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A method for preparing self-healing materials based on aza-Michael addition

A self-healing material, a technology of diazabicyclo, which is applied in the field of self-healing material preparation based on aza-Michael addition, can solve problems such as damage and performance degradation, and achieve high reaction efficiency, improved service life, and reaction environment. friendly effect

Active Publication Date: 2021-03-23
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polymers and their composite materials are widely used in the field of electronic packaging due to their excellent performance. With the increase in power and integration of semiconductor devices, polymer materials will inevitably produce a certain degree of damage, leading to performance degradation

Method used

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  • A method for preparing self-healing materials based on aza-Michael addition
  • A method for preparing self-healing materials based on aza-Michael addition

Examples

Experimental program
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Effect test

Embodiment 1

[0024] At 80°C, formulate the components according to Example 1 in Table 1, mix 4,4'-dithiodianiline, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate at a low speed For 10 minutes, a homogeneous mixture was obtained. Maleic acid was then added and mixed uniformly by stirring at a low speed for 10 minutes at 150° C. to prepare a uniform prepolymer. Finally, put the prepared prepolymer into an oven at 150° C. for 10 hours to cure, and then the self-healing material of the present invention can be prepared.

Embodiment 2

[0026] At 80°C, formulate the components according to Example 2 in Table 1, mix 4,4'-dithiodianiline, polyethylene glycol 400 diacrylate and ditrimethylolpropane acrylate at low speed for 10 minutes , to obtain a homogeneous mixture. Then citric acid and benzoic acid were added and mixed uniformly by stirring at a low speed for 10 minutes at 150° C. to prepare a uniform prepolymer. Finally, put the prepared prepolymer into an oven at 150° C. for 10 hours to cure, and then the self-healing material of the present invention can be prepared.

Embodiment 3

[0028] At 80°C, formulate the components according to Example 3 in Table 1, mix 4,4'-dithiodianiline, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate at a low speed For 10 minutes, a homogeneous mixture was obtained. Then triethylenediamine and 1,8-diazabicycloundec-7-ene were added, and the mixture was uniformly mixed by stirring at a low speed for 10 minutes at 150° C. to prepare a uniform prepolymer. Finally, put the prepared prepolymer into an oven at 150° C. for 10 hours to cure, and then the self-healing material of the present invention can be prepared.

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Abstract

The invention discloses a method for preparing a self-repairing material based on aza-Michael addition, which belongs to the technical field of polymer material preparation. The self-healing material is composed of the following components by weight percentage: 50-90% of acrylate monomers, 5-50% of amine monomers, and 1-5% of catalysts; the specific steps of the preparation method: firstly, the amines Mix the monomer and acrylate monomer at 80°C at low speed for 10-30min to obtain a uniform mixture, then add acidic catalyst or basic catalyst or ionic liquid catalyst into the mixture, and stir at 150°C at low speed for 10-30min Make the mixture uniform to obtain a uniform prepolymer, and finally put the prepared prepolymer into an oven at 120-180° C. to cure for 6-24 hours to obtain a self-repairing material. The self-repairing material of the present invention has better tensile strength and repairing performance, can effectively improve the service life of the material, and is especially suitable for the field of electronic packaging requiring high reliability.

Description

Technical field: [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a method for preparing a self-repairing material based on aza-Michael addition. The self-repairing material obtained by the preparation method is especially suitable for the field of electronic packaging requiring high reliability. Background technique: [0002] Self-healing materials are a new type of material that can repair itself when an object is damaged. The significance of this technology lies in its ability to repair physical damage autonomously, thereby prolonging the service life and reducing maintenance costs, which can avoid the waste of resources and funds. Self-healing materials are used in a wide range of applications, including military equipment, electronic products, automobiles, aircraft, building materials and other fields. At present, common dynamic covalent chemistry includes olefin metathesis reaction, Diels-Alder reaction,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/24C08F222/14C08F220/32C08F283/00C08F222/02C08F226/06C08L35/02C08L51/08
CPCC08F222/10C08F283/008C08J3/24C08J2351/08C08J2335/02C08F222/1025C08F222/102C08F222/103C08F226/06C08F222/02C08F220/32
Inventor 高宏吴波金玲夏友谊
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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