Self-repairing material and preparation method and application thereof

A self-healing material, a technology of polytetrafluoroethylene, applied in the field of self-healing materials and their preparation, can solve the problems of inability to meet the environmental protection and service life of users, poor antifouling effect of algae, short use time, etc., and achieve excellent super-hydrophobicity. Super oleophobic properties, inhibiting biological adhesion, and preventing rapid aging effects

Inactive Publication Date: 2018-08-14
李瑞萱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] So far, the anti-biological pollution is mainly through the coating of tin or copper-containing coatings, so that these toxic metals slowly release toxicity, so as to achieve the purpose of killing biological pollution; however, the toxic substances contained in these coatings will eventually follow the biological chain into the body
At present, although silicone coatings are widely used, they still have certain limitations, such as: poor antifouling effect on algae, short service life, etc. Therefore, they cannot meet the needs of users for environmental protection and service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] S1. Provide a porous polytetrafluoroethylene film and a perfluoropolymer, and the mass ratio of the perfluoropolymer to the polytetrafluoroethylene film is 0.2wt%;

[0033] S2. Cleaning: ultrasonically clean the polytetrafluoroethylene film with a pore size of 0.1-1.5 microns and a porosity greater than 82% with acetone, then rinse it with deionized water, and dry it in vacuum at room temperature for 4 hours;

[0034] S3. Plasma treatment modified the cleaned polytetrafluoroethylene film, and placed the polytetrafluoroethylene film in a normal temperature plasma device for processing, the atmosphere was air, the radio frequency power was 140W, and the processing time was 5 minutes;

[0035] S4. Vacuum impregnation: heat and melt perfluoroethylene propylene in a fully enclosed container to obtain a molten solution of perfluoroethylene propylene, impregnate the modified polytetrafluoroethylene film into the molten solution of perfluoroethylene propylene, and vacuumize Dip...

Embodiment 2

[0041] S1. Provide a porous polytetrafluoroethylene film and a perfluoropolymer, and the mass ratio of the perfluoropolymer to the polytetrafluoroethylene film is 0.4wt%;

[0042] S2. Cleaning: ultrasonically clean the polytetrafluoroethylene film with a pore size of 0.1-1.5 microns and a porosity greater than 82% with acetone, then rinse it with deionized water, and dry it in vacuum at room temperature for 6 hours;

[0043] S3. Plasma treatment modified the cleaned polytetrafluoroethylene film, and placed the polytetrafluoroethylene film in a normal temperature plasma device for processing, the atmosphere was air, the radio frequency power was 20W, and the processing time was 10 minutes;

[0044] S4. Vacuum impregnation: heat and melt perfluorooctane sulfonic acid in a fully enclosed container to obtain a molten solution of perfluorooctane sulfonic acid, and impregnate the modified polytetrafluoroethylene film into perfluorooctane sulfonic acid molten liquid, vacuum impregnat...

Embodiment 3

[0050] S1. Provide a porous polytetrafluoroethylene film and a perfluoropolymer, and the mass ratio of the perfluoropolymer to the polytetrafluoroethylene film is 0.15wt%;

[0051] S2. Cleaning: ultrasonically clean the polytetrafluoroethylene film with a pore size of 0.1-1.5 microns and a porosity greater than 82% with acetone, then rinse it with deionized water, and dry it in vacuum at room temperature for 5 hours;

[0052] S3. Plasma treatment modified the cleaned polytetrafluoroethylene film, and placed the polytetrafluoroethylene film in room temperature plasma equipment for processing, the atmosphere was air, the radio frequency power was 50W, and the processing time was 7 minutes;

[0053] S4. Vacuum impregnation: heat and melt perfluorooctanoic acid in a fully enclosed container to obtain a molten solution of perfluorooctanoic acid, impregnate the modified polytetrafluoroethylene film into the molten solution of perfluorooctanoic acid, and vacuum impregnate for 14 minut...

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Abstract

The invention discloses a self-repairing material and a preparation method and application thereof. The self-repairing material comprises lacunose teflon film, holes in the teflon film are filled withperfluocarbon polymer, plasma processing is carried out on the teflon film for modification, and the perfluocarbon polymer accounts for more than 0.1 wt% of mass proportion of the teflon film. The preparation method comprises the steps of washing, drying after washing, the plasma processing for modification and vacuum impregnation, wherein the teflon film is washed with a washing agent for ultrasonic cleaning; the modified teflon film is impregnated in a melting liquid of the perfluocarbon polymer for impregnation; a solvent is used for removing residual perfluocarbon polymer remaining on thesurface of the teflon film, and storage at an indoor temperature is performed to obtain the self-repairing material. The contact angle between the self-repairing material and a liquid is greater than98 degrees, that is, the surface of the material is below 25 Mn / m, and the self-repairing material has antifouling and water-proof functions and has properties of good adhesion, easy coating, corrosion resistance, convenient processing, aging resistance, long-acting slow release, and environment protection.

Description

technical field [0001] The invention relates to the field of environmental protection materials, in particular to a self-repairing material and its preparation method and application. Background technique [0002] So far, the anti-biological pollution is mainly through the coating of tin or copper-containing coatings, so that these toxic metals slowly release toxicity, so as to achieve the purpose of killing biological pollution; however, the toxic substances contained in these coatings will eventually follow the biological chain into the human body. At present, although silicone coatings are widely used, they still have certain limitations, such as poor antifouling effect on algae and short service life. Therefore, they cannot meet the needs of users for environmental protection and service life. Contents of the invention [0003] In view of this, the present invention provides a self-repairing material, which has strong anti-fouling and waterproof functions, and also ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C08J9/40C08J5/18C08L27/18C08L27/12
CPCC08J5/18C08J9/40C08J9/42C08J2327/18C08J2427/12
Inventor 李瑞萱
Owner 李瑞萱
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