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Biomass-base and waterproof wooden adhesive without formaldehyde and its production

A wood adhesive and biomass technology, applied in the direction of lignocellulosic material adhesives, adhesive types, etc., can solve the problems of high price, high price and thin profit of wood adhesives, and achieve a wide range of biomass sources and superior water resistance. , the effect of good practical performance

Inactive Publication Date: 2006-05-31
江西南大中德食品工程中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are foreign reports of using soybean protein as raw material and amines as modified groups to prepare formaldehyde-free wood adhesives. However, the competition in the wood processing industry is fierce and profits are thin. Wood adhesives using soybean protein as raw materials are expensive and not suitable for large-scale production. production of wood processing industry
The journal literature of "A New Green Adhesive—A Brief Discussion on Modified Vegetable Protein-Based Wood Adhesive / Chemistry and Bonding. 2003 (4).-179-181" reported that the wood adhesive made of vegetable protein, especially soybean protein Renewable, cheap, wide sources of raw materials, environmental protection and other advantages, the literature also pointed out that the price of wood adhesives made of soybean protein is relatively expensive
This document also points out that the wood adhesives made of other vegetable proteins are involved in many aspects due to industrialization, and there is no major wood adhesive made of other vegetable proteins with strong practicability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] Weigh 50 parts of corn stalks, after removing impurities and crushing pretreatment, add 30 parts of xylitol, 20 parts of propylene carbonate, liquefy at 195 °C and 1.5 atm pressure for 55 minutes, pass through a colloid mill, and then add 20 parts 1 part of tartaric acid and 20 parts of phthalic anhydride, heated and melted, and stirred evenly. After cooling, add 1 part of iron stearate and mix well. A new type of wood adhesive can be obtained.

[0033] Conditions of Use

[0034] Wood moisture content / %

example 2

[0036] Weigh 100 parts of yellowed aged rice, after pretreatment, add 30 parts of xylitol, 20 parts of propylene carbonate, liquefy at 180°C and 1.0 atm pressure for 35 minutes, pass through a colloid mill, and then add 20 parts of tartaric acid And 20 parts of phthalic anhydride, heated and melted, stirred evenly. After cooling, add 0.8 parts of magnesium stearate and mix well. A new type of wood adhesive can be obtained.

[0037] Conditions of Use

example 3

[0039] Weigh 60 parts of waste paper, after removing impurities and crushing pretreatment, add 40 parts of xylitol, 20 parts of propylene carbonate, liquefy at 190 °C and 1.2 atm pressure for 55 minutes, pass through a colloid mill, and then add 20 parts 1 part of tartaric acid and 20 parts of phthalic anhydride, heated and melted, and stirred evenly. After cooling, add 0.8 parts of iron stearate and mix well. A new type of wood adhesive can be obtained.

[0040] Conditions of Use

[0041] Glue amount (double side)

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PUM

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Abstract

A non-methanal water-proof wood adhesive with biomass and its production are disclosed. It consists of biomass 10-300 proportion, liquefying agent 50-100 proportion, cross-linking agent and 10-100 proportion. The process is carried out by removing impurities, breaking, pre-treating, adding into liquefying agent, liquefying at 70-300íÒC and ¿C20atm for 5mins-24hrs, adding into cross-linking agent, heating, melting and agitating. It has better water-proof performance.

Description

technical field [0001] The invention relates to a formaldehyde-free water-resistant wood adhesive, in particular to a formaldehyde-free water-resistant wood adhesive based on biomass and a preparation method thereof. Background technique [0002] At present, the three-aldehyde glue "urea-formaldehyde glue, phenolic glue, melamine formal" accounts for more than 95% of wood adhesives, and most of the three-aldehyde glue uses formaldehyde, phenol, benzene, xylene, isocyanate and other toxic and harmful ingredients as raw materials in the production. High-quality trialdehyde wood adhesives contain aldehyde residues. If the process is not properly controlled, it will be very harmful to the environment and human body. There are foreign reports of using soybean protein as raw material and amines as modified groups to prepare formaldehyde-free wood adhesives. However, the competition in the wood processing industry is fierce and profits are thin. Wood adhesives using soybean protein...

Claims

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Application Information

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IPC IPC(8): C09J197/02
Inventor 阮榕生刘玉环林向阳刘成梅涂宗财高荫榆张锦胜
Owner 江西南大中德食品工程中心
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