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Fluorine-containing coating

A kind of coating, Yingdan technology, used in anti-corrosion coatings, fire-retardant coatings, coatings and other directions, can solve the problems of easy powdering, adhesion, poor storage performance, poor weather resistance, peeling, etc., to achieve good high temperature resistance, excellent resistance to salt water. , The effect of good anti-corrosion performance

Active Publication Date: 2022-05-06
常州市大使涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are polar groups in the molecular chain segment of high-chlorinated polyethylene, and the intermolecular force is relatively large. Compared with traditional anti-corrosion coatings such as chlorosulfonated polyethylene, the paint film also has poor flexibility and is easy to pulverize. Defects such as brittle cracking and peeling when subjected to external force
Usually, epoxy resin is used to modify HCPE coating or DS resin is used as modified resin, but this type of modification method will lead to a decrease in the performance of the paint film, such as poor adhesion, storage performance, weather resistance, etc.
Even if it is modified by adding a plasticizer, the improvement of the coating performance is not obvious, and when the amount is too much, it is easy to make the paint film sticky and reduce the hardness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of secondary co-modified polyaniline:

[0034] (1) Add 2g montmorillonite to 2mol / L, 200mL nitric acid aqueous solution, ultrasonically disperse at 22KHz for 0.5h, add 10mL aniline, continue ultrasonically dispersing for 2h, add 25g ammonium persulfate at room temperature, mix and stir fully After the solid precipitate was obtained, it was left to react at room temperature for 24 hours, then washed with water until neutral, then washed with ethanol until the filtrate was colorless, filtered with suction, and dried to obtain a co-modified polyaniline / montmorillonite once;

[0035] (2) Place 1 g of the primary co-modified polyaniline / montmorillonite prepared in step (1) in 0.1mol / L, 100mL ammonia solution, stir well and let stand for 1h, then wash with water until neutral, then wash with ethanol Until the filtrate is colorless, it is suction filtered and dried to obtain polyaniline / montmorillonite;

[0036] (3) Place 1 g of polyaniline / montmorillon...

Embodiment 2

[0047] The preparation method of secondary co-modified polyaniline:

[0048] (1) Add 3g of montmorillonite into 2mol / L, 200mL nitric acid aqueous solution, ultrasonically disperse at a frequency of 22KHz for 1h, add 10mL of aniline, continue ultrasonically dispersing for 3h, add 25g of ammonium persulfate at room temperature, mix and stir fully to obtain After solid precipitation, stand at room temperature for 36 hours, then wash with water until neutral, then wash with ethanol until the filtrate is colorless, filter with suction, and dry to obtain a co-modified polyaniline / montmorillonite once;

[0049] (2) Place 1.5 g of the primary co-modified polyaniline / montmorillonite prepared in step (1) in 0.1mol / L, 100mL ammonia solution, stir well and let stand for 2 hours, then wash with water until neutral, and then ethanol Wash until the filtrate is colorless, filter with suction, and dry to obtain polyaniline / montmorillonite;

[0050](3) Place 1.5g of polyaniline / montmorillonite...

Embodiment 3

[0061] The preparation method of secondary co-modified polyaniline:

[0062] (1) Add 4g montmorillonite to 2mol / L, 200mL nitric acid aqueous solution, ultrasonically disperse at 22KHz for 1h, add 10mL aniline, continue ultrasonically dispersing for 4h, then add 25g ammonium persulfate at room temperature, mix and stir fully to obtain After solid precipitation, stand at room temperature for 48 hours, then wash with water until neutral, then wash with ethanol until the filtrate is colorless, filter with suction, and dry to obtain a co-modified polyaniline / montmorillonite once;

[0063] (2) Place 2 g of the primary co-modified polyaniline / montmorillonite prepared in step (1) in 0.1mol / L, 100mL ammonia solution, stir well and let it stand for 3 hours, then wash with water until neutral, then wash with ethanol Until the filtrate is colorless, it is suction filtered and dried to obtain polyaniline / montmorillonite;

[0064] (3) Put 2 g of polyaniline / montmorillonite prepared in step...

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Abstract

The present invention relates to a fluorine-containing fluoride coating, which comprises the following raw materials in parts by weight: 100 parts of vinyl resin, 10-20 parts of pigment and filler of fluoride composition, 0.5-3 parts of secondary co-modified polyaniline / montmorillonite, 30-50 parts of organic solvent, 0.2-0.4 part of epichlorohydrin, and 0.1-0.3 part of toughening agent; wherein the secondary co-modified polyaniline / montmorillonite is through acid-modified montmorillonite, which is beneficial to aniline Intercalation into the sheet of montmorillonite, synthesizing primary acid co-modified polyaniline / montmorillonite, doping with ammonia hydrolysis and then performing secondary acid doping to obtain polyaniline / montmorillonite with better conductivity ; The coating of the present invention has excellent corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of anticorrosion coatings, in particular to a fluorine-containing coating. Background technique [0002] Highly chlorinated polyethylene (that is, chlorinated polyethylene with a chlorine content of 60%-70%, referred to as HCPE) is obtained from polyethylene (PE) through deep chlorination. Its molecular chain is saturated, its chlorine content is high, and its comprehensive performance is excellent. It is an ideal film-forming substance for anti-corrosion coatings. [0003] The development of HCPE resin began in the 1960s. HCPE resin has good solubility, and has excellent weather resistance, ozone resistance, heat aging resistance, flame retardancy, chemical resistance, and oil resistance. HCPE is a high molecular polymer with excellent comprehensive properties, and its excellent chemical and physical properties are unmatched by other materials. It is possible to replace the functional materials of epoxy r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D123/28C09D127/06C09D5/08C09D7/62C09D7/65C09D7/63C09D7/45
CPCC09D123/286C09D5/084C09D5/18C09D7/62C09D7/65C09D7/63C09D7/45C09D7/70C08L2201/08C08L2205/035C08K2003/2265C08K2003/2241C08L27/06C08L79/02C08L91/06C08K13/06C08K9/08C08K9/04C08K9/02C08K7/00C08K3/346C08K3/22C08K5/521
Inventor 戴仁兴顾秋琴
Owner 常州市大使涂料有限公司
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