Preparation method of environment-friendly adhesive for furniture

Abstract

The invention discloses a preparation method of an environment-friendly adhesive for furniture, which comprises the following steps: (1) selecting oxidized starch as a raw material, carrying out graft copolymerization reaction on the oxidized starch and an amide monomer, and cross-linking to form copolymerized starch; (2) the copolymerized starch is subjected to microwave heating treatment, the microwave working frequency is 2450 MHZ, and the heating time is 30-50 S; (3) preparing a biomass adhesive; the adhesive comprises the following components in percentage by mass: 15-40% of a biomass formaldehyde-free adhesive, 8-10% of PMDI and the balance of water-based polyamide, wherein the biomass formaldehyde-free adhesive comprises the following components in percentage by weight: 15-25% of protein natural polymer powder; 1-1.5% of an auxiliary agent; and the balance of water. And (4) adding the biomass adhesive, carrying out ultrasonic dispersion for 10-20 minutes, then stirring for 15-25 minutes at the stirring rotating speed of 350-500 r / min, and then stirring for 3-5 minutes at the rotating speed of 2500-3000 r / min to obtain the environment-friendly adhesive. The adhesive provided by the invention can well control free formaldehyde, and does not contain volatile substance formaldehyde by adding the formaldehyde-free adhesive.

Description

technical field [0001] The invention relates to the technical field of adhesives for furniture, in particular to an environment-friendly adhesive for furniture and a preparation method thereof. Background technique [0002] At present, most of the adhesives are added with toxic chemicals such as formaldehyde, benzene, and toluene, which become non-environmental products that affect the environment and damage human health. Industry, furniture manufacturing, construction and other industries are more obvious, and adhesives are used, and the amount is quite large. Therefore, the use of non-environmental adhesives will cause serious pollution to the environment and bring great harm to people's health. hidden danger. [0003] In the existing wood adhesives, the trialdehyde glue "urea-formaldehyde glue, phenolic glue, melamine formal" accounts for more than 95%, because most of the production uses formaldehyde, phenol, benzene, xylene, isocyanate and other toxic and harmful compo...

AI Technical Summary

Problems solved by technology

[0002] At present, most adhesives are added with toxic chemicals such as formaldehyde, benzene, toluene, etc., which become non-environmental protection products that affect the environment and damage human health. Industry, furniture manufacturing, construction and other industries are more obvious. Adhesives are used, and the amount is quite large. Therefore, the use of non-environmentally friendly adhesives will cause serious pollution to the environment and bring great harm to people's health. Hidden danger

[0003] Among the existing wood adhesives, trialdehyde glue "urea-formaldehyde glue, phenolic glue, melamine formal" accounts for more than 95%. Since most of the toxic and harmful ingredients such as formaldehyde, phenol, benzene, xylene, and isocyanate are used as raw materials in production, the three Aldehyde glue products contain aldehyde residues, which are very harmful to the environment and human body