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Monomer for biomass benzoxazine shape memory resin and its preparation method and application

A benzoxazine and biomass technology, which is applied in the field of biomass benzoxazine shape memory resin monomers and preparation thereof, achieves the effects of easy industrialized large-scale production, simple preparation process, and avoiding the use of solvents

Active Publication Date: 2021-09-28
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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  • Monomer for biomass benzoxazine shape memory resin and its preparation method and application
  • Monomer for biomass benzoxazine shape memory resin and its preparation method and application
  • Monomer for biomass benzoxazine shape memory resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of aldehyde-containing biomass benzoxazine monomer

[0047] 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.

[0048] 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 and image 3 .

[0049] 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 5.0...

Embodiment 2

[0074] (1) Preparation of aldehyde-containing biomass benzoxazine monomer

[0075] Mix 9.71g of furfurylamine and 6.60g of paraformaldehyde, stir at room temperature for 15min, then add 15.22g of vanillin, stir the reaction system at a temperature of 85°C for 5h, cool naturally to room temperature, and remove impurities by ethanol recrystallization , to obtain aldehyde-containing biomass benzoxazine monomer after drying.

[0076] (2) Preparation of Schiff base biomass benzoxazine monomer

[0077] 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.

[0078] (3) Preparation of shape memory resin based on biomass benzoxazine

[0079] 11.0g Schiff base biomass benzoxazine monomer was put into the mold, the mold was put into an oven for degassing (10min at 150°C), and then the ...

Embodiment 3

[0083] (1) Preparation of aldehyde-containing biomass benzoxazine monomer

[0084] 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.

[0085] (2) Preparation of Schiff base biomass benzoxazine monomer

[0086] 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.

[0087] (3) Preparation of shape memory resin based on biomass benzoxazine

[0088] 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 a shape memory resin based on biomass benzoxazine and its preparation method and application. Using biomass furfurylamine, vanillin and paraformaldehyde as raw materials, aldehyde-containing biomass benzoxazine is obtained through heating reaction. Oxazine monomer; mix aldehyde-containing biomass benzoxazine monomer with polyether amine, and obtain Schiff base biomass benzoxazine monomer through coupling reaction; Schiff base biomass benzoxazine monomer After solidification, the biomass benzoxazine resin with shape memory function can be obtained. The benzoxazine shape memory resin of the present invention has excellent thermal properties, high tensile modulus and strength. The original shape of the benzoxazine resin obtained by the method of the present invention can be permanently changed as required, which overcomes the defect that traditional cross-linked polymers cannot be processed again after molding, and realizes the recovery function under heating stimulation conditions, excellent The excellent thermal and mechanical properties also greatly improve the application range of shape memory polymers.

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 monomer for biomass benzoxazine shape memory resin and its preparation method and application, belonging to functional polymers field of materials technology. 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 progre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D413/14C08G14/06
CPCC07D413/14C08G14/06
Inventor 梁国正
Owner SUZHOU UNIV
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