Aerogel plastic film and preparation method thereof

Abstract

The invention relates to a method for preparing an aerogel plastic film. The method comprises the following steps: S1, preparing aerogel powder slurry, namely sufficiently mixing aerogel powder, an interfacial agent, a functional additive and a solvent to obtain the aerogel powder slurry; S2, preparing a mixture, namely uniformly mixing the aerogel powder slurry and a resin material into mixing equipment to obtain the mixture; and S3, molding the film, namely preparing the film from the mixture by a molding process, which is the aerogel plastic film. The aerogel plastic film has the beneficial effects that, different from conventional in-situ compounding, a step for gelling a reinforcing material with aerogel precursor does not exist, the process is simple without a great number of chemical equipment or site limitation, can conveniently realize large-scale production. The method can be used for preparing the aerogel plastic film, which is a novel product mode to meet the requirement of the prior art for ultrathin aerogel materials.

Description

technical field [0001] The invention belongs to the field of gel materials, and in particular relates to an airgel plastic film and a preparation method thereof. Background technique [0002] Airgel is a low-density material with a nano-porous structure. Due to its extremely low density and light weight, airgel is usually called solid smoke; at the same time, more than 95% of airgel is air, so It also has a very good thermal insulation effect. For example, the electrical conductivity of silicon aerogel can be as low as 0.013W / (m·k) at room temperature. Therefore, aerogel is considered to be a thermal insulation material with outstanding performance. However, the strength of pure airgel is poor, and it is difficult to act as a bulk material for thermal insulation engineering or other fields. The usual way to solve the above problems is to combine airgel with fiber reinforced materials to form composite materials to enhance the strength of airgel materials and meet the requir...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the process is complex, and special equipment such as reactors and supercritical reactors are required to complete a series of reactions from airgel precursors to aerogels, requiring a large enough production space, technology and capital requirements High barriers to entry and difficulty in large-scale production

Due to the complexity of the gelation process, there are many shortcomings in the in-situ composite between airgel and other reinforcing materials. It is necessary to develop a new preparation method for airgel composites.

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