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A preparation method of rapeseed protein adhesive based on ultra-high pressure and egde composite modification

A compound modification and rapeseed technology, which is applied in the preparation method of peptides, the preparation of animal glue or gelatin, and protein adhesives, etc., can solve the problems of poor water resistance and formaldehyde release of adhesives, and achieve bonding performance and Excellent water resistance, improved water resistance and bonding strength, and the effects of a wide range of raw material sources

Active Publication Date: 2021-08-24
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the deficiencies of the prior art, and aims at problems such as poor water resistance of the adhesive caused by more hydrophilic groups on the surface of the rapeseed protein and formaldehyde release during the bonding process of the traditional adhesive, and provides a method through physical modification and Chemical cross-linking method compound modification means to solve the above problems. Biomass-based rapeseed protein adhesive with excellent water resistance and excellent water resistance. The bonding strength meets the standard of class II plywood in GB / T 9846.3-2004

Method used

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  • A preparation method of rapeseed protein adhesive based on ultra-high pressure and egde composite modification
  • A preparation method of rapeseed protein adhesive based on ultra-high pressure and egde composite modification
  • A preparation method of rapeseed protein adhesive based on ultra-high pressure and egde composite modification

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Effect test

Embodiment 1

[0038] Take 1.5g of rapeseed protein, add 20mL of ultra-pure water, stir at room temperature at a rate of 500r / min for about 2 hours to fully disperse the protein in water, then transfer the pretreated rapeseed protein mixture to a 6# polyethylene plastic bag In , mark the sample as 3, heat seal the sample with a vacuum heat sealer, the vacuum time is 25s, the heat sealing time is 2s, and the heat sealing temperature is 60°C. After the processed sample was treated at 200MPa for 15min, it was transferred to a 25mL beaker, labeled accordingly, and 0.1g of ethylene glycol diglycidyl ether (EGDE) was added to the protein mixture and stirred for 1.5h, then adjusted with 6mol / L NaOH Rapeseed protein adhesive was obtained when the pH was adjusted to 9.

Embodiment 2

[0040] Take 1.5g of rapeseed protein, add 20mL of ultra-pure water, stir at room temperature at a rate of 500r / min for about 2 hours to fully disperse the protein in water, then transfer the pretreated rapeseed protein mixture to a 6# polyethylene plastic bag In , mark the sample as 4, heat seal the sample with a vacuum heat sealer, the vacuum time is 25s, the heat sealing time is 2s, and the heat sealing temperature is 60°C. After the processed sample was treated at 400MPa for 15min, it was transferred to a 25mL beaker, labeled accordingly, and 0.1g of ethylene glycol diglycidyl ether (EGDE) was added to the protein mixture and stirred for 1.5h, then adjusted with 6mol / L NaOH Rapeseed protein adhesive was obtained when the pH was adjusted to 9.

Embodiment 3

[0042] Take 1.5g of rapeseed protein, add 20mL of ultra-pure water, stir at room temperature at a rate of 500r / min for about 2 hours to fully disperse the protein in water, then transfer the pretreated rapeseed protein mixture to a 6# polyethylene plastic bag In , mark the sample as 5, heat seal the sample with a vacuum heat sealer, the vacuum time is 25s, the heat sealing time is 2s, and the heat sealing temperature is 60°C. After the processed sample was treated at 600MPa for 15min, it was transferred to a 25mL beaker, labeled accordingly, and 0.1g of ethylene glycol diglycidyl ether (EGDE) was added to the protein mixture and stirred for 1.5h, then adjusted with 6mol / L NaOH Rapeseed protein adhesive was obtained when the pH was adjusted to 9.

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Abstract

The invention discloses a method for preparing a rapeseed protein adhesive compound modified based on ultra-high pressure technology and EGDE. First extract rapeseed protein from rapeseed meal, then disperse the extracted protein evenly in water, then subject the dispersed protein solution to ultra-high pressure treatment, and then add EGDE to the processed protein solution in proportion, Finally, NaOH was used to adjust the pH, and finally a rapeseed protein adhesive with no aldehyde and excellent water resistance was prepared. The rapeseed protein adhesive synthesized by ultra-high pressure and EGDE modification of the present invention exhibits excellent adhesive performance and water resistance, improves cohesive interaction, and forms a dense cross-linked network. The adhesive prepared by the invention has better wettability and lower viscosity, and significantly improves the dry and wet bonding strength of the adhesive.

Description

technical field [0001] The invention discloses a preparation method of a rapeseed protein adhesive with high bonding strength and excellent water resistance based on ultra-high pressure technology and ethylene glycol diglycidyl ether (EGDE) composite cross-linking modification, which belongs to polymer materials technology field. Background technique [0002] In the wood manufacturing segment, the global wood adhesives market is growing steadily and is expected to reach USD 6.18 billion by 2025. Traditional wood adhesives such as phenolic formaldehyde (PF), urea formaldehyde (UF), and melamine formaldehyde (MF) are mainly derived from non-renewable resources such as petroleum, and will release formaldehyde and other harmful substances during use. Due to the continuous consumption of fossil fuels such as petroleum, and the potential environmental hazards and health concerns of formaldehyde in traditional synthetic adhesives, renewable raw materials and green formaldehyde-fre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/00C08H1/00C07K1/14
CPCC07K1/14C08H1/00C09J189/00
Inventor 吴雪娥徐博斯车黎明何宁周华
Owner XIAMEN UNIV
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