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Azide-group-containing super-hydrophobic anticorrosion material preparation method

A super-hydrophobic and anti-corrosion technology, which is applied in pigmented coatings, paper coatings, fiber raw material treatment, etc., can solve the problems of easy destruction of group azide groups, limited applicability of modified materials, and poor corrosion resistance, etc., to achieve The effect of good process control, simple and efficient preparation method, and low equipment requirements

Active Publication Date: 2019-01-04
JIANGNAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the existing invention, a similar superhydrophobic material is made by using azide-based monomers, fluorine-containing compounds and carbon nanotubes, but the material has poor corrosion resistance under alkaline conditions, and the invention uses heat-promoted In the polymerization method, the group azide group is easily destroyed, which not only reduces the bonding performance of the material, but also has the risk of explosion, which greatly limits the applicability of the modified material. Therefore, an efficient synthesis under mild conditions can be acid-resistant Alkali-resistant and corrosion-resistant azide-based superhydrophobic materials have great application prospects

Method used

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Examples

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Effect test

Embodiment 1

[0023] According to the mass percentage of 0.3% initiator, 5% eosin Y, 20% azide monomer, 70% fluorine-containing monomer, 3% organic amine, and 1.7% nano-silica, add the above substances to the reaction that has removed oxygen In the reactor, after stirring for 10 hours under the irradiation of 7W blue LED light, pour the contents of the reactor into n-hexane, the polymer material will be precipitated, the azide preservation rate is 100%, and the reaction yield is 70%. Material molecular weight distribution 1.30.

[0024] Dissolve the material in dichloromethane and apply it on the paper, irradiate and cure it under a light curing lamp for 5 minutes, and the surface of the paper is covered with a layer of super-hydrophobic and anti-corrosion material. Test the contact angle of the modified paper. In the case of no acid and alkali corrosion, the contact angle is 141°, the acid solution with pH=1 corrodes 140° after 24 hours, and 138° after 72 hours; the alkali solution with pH...

Embodiment 2

[0026] According to the mass percentage, the initiator is 0.3%, the eosin Y is 2%, the azide monomer is 20%, the fluorine-containing monomer is 69.7%, the organic amine is 5%, and the nano silicon dioxide is 3%. Add the above substances into the reactor that has been deoxygenated, and stir for 10 hours under the irradiation of 7W blue LED light, then pour the contents of the reactor into n-hexane, and the polymer will be precipitated. The azide preservation rate was 100%, the reaction yield was 85%, and the molecular weight distribution of the material was 1.41.

[0027] Dissolve the material in dichloromethane and apply it on paper, and cure it under the light of a light curing lamp for 5 minutes, and the surface of the paper will be covered with a layer of superhydrophobic anti-corrosion material. Test the contact angle of the modified paper, in the case of no acid and alkali corrosion, the contact angle is 144°, the acid solution with pH=1 corrodes 144° after 24 hours, and ...

Embodiment 3

[0029] According to the mass percent, the initiator is 0.5%, the eosin Y is 3%, the azide monomer is 25%, the fluorine-containing monomer is 65%, the organic amine is 4%, and the nano silicon dioxide is 2.5%. Add the above substances into the reactor that has been deoxygenated, and stir for 10 hours under the irradiation of 7W blue LED light, then pour the contents of the reactor into n-hexane, and the polymer will be precipitated. The azide preservation rate was 100%, the reaction yield was 80%, and the molecular weight distribution of the material was 1.36.

[0030] Dissolve the material in dichloromethane and apply it on paper, cure it under the light of a light curing lamp for 5 minutes, apply the material on the paper, and the surface of the paper is covered with a layer of superhydrophobic anti-corrosion material. Test the contact angle of the modified paper. In the case of no acid and alkali corrosion, the contact angle is 167°, the acid solution with pH=1 corrodes 164°...

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Abstract

The invention belongs to the technical field of chemical materials and discloses an azide-group-containing super-hydrophobic anticorrosion material preparation method. The super-hydrophobic anticorrosion material preparation method includes: adding, by mass, an initiator, 2-5 parts of a catalyst, 20-100 parts of an azide monomer, 60-200 parts of a fluorine-containing monomer, 3-5 parts of an auxiliary catalyst and 1-3 parts of nano silicon dioxide into a reactor, wherein the mass percent of the initiator accounts for 0.3-1% of the total mass percent of the raw materials; vacuumizing, and stirring for 10h under a blue light; pouring reaction liquid into normal hexane to obtain separated solid, dissolving the solid into a solvent to prepare a membrane, and curing for 10min under a photo-curing light to obtain a modified material which has advantages of super-hydrophobicity, corrosion resistance and the like.

Description

technical field [0001] The invention relates to a preparation method of an azide group-containing superhydrophobic anticorrosion material, which belongs to the technical field of polymer materials. Background technique [0002] Generally, environmental media have various effects on materials, and many of them can cause damage to materials. Among them, chemical corrosion is extremely common in industry and life. With the rapid development of fluorine-containing materials, fluorine-containing polymers, especially Research on fluorocarbon polymers and fluorine-containing silicon polymers is increasing. Fluoropolymers usually have good oil repellency, water repellency, heat resistance, high and low temperature resistance, chemical resistance, and weather resistance. Therefore, in recent years, it has been widely used in various fields of construction, chemical industry, electrical and electronic industry, machinery industry, aerospace industry, and household products, and pract...

Claims

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Application Information

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IPC IPC(8): C08F220/24C08F220/34C08F2/44C08F2/48D21H19/60D21H19/40D21H21/38D21H21/14
CPCC08F2/44C08F2/48C08F220/24D21H19/40D21H19/60D21H21/14D21H21/38C08F220/34
Inventor 钮腾飞王聃轲张恒李朋其
Owner JIANGNAN UNIV
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