CN114657546B - Anti-corrosion treatment process for railway track embedded part - Google Patents
Anti-corrosion treatment process for railway track embedded part Download PDFInfo
- Publication number
- CN114657546B CN114657546B CN202210361405.2A CN202210361405A CN114657546B CN 114657546 B CN114657546 B CN 114657546B CN 202210361405 A CN202210361405 A CN 202210361405A CN 114657546 B CN114657546 B CN 114657546B
- Authority
- CN
- China
- Prior art keywords
- solution
- embedded part
- passivation
- modified
- stirring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses an anti-corrosion treatment process for a railway track embedded part, which comprises 3 steps of alkali washing for removing oil, acid washing for removing rust and passivating, wherein modified titanium dioxide sol and epoxy resin are mixed to form a film layer with a three-dimensional network structure on the surface of a metal material, active groups in the modified titanium dioxide sol and the epoxy resin interact to generate firm water-resistant chemical bonds to form a net-shaped framework with a compact structure, and water molecules are prevented from penetrating through the film layer, so that the corrosion resistance of the metal material is improved, meanwhile, the dispersion performance of nano silicon dioxide in the modified titanium dioxide sol and the epoxy resin is improved by modifying the nano silicon dioxide, and partial modified nano silicon dioxide is uniformly filled in pores with the three-dimensional network structure, so that the film layer is more compact, the permeation of a corrosion medium to the surface of the metal material through the film layer is prevented, and the corrosion resistance of the metal material is further improved.
Description
Technical Field
The invention relates to the technical field of railway track part treatment, in particular to an anti-corrosion treatment process for a railway track embedded part.
Background
The embedded parts are members which are pre-installed (buried) in hidden projects, and the structural parts arranged during the structure pouring are used for overlapping when the superstructure is built so as to be beneficial to the installation and fixation of the foundation of external engineering equipment, and the embedded parts are mostly made of metal, for example: steel bars or cast iron, where embedments are often required during railway construction.
In order to improve the problem and improve the corrosion resistance of steel, passivation treatment is usually carried out on the surface of steel, and a dense passivation film with excellent corrosion resistance is formed on the surface of the steel, so that the contact with air, water or an acid-base medium is isolated, the corrosion is prevented, and the internal steel is protected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an anti-corrosion treatment process for a railway track embedded part, and solve the technical problem of poor anti-corrosion performance of the conventional passivation solution.
In order to achieve the purpose, the invention adopts the following technical scheme:
an anti-corrosion treatment process for a railway track embedded part is characterized by comprising the following steps:
(1) Alkali washing for oil removal: cleaning an embedded part sample by using an alkali solution, and then cleaning the sample by using ultrapure water;
(2) Acid pickling for rust removal: carrying out acid cleaning and rust removing operation on the embedded part after the oil is removed by alkali cleaning by adopting a hydrochloric acid solution, and then cleaning a sample by using ultrapure water;
(3) Passivation: and immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, and cleaning and drying after passivation is finished, wherein the passivation solution is composed of modified nano silicon dioxide, modified titanium dioxide sol and epoxy resin.
Preferably, the preparation method of the modified nano-silica comprises the following steps: adding a mono-alkoxy fatty acid titanate coupling agent into an organic solvent isopropanol, heating, stirring and dissolving, then adding nano silicon dioxide into the organic solvent isopropanol, stirring and mixing uniformly, then washing and filtering the mixture, and drying, grinding and sieving the obtained solid to obtain the modified nano silicon dioxide.
Preferably, the mass ratio of the mono-alkoxy fatty acid titanate coupling agent to the nano silicon dioxide is 5-10.
Preferably, the preparation method of the modified titanium dioxide sol is as follows: and (2) uniformly stirring and mixing tetrabutyl titanate, absolute ethyl alcohol and deionized water, then dropwise adding glacial acetic acid into the mixture at a speed of 1-2 drops/second under a stirring state, continuing stirring for 30-60min after the dropwise addition is finished, then adding modified activated carbon into the mixture, stirring for 2-3h, and adjusting the pH value of the solution to 6-7 to obtain the modified titanium dioxide sol.
Preferably, the mass ratio of the tetrabutyl titanate to the anhydrous ethanol to the glacial acetic acid to the deionized water to the modified activated carbon is 10-15.
Preferably, the preparation steps of the modified activated carbon are as follows: adding activated carbon into a (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution, stirring and mixing uniformly at room temperature, then heating to 35-45 ℃, adding a NaOH solution, adjusting the pH of the solution to 8.5-10, reacting for 18-24h, cooling to room temperature after the reaction is finished, adjusting the pH of the solution to acidity, and then washing and drying a reaction product to obtain the modified activated carbon.
Preferably, the mass ratio of the activated carbon to the (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution is 1:2-4.
Preferably, the mass ratio of the modified nano-silica to the modified titanium dioxide sol to the epoxy resin is 2-5.
Preferably, the preparation steps of the passivation solution are as follows: and adding the modified nano-silica and the modified titanium dioxide sol into epoxy resin, and stirring and mixing uniformly to obtain the passivation solution.
Preferably, in the step (3), the passivation temperature is 30-40 ℃ and the passivation time is 5-10min.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, after the modified titanium dioxide sol and the epoxy resin are mixed, a film layer with a three-dimensional network structure is formed on the surface of the metal material, and meanwhile, the modified titanium dioxide sol and active groups in the epoxy resin interact with each other to generate firm water-resistant chemical bonds, so that a net-shaped framework with a compact structure is formed, water molecules are prevented from penetrating through the film layer, and the corrosion resistance of the metal material is further improved.
(2) According to the invention, the nano silicon dioxide is modified, so that the dispersion performance of the nano silicon dioxide in the modified titanium dioxide sol and the epoxy resin is improved, and part of the modified nano silicon dioxide is uniformly filled in the pores of the three-dimensional network structure, so that the film layer is more compact, the permeation of a corrosive medium to the surface of a metal material through the film layer is hindered, and the corrosion resistance of the metal material is further improved.
(3) The modified activated carbon powder is used for modifying the titanium dioxide sol, has the advantages of large specific surface area and good adsorption performance, can be used for adsorbing a corrosive medium to prevent the corrosive medium from immersing into the surface of a metal material, and has a hydrophobic characteristic through alkylation modification, so that the corrosion of water molecules to a metal substrate can be effectively prevented, in addition, the activated carbon has a fluffy and porous structure, part of modified nano silicon dioxide is filled in the pore structure of the activated carbon and has a synergistic effect with the alkyl long chain in the modified activated carbon powder, the steric hindrance is increased together, and the corrosion of the metal substrate is slowed down.
Detailed Description
The present invention will be described in more detail with reference to specific preferred embodiments, but the present invention is not limited to the following embodiments.
It should be noted that, unless otherwise specified, the chemical reagents involved in the present invention are commercially available.
In the embodiment, Q345 steel is used as a base material of an embedded part of a railway track;
the type of the monoalkoxy fatty acid titanate coupling agent is G-132, purchased from Nanjing Quanxi chemical Co., ltd;
nanosilica was purchased from Shanghai Chaowei nanotechnology, inc.;
tetrabutyl titanate was purchased from Shandong Huihan chemical Co., ltd;
(3-chloro-2-hydroxypropyl) trimethylammonium chloride solution was purchased from Shandong Leon New materials science and technology, inc.;
epoxy resin, brand E-44, was purchased from Shenyang Xinmao Fine chemicals, inc.
Example 1
An anti-corrosion treatment process for a railway track embedded part comprises the following steps:
(1) Alkali washing for oil removal: cleaning the embedded part sample for 10min by using a sodium hydroxide solution with the temperature of 75 ℃ and the weight percent of 10 percent, and then cleaning the sample by using ultrapure water, thereby removing impurities on the surface layer of the sample;
(2) Acid pickling for rust removal: performing acid cleaning and rust removing operation on the embedded part subjected to alkali cleaning and oil removing by adopting 10wt% hydrochloric acid solution at room temperature, wherein the acid cleaning time is 3min, and then cleaning the sample by using ultrapure water to remove ferric salt residues, acidic substances and ferrous ions adhered to the surface of the sample;
(3) Passivation: immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, wherein the passivation temperature is 30 ℃, the passivation time is 5min, and after passivation is finished, cleaning and drying, wherein the preparation method of the passivation solution comprises the following steps:
preparing modified nano silicon dioxide: adding 6g of mono-alkoxy fatty acid titanate coupling agent into 100mL of isopropanol serving as an organic solvent, heating, stirring and dissolving, then adding 15g of nano-silica, stirring and mixing uniformly, washing and filtering the mixture, and drying, grinding and sieving the obtained solid to obtain modified nano-silica;
the preparation steps of the modified activated carbon are as follows: adding 5g of activated carbon into 10g of (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution, stirring and mixing uniformly at room temperature, then heating to 40 ℃, adding 1mol/L NaOH solution, adjusting the pH value of the solution to 8.5, reacting for 18h, cooling to room temperature after the reaction is finished, adjusting the pH value of the solution to be acidic, and then washing and drying a reaction product to obtain modified activated carbon;
preparing modified titanium dioxide sol: stirring and mixing 10g of tetrabutyl titanate, 60g of anhydrous ethanol and 10g of deionized water uniformly, then dropwise adding 4g of glacial acetic acid at the speed of 1 drop/second under the stirring state, continuing stirring for 30min after the dropwise addition is finished, then adding 5g of modified activated carbon, stirring for 2h, and adjusting the pH value of the solution to be 6 to obtain modified titanium dioxide sol;
preparing a passivation solution: adding 2g of modified nano-silica and 10g of modified titanium dioxide sol into 20g of epoxy resin E-44, and uniformly stirring and mixing to obtain the passivation solution.
Example 2
An anti-corrosion treatment process for a railway track embedded part comprises the following steps:
(1) Alkali washing for oil removal: cleaning an embedded part sample for 10min by using a sodium hydroxide solution with the temperature of 75 ℃ and the weight percent of 10 percent, and then cleaning the sample by using ultrapure water so as to remove impurities on the surface layer of the sample;
(2) Acid pickling for rust removal: performing acid cleaning and rust removing operation on the embedded part subjected to alkali cleaning and oil removing by adopting 10wt% hydrochloric acid solution at room temperature, wherein the acid cleaning time is 3min, and then cleaning the sample by using ultrapure water to remove ferric salt residues, acidic substances and ferrous ions adhered to the surface of the sample;
(3) Passivation: immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, wherein the passivation temperature is 30 ℃, the passivation time is 5min, and after passivation is finished, cleaning and drying, wherein the preparation method of the passivation solution comprises the following steps:
preparing modified nano silicon dioxide: adding 8g of mono-alkoxy fatty acid titanate coupling agent into 100mL of isopropanol serving as an organic solvent, heating, stirring and dissolving, then adding 20g of nano-silica, stirring and mixing uniformly, washing and filtering the mixture, and drying, grinding and sieving the obtained solid to obtain modified nano-silica;
the preparation steps of the modified activated carbon are as follows: adding 5g of activated carbon into 12g of (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution, stirring and mixing uniformly at room temperature, then heating to 35 ℃, adding 1mol/L NaOH solution, adjusting the pH value of the solution to 8.5, reacting for 20 hours, cooling to room temperature after the reaction is finished, adjusting the pH value of the solution to be acidic, and then washing and drying a reaction product to obtain modified activated carbon;
preparing modified titanium dioxide sol: stirring and mixing 15g of tetrabutyl titanate, 80g of anhydrous ethanol and 12g of deionized water uniformly, then dropwise adding 5g of glacial acetic acid at the speed of 1 drop/second under the stirring state, continuing stirring for 30min after the dropwise addition is finished, then adding 7g of modified activated carbon, stirring for 2h, and adjusting the pH value of the solution to 7 to obtain modified titanium dioxide sol;
preparing a passivation solution: and adding 4g of modified nano-silica and 15g of modified titanium dioxide sol into 20g of epoxy resin E-44, and uniformly stirring and mixing to obtain the passivation solution.
Example 3
An anti-corrosion treatment process for a railway track embedded part comprises the following steps:
(1) Alkali washing for oil removal: cleaning an embedded part sample for 10min by using a sodium hydroxide solution with the temperature of 75 ℃ and the weight percent of 10 percent, and then cleaning the sample by using ultrapure water so as to remove impurities on the surface layer of the sample;
(2) Acid pickling for rust removal: performing acid cleaning and rust removing operation on the embedded part subjected to alkali cleaning and oil removing by adopting 10wt% hydrochloric acid solution at room temperature, wherein the acid cleaning time is 3min, and then cleaning the sample by using ultrapure water to remove ferric salt residues, acidic substances and ferrous ions adhered to the surface of the sample;
(3) Passivation: immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, wherein the passivation temperature is 30 ℃, the passivation time is 5min, and after passivation is finished, cleaning and drying, wherein the preparation method of the passivation solution comprises the following steps:
preparing modified nano silicon dioxide: adding 8g of mono-alkoxy fatty acid titanate coupling agent into 100mL of isopropanol which is an organic solvent, heating, stirring and dissolving, then adding 25g of nano-silica, stirring and mixing uniformly, washing and filtering, drying, grinding and sieving the obtained solid to obtain modified nano-silica;
the preparation steps of the modified activated carbon are as follows: adding 5g of activated carbon into 15g of (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution, stirring and mixing uniformly at room temperature, then heating to 35 ℃, adding 1mol/L NaOH solution, adjusting the pH of the solution to 8.5, reacting for 20 hours, cooling to room temperature after the reaction is finished, adjusting the pH of the solution to be acidic, and then washing and drying a reaction product to obtain modified activated carbon;
preparing modified titanium dioxide sol: stirring and mixing 12g of tetrabutyl titanate, 80g of anhydrous ethanol and 15g of deionized water uniformly, then dropwise adding 6g of glacial acetic acid at the speed of 1 drop/second under the stirring state, continuing stirring for 30min after the dropwise addition is finished, then adding 6g of modified activated carbon, stirring for 2h, and adjusting the pH value of the solution to be 7 to obtain modified titanium dioxide sol;
preparing a passivation solution: and adding 5g of modified nano-silica and 15g of modified titanium dioxide sol into 25g of epoxy resin E-44, and stirring and mixing uniformly to obtain the passivation solution.
Example 4
An anti-corrosion treatment process for a railway track embedded part comprises the following steps:
(1) Alkali washing for oil removal: cleaning the embedded part sample for 10min by using a sodium hydroxide solution with the temperature of 75 ℃ and the weight percent of 10 percent, and then cleaning the sample by using ultrapure water, thereby removing impurities on the surface layer of the sample;
(2) Acid pickling for rust removal: performing acid cleaning and rust removing operation on the embedded part subjected to alkali cleaning and oil removing by adopting 10wt% hydrochloric acid solution at room temperature, wherein the acid cleaning time is 3min, and then cleaning the sample by using ultrapure water to remove ferric salt residues, acidic substances and ferrous ions adhered to the surface of the sample;
(3) Passivation: immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, wherein the passivation temperature is 30 ℃, the passivation time is 5min, and after passivation is finished, cleaning and drying, wherein the preparation method of the passivation solution comprises the following steps:
preparing modified nano silicon dioxide: adding 10g of mono-alkoxy fatty acid titanate coupling agent into 100mL of isopropanol serving as an organic solvent, heating, stirring and dissolving, then adding 25g of nano-silica, stirring and mixing uniformly, washing and filtering the mixture, and drying, grinding and sieving the obtained solid to obtain modified nano-silica;
the preparation steps of the modified activated carbon are as follows: adding 5g of activated carbon into 16g of (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution, stirring and mixing uniformly at room temperature, then heating to 40 ℃, adding 1mol/L NaOH solution, adjusting the pH value of the solution to 8.5, reacting for 20 hours, cooling to room temperature after the reaction is finished, adjusting the pH value of the solution to be acidic, and then washing and drying a reaction product to obtain modified activated carbon;
preparing modified titanium dioxide sol: stirring and mixing 15g of tetrabutyl titanate, 80g of anhydrous ethanol and 12g of deionized water uniformly, then dropwise adding 5g of glacial acetic acid at the speed of 1 drop/second under the stirring state, continuing stirring for 30min after the dropwise addition is finished, then adding 8g of modified activated carbon, stirring for 2h, and adjusting the pH value of the solution to be 7 to obtain modified titanium dioxide sol;
preparing a passivation solution: and adding 5g of modified nano-silica and 18g of modified titanium dioxide sol into 25g of epoxy resin E-44, and stirring and mixing uniformly to obtain the passivation solution.
Comparative example 1
An anti-corrosion treatment process for a railway track embedded part comprises the following steps:
(1) Alkali washing for oil removal: cleaning the embedded part sample for 10min by using a sodium hydroxide solution with the temperature of 75 ℃ and the weight percent of 10 percent, and then cleaning the sample by using ultrapure water, thereby removing impurities on the surface layer of the sample;
(2) Acid pickling for rust removal: performing acid cleaning and rust removing operation on the embedded part subjected to alkali cleaning and oil removing by adopting 10wt% hydrochloric acid solution at room temperature, wherein the acid cleaning time is 3min, and then cleaning the sample by using ultrapure water to remove ferric salt residues, acidic substances and ferrous ions adhered to the surface of the sample;
(3) Passivation: immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, wherein the passivation temperature is 30 ℃, the passivation time is 5min, and after the passivation is finished, cleaning and drying, wherein the preparation method of the passivation solution comprises the following steps:
the preparation steps of the modified activated carbon are as follows: adding 5g of activated carbon into 15g of (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution, stirring and mixing uniformly at room temperature, then heating to 35 ℃, adding 1mol/L NaOH solution, adjusting the pH value of the solution to 8.5, reacting for 20 hours, cooling to room temperature after the reaction is finished, adjusting the pH value of the solution to be acidic, and then washing and drying a reaction product to obtain modified activated carbon;
preparing modified titanium dioxide sol: stirring and mixing 12g of tetrabutyl titanate, 80g of anhydrous ethanol and 15g of deionized water uniformly, then dropwise adding 6g of glacial acetic acid at the speed of 1 drop/second under the stirring state, continuing stirring for 30min after the dropwise addition is finished, then adding 6g of modified activated carbon, stirring for 2h, and adjusting the pH value of the solution to be 7 to obtain modified titanium dioxide sol;
preparing a passivation solution: and adding 15g of modified titanium dioxide sol into 25g of epoxy resin E-44, and uniformly stirring and mixing to obtain the passivation solution.
Comparative example 2
An anti-corrosion treatment process for a railway track embedded part comprises the following steps:
(1) Alkali washing for oil removal: cleaning the embedded part sample for 10min by using a sodium hydroxide solution with the temperature of 75 ℃ and the weight percent of 10 percent, and then cleaning the sample by using ultrapure water, thereby removing impurities on the surface layer of the sample;
(2) Acid pickling for rust removal: performing acid cleaning and rust removing operation on the embedded part subjected to the alkali cleaning and oil removing by adopting 10wt% hydrochloric acid solution at room temperature, wherein the acid cleaning time is 3min, and then cleaning the sample by using ultrapure water to remove iron salt residues, acidic substances and ferrous ions adhered to the surface of the sample;
(3) Passivation: immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, wherein the passivation temperature is 30 ℃, the passivation time is 5min, and after passivation is finished, cleaning and drying, wherein the preparation method of the passivation solution comprises the following steps:
preparing modified nano silicon dioxide: adding 8g of mono-alkoxy fatty acid titanate coupling agent into 100mL of isopropanol serving as an organic solvent, heating, stirring and dissolving, then adding 25g of nano-silica, stirring and mixing uniformly, washing and filtering the mixture, and drying, grinding and sieving the obtained solid to obtain modified nano-silica;
preparing a passivation solution: and adding 5g of modified nano silicon dioxide into 25g of epoxy resin E-44, and uniformly stirring and mixing to obtain the passivation solution.
Comparative example 3
An anti-corrosion treatment process for a railway track embedded part comprises the following steps:
(1) Alkali washing for oil removal: cleaning the embedded part sample for 10min by using a sodium hydroxide solution with the temperature of 75 ℃ and the weight percent of 10 percent, and then cleaning the sample by using ultrapure water, thereby removing impurities on the surface layer of the sample;
(2) Acid pickling for rust removal: performing acid cleaning and rust removing operation on the embedded part subjected to alkali cleaning and oil removing by adopting 10wt% hydrochloric acid solution at room temperature, wherein the acid cleaning time is 3min, and then cleaning the sample by using ultrapure water to remove ferric salt residues, acidic substances and ferrous ions adhered to the surface of the sample;
(3) Passivation: and (3) immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, wherein the passivation temperature is 30 ℃, the passivation time is 5min, and after the passivation is finished, cleaning and drying, wherein the epoxy resin E-44 is directly used as a passivating agent.
The railway track embedded parts obtained in examples 1 to 4 and comparative examples 1 to 3 were subjected to a neutral salt spray test and a salt water resistance test.
And (3) testing neutral salt spray: the test method refers to GB/T10125-2012, the corrosion resistance of the test sample is evaluated by observing the occurrence time of white rust, the test is performed for 5 times in parallel, the results are averaged, and the test results are shown in the following table:
and (3) testing the salt water resistance: the method comprises the following steps of respectively immersing the railway track embedded parts into sodium chloride solution with the mass concentration of 5%, evaluating the corrosion resistance of a sample by observing the occurrence time of white rust, carrying out parallel tests for 5 times, averaging the results, and showing the test results in the following table:
as can be seen from the table, the railway track embedded part prepared by the embodiment has good corrosion resistance.
Finally, it is to be noted that: the above examples do not limit the invention in any way. It will be apparent to those skilled in the art that various modifications and improvements can be made to the invention. Accordingly, any modification or improvement made without departing from the spirit of the present invention is within the scope of the claimed invention.
Claims (7)
1. An anti-corrosion treatment process for a railway track embedded part, which is characterized by comprising the following steps:
(1) Alkali washing for oil removal: cleaning the embedded part sample by using an alkali solution, and then cleaning the sample by using ultrapure water;
(2) Acid pickling for rust removal: carrying out acid cleaning and rust removing operation on the embedded part after the oil is removed by alkali cleaning by adopting a hydrochloric acid solution, and then cleaning a sample by using ultrapure water;
(3) Passivation: immersing the embedded part subjected to acid cleaning and rust removal into a passivation solution, and cleaning and drying after passivation is completed, wherein the passivation solution is composed of modified nano silicon dioxide, modified titanium dioxide sol and epoxy resin;
the preparation method of the modified nano silicon dioxide comprises the following steps: adding a mono-alkoxy fatty acid titanate coupling agent into an organic solvent isopropanol, heating, stirring and dissolving, then adding nano silicon dioxide into the organic solvent isopropanol, stirring and mixing uniformly, then washing and filtering the mixture, and drying, grinding and sieving the obtained solid to obtain modified nano silicon dioxide;
the preparation method of the modified titanium dioxide sol comprises the following steps: stirring and mixing tetrabutyl titanate, absolute ethyl alcohol and deionized water uniformly, then dropwise adding glacial acetic acid into the mixture at the speed of 1-2 drops/second under the stirring state, continuing stirring for 30-60min after the dropwise addition is finished, then adding modified activated carbon into the mixture, stirring for 2-3h, and adjusting the pH value of the solution to 6-7 to obtain modified titanium dioxide sol;
the preparation steps of the modified activated carbon are as follows: adding activated carbon into a (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution, stirring and mixing uniformly at room temperature, heating to 35-45 ℃, adding a NaOH solution, adjusting the pH of the solution to 8.5-10, reacting for 18-24h, cooling to room temperature after the reaction is finished, adjusting the pH of the solution to acidity, and washing and drying a reaction product to obtain the modified activated carbon.
2. The anti-corrosion treatment process for the railway track embedded part according to claim 1, wherein the mass ratio of the mono-alkoxy fatty acid titanate coupling agent to the nano-silica is 5-10.
3. The anti-corrosion treatment process for the embedded part of the railway track according to claim 1, wherein the mass ratio of the tetrabutyl titanate to the absolute ethyl alcohol to the glacial acetic acid to the deionized water to the modified activated carbon is 10-15.
4. The anti-corrosion treatment process for the railway track embedded part according to claim 1, wherein the mass ratio of the activated carbon to the (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride solution is 1:2-4.
5. The anti-corrosion treatment process for the embedded part of the railway track as claimed in claim 1, wherein the mass ratio of the modified nano silica to the modified titanium dioxide sol to the epoxy resin is 2-5.
6. The anti-corrosion treatment process for the embedded part of the railway track as claimed in claim 1, wherein the passivation solution is prepared by the following steps: and adding the modified nano-silica and the modified titanium dioxide sol into epoxy resin, and stirring and mixing uniformly to obtain the passivation solution.
7. The anti-corrosion treatment process for the embedded part of the railway track according to claim 1, wherein in the step (3), the passivation temperature is 30-40 ℃ and the passivation time is 5-10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210361405.2A CN114657546B (en) | 2022-04-07 | 2022-04-07 | Anti-corrosion treatment process for railway track embedded part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210361405.2A CN114657546B (en) | 2022-04-07 | 2022-04-07 | Anti-corrosion treatment process for railway track embedded part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114657546A CN114657546A (en) | 2022-06-24 |
| CN114657546B true CN114657546B (en) | 2022-11-15 |
Family
ID=82036222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210361405.2A Active CN114657546B (en) | 2022-04-07 | 2022-04-07 | Anti-corrosion treatment process for railway track embedded part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114657546B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115786900B (en) * | 2022-12-05 | 2023-06-23 | 武汉铁路职业技术学院 | Passivating solution for embedded part of railway track and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10241510A1 (en) * | 2002-09-07 | 2004-03-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Preparation of nano composites by organic modification of nano filler useful as a paint, adhesive, casting composition, in aircraft construction, electronics, automobile finishing, and as a parquet flooring lacquer |
| CN103554409A (en) * | 2013-10-21 | 2014-02-05 | 北京金汇利应用化工制品有限公司 | Water-based anticorrosive resin and preparation method thereof |
| CN105062355B (en) * | 2015-07-20 | 2017-08-25 | 浙江大学自贡创新中心 | Nano-composite water durably anticorrosion paint preparation method for ship |
| CN105002487B (en) * | 2015-08-14 | 2017-12-15 | 无锡伊佩克科技有限公司 | Chrome-free tanning agent after a kind of metal-plated with hydrophobic surface performance |
| CN110201659A (en) * | 2019-05-14 | 2019-09-06 | 齐鲁理工学院 | A kind of method of activated carbon supported Nano titanium dioxide |
| CN112759958A (en) * | 2020-12-30 | 2021-05-07 | 深圳市杰昌实业有限公司 | Protective coating for metal material surface |
| CN113818017B (en) * | 2021-11-22 | 2022-03-11 | 武汉理工大学 | Passivating solution for stainless steel car body of railway vehicle and preparation method thereof |
-
2022
- 2022-04-07 CN CN202210361405.2A patent/CN114657546B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114657546A (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Inhibitor loaded functional HNTs modified coatings towards corrosion protection in reinforced concrete environment | |
| CN114478064B (en) | Concrete curing agent, curing coating and preparation method thereof | |
| CN114657546B (en) | Anti-corrosion treatment process for railway track embedded part | |
| CN107541359B (en) | Pollution flashover-preventing coating cleaning agent | |
| CN115572976B (en) | Composite corrosion inhibitor for metal steel structure of marine building and preparation method thereof | |
| CN105861191B (en) | A kind of lambda sensor and ternary catalyzing unit function repair liquid and preparation method and application method | |
| CN114292704A (en) | Novel cleaning agent for ceramic filter plate and preparation method thereof | |
| CN108178662B (en) | Double-component concrete surface modification material and preparation and use method thereof | |
| CN117603621B (en) | Anti-scale and anti-corrosion coating for oil pipe and preparation method thereof | |
| CN114657572A (en) | Metal cleaning agent with antirust and anticorrosive functions and preparation method thereof | |
| WO2024087548A1 (en) | Surface treatment method for permanent magnet, permanent magnet and protective film thereof | |
| CN112939546A (en) | Hydrotalcite-based cement slurry reinforcing steel bar surface targeting protective material and preparation method thereof | |
| CN111072308A (en) | Concrete anticorrosive agent and preparation method thereof | |
| WO2024016538A1 (en) | Concrete protection material, preparation method therefor, and construction method thereof | |
| CN105369226A (en) | Chemical nickel phosphor plating solution for surface acidity of sintered NdFeB magnet, and nickel phosphor plating process | |
| CN108395133B (en) | Preparation method of long-acting corrosion-resistant reinforcing steel bar rust inhibitor material | |
| CN117986975A (en) | Metal plate passivating agent and preparation method thereof | |
| CN115786900B (en) | Passivating solution for embedded part of railway track and preparation method thereof | |
| CN111607795A (en) | Metal slow-release additive suitable for all environments and preparation method thereof | |
| CN116969611B (en) | Corrosion and scale inhibition mixture and application thereof | |
| CN116376401B (en) | PH response type long-acting intelligent water-based anticorrosive paint and preparation method thereof | |
| CN115491074B (en) | Cuprous sulfide quantum dot loaded reduced graphene oxide nanoparticle and composite coating | |
| CN117511348B (en) | Self-repairing heavy-duty anticorrosive paint and preparation method thereof | |
| CN115611658B (en) | Concrete stone-exposing agent for assembled prefabricated part | |
| CN118255541A (en) | Corrosion-resistant concrete transmission inhibitor and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |