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Waste molasses-based high-strength environment-friendly formaldehyde-free adhesive as well as preparation method and application thereof

A formaldehyde-free adhesive and waste molasses technology, applied in the preparation of animal glue or gelatin, adhesives, adhesive additives, etc., can solve the problems of low thermal conductivity and poor bonding strength of adhesives, and improve thermal conductivity Poor, improve the bonding strength, improve the effect of heat curing rate

Active Publication Date: 2022-03-04
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a waste molasses-based high-strength environmental-friendly formaldehyde-free adhesive and its preparation method and application, so as to solve the technical problems of low thermal conductivity and poor bonding strength of traditional adhesives

Method used

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  • Waste molasses-based high-strength environment-friendly formaldehyde-free adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of waste molasses-based high-strength environmental-friendly formaldehyde-free adhesive, comprising the steps of:

[0029] Mix 100g of waste molasses, 0.5g of phosphoric acid and 40g of water evenly, stir and react at 70°C and 160r / min for 1h, then add 40g of wheat gluten, 4g of carbon nanotubes and 10g of graphene fibers to it, at 60°C, Stir and react at 160r / min for 1h, then add 5g of silica microspheres and 6gKH560 silane coupling agent to it, stir and react at 30°C for 1h at 160r / min, then add 3g of sodium sulfite to it, at 80°C, Stir and react at 400r / min for 1h, then cool to room temperature, add 2g of polyacrylamide thereto, and stir at 160r / min for 1h to obtain an adhesive.

Embodiment 2

[0031] A preparation method of waste molasses-based high-strength environmental-friendly formaldehyde-free adhesive, comprising the steps of:

[0032] Mix 80g of waste molasses, 1g of phosphoric acid and 45g of water evenly, stir and react at 70°C and 160r / min for 1h, then add 50g of wheat gluten, 4g of carbon nanotubes and 10g of graphene fibers to it, and stir at 60°C and 160r / min Stir the reaction at a speed of 1 / min for 1 h, then add 8 g of silica microspheres and 8 g of KH560 silane coupling agent to it, stir and react for 1 h at 30°C and 160r / min, then add 4g of sodium sulfite to it, at 80°C, 400r The mixture was stirred and reacted at a speed of 160r / min for 1h, then cooled to room temperature, 3g of polyacrylamide was added thereto, and stirred at a speed of 160r / min for 1h to obtain an adhesive.

Embodiment 3

[0034] A preparation method of waste molasses-based high-strength environmental-friendly formaldehyde-free adhesive, comprising the steps of:

[0035] Mix 100g of waste molasses, 2g of phosphoric acid and 50g of water evenly, stir and react at 70°C and 160r / min for 1h, then add 60g of wheat gluten, 5g of carbon nanotubes and 12g of graphene fibers to it, and stir at 60°C and 160r / min Stir the reaction at a speed of 1 / min for 1 h, then add 5 g of silica microspheres and 8 g of KH560 silane coupling agent to it, stir and react for 1 h at 30 °C and a speed of 160 r / min, then add 4 g of sodium sulfite to it, at 80 °C, 400 r The mixture was stirred and reacted at a speed of 160r / min for 1h, then cooled to room temperature, 2g of polyacrylamide was added thereto, and stirred at a speed of 160r / min for 1h to obtain an adhesive.

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Abstract

The invention discloses a waste molasses-based high-strength environment-friendly formaldehyde-free adhesive as well as a preparation method and application thereof. The waste molasses / wheat gluten protein composite material is prepared from the following raw materials in parts by weight: 80 to 100 parts of waste molasses, 40 to 60 parts of wheat gluten protein, 4 to 5 parts of carbon nanotubes, 10 to 15 parts of graphene fibers, 5 to 10 parts of silicon dioxide microspheres, 5 to 10 parts of a KH560 silane coupling agent, 3 to 4 parts of sodium sulfite, 2 to 3 parts of polyacrylamide, 0.05 to 2 parts of phosphoric acid and 40 to 50 parts of water. A hydrolysis product reacts with wheat gluten protein under the action of a KH560 silane coupling agent to generate a high-molecular polymer, so that a cross-linked structure is more compact and stable, an adhesive formed after curing has good bonding strength and thermal stability, and carbon nanotubes and graphene fibers are added into the adhesive, so that the adhesive has good bonding strength and thermal stability. The defect of poor heat conductivity of a traditional adhesive is overcome, the thermocuring rate is increased, and the bonding strength is further improved.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a waste molasses-based high-strength environmental-friendly formaldehyde-free adhesive and its preparation method and application. Background technique [0002] Plywood is an important type of wood-based panels. Due to the characteristics of small deformation, large format, inconvenient construction, not easy to warp, and high tensile strength of transverse grains, plywood is widely used in furniture, carriages, shipbuilding, military industry, packaging and other industrial sectors. It has been widely used. Plywood is made of wood veneers bonded together by adhesives and then cold-pressed. It can be seen that the properties of adhesives have a great influence on the bond strength, service life and heat resistance of plywood. , while the existing adhesives for plywood have average bonding strength to wood veneers and poor heat resistance, which greatly reduces the service life ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J199/00C09J189/00C09J11/04
CPCC09J199/00C09J11/04C08L2201/08C08L89/00C08K3/041C08K7/06C08K7/18
Inventor 杨紫馨聂绮陈培进赵中元
Owner NANJING FORESTRY UNIV
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