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Shape memory resin based on biomass benzoxazine as well as preparation method and application of shape memory resin

A technology of benzoxazine and biomass, applied in the field of shape memory resin based on biomass benzoxazine and its preparation and application, to achieve the effects of easy industrialized large-scale production, avoiding the use of solvents, and simple preparation process

Active Publication Date: 2020-07-17
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the existing technology has made great progress in the research and development of shape memory polymers, however, the development of biomass benzoxazines with high heat resistance, high tensile modulus and strength through solvent-free strategies Shape memory resins still have some challenges

Method used

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  • Shape memory resin based on biomass benzoxazine as well as preparation method and application of shape memory resin
  • Shape memory resin based on biomass benzoxazine as well as preparation method and application of shape memory resin
  • Shape memory resin based on biomass benzoxazine as well as preparation method and application of shape memory resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Preparation of aldehyde-containing biomass benzoxazine monomer

[0051] Mix 9.71g of furfurylamine and 6.00g of paraformaldehyde (CAS#: 30525-89-4), stir at room temperature for 15min, then add 15.22g of vanillin, stir at 85°C for 5h, and cool naturally to room temperature, adding ethanol for recrystallization to remove impurities, and drying the solid to obtain the aldehyde-containing biomass benzoxazine monomer.

[0052] In this example, the synthetic reaction formula, hydrogen nuclear magnetic resonance spectrum and carbon nuclear magnetic resonance spectrum of the aldehyde-containing biomass benzoxazine monomer are respectively referred to in the attached figure 1 , figure 2 with image 3 .

[0053] See attached figure 2 , it is the hydrogen nuclear magnetic resonance spectrum based on the aldehyde-containing biomass benzoxazine monomer provided by Example 1 of the present invention, about 9.81ppm represents the active H on the aldehyde group, and about 5....

Embodiment 2

[0078] (1) Preparation of aldehyde-containing biomass benzoxazine monomer

[0079] Mix 9.71g of furfurylamine and 6.60g of paraformaldehyde, stir at room temperature for 15min, then add 15.22g of vanillin, the reaction system is stirred and reacted at a temperature of 85°C for 5h, naturally cooled to room temperature, ethanol recrystallization to remove impurities , to obtain aldehyde-containing biomass benzoxazine monomer after drying.

[0080] (2) Preparation of Schiff base biomass benzoxazine monomer

[0081] Mix 30.04g of aldehyde-containing biomass benzoxazine monomer and 12.65g of polyetheramine D-230 (molecular weight: 230), react at a temperature of 125°C for 1.5h, cool naturally to room temperature, and dry to obtain Schiff base biomass benzoxazine monomer.

[0082] (3) Preparation of shape memory resin based on biomass benzoxazine

[0083] 11.0g Schiff base biomass benzoxazine monomer was put into the mold, the mold was put into an oven for degassing (10min at 150...

Embodiment 3

[0087] (1) Preparation of aldehyde-containing biomass benzoxazine monomer

[0088] Mix 9.71g of furfurylamine and 15g of 40wt% formaldehyde aqueous solution, stir at room temperature for 15min, then add 15.22g of vanillin, stir the reaction system at 85°C for 5h, cool naturally to room temperature, ethanol recrystallization to remove impurities , to obtain aldehyde-containing biomass benzoxazine monomer after drying.

[0089] (2) Preparation of Schiff base biomass benzoxazine monomer

[0090] Mix 27.31g of aldehyde-containing biomass benzoxazine monomer and 11.50g of polyetheramine D-230 (molecular weight: 230), react at a temperature of 125°C for 2h, cool naturally to room temperature, and dry to obtain the desired Fu base biomass benzoxazine monomer.

[0091] (3) Preparation of shape memory resin based on biomass benzoxazine

[0092] Put 10.5g Schiff base biomass benzoxazine monomer into the mold, put the mold into an oven for degassing (10min at 150°C), and then put the ...

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Abstract

The invention discloses shape memory resin based on biomass benzoxazine as well as a preparation method and application of the shape memory resin. The preparation method comprises the following steps:taking biomass furfuryl amine, vanillic aldehyde and paraformaldehyde as raw materials, and carrying out a heating reaction to obtain an aldehyde group-containing biomass benzoxazine monomer; mixingan aldehyde group-containing biomass benzoxazine monomer with polyether amine, and carrying out a coupling reaction to obtain a Schiff base biomass benzoxazine monomer; and curing the Schiff base biomass benzoxazine monomer to obtain the biomass benzoxazine resin with the shape memory function. Compared with the prior art, the benzoxazine shape memory resin disclosed by the invention has excellentthermal performance, high tensile modulus and high strength. According to the benzoxazine resin obtained by the method disclosed by the invention, the original shape can be permanently changed according to needs, the defect that a traditional cross-linked polymer cannot be reprocessed after being formed is overcome, the recovery function under the condition of heating stimulation is achieved, andthe application range of the shape memory polymer is greatly widened due to the excellent thermal performance and mechanical performance.

Description

technical field [0001] The present invention relates to a shape memory resin based on biomass benzoxazine and its preparation and application method, in particular to a shape memory resin based on biomass benzoxazine and its preparation and application method, belonging to functional polymer materials technology field. Background technique [0002] Shape memory polymers (SMP) are a class of stimuli-responsive polymers that can change and fix their shape under certain conditions; afterward, the polymer can be restored by external stimuli such as heat, electricity, light, chemical induction, etc. original shape. Therefore, SMPs have important applications in many fields including aerospace, electronics, medical equipment, robotics, information, construction, textiles, daily necessities, etc.; especially when they are used as deployment components and structures, thereby realizing complex, large Large-scale and high-volume assembly, thereby greatly promoting the progress of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/00
CPCC08G73/00C08G2280/00C07D265/14C08G73/06C08G73/0233
Inventor 顾嫒娟沙新龙梁国正袁莉
Owner SUZHOU UNIV
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