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Polyacid metal surface treating agent and preparation method thereof

A technology of metal surface treatment and sodium fluorosilicate, which is applied in the direction of metal material coating technology, can solve the problems such as the anti-corrosion performance of copolymers that have not been discussed, and achieve the effects of good protection effect, strong resistance ability and increased contact angle

Inactive Publication Date: 2015-10-21
HEFEI ZHENGHAO MECHANICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the doping effect of the carboxyl group on the acrylate polymer chain to aniline, an acrylate-aniline copolymer was synthesized by in-situ polymerization; however, the research mainly focused on the effect of aniline content on the dielectric properties of the copolymer, and did not discuss the properties of the copolymer. Anti-corrosion performance
At present, there are few reports on the preparation of anti-corrosion materials by the copolymerization of acrylate and aniline.

Method used

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Experimental program
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Embodiment 1

[0025] A kind of multi-acid metal surface treatment agent is characterized in that it is made up of the raw material of following weight part:

[0026] Sodium fluorosilicate 1, sp-80 1.8, aniline 0.5, potassium persulfate 0.38, butyl acrylate 50, sodium bicarbonate 0.16, bis(γ-triethoxysilylpropyl) tetrasulfide 30, 75% Ethanol 110, 30% hydrogen peroxide 0.3, deionized water 130, fluorotitanic acid 6, 3-nitrophthalic acid 0.5, dithiosalicylic acid 3, octadecyl methacrylate 2, alkyl succinic acid 4. Sodium thiosulfate 0.2, Trimethylolpropane 0.2.

[0027] A preparation method of polyacid metal surface treatment agent, comprising the following steps:

[0028] (1) Take 40% of the weight of the above potassium persulfate and 90% of the weight of sp-80, mix them with sodium bicarbonate, add 70% of the weight of deionized water, and stir evenly to obtain an initiator emulsion;

[0029] (2) Take 60% of the weight of the remaining deionized water, add dithiosalicylic acid and hydroca...

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Abstract

The invention discloses a polyacid metal surface treating agent. The surfaces of acrylate liquid cement particles contain a mass of carboxyls; aniline is added into acrylate liquid cement; aniline monomers are firstly diffused into a micelle and then are doped with the carboxyls, and after that, under the action of an oxidizing agent, the aniline performs polymerization reaction on the surfaces of latex particles; the contact angle of a polyaniline coating relative to water is increased, the adhesion and water resistance are improved, the coating can enable a metal surface to be passivated and protected by an electron transfer action and a redox action, as for fluo titanic acid subjected to silanizing modification, an introduced inorganic component Ti4<+> forms TiO2 particles in a heating curing process, the TiO2 particles evenly fill the gaps of a silane film, the whole film layer is more even and compact, micro-electrochemical reaction on the surface of the film layer can be effectively inhibited, and thus the corrosion resistance is greatly improved.

Description

technical field [0001] The invention relates to a treatment agent, in particular to a polyacid metal surface treatment agent and a preparation method thereof. Background technique [0002] Polyaniline is a kind of conductive polymer material with stable performance and environmental friendliness, and its oxidation-reduction potential is much higher than that of metal. Its coating can passivate the metal surface through electron transfer and redox in acidic or neutral medium. It has a protective effect and is a good material for metal anti-corrosion. However, polyaniline has strong molecular chain rigidity, is insoluble and infusible, and is difficult to process. It is usually used in combination with other film-forming substances. Acrylate resin is a commonly used film-forming substance, which has good film-forming properties and adhesion. [0003] At present, there are three ways to make polyaniline and acrylic resin composite films: polyaniline coating is coated with acry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34
Inventor 郑之松
Owner HEFEI ZHENGHAO MECHANICAL TECH
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