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A kind of bio-based protein adhesive for wood-based panels and preparation method thereof

A bio-based, wood-based panel technology, applied in protein waste adhesives, adhesive additives, polymer adhesive additives, etc., can solve problems such as environmental pollution and resource waste

Active Publication Date: 2021-09-14
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, except for a small amount of these feathers used as thermal clothing fillers and animal feed, most of them are treated as waste, which not only wastes resources, but also pollutes the environment through traditional disposal methods such as incineration and landfill.

Method used

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  • A kind of bio-based protein adhesive for wood-based panels and preparation method thereof
  • A kind of bio-based protein adhesive for wood-based panels and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The weight of bio-based protein adhesives for wood-based panels is shown in Table 1:

[0037] Table 1

[0038] add ingredients quality main agent 45kg enhancer 0.5kg viscosity modifier 0.1kg crosslinking agent 9kg catalyst 0.1kg

[0039] The main ingredient is deconstructed feather protein powder, the protein content of which is 85.5%, and the particle size is 200-300 mesh.

[0040] The preparation method of described deconstructed feather protein powder is:

[0041](1) tap water thoroughly washes the feathers, then places them in a solvent to soak for two days, and replaces the solvent every day. The solvent is a 50% ethanol aqueous solution by volume fraction, and finally rinses the feathers with distilled water to eliminate solvent residues. The washed feathers are kept at 50°C Dried for 48 hours; soaking in ethanol solution can deconstruct feather protein powder, open disulfide bonds, and improve water solubility a...

Embodiment 2

[0061] The weight of bio-based protein adhesives for wood-based panels is shown in Table 2:

[0062] Table 2

[0063] add ingredients quality main agent 40kg enhancer 1.2kg viscosity modifier 0.1kg crosslinking agent 15kg catalyst 0.3kg

[0064] The main ingredient is deconstructed feather protein powder, the protein content of which is 85.5%, and the particle size is 200-300 mesh.

[0065] The preparation method of described deconstructed feather protein powder is:

[0066] (1) tap water thoroughly washes the feathers, then places them in a solvent to soak for two days, and replaces the solvent every day. The solvent is a 50% ethanol aqueous solution by volume fraction, and finally rinses the feathers with distilled water to eliminate solvent residues. The washed feathers are kept at 50°C Drying under the hood for 48h;

[0067] (2) Feather powder is ground to 200-300 mesh, the NaOH of gained feather protein powder is in the...

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Abstract

The invention discloses a bio-based protein adhesive for wood-based panels and a preparation method thereof, comprising the following components: a main agent, dispersion medium water, a reinforcing agent, a viscosity regulator, a crosslinking agent, and a catalyst; Feather protein powder, the dispersion medium water is common tap water or demineralized water, the reinforcing agent is surface-modified nano-kaolin, the viscosity regulator is polyacrylamide, and the cross-linking agent is epoxidized bark extract , the catalyst is aqueous sodium hydroxide solution. The above-mentioned chemical reagent combination treatment method can effectively open the highly cross-linked disulfide bonds in feather proteins, increase the reactivity of feather proteins, and facilitate the formation of cross-linked structures between cross-linking agents and protein molecules. Nano-kaolin can be chemically bonded to cross-links. In the structure, the water-resistant bonding performance of the adhesive is further improved through stress conduction and dispersion.

Description

technical field [0001] The invention relates to the technical field of artificial board preparation. Specifically, it is a bio-based protein adhesive for wood-based panels and a preparation method thereof. Background technique [0002] Adhesives currently used in the wood processing industry are mainly thermoplastic adhesives that rely on fossil resources, and aldehyde-based adhesives (urea-formaldehyde resins, phenolic resins, and melamine-formaldehyde resins) are the most widely used. In 2017, the total output of wood-based panels in my country was about 300 million cubic meters, accounting for about 50% of the world's total output. The consumption of urea-formaldehyde resin and its modified melamine-formaldehyde resin and co-condensation resin accounts for about 90% of the total consumption of adhesives for wood-based panels; the consumption of phenolic resin adhesives accounts for about 90% of the total consumption of adhesives in the wood-based panel processing industr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/04C09J11/04C09J11/08C09J11/06C12P21/06
CPCC08K2201/011C09J11/04C09J11/06C09J11/08C09J189/04C12P21/06C08L33/26C08K9/04C08K3/346C08K5/1515
Inventor 罗晶胡明明叶至彦周莹高强李建章
Owner NANJING FORESTRY UNIV
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