A kind of full bio-based two-component soybean adhesive, preparation method and application thereof

A soybean adhesive, a two-component technology, applied in the preparation of animal glue or gelatin, adhesives, non-polymer adhesive additives, etc., can solve the problem of not being able to take into account flame retardancy, water resistance, full bio-based practicability and environmental protection And other problems, to achieve the effect of improving the actual application performance, stable performance and fast curing speed

Active Publication Date: 2022-04-08
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem of the practicability and environmental protection of flame retardancy, water resistance and full bio-based in the existing glue making technology, and provides a full bio-based two-component soybean adhesive, a preparation method and its application

Method used

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  • A kind of full bio-based two-component soybean adhesive, preparation method and application thereof
  • A kind of full bio-based two-component soybean adhesive, preparation method and application thereof
  • A kind of full bio-based two-component soybean adhesive, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] In a 250mL beaker, add 22.2g of soybean protein isolate powder (protein weight percentage ≥ 90%), 65.3g of deionized water, stir and mix evenly, add 3.3g of sodium hydroxide (20wt% aqueous solution), adjust the pH to 10.5 , heated up to 60°C, reacted for 2 hours under 400r / min mechanical stirring, added phytic acid 5.5g (70wt% aqueous solution), and the measured pH value was 4.0 to obtain soybean protein mixed main ingredient A; then add soybean protein mixed main ingredient Add 3.7 g of cross-linking curing agent B furfuryl alcohol to A, and continue to stir for 15 minutes to obtain the target soybean protein adhesive, which is recorded as P4F16.7.

Embodiment 2

[0066] In a 250mL beaker, add 23.6g of soybean protein powder (protein weight percentage ≥ 90%), 65.0g of deionized water, stir and mix, add 3.2g of 20wt% sodium hydroxide solution, adjust the pH to 10.0, and heat up to 40 ℃, after reacting for 1 hour under mechanical stirring at 400r / min, add 7.0g of phytic acid (70wt% aqueous solution), the measured pH value is 3.5, and obtain soybean protein mixed main ingredient A; then add cross-linked soybean protein mixed main ingredient A The mixture B of furfuryl alcohol and furfural as the curing agent is 1.2g, wherein the mass ratio of furfuryl alcohol to furfural is 1:1, and the stirring is continued for 15 minutes to obtain the target soybean protein adhesive, which is marked as P3.5F5.

Embodiment 3

[0068] Add soybean protein powder 23.3g (protein weight percentage ≥ 90%), deionized water 64.0g in a 250mL beaker, after stirring and mixing, add 2.7g of 20wt% sodium hydroxide solution, adjust the pH to 9.5, and heat up to 70 ℃, after reacting for 3 hours under mechanical stirring at 400r / min, 7g of phytic acid (70wt% aqueous solution) was added, and the pH value was measured to be 3.0 to obtain soybean protein mixed main ingredient A; then 3g of bio-based crosslinking curing agent furfuryl alcohol, water 3g was stirred and mixed to obtain cross-linking curing agent B. Add 3g of cross-linking curing agent B to soybean protein mixing main agent A, and continue stirring for 15 minutes to obtain the target soybean protein adhesive, which was recorded as P3.5F10.

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Abstract

The invention discloses a full bio-based two-component soybean adhesive, a preparation method and its application, and belongs to the technical field of wood adhesive preparation, which includes soybean protein mixing main agent A and cross-linking curing agent B, calculated in parts by weight. The soybean protein mixed main agent A includes 20-30 parts of soybean protein powder, 40-70 parts of deionized water, 2-5 parts of alkali, and 4-10 parts of phytic acid. The cross-linking curing agent B includes bio-based cross-linking curing 70-100 parts of agent, 0-30 parts of deionized water. The adhesive prepared by this method has moderate viscosity and good wettability on the wood surface, and can form a strong and dense cross-linked structure on the bonding surface after curing. The adhesive has high dry / wet bonding strength and good thermal stability. The flame retardancy and water resistance of the artificial board prepared by the adhesive are significantly improved, and the practical application performance of the soybean protein adhesive is improved.

Description

technical field [0001] The invention relates to the technical field of wood adhesive preparation, in particular to an all-bio-based two-component soybean adhesive, a preparation method and an application thereof. Background technique [0002] With the continuous popularization of sustainable development and green environmental protection concepts, the preparation of bio-based adhesives from natural renewable biomass and its application in wood-based panels and furniture bonding has attracted widespread attention. Various biomass resources, including cellulose, lignin, starch, soybean protein, chitin, and tannin, have been used as renewable raw materials in the field of wood-based panel processing and manufacturing. [0003] The preparation of wood adhesives from soybean protein has the advantages of reliability, abundance, low cost, easy operation, and environmental friendliness. Therefore, soybean protein adhesives are rated as new environmentally friendly adhesives that a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/00C09J11/06B27D1/04B27N1/02
CPCC09J189/00C09J11/06B27D1/04B27N1/0209C08K5/1535C08K5/521
Inventor 孙理超赵欣桐刘涛刘珍珍王清文欧荣贤郝笑龙
Owner SOUTH CHINA AGRI UNIV
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