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Room temperature intrinsic self-repairing elastomer material with super ductility and preparation method of room temperature intrinsic self-repairing elastomer material

An elastomer material and self-healing technology, applied in the field of polymer materials, can solve problems such as the inability to achieve self-healing at room temperature and limit the practical application of materials, and achieve excellent self-healing function, easy operation, and simple operation

Inactive Publication Date: 2018-08-21
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, intrinsically self-healing polymer materials based on reversible covalent bond interactions are largely unable to achieve self-healing at room temperature, which greatly limits the practical application of such materials.

Method used

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  • Room temperature intrinsic self-repairing elastomer material with super ductility and preparation method of room temperature intrinsic self-repairing elastomer material
  • Room temperature intrinsic self-repairing elastomer material with super ductility and preparation method of room temperature intrinsic self-repairing elastomer material
  • Room temperature intrinsic self-repairing elastomer material with super ductility and preparation method of room temperature intrinsic self-repairing elastomer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A room temperature intrinsically self-healing elastomeric material with ultra-ductility, prepared from polycondensation of 1-(3-aminopropyl)imidazole, toluene diisocyanate-terminated polypropylene glycol, triamino-terminated polypropylene glycol, and zinc chloride , wherein the molar ratio of toluene diisocyanate-terminated polypropylene glycol, 1-(3-aminopropyl) imidazole and triamino-terminated polypropylene glycol is 2:1:1, and the molar ratio of zinc ions to imidazole groups is 1: 3.

[0031] The polypropylene glycol structural formula of described toluene diisocyanate termination is as follows:

[0032]

[0033] Wherein, the molecular weight of toluene diisocyanate-terminated polypropylene glycol is 2300.

[0034] The polypropylene glycol structural formula of described triamino-terminated is as follows:

[0035]

[0036] Wherein, the molecular weight of the triamino-terminated polypropylene glycol is 440.

Embodiment 2

[0038] A room temperature intrinsically self-healing elastomeric material with ultra-ductility, which is formed by polycondensation of 1-(3-aminopropyl)imidazole, toluene diisocyanate-terminated polypropylene glycol, triamino-terminated polypropylene glycol, and trifluoromethanesulfonic acid Zinc, wherein the molar ratio of toluene diisocyanate-terminated polypropylene glycol, 1-(3-aminopropyl)imidazole and triamino-terminated polypropylene glycol is 2:1:1, and the molar ratio of zinc ions to imidazole groups It is 1:4.

[0039] The polypropylene glycol structural formula of described toluene diisocyanate termination is as follows:

[0040]

[0041] Wherein, the molecular weight of toluene diisocyanate-terminated polypropylene glycol is 2300.

[0042] The polypropylene glycol structural formula of described triamino-terminated is as follows:

[0043]

[0044] Wherein, the molecular weight of the triamino-terminated polypropylene glycol is 440.

Embodiment 3

[0046] A room temperature intrinsically self-healing elastomeric material with ultra-ductility, prepared from polycondensation of 1-(3-aminopropyl)imidazole, toluene diisocyanate-terminated polypropylene glycol, triamino-terminated polypropylene glycol, and zinc perchlorate The molar ratio of toluene diisocyanate-terminated polypropylene glycol, 1-(3-aminopropyl) imidazole and triamino-terminated polypropylene glycol is 2:1:1, and the molar ratio of zinc ions to imidazole groups is 1 :4.

[0047] The polypropylene glycol structural formula of described toluene diisocyanate termination is as follows:

[0048]

[0049] Wherein, the molecular weight of toluene diisocyanate-terminated polypropylene glycol is 2300.

[0050] The polypropylene glycol structural formula of described triamino-terminated is as follows:

[0051]

[0052] Wherein, the molecular weight of the triamino-terminated polypropylene glycol is 440.

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Abstract

The invention discloses a room temperature intrinsic self-repairing material with super ductility and a preparation method of the room temperature intrinsic self-repairing elastomer material, and belongs to the field of polymer materials. The material is prepared from 1-(3-aminopropyl)imidazole, toluene diisocyanate-terminated polypropylene glycol and triamino-terminated polypropylene glycol by mixing for polycondensation at certain temperature and adding zinc ion salt for crosslinking. The preparation method of the material comprises the following steps: dissolving 1-(3-aminopropyl)imidazole,toluene diisocyanate-terminated polypropylene glycol and triamino-terminated polypropylene glycol in chloroform, then adding a certain amount of zinc ion salt to the solution, performing drying at room temperature for a period of time, and continuing drying at 60 DEG C to obtain the room temperature intrinsic self-repairing material with super ductility. The material can not only realize the repair process at room temperature, but also be stretched to 90 times of the original length. More importantly, compared with the prior art, the preparation process is simple, preparation efficiency is high, and the material is suitable for industrial mass production.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a room temperature intrinsic self-healing elastomer material with super-ductility and a preparation method thereof. Background technique [0002] As early as the mid-1980s, the US military took the lead in proposing the concept of smart materials with self-diagnosis and self-repair functions by imitating the principle of biological damage-self-repair. On this basis, Professor S.R.White of the University of Illinois in the United States reported for the first time a self-healing polymer material based on microcapsule implantation technology in the world's top journal Nature in 2001. The repair system is to embed the microencapsulated repair monomer in the epoxy resin matrix containing the monomer polymerization catalyst. Due to the siphon effect, the repair monomer will flow to the crack area and meet the catalyst in the matrix, trigger monomer polymerization to repair the crack,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/50C08G18/38C08G18/76C08G18/66C08J3/24C08L75/08
CPCC08G18/4825C08G18/3848C08G18/482C08G18/5024C08G18/6666C08G18/7614C08J3/24C08J2375/08
Inventor 傅佳骏徐建华曹爱英
Owner NANJING UNIV OF SCI & TECH
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