Self-repairing polymer material and preparation method thereof

A polymer material and self-healing technology, which is applied in the field of self-healing polymers and their synthesis, can solve the problems of uneven mixing performance, failure of self-healing, etc., and achieve the effect of simple process, easy operation, and good tensile properties

Active Publication Date: 2017-06-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The technical problem solved by the present invention is to provide a self-healing polymer material and its preparation method to overcome the defects of the prior art, such as self-healing at room temperature, and the introduction of an external repairing agent causing a decrease in uneven mixing performance Wait

Method used

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

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Embodiment Construction

[0025] A self-healing polymer material of the present invention adopts the copolymerization of sulfur-containing monomers containing unsaturated double bonds and unsaturated olefins, dissolves the polymers and adds metal salts, and metal cations form coordination bonds with sulfur elements. Bit bond force to repair damage.

[0026] in:

[0027] The polymer is selected from one or more groups of acrylic acid, methacrylic acid, styrene and corresponding sulfur-containing ethers, sulfones, and sulfoxides for copolymerization.

[0028] The polymer is selected from methacrylates and methacrylate sulfides, or acrylates and acrylic sulfides, or styryl and styryl sulfides, or a combination of styrene and phenylvinyl sulfoxide .

[0029] The metal salt is a metal salt containing nickel, palladium, ruthenium, magnesium and barium metal ions.

[0030] The polymer material and the metal salt are weighed according to a molar ratio of 1:1 to 1:4, dissolved in tetrahydrofuran and then add...

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Abstract

The invention discloses a self-repairing polymer material and a preparation method thereof. The self-repairing polymer material is prepared by copolymerizing an unsaturated double bond-containing sulfur-containing monomer and unsaturated alkene, a polymer is dissolved, metal salt is added, metal cations and sulfur element form a coordination bond, and by virtue of an acting force of the coordination bond, a damaged part is repaired. The preparation method comprises the following steps: 1, synthesizing the unsaturated double bond-containing sulfur-containing monomer; 2, adding the unsaturated double bond-containing sulfur-containing monomer, a comonomer and an initiator sequentially to produce a polymerized product; 3, precipitating, separating and drying the polymerized product, weighing the polymerized product, dissolving the polymerized product in tetrahydrofuran to obtain a polymer solution, weighing metal salt according to a molar ratio of the sulfur-containing monomer in the polymerized product to the metal salt of 1:1 to 1:4, dissolving in the tetrahydrofuran, dropwise adding a metal salt solution into the polymer solution, and stirring for more than 12h to obtain the self-repairing polymer material. The preparation method of the self-repairing polymer material is simple in process and easy to operate.

Description

technical field [0001] The invention relates to a self-healing polymer and its synthesis method, in particular to a metal-coordination-based sulfur-containing polymer and its preparation method; utilizing the coordination effect of the sulfur-containing polymer and metal to form a non-covalent bond , to complete self-healing. Background technique [0002] Polymer self-healing material is a new type of polymer material with high added value. Its self-healing mechanism is to repair damaged parts through non-covalent bond forces such as hydrogen bonds or metal coordination bonds. Introducing self-healing capabilities into materials makes them more adaptable, durable, and self-sustaining. [0003] The polymer self-healing material is a thermoplastic elastomer, which has better mechanical strength than general self-healing materials. This self-healing performance is repeatable, chemically stable, and the material itself has good processability. [0004] At this stage, accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/14C08F212/08C08F8/44
CPCC08F8/44C08F212/08C08F212/14
Inventor 张久洋刘帅
Owner SOUTHEAST UNIV
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