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Self-repairing polymer material and repairing method thereof

The technology of a polymer material and a repair method is applied in the field of preparation of self-repairable polymer materials, which can solve problems such as environmental pollution, and achieve the effects of avoiding environmental pollution, low production cost, and simple and easy preparation process.

Inactive Publication Date: 2015-06-24
上海仕天工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the self-healing material containing the repairing agent is that the repairing agent is uniformly dispersed, and the repairing agent that has not reacted and exposed the surface of the material is likely to cause environmental pollution and other problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 2g of 600nm carbon nanotubes to 100g of polyester powder for pre-mixing and kneading, blend with 900g of polyester, and shape the material into a product.

[0021] After the wound surface of the product exists, a 200mW laser beam is used to irradiate the wound site for 1 minute. After the photothermal conversion of carbon nanotubes, the polymer surface melts and self-heals.

Embodiment 2

[0023] Add 10g of 500nm graphene oxide to 100g of polypropylene powder for pre-mixing and kneading, then blend with 900g of polypropylene for processing, and form the material into a product. After the wounded surface of the product exists, a 300mW laser beam is used to irradiate the wounded part for 5 minutes. After the photothermal conversion of carbon nanotubes, the polymer surface melts and self-heals.

Embodiment 3

[0025] Add 20g of 100nm gold nanoparticles to 100g of polyamide powder for pre-mixing and kneading, then blend with 900g of polyamide for processing, and shape the material into a product. After the product has a wound surface, 800mW laser beam is used to irradiate the wound site for 10 minutes. After the photothermal conversion of carbon nanotubes, the polymer surface melts and self-heals.

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PUM

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Abstract

The invention discloses a self-repairing polymer material and a repairing method thereof. The self-repairing polymer material is characterized by being prepared from 0.2%-4% of functional nano-powder and the balance of a polymer; the repairing method of the self-repairing polymer material comprises the following steps: irradiating a wound surface with a moderate-strength laser beam for 1-10 minutes, and self-repairing and healing the polymer wound. The nano-powder with a solar-thermal conversion function is adopted; a restoration agent containing an unsaturated olefin monomer is not adopted, so that the environmental pollution is avoided; the resin can be repaired only by physical action; the problem that the product performance is reduced due to broken polymer molecular chain caused by high-strength laser is avoided; and the preparation process is simple and feasible; and the production cost is low.

Description

technical field [0001] The invention relates to a polymer material, in particular to a preparation method of a self-repairable polymer material. Background technique [0002] Polymer self-healing material is a kind of intelligent material that can repair itself when polymer products are damaged. It has attracted extensive attention in the fields of electronic products, automobiles, aircrafts, and building materials. Affected by external factors, polymer materials will inevitably have scratches, cracks, burrs and other defects during use, which will not only affect the appearance of the product, but also reduce the service life of the product. [0003] The self-healing materials currently include two major categories: thermoplastic materials and thermosetting materials, and most self-healing materials on the market use repairing agents—that is, unsaturated olefins and other substances. [0004] Invention patent CN 103665696 A also discloses a self-healing material containing...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08L23/12C08L77/00C08K7/24C08K3/04C08K3/08C08K3/30C08J3/28
Inventor 张仁欢石远勋蒋翀
Owner 上海仕天工程塑料有限公司
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