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Lock type self-repairing polymer, preparation method and application thereof

A self-healing, polymer technology, which is applied in the field of lock-type self-healing polymers and its preparation, can solve the problems of cumbersome synthesis methods, and achieve the effects of simple repair methods, increased polymerization flexibility, and high repair efficiency

Active Publication Date: 2020-03-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages and deficiencies of existing self-healing materials that other groups need to be introduced and the synthesis method is cumbersome, and provide a lock-type self-healing polymer. The lock-type self-healing polymer does not Need to introduce other groups to achieve self-healing, and the repairing efficiency is high

Method used

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  • Lock type self-repairing polymer, preparation method and application thereof
  • Lock type self-repairing polymer, preparation method and application thereof
  • Lock type self-repairing polymer, preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0038] A lock-type self-healing polymer obtained by polymerization of methyl methacrylate (PMMA) and butyl acrylate (BA). The name of the polymer is PMMA-co-PBA.

[0039] The preparation method of PMMA-co-PBA comprises the following steps:

[0040] Dissolve 5.05g MMA, 4.30g BA (molar mass ratio is 6:4) and 0.0936g BPO in 5mL toluene and react in an oil bath at 120°C for 12h. After the reaction is completed, add a certain amount of 5mL toluene, and then add a large amount of The product was precipitated by isopropanol, then filtered with suction, washed with isopropanol, and dried in an oven at 60°C to obtain PMMA-co-PBA.

Embodiment 2

[0042] A lock-type self-healing polymer obtained by polymerization of methyl methacrylate (PMMA) and butyl acrylate (BA). The name of the polymer is PMMA-co-PBA.

[0043] The preparation method of PMMA-co-PBA comprises the following steps:

[0044] Dissolve 5.05g MMA, 4.30g BA (molar mass ratio is 6:4) and 0.0936g BPO in 5mL toluene and react in an oil bath at 100°C for 12h. After the reaction is completed, add a certain amount of 5mL toluene, and then add a large amount of The product was precipitated by isopropanol, then filtered with suction, washed with isopropanol, and dried in an oven at 60°C to obtain PMMA-co-PBA.

Embodiment 3

[0046] A lock-type self-healing polymer obtained by polymerization of methyl methacrylate (PMMA) and butyl acrylate (BA). The name of the polymer is PMMA-co-PBA.

[0047] The preparation method of PMMA-co-PBA comprises the following steps:

[0048] Dissolve 5.05g MMA, 4.30g BA (molar mass ratio is 6:4) and 0.0936g BPO in 5mL toluene and react in an oil bath at 120°C for 8h. After the reaction is completed, add a certain amount of 5mL toluene, and then add a large amount of The product was precipitated by isopropanol, then filtered with suction, washed with isopropanol, and dried in an oven at 60°C to obtain PMMA-co-PBA.

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Abstract

The invention discloses a lock type self-repairing polymer, a preparation method and application thereof. The lock type self-repairing polymer is obtained by polymerization of a hard segment monomer and a soft segment monomer, and the hard segment monomer and the soft segment monomer are both acrylate monomers. The preparation method of the lock type self-repairing polymer includes the steps of: dissolving the hard segment monomer, the soft segment monomer and an initiator in a solvent, carrying out polymerization reaction, and then adding a precipitant to obtain a precipitate, i.e. the lock type self-repairing polymer. According to the invention, the lock type self-repairing polymer is synthesized by random copolymerization, and the softness and interlocking mode of the chain segments canbe effectively adjusted by adjusting the proportion and variety of the monomers; branched chains on a polymer molecular chain are in space-filling interlocking to form certain riveting force, self-repairing can be achieved without introducing other groups, and the mechanical strength of the material is improved, the repairing method is simple, and the repairing efficiency is high. The preparationmethod has the characteristics of simplicity, easy purification and high yield.

Description

technical field [0001] The invention relates to the technical field of self-healing materials, and more specifically, to a lock-type self-healing polymer and its preparation method and application. Background technique [0002] During the use of materials, due to the influence of environmental factors such as heat, force and light, it is difficult to avoid damage in the form of cracks and defects inside or on the surface of the material, which will reduce the performance of the material and shorten its service life. The traditional repair methods are usually resin injection, adhesive patching and other technologies, but such technologies are difficult to repair the internal damage of the material, and cannot meet the repair requirements of the material. [0003] In recent years, related research on self-healing materials has attracted the attention of society and scientific research circles. This type of material has the ability to repair the micro-cracks of the material, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18
CPCC08F220/14
Inventor 洪浩群郭权南肖睿靖
Owner GUANGDONG UNIV OF TECH
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