Flame retardant wood modifier and preparation method thereof

Abstract

The invention belongs to the field of wood modification treatment, and particularly relates to a flame retardant wood modifier, comprising the following raw materials by weight: dicyandiamide, boric acid, borax, triethanolamine, urea, ammonium persulfate, ammonium bicarbonate, polyphosphate, methyl methacrylate, phosphoric acid, polyethylene glycol, polyoxyethylene alkyl ether, sodium dodecyl sulfate, 1,2,3,4-butane tetracarboxylic acid and water; and a preparation method of the modifier. Catalytic reaction effects of the urea and the phosphoric acid are improved through adding the ammonium persulfate and the ammonium bicarbonate. Wood flame retardance and corrosion resistance in a wood modification process are improved through adding the polyethylene glycol, the ammonium bicarbonate, thedicyandiamide and the polyphosphate. Wood dimension stability in a wood modification process can be improved through adding the polyoxyethylene alkyl ether, the methyl methacrylate and other related components.

Description

technical field [0001] The invention belongs to the field of wood modification treatment, in particular to a flame-retardant wood modifier and a preparation method thereof. Background technique [0002] Wood modification is a physical and chemical processing method to improve or change the physical, mechanical, chemical properties and structural characteristics of wood. Its purpose is to improve the natural corrosion resistance, acid resistance, alkali resistance, flame retardancy and mechanical strength of wood. and dimensional stability. However, the existing wood modifiers are affected by their components, which often make it difficult to meet the requirements of wood modification performance in the actual wood modification process. [0003] Chinese patent CN201410351212.4 discloses a wood modifier, the components of which are expressed in parts by weight: 60-200 parts of low-molecular-weight phenolic resin, 10-120 parts of flame retardant, and 50-800 parts of water; Th...

AI Technical Summary

Problems solved by technology

However, the existing wood modifiers are affected by their components, which often make the performance of wood modification difficult to meet the requirements in the actual wood modification process

[0003] Chinese patent CN201410351212.4 discloses a wood modifier, the components of which are expressed in parts by weight: 60-200 parts of low-molecular-weight phenolic resin, 10-120 parts of flame retardant, and 50-800 parts of water; The molecular weight phenolic resin comprises the following weight components: 80 to 400 parts of phenol, 80 to 500 parts of 37% (g / g) formaldehyde, 0 to 90 parts of urea, and 5 to 30 parts of 40 (g / g) sodium hydroxide; The flame retardant includes the following components by weight: 430-520 parts of formaldehyde, 440-480 parts of ethylene glycol, 450-560 parts of borax, 1400-2100 parts of water, 330-450 parts of triethanolamine, K 12 15-30 parts, 900-1800 parts of ammonia water, 1175-2300 parts of dicyandiamide, 1645-1936 parts of phosphoric acid, 1200-1545 parts of boric acid; the wood modifier has achieved remarkable improvement in the dimensional stability and mechanical properties of wood Improve, and at the same time endow wood with flame retardant properties; but this modifier uses a large amount of formaldehyde, which is not environmentally friendly and safe