Self-repairing material and preparation method thereof

A technology of self-healing materials and polymers, which is applied in the field of new materials, can solve the problems of expensive replacement costs, etc., and achieve the effects of good solvent performance, good performance, and high temperature resistance

Inactive Publication Date: 2021-02-19
嘉兴市轩禾园艺技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a part of a complex circuit fails due to material damage, the entire circuit may have to be replaced, and the replacement cost is very expensive

Method used

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  • Self-repairing material and preparation method thereof
  • Self-repairing material and preparation method thereof
  • Self-repairing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a self-healing material,

[0033] Preparation of polyamide polymer: add succinamide and furfural to methanol, stir for 1 hour, add THF solution containing 1,4-diisocyanobenzene and 2-hydroxypropionic acid, react at 70°C for 48 hours, reduce pressure The solvent was removed by rotary evaporation to obtain the thick product of polyamide polymer; the thick product was dissolved in dichloromethane, and ether was added to separate out the solid, which was repeated 3 times, and the solvent was evaporated under reduced pressure, and dried to obtain the polyamide polymer (yield 58.37%). The addition amount of succinamide is 20wt% of methanol, the addition amount of furfural is 60wt% of methanol, the addition amount of 1,4-diisocyanobenzene in THF solution is 16wt% of THF, the addition amount of 2-hydroxypropionic acid in THF solution The addition amount is 40wt% of THF, the addition amount of THF solution is 200wt% of methanol solution, the addition amou...

Embodiment 2

[0039] A method for preparing a self-healing material,

[0040]Preparation of polyamide polymer: Add succinamide and furfural to methanol, stir for 1 hour, add THF solution containing 1,4-diisocyanobenzene and 2,2-dimethylolpropionic acid, and add succinamide and furfural at a temperature of 70°C React for 48 hours, remove the solvent by rotary evaporation under reduced pressure, and obtain the crude product of polyamide polymer; dissolve the crude product in dichloromethane, add ether to precipitate the solid, repeat 3 times, evaporate the solvent under reduced pressure, and dry to obtain polyamide Polymer (59.41% yield). The addition amount of succinamide is 20wt% of methanol, the addition amount of furfural is 60wt% of methanol, the addition amount of 1,4-diisocyanobenzene in THF solution is 16wt% of THF, and the addition amount of 2,2-dihydroxy The addition of methacrylic acid is 40wt% of THF, the addition of THF solution is 200wt% of methanol solution, the addition of cr...

Embodiment 3

[0046] A method for preparing a self-healing material,

[0047] Preparation of self-healing material: the mixture of the polyamide polymer shown in formula (1) and the polyamide polymer shown in formula (2) and diphenylmethyl bismaleimide are added to dioxygen In the six rings, under the protection of nitrogen, stir at a temperature of 90°C for 20h, take it out and pour it into a mold, and continue to react at a temperature of 60°C for 48h to obtain a self-healing material. The addition amount of the polyamide polymer mixture is 15wt% of dioxane, and the polyamide polymer represented by formula (1) is mixed with the polyamide polymer represented by formula (2) in a mass ratio of 1:4 , the addition of benzhydryl bismaleimide is 9wt% of dioxane.

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Abstract

The invention discloses a self-repairing material and a preparation method thereof, belongs to the technical field of new materials, and particularly relates to a preparation method of a self-repairing material. The self-repairing material is prepared from a polyamide polymer obtained by polymerizing succinamide, 1, 4-diisocyanobenzene, furfural and 2-hydroxy propionic acid or 2, 2-dimethylolpropionic acid, wherein the preparation method of the polyamide polymer comprises the following steps of: adding succinamide and furfural into methanol, adding a THF solution containing 1, 4-diisocyanobenzene, and reacting at 50-80 DEG C for 24-72 hours to obtain the polyamide polymer. The obtained self-repairing material is good in self-repairing capacity, and the repairing rate reaches 85% or above;and the self-repairing material is good in acid resistance, good in alkali resistance, good in solvent (THF, methylbenzene and ethyl alcohol) resistance and good in high-temperature resistance, the mass loss is 0.14% or below after the self-repairing material is soaked in 1M hydrochloric acid for 7 days, and the mass loss is 0.38% or below after the self-repairing material is soaked in a 1M sodiumhydroxide solution for 7 days.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a self-repairing material and a preparation method thereof. Background technique [0002] After the middle of the 20th century, artificially synthesized polymer materials came out and were widely used. Among them, self-healing materials with unique functions are particularly attractive, such as anti-corrosion self-healing materials, super-hydrophobic self-healing materials, and conductive self-healing materials. In various fields of traditional industries, it is very common for materials to be cracked by external forces during use. It is well known that internal cracks in many materials do not self-heal, let alone surface cracks. The continuous development of these cracks or fissures causes permanent damage to the material. This will not only produce a waste of resources, but also may bring a deadly threat. This phenomenon is more obvious in the field of aer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/38C08G69/40C08L77/00C08K5/3415C08K5/098C08K5/10C08J3/24
CPCC08G69/38C08G69/40C08J3/24C08J2377/00C08K5/098C08K5/10C08K5/3415
Inventor 不公告发明人
Owner 嘉兴市轩禾园艺技术有限公司
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