A kind of polyaniline-silane-nanometer ceramic composite surface treatment agent

A composite surface treatment and nano-ceramic technology, applied in coatings, anti-corrosion coatings, etc., can solve problems such as environmental hazards, high dependence, and weak physical bonding ability of film corrosion resistance, and achieve reduced metal corrosion and strong rigidity , good compactness effect

Active Publication Date: 2021-03-23
NANJING KERUN LUBRICANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this treatment method contains harmful heavy metal ions such as zinc and nickel and chemical components such as phosphorus, and produces a large amount of phosphating slag during production, causing potential harm to the environment.
As a technology that can replace the traditional phosphating treatment, there are known zirconium salt treatment methods and silane-zirconium salt composite treatment methods. This treatment method uses silane and zirconium fluoride composite treatment methods for surface treatment. However, this The film layer formed on the metal surface by such products is thinner than the traditional phosphating film layer, so the corrosion resistance of the film layer and the physical bonding ability with subsequent coatings are relatively weak
High dependence on metal surface pretreatment state and supporting electrophoretic paint

Method used

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  • A kind of polyaniline-silane-nanometer ceramic composite surface treatment agent
  • A kind of polyaniline-silane-nanometer ceramic composite surface treatment agent
  • A kind of polyaniline-silane-nanometer ceramic composite surface treatment agent

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Preparation of polyaniline-silane-nano ceramic composite surface treatment agent: the sulfonic acid group modified polyaniline (number average molecular weight is 20000), 200mg / L methoxyl modified polyaniline (number average molecular weight) that mass concentration is 500mg / L 10000), 400mg / L dispersed polyaniline nanoparticles (nano-scale polyaniline synthesized in gas phase, particle size is 15nm, PDI=0.1, number average molecular weight is 20000), 300mg / L fluorozirconic acid (calculated as zirconium) , 100 mg / L zirconyl nitrate (calculated as zirconium), 10 mg / L γ-aminopropyltrimethoxysilane, 10 mg / L alkyl glycoside and the remainder of deionized water were mixed evenly and stirred until the solution was clear and transparent, and polyaniline- Nano-ceramic composite surface treatment agent.

[0023] Use nitric acid aqueous solution to adjust the pH value of the composite surface treatment agent to 3.00±0.01, and use this composite surface treatment agent to soak the ...

Embodiment 2

[0042] Prepare polyaniline-silane-nano-ceramic composite surface treatment agent: the dispersive polyaniline nano-particle (being the nanoscale polyaniline of vapor phase synthesis, particle diameter is 15nm, PDI=0.1, number-average molecular weight is 40mg / L with mass concentration 20000), 10mg / L ethoxy-modified polyaniline (number-average molecular weight 8000), 100mg / L amino-modified polyaniline (number-average molecular weight 12000), 5mg / Lγ-aminopropylmethyldiethoxy Silane, 100 mg / L potassium fluozirconate (calculated as zirconium), 5 mg / L sodium lauryl sulfate and the remainder of deionized water were mixed evenly and stirred until the solution was clear and transparent to obtain a polyaniline-nano-ceramic composite surface treatment agent.

[0043]The prepared polyaniline-silane-nanometer ceramic composite surface treatment agent is adjusted to pH 4.20±0.01 with ammonia solution. Use this treatment solution to soak the metal sample after degreasing pretreatment and wash...

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Abstract

The invention discloses a polyaniline-silane-nano-ceramics composite surface treatment agent. Each liter of the composite surface treatment agent is composed of the following components: 100-1000 mg of water-soluble polyaniline, 100-1000 mg of dispersed polyaniline nano-particles, 10-50 mg of a silane coupling agent, a zirconium compound, 5 mg-10 mg of a surfactant, and the balance water, whereinthe zirconium has a mass concentration of 100 mg to 500 mg / L in terms of zirconium. By the use of the composite surface treatment agent, a film formed on the metal surface is thick, and the film has good compactness. Thereby, the corrosion resistance of the treated metal substrate can be improved, and the adhesiveness between the film formed in the subsequent coating process and the metal substrate can be good.

Description

technical field [0001] The invention relates to a polyaniline-silane-nanometer ceramic composite surface treatment agent, which belongs to the technical field of metal material surface treatment. Background technique [0002] Conductive polymer polyaniline has been extensively studied because of its readily available raw materials, easy preparation, and special electrochemical and conductive properties. However, due to the high rigidity of polyaniline itself, the solubility is poor, and it is only soluble in some organic solvents. In order to expand its application, by introducing sulfonic acid groups, acetic acid groups, fluorine atoms, chlorine atoms, methoxy groups and other groups on the benzene ring or nitrogen atom, by reducing the interaction of large π bonds between macromolecular chains, at the expense of Based on a part of the conductivity, its solubility in water is greatly improved. At the same time, these functional groups have very good compatibility with epo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D179/02C09D183/08C09D5/08C09D7/61
CPCC08L2205/025C08L2205/035C09D5/08C09D179/02C09D7/61C08L79/02C08L83/08C08K3/24
Inventor 叶磊付海罗黄海威徐旭王娟聂晓霖
Owner NANJING KERUN LUBRICANTS
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