Additive of urea-formaldehyde resin adhesive for artificial board and preparation method of adhesive

Abstract

Provided are an additive of a urea-formaldehyde resin adhesive for an artificial board and a preparation method of the adhesive. The additive is prepared from, by weight, 50-70 parts of sepiolite powder, 100 parts of carboxymethyl sweet potato residues, 20-40 parts of cassava residues, corncob residues and 5-20 parts of oat waste; the raw materials are mixed to be uniform according to the above-mentioned proportions, and a urea-formaldehyde resin additive is obtained; the urea-formaldehyde resin additive and urea-formaldehyde resin are mixed to be uniform according to the weight part ratio of (20-30):100, and the urea-formaldehyde resin adhesive is obtained. According to the additive of the urea-formaldehyde resin adhesive for the artificial board and the preparation method of the adhesive, the preparation method is simple, the additive and the urea-formaldehyde resin adhesive have good miscibility, a good prepressing property can be given to the urea-formaldehyde resin, and the production efficiency of plywood and blockboard is guaranteed; the additive can react with formaldehyde produced in artificial board production, and formaldehyde emission of the artificial board is reduced.

Description

technical field [0001] The invention relates to an additive for an adhesive and an adhesive containing the additive, in particular to an additive for a urea-formaldehyde resin adhesive for a wood-based panel and a preparation method for the urea-formaldehyde resin adhesive. Background technique [0002] In recent years, my country's wood-based panel production has been ranking first in the world. In 2012, my country's wood-based panel output was 286 million m3, a year-on-year increase of 19.7%. Among them: Particleboard 12.89 million m 3 , a year-on-year increase of 7.2%; fiberboard 55.54 million m 3 , a year-on-year increase of 13.1%; plywood 142 million m 3 , an increase of 18.3% year-on-year; 286 million m of decorative panels 2 , an increase of 4% year-on-year. The output of wooden furniture is 239 million pieces, and the output of composite wood flooring is 425 million m 2 , 92.27 million m of solid wood flooring 2 . The total output of wood-based panels, plywoo...

AI Technical Summary

Problems solved by technology

The wood-based panels manufactured by using this additive have the advantages of smoothness, no cracking, no collapse, no mildew, etc., but the prepared wood-based panels have a large amount of formaldehyde release and serious environmental pollution; in addition, the patent does not mention pre-compression, However, considering the properties of talcum powder and wood powder, it is difficult to ensure the pre-compression of urea-formaldehyde resin adhesives by using this patented product as an additive.

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