Device and industrial method for continuously producing aerogel felts

Abstract

The invention discloses a device and industrial method for continuously producing aerogel felts, and relates to the technical field of aerogel production equipment. The device for continuously producing the aerogel felts comprises a first lifting platform, a double-station unwinding device, a fiber felt feeding device, a metal detection device, an impregnation device, a microwave curing device, ahydrophobic modification device, a hole structure protection device, a solvent cleaning device, a drying device, a winding device and a packaging device which are sequentially arranged from front to back. According to the device and industrial method for continuously producing the aerogel felts, the requirements of the equipment safety aspect, the solvent effective utilization aspect and the environmental protection aspect are simultaneously considered, and the continuous production of unwinding, forming, modification, winding and packaging is realized; and by means of the device, the raw materials can be directly produced into the aerogel felt products, and the packaging process can be completed.

Description

technical field [0001] The invention relates to the technical field of airgel production equipment, in particular to equipment and an industrialized method for continuous production of airgel blankets. Background technique [0002] In the past airgel felt production process, the production of airgel felt was often produced intermittently, with long production cycle, high labor cost, low production efficiency of a single production line, and the production workshop faced the risk of leakage of a large amount of organic solvents, increasing hidden dangers in production safety, and the product quality is not stable. [0003] At this stage, the common way to produce airgel at home and abroad is one-step acid or alkali method or two-step method of acid first and then alkali. The organic silicon source and inorganic silicon source are used to prepare the sol solution and then re-cured with the fiber mat. The curing methods of wet gel felt include direct immersion curing in soakin...

AI Technical Summary

Problems solved by technology

Among them, the supercritical drying effect is the best, but the supercritical drying airgel mat cannot achieve continuous production, and the investment cost of equipment is high.

High-temperature supercritical drying is more dangerous. The heating method adopts heat transfer oil or direct electric heating. The heat transfer efficiency of heat transfer oil is low. Direct electric heating has high requirements on the performance of the drying kettle. Due to the high temperature supercritical, the sealing requirements of the drying kettle are very high. At this stage It is still rarely used; freeze-drying, because the freezing process consumes a lot of energy, and the volume change in the solvent phase change process will cause certain damage to the gel void structure, the investment cost is large, and it is basically not used in industry at present.

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