Preparation method of semi-solid bamboo liquid-protein hot pressboard glue

A semi-solid, hot-pressing board technology, used in the field of wood board adhesives, can solve problems such as unevenness, gaps and holes, and achieve the effects of good water resistance, good bonding strength, good environmental benefits and economic benefits

Active Publication Date: 2018-11-13
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the gluing process of the laminates, due to the natural characteristics of the trees when they are planed into thin boards, there are a large number of defects in the patchwork, including unevenness, gaps and holes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) In terms of parts by mass, 100 parts of phenol and 100 parts of concentrated sulfuric acid were placed in a reaction kettle, dissolved, heated to 100°C while stirring, and reacted for 60 minutes to obtain red water-soluble sulfonated phenol.

[0021] 2) Crush the clean bamboo with water content of 25% to 30% to about 80 meshes, take 200 parts, add it to the sulfonated phenol in 1), and add 5 parts of a mixture of polyethylene glycol and glycerol as a catalyst, 30 parts water, heated up to 120°C, stirred for 90 minutes, and cooled to obtain a brown-red viscous liquid containing 30% to 35% solids. Polyethylene glycol and glycerol mixture mass ratio is 7:3;

[0022] 3) Add 50 parts of gelatin powder, bone glue powder or vegetable protein powder with a molecular weight ≥ 60000 to 2) the viscous liquid, stir at 90°C for 120 minutes under temperature control, and cool down to obtain a product with a total solid content of 50% to 55%. Viscous brown-red viscous liquid conta...

Embodiment 2

[0025] 1) According to the parts by mass, 100 parts of phenol and 100 parts of concentrated sulfuric acid were put into a reaction kettle, dissolved, heated to 110°C while stirring, and reacted for 70 minutes to obtain red water-soluble sulfonated phenol.

[0026] 2) Crush the clean bamboo with water content of 25% to 30% to about 80 meshes, take 220 parts, add it to the sulfonated phenol in 1), add 8 parts of polyethylene glycol and glycerol mixture as catalyst, 40 parts water, heated up to 125° C., stirred for 100 minutes, cooled down to obtain a brown-red viscous liquid containing 30% to 35% solids. The mass ratio of polyethylene glycol to glycerol mixture is 6:3.

[0027] 3) Add 50 parts of gelatin powder, bone glue powder or vegetable protein powder with a molecular weight ≥ 60000 to 2) the viscous liquid, stir at 100°C for 130 minutes under temperature control, and cool down to obtain a total solid content of 50% to 55%. Viscous brown-red viscous liquid containing solid...

Embodiment 3

[0030] 1) According to the parts by mass, 100 parts of phenol and 100 parts of concentrated sulfuric acid were put into a reaction kettle, dissolved, heated to 120°C while stirring, and reacted for 90 minutes to obtain red water-soluble sulfonated phenol.

[0031] 2) Crush clean bamboo with water content of 25% to 30% to about 80 meshes, take 250 parts, add it to sulfonated phenol in 1), and add 10 parts of a mixture of polyethylene glycol and glycerol as a catalyst, 50 parts water, heated up to 130°C, stirred and reacted for 120 minutes, cooled down to obtain a brown-red viscous liquid containing 30% to 35% solids. The mass ratio of polyethylene glycol to glycerol mixture is 4:3.

[0032]3) Add 50 parts of gelatin powder, bone glue powder or vegetable protein powder with a molecular weight ≥ 60000 to 2) the viscous liquid, stir at 110°C for 150 minutes under temperature control, and cool down to obtain a total solid content of 50% to 55%. Viscous brown-red viscous liquid con...

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PUM

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Abstract

The invention belongs to the technical field of a wood board adhesive and in particular relates to a preparation method of semi-solid bamboo liquid-protein hot pressboard glue. The preparation methodcomprises the following steps: tanking phenol and concentrated sulfuric acid to react to obtain red water-soluble sulfonated phenol; crushing bamboos until the size is 80 meshes and adding into the sulfonated phenol; supplementing a catalyst and water to obtain brownish red solid-containing viscous liquid; adding powdery protein to obtain viscous brownish red solid-containing viscous liquid; adding soda ash and regulating the pH (Potential of Hydrogen); adding a regulator to obtain brownish red viscous solid-containing glue. According to the preparation method, bamboo fibers and protein polypeptide form a Maillard reaction crosslinking agent in a hot pressing process to obtain an adhesion force adhesive; the functions of no formaldehyde, no volatile solvents and relatively good water resistance are realized.

Description

technical field [0001] The invention belongs to the technical field of wood board adhesives, and in particular relates to a preparation method of semi-solid bamboo liquid-protein hot-pressed board glue, which is based on the composition of bamboo liquid, bamboo fiber solids and protein polypeptides. Background technique [0002] Adhesives are made of binders as the main ingredient, combined with various curing agents, accelerators, fillers and other additives. They have good bonding properties and can firmly connect the same or different materials together. The binder of the adhesive is a substance with adhesive properties in natural polymer compounds, synthetic polymer compounds or inorganic compounds. Silicate or sulfate inorganic compounds such as cement and gypsum are adhesives used in building materials. Compared with welding and mechanical connection, bonding can save the use of rivets and bolts, reduce the weight of components, and stress concentration caused by weld...

Claims

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Application Information

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IPC IPC(8): C09J197/02C09J189/00
Inventor 单志华郭军陈慧
Owner SICHUAN UNIV
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