Preparation method of organosilicon aluminum powder corrosion inhibitor, organosilicon aluminum powder corrosion inhibitor and application thereof

An organosilicon and corrosion inhibitor technology, used in coatings, anti-corrosion coatings, etc., can solve the problems of large usage, atmospheric corrosion, and overall safety of equipment affecting the service life of metals, and achieves convenient operation, simple equipment conditions, and improved resistance to corrosion. Effects of Atmospheric Corrosion Protection Properties

Active Publication Date: 2018-05-15
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Power plant boiler tube steel T91 / P91 is widely used in the superheater and reheater components of supercritical boilers and ultra-supercritical boilers. In the daily operation of power plant boilers, it is extremely vulnerable to atmospheric corrosion, which affects the service of metals. Lifetime and overall safety of equipment
At present, there are no quality technical specifications and construction process standards related to coating anticorrosion to guide how to protect T91 / P91 steel for power plant boiler tubes and slow down the impact of atmospheric corrosion

Method used

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  • Preparation method of organosilicon aluminum powder corrosion inhibitor, organosilicon aluminum powder corrosion inhibitor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of the organosilicon aluminum powder corrosion inhibitor of the present invention comprises the following steps:

[0036] (1) Add butyl acetate cellulose to the container, then add dichloropropane, ethyl acetate and ethylene glycol in sequence, the mass ratio of butyl acetate cellulose, dichloropropane, ethyl acetate and ethylene glycol is 28:17:42:13, stirred evenly at room temperature, and filtered to obtain the cellulose acetate precursor for use.

[0037] (2) Add silicone-modified acrylic resin, hydroxyacrylic resin and the cellulose acetate precursor obtained in step (1) into the container, stir until evenly mixed, then add adhesion promoter and nano-montmorillonite, the adhesion The accelerator is specifically Carity-130 adhesion promoter, but it is not limited thereto. Other adhesion promoters can also be used. Mix evenly under 750r / m high-speed stirring, and then add aluminum powder slurry, which is made of dichloro Soak the aluminum powder i...

Embodiment 2

[0044] A preparation method of the organosilicon aluminum powder corrosion inhibitor of the present invention comprises the following steps:

[0045] (1) Add butyl acetate cellulose to the container, then add dichloropropane, ethyl acetate, ethylene glycol in sequence, the mass ratio of butyl acetate cellulose, dichloropropane, ethyl acetate and ethylene glycol is 26:19:43:12, stirred evenly at room temperature, and filtered to obtain the cellulose acetate precursor for use.

[0046] (2) Add silicone-modified acrylic resin, hydroxyacrylic resin and the cellulose acetate precursor obtained in step (1) into the container, stir until evenly mixed, then add Carity-130 adhesion promoter and nano-montmorillonite, Stir at a high speed of 720r / m until the mixture is uniform, then add the aluminum powder slurry obtained by soaking aluminum powder in dichloropropane, stir at a low speed of 200r / m, and finally add butyl acetate to adjust the viscosity of the paint (the viscosity is withi...

Embodiment 3

[0053] A preparation method of the organosilicon aluminum powder corrosion inhibitor of the present invention comprises the following steps:

[0054] (1) Add butyl acetate cellulose to the container, then add dichloropropane, ethyl acetate and ethylene glycol in sequence, the mass ratio of butyl acetate cellulose, dichloropropane, ethyl acetate and ethylene glycol is 24:17:44:15, stirred evenly at room temperature, and filtered to obtain the cellulose acetate precursor for use.

[0055] (2) Add silicone-modified acrylic resin, hydroxyacrylic resin and the cellulose acetate precursor obtained in step (1) into the container, stir until evenly mixed, then add Carity-130 adhesion promoter and nano-montmorillonite, Stir at 650r / m until evenly mixed, then add the aluminum powder slurry obtained by soaking aluminum powder in dichloropropane, stir at 140r / m, and finally add butyl acetate to adjust the viscosity of the paint (the viscosity is within 16-20 centistokes), Filter to obtai...

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Abstract

The invention discloses an organosilicon-aluminum powder corrosion inhibitor preparation method, an organosilicon-aluminum powder corrosion inhibitor and application of the organosilicon-aluminum powder corrosion inhibitor. The preparation method includes (1), preparing a cellulose acetate precursor from cellulose acetate butyrate, propylene dichloride, acetic ether and ethylene glycol; (2), preparing organosilicon heat-resistant aluminum paint from organosilicon-modified acrylic resin, hydroxy acrylic resin, the cellulose acetate precursor, an adhesion promoter, nano-montmorillonite, aluminum paste and butyl acetate; (3), mixing the organosilicon heat-resistant aluminum paint with a curing agent so as to obtain the organosilicon-aluminum powder corrosion inhibitor. The organosilicon-aluminum powder corrosion inhibitor is high in operating temperature and good in anticorrosion effect and can be particularly applied to atmospheric corrosion protection of steel 91 / P91 of power station boiler pipes.

Description

technical field [0001] The invention relates to the protection field of steel for power plant boiler tubes, in particular to a preparation method of an organosilicon-aluminum powder corrosion inhibitor, the organosilicon-aluminum powder corrosion inhibitor and its application in atmospheric corrosion protection of power plant boiler tube steel. Background technique [0002] In order to meet the needs of the national economy for electricity and protect the natural environment, newly constructed coal-fired thermal power plants are developing toward high-capacity, supercritical and ultra-supercritical high-parameter units that improve operating efficiency and reduce costs. After decades of development, supercritical and ultra-supercritical power generation technologies have become relatively mature advanced technologies, which are no different from subcritical units in terms of reliability, availability, and operational flexibility, and have accumulated more commercial Operatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/14C09D143/04C09D101/14C09D7/61C09D7/62C09D5/10
CPCC08L2201/08C08L2205/03C09D5/103C09D7/61C09D7/62C09D133/14C08L43/04C08L1/14C08K13/06C08K9/04C08K3/346C08K2003/0812
Inventor 冯超彭碧草王军龙毅
Owner STATE GRID CORP OF CHINA
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