslinking structure and specific inorganic crosslinking structure, and the inside of the aerogel has nanometer scale open-cell structure, can have excellent mechanical properties, adsorption performance and heat and sound insulation performance.
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