Regenerative activated carbon plate capable of absorbing harmful gas and preparation method thereof

Abstract

The invention discloses a regenerative activated carbon plate capable of absorbing harmful gas and a preparation method thereof. The method comprises the following steps that (1) titanium dioxide loaded activated carbon is prepared; (2) the wetted titanium dioxide loaded activated carbon is added in adhesives for full and uniform mixing to obtain mixed glue to be coated; and (3) the mixed glue tobe coated is adopted to coat the two surfaces of a substrate; and then, a wood veneer is bonded for cold-press molding, hot-press curing and display maintenance to obtain the regenerative activated carbon plate capable of absorbing the harmful gas. Nanometer titanium dioxide is loaded on the surfaces of the activated carbon; and after the activated carbon absorbs the harmful gas, the titanium dioxide can decompose the harmful gas under a photocatalysis effect to release an absorption site of the activated carbon, so that the regenerative absorption of the activated carbon is realized, the service life of the activated carbon is greatly prolonged, and the absorption efficiency of the activated carbon is improved. The titanium dioxide loaded activated carbon is fully wetted before use to guarantee exertion of the absorbing function.

Description

technical field [0001] The invention belongs to the technical field of activated carbon sheet manufacturing, and in particular relates to an activated carbon sheet capable of regeneratively adsorbing harmful gases and a preparation method thereof. Background technique [0002] Adhesive is one of the main raw materials needed in the production process of wood-based panels, but more than 90% of the adhesives used in the market are urea-formaldehyde resins made of formaldehyde. Urea-formaldehyde resin will continuously release free formaldehyde in the process of production and use, which will pollute the furniture environment of consumers and cause lasting damage to the human body. In addition, organic volatile gases such as benzene, toluene, and xylene released from the board will also affect human health. [0003] Activated carbon is a porous carbon material that has the functions of adsorbing formaldehyde and organic volatile harmful gases. In the wood-based panel glue dis...

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Problems solved by technology

[0004] The disadvantage of the above wood-based panel glue is that activated carbon itself has a limited amount of adsorption to formaldehyde, organic volatile harmful gases and other substances, and cannot purify the home environment for a long time; and if activated carbon is directly added to the adhesive, The adhesive will occupy and block the surface pores of activated carbon, which not only affects the adsorption efficiency of activated carbon, but also affects the bonding strength of the adhesive to a certain extent.

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