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Preparation method and application of high-biomass-based polyimine self-repairing polymer

A technology based on polyimide and biomass, applied in the direction of aldehyde/ketone condensation polymer adhesives, adhesive types, adhesives, etc., to achieve the effect of widening the application range, high self-healing efficiency and low production cost

Pending Publication Date: 2022-07-29
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the prior art CN110423334A discloses a fully bio-based polymer material based on ester bond crosslinking, which can perform crack self-healing, reprocessing and shape memory; however, due to the higher activation energy of the ester bond, the material The self-healing and reprocessing requires catalyst catalysis and higher temperature 180-200℃

Method used

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  • Preparation method and application of high-biomass-based polyimine self-repairing polymer
  • Preparation method and application of high-biomass-based polyimine self-repairing polymer
  • Preparation method and application of high-biomass-based polyimine self-repairing polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Synthesis of acrylated castor oil: 13.95g (0.015mol) castor oil, 10.8g (0.15mol) acrylic acid, 0.7wt.% p-toluenesulfonic acid catalyst and 0.3wt.% hydroquinone polymerization inhibitor were added 40mL microwave reaction flask with magnet. The microwave reaction temperature was 120°C, and the reaction was carried out for 20 minutes. After the reaction, washed with saturated brine until the pH was neutral, removed water with anhydrous magnesium sulfate, and suction filtered to obtain a yellow oily liquid acrylated castor oil (ACO).

[0040] (2) Synthesis of castor oil-based polyamine: 11 g (0.01 mol) of ACO and 3.1 g (0.03 mol) of diethylenetriamine were combined

[0041] It was put into a 50 ml conical flask with a magnet, stirred at 400 rpm, and reacted at room temperature for 12 hours. After the reaction was completed, it was washed with saturated saline until pH became neutral. Use anhydrous magnesium sulfate to remove water, suction filtration, and rotary evap...

Embodiment 2

[0046] (1) Synthesis of acrylated castor oil: 13.95g (0.015mol) castor oil, 10.8g (0.15mol) acrylic acid, 0.7wt.% p-toluenesulfonic acid catalyst and 0.3wt.% hydroquinone polymerization inhibitor were added 40mL microwave reaction flask with magnet. The microwave reaction temperature was 120°C, and the reaction was carried out for 20 minutes. After the reaction, the mixture was washed with saturated brine until pH became neutral, water was removed with anhydrous magnesium sulfate, and suction filtered to obtain a yellow oily liquid acrylated castor oil.

[0047] (2) Synthesis of castor oil-based polyamine: add 11 g (0.01 mol) of ACO and 3.07 g (0.03 mol) of 1,5-pentanediamine to a 50 ml conical flask with a magnet, stir at 400 rpm, and react at room temperature for 12 hours . After the reaction was completed, it was washed with saturated saline until pH became neutral. Use anhydrous magnesium sulfate to remove water, suction filtration, and rotary evaporation to obtain a re...

Embodiment 3

[0052] (1) Synthesis of acrylated castor oil: 13.95g (0.015mol) castor oil, 10.8g (0.15mol) acrylic acid, 0.7wt.% p-toluenesulfonic acid catalyst and 0.3wt.% hydroquinone polymerization inhibitor were added 40mL microwave reaction flask with magnet. The microwave reaction temperature was 120°C, and the reaction was carried out for 20 minutes. After the reaction, the mixture was washed with saturated brine until pH became neutral, water was removed with anhydrous magnesium sulfate, and suction filtered to obtain a yellow oily liquid acrylated castor oil.

[0053] (2) Synthesis of castor oil-based polyamine: add 11 g (0.01 mol) of ACO and 3.07 g (0.03 mol) of 1,5-pentanediamine to a 50 ml conical flask with a magnet, stir at 400 rpm, and react at room temperature for 12 hours . After the reaction was completed, it was washed with saturated saline until pH became neutral. Use anhydrous magnesium sulfate to remove water, suction filtration, and rotary evaporation to obtain a re...

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Abstract

The invention relates to a preparation method of a high-biomass-based polyimine self-repairing polymer, the high-biomass-based polyimine self-repairing polymer is prepared by taking natural and renewable vegetable oil ester and bio-based polyaldehyde as raw materials, and the high-biomass-based polyimine self-repairing polymer is subjected to cross-linking polymerization through a dynamic covalent bond imine bond. As the imine bond is a reversible covalent bond with high activity, a dynamic reaction can be realized at a mild temperature in the absence of a catalyst, the curing temperature and the reprocessing temperature required by the self-repairing polymer are low, and high self-repairing efficiency of the polymer can be realized at room temperature; a mussel foot-like protein structure is constructed by a variety of polar groups and coupled aromatic rings in the structure, and abundant intermolecular interaction can be formed, so that the high-biomass-based polyimine self-repairing polymer shows effective adhesive force on different substrates. In addition, due to the fact that the imine bond can be dissociated under the acidic condition, the high biomass-based polyimine self-repairing polymer has the extremely high monomer recovery rate.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, in particular to a preparation method and application of a high biomass-based polyimide self-repairing polymer Background technique [0002] Polymer materials are widely used in aviation, aerospace, electronics, machinery and other technical fields because of their excellent properties. However, materials will inevitably be damaged during use, and microcracks are the main form of microscopic damage to materials, which will lead to the decline of mechanical properties and service life of materials. As a novel smart structural functional material, self-healing polymer materials provide a new method for preventing potential hazards by realizing the self-healing of micro-cracks, and have great development prospects in some important engineering and cutting-edge technology fields. and application value. Self-healing polymer is to achieve self-healing of micro-cracks inside the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/06C09J161/22
CPCC08G12/06C09J161/22
Inventor 张猛赵琦宋飞周永红贾普友薄采颖
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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