A kind of manufacturing method of phenolic resin glue for bamboo and wood integrated profiles

Abstract

The invention discloses a preparation method of phenolic resin glue for a bamboo and wood integrated sectional material. The preparation method comprises the following steps: 1) stirring and mixing formaldehyde, phenol, sodium hydroxide, diethylene glycol and ferrum dioxide to form a mixture, adjusting the pH value of the mixture to 7-8 by adding sodium hydroxide and then raising the temperature to 65-85 DEG C for reaction; and 2) adding formaldehyde, phenol, ferrum dioxide and aluminum sesquioxide into a reaction product obtained in the step 1), stirring and raising the temperature to 85-97 DEG C for reaction. When used as an outdoor material, the sectional material prepared by the phenolic resin glue is free of water immersion, expansion, cracking, deformation, mildew and rot and damage by worms, is ultrahigh in density and is durable, so that the bamboo and wood integrated sectional material can achieve a semi-vitreous effect.

Description

【Technical field】 [0001] The invention relates to the field of glue for bamboo and wood integrated profiles, in particular to a method for manufacturing phenolic resin glue for bamboo and wood integrated profiles. 【Background technique】 [0002] With the development and progress of society and the continuous improvement of people's living standards, people are more and more particular about the decoration of indoor living. Generally, people use natural green environmental protection materials for decoration. Landscape construction is becoming more and more important. However, at present, the world's precious and high-quality wood is banned and in short supply, and the demand for natural wood for outdoor buildings in my country and even in the world is increasing. The low-grade wood that has been used for several years has been replaced, resulting in the situation that the outdoor decorative buildings are one year old, two years old, and collapsed in three or five years. [...

AI Technical Summary

Problems solved by technology

But at present, the world's precious and high-quality wood is banned and scarce, and the demand for natural wood for outdoor buildings in my country and the world is increasing. Outdoor decorative wood can only use artificial anti-corrosion wood that cannot withstand the corrosion of the four seasons. It has been replaced by low-grade wood used for several years, resulting in the situation that outdoor decorative buildings are new in one year, old in two years, and collapsed in three to five years.

[0003] The outdoor building materials currently used, in addition to stone, if ecological bamboo wood is required to build landscapes, due to the shortage of high-grade and precious wood that can withstand the weather, only low-grade wood that cannot withstand the weather, such as pine, fir, etc., such as building Most of the bamboo art landscapes are built with logs and bamboos. If they are placed outdoors, the logs and bamboos will usually crack and rot within a year or two.

At present, there are also outdoor decorations using anti-corrosion treated wood. Although it will not crack immediately, it will be moldy and rotted within three to five years at most.