CN107880751A - A kind of preparation method of metal corrosion-resistant coating - Google Patents
A kind of preparation method of metal corrosion-resistant coating Download PDFInfo
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- CN107880751A CN107880751A CN201711176879.5A CN201711176879A CN107880751A CN 107880751 A CN107880751 A CN 107880751A CN 201711176879 A CN201711176879 A CN 201711176879A CN 107880751 A CN107880751 A CN 107880751A
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- resistant coating
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- metal corrosion
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- titanium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
- C09D171/02—Polyalkylene oxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to a kind of preparation method of metal corrosion-resistant coating, comprise the following steps：1) silicon precursor, good solvent, water are mixed, stirs 40 60min in 200 300r/min rotating speed, it is 3.5 6.5 to add acid for adjusting pH value, is warming up at 35 40 DEG C and keeps 2 5h；2) titanium precursors are added, 1 2h is stirred under 400 500r/min rotating speed；3) compounds containing sodium is added, 2 4h are stirred under 200 300r/min rotating speed, then stands again and places 15 20h, produce metal corrosion-resistant coating.The present invention is applied to oil field, can be increased to more than 5 years using the life-span of 23 years by conventional valve body.
Description
Technical field
The invention belongs to paint field, and in particular to a kind of preparation method of metal corrosion-resistant coating.
Background technology
As China's oil chemical industry develops, national economic development needs more energy, oil exploitation, newly-built oil gas
Pipeline, the petroleum storage tank equipment that is continuously increased and puts into production are more and more, in oilfield production, various petroleum transportation pipelines, and even
Then the links of oil field production, maintain the normal operation of oil field production.Any one pipeline, which breaks down, can all influence
The production in oil field, the lighter may cause environmental pollution and economic loss, and severe one can then cause production of hydrocarbons to be paused.
With the continuous exhaustion of fossil energy, oil and gas development must not be to barren oil field or containing high H2S, Cl-It is situated between etc. corrosivity
The oil field transfer of matter, and H2S, Cl-It is very serious to corrosion of metal structure in ball valve Deng medium.The day exploited such as Tarim Oilfield
Contain substantial amounts of Cl in right gas-, and the ball valve that they are used is made up of two-way stainless steel, cost is ten times of ordinary carbon steel ball valve
More than, but nonetheless, the service life of ball valve is also undesirable, must just change within 2 to three years；Sichuan and the stone of southwest
H in oil, natural gas2S contents are higher, and such as puguang gas field, its gas reserves is very big, and it is stainless that puguang gas field employs overall 316
Steel, the choke valve of internals chemical nickel plating, but using effect are simultaneously bad, and valve erosion is still very serious.Ball valve is by H2S, Cl-Deng Jie
Matter is corroded, and can be caused valve cracking, oil gas leakage, be caused inflammable and explosive danger, therefore, it is necessary to the hardware in ball valve is entered
Row protection is handled, to obstruct H2S, Cl-Corrosion.
At present, it is phosphatization and chromaking to improve the most frequently used method of anti-corrosion of metal performance, but they are big for environment pollution, uncomfortable
Conjunction is continuing with, it is therefore desirable to develops a kind of new anti-corrosion of metal processing method.
The content of the invention
The present invention provides a kind of metal corrosion-resistant coating and preparation method thereof for prior art weak point.
To achieve the above object, the technical solution adopted for the present invention to solve the technical problems is：
A kind of preparation method of metal corrosion-resistant coating, comprises the following steps：
1) silicon precursor, good solvent, water are mixed, stirs 40-60min in 200-300r/min rotating speed, add acid
Regulation pH value is 3.5-6.5, is warming up at 35-40 DEG C and keeps 2-5h；
2) titanium precursors are added, 1-2h is stirred under 400-500r/min rotating speed；
3) compounds containing sodium is added, 2-4h is stirred under 200-300r/min rotating speed, then stands again and places 15-20h,
Produce metal corrosion-resistant coating.
Further, the silicon precursor is one or more in methyl silicate, tetraethyl orthosilicate, butyl silicate.
Further, the good solvent is one or more in ethanol, glycerine, polyethylene glycol.
Further, the acid is hydrochloric acid or sulfuric acid.
Further, the titanium precursors are tetra-n-butyl titanate or tetraethyl titanate.
Further, the compounds containing sodium is natrium nitrosum or Boratex.
Further, count in parts by weight, the preparing raw material dosage of the metal corrosion-resistant coating is silicon precursor 25-40
Part, good solvent 60-90 parts, water 20-45 parts, titanium precursors 15-30 parts, compounds containing sodium 0.05-0.5 parts.
Further, count in parts by weight, the preparing raw material dosage of the metal corrosion-resistant coating is silicon precursor 30-40
Part, good solvent 60-75 parts, water 20-38 parts, titanium precursors 18-24 parts, compounds containing sodium 0.05-0.25 parts.
Further, in the silicon precursor and titanium precursors siliceous, titanium elements mol ratios be 1-2:1.
Further, the mass ratio of the compounds containing sodium and silicon precursor is 0.1-0.2:12-20.
Beneficial effect of the present invention：
Complex sol is made using the method for silicon and titanium hydrolysis of alkoxide in the present invention, and stability is strong, can protect at normal temperatures
Deposit 2 months, the network structure in obtained complex sol film is more fine and close hard, smooth in the coating surface of metal valve body, the painting
Layer hydrophobic performance is excellent, also has very excellent corrosion resistance and inoxidizability, particularly under high-sulfur, homadamon border
Decay resistance is strong, can effectively extend the service life of metal valve, expands the use range of metal valve, so as to improve city
Field competitiveness.Applied to oil field, can be increased to more than 5 years using 2-3 life-span by conventional valve body.
Embodiment
The present invention is further detailed explanation for example below：
Embodiment 1
A kind of preparation method of metal corrosion-resistant coating, comprises the following steps：
1) by 20 parts of methyl silicate 25-40 parts, 60 parts of polyethylene glycol, water mixing, 40- is stirred in 300r/min rotating speed
60min, it is 6 to add salt acid for adjusting pH value, is warming up at 40 DEG C and keeps 2h；
2) 15 parts of tetra-n-butyl titanate or tetraethyl titanate are added, 1h is stirred under 400r/min rotating speed；
3) 0.1 part of natrium nitrosum is added, 4h is stirred under 200r/min rotating speed, then stands again and places 20h, produce gold
Belong to corrosion resistant coating.
Embodiment 2
A kind of preparation method of metal corrosion-resistant coating, comprises the following steps：
1) by 20 parts of 25 parts of methyl silicate, 60 parts of glycerine, water mixing, 40min is stirred in 200r/min rotating speed, is added
It is 3.5 to enter salt acid for adjusting pH value, is warming up at 35 DEG C and keeps 4h；
2) 15 parts of tetraethyl titanate is added, 1h is stirred under 400r/min rotating speed；
3) 0.05 part of natrium nitrosum is added, 3h is stirred under 200r/min rotating speed, then stands again and places 15h, produce
Metal corrosion-resistant coating.
Embodiment 3
A kind of preparation method of metal corrosion-resistant coating, comprises the following steps：
1) by 20 parts of 25 parts of methyl silicate, 60 parts of ethanol, water mixing, 40-60min is stirred in 200r/min rotating speed,
It is 4 to add salt acid for adjusting pH value, is warming up at 35 DEG C and keeps 2-5h；
2) 20 parts of tetra-n-butyl titanate is added, 1.5h is stirred under 400r/min rotating speed；
3) 0.2 part of Boratex is added, 3h is stirred under 280r/min rotating speed, then stands again and places 18h, produce metal
Corrosion resistant coating.
Embodiment 4
A kind of preparation method of metal corrosion-resistant coating, comprises the following steps：
1) by 45 parts of 40 parts of butyl silicate, ethanol, 90 parts of polyethylene glycol, water mixing, stirred in 200r/min rotating speed
60min, it is 5 to add salt acid for adjusting pH value, is warming up at 35 DEG C and keeps 5h；
2) 30 parts of tetraethyl titanate is added, 1h is stirred under 500r/min rotating speed；
3) 0.5 part of natrium nitrosum is added, 4h is stirred under 300r/min rotating speed, then stands again and places 20h, produce gold
Belong to corrosion resistant coating.
Embodiment 5
This embodiment is the comparative example of embodiment 1, no compounds containing sodium addition.
Embodiment 6
This embodiment is the comparative example of embodiment 1, no titanium precursors addition.
By coating made from the various embodiments described above, it is sprayed on using Typical spray mode on valve, then 4h is dried at 800 DEG C
.
The test data such as following table of valve is correspondingly made in each embodiment：
As can be seen that the embodiment 1-4 added with titanium precursors and compounds containing sodium, has excellent corrosion resistance,
And hardness is high.And not corrosion resistant phenomenon occurs in embodiment 5-6, wherein to the original heavy of resistance to crude oil sediment and coating
Amount is compared statistics, and the wherein unit area weight loss of embodiment 5 is 0.650mg/cm2, the unit area weightlessness of embodiment 6
Measure as 0.768mg/cm2。
To actually using investigation statisticses using embodiment 1-4 coating, valve can be used more than 5 years.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those skilled in the art disclosed herein technical scope in, can without the change that creative work is expected or
Replace, should all be included within the scope of the present invention.
Claims (10)
1. a kind of preparation method of metal corrosion-resistant coating, it is characterised in that comprise the following steps：
1) silicon precursor, good solvent, water are mixed, stirs 40-60min in 200-300r/min rotating speed, add acid regulation
PH value is 3.5-6.5, is warming up at 35-40 DEG C and keeps 2-5h；
2) titanium precursors are added, 1-2h is stirred under 400-500r/min rotating speed；
3) compounds containing sodium is added, 2-4h is stirred under 200-300r/min rotating speed, then stands again and places 15-20h, produce
Metal corrosion-resistant coating.
2. metal corrosion-resistant coating and preparation method thereof according to claim 1, it is characterised in that：The silicon precursor is just
It is one or more in methyl silicate, tetraethyl orthosilicate, butyl silicate.
3. metal corrosion-resistant coating and preparation method thereof according to claim 1, it is characterised in that：The good solvent is second
It is one or more in alcohol, glycerine, polyethylene glycol.
4. metal corrosion-resistant coating and preparation method thereof according to claim 1, it is characterised in that：The acid is hydrochloric acid or sulphur
Acid.
5. metal corrosion-resistant coating and preparation method thereof according to claim 1, it is characterised in that：The titanium precursors are titanium
Sour four N-butyls or tetraethyl titanate.
6. metal corrosion-resistant coating and preparation method thereof according to claim 1, it is characterised in that：The compounds containing sodium is
Natrium nitrosum or Boratex.
7. metal corrosion-resistant coating and preparation method thereof according to claim 1, it is characterised in that：Count in parts by weight, institute
The preparing raw material dosage for stating metal corrosion-resistant coating is silicon precursor 25-40 parts, good solvent 60-90 parts, water 20-45 parts, titanium
Presoma 15-30 parts, compounds containing sodium 0.05-0.5 parts.
8. metal corrosion-resistant coating and preparation method thereof according to claim 7, it is characterised in that：Count in parts by weight, institute
The preparing raw material dosage for stating metal corrosion-resistant coating is silicon precursor 30-40 parts, good solvent 60-75 parts, water 20-38 parts, titanium
Presoma 18-24 parts, compounds containing sodium 0.05-0.25 parts.
9. metal corrosion-resistant coating and preparation method thereof according to claim 1, it is characterised in that：The silicon precursor and titanium
In presoma siliceous, titanium elements mol ratios be 1-2:1.
10. metal corrosion-resistant coating and preparation method thereof according to claim 1, it is characterised in that：The compounds containing sodium
Mass ratio with silicon precursor is 0.1-0.2:12-20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711176879.5A CN107880751A (en) | 2017-11-22 | 2017-11-22 | A kind of preparation method of metal corrosion-resistant coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711176879.5A CN107880751A (en) | 2017-11-22 | 2017-11-22 | A kind of preparation method of metal corrosion-resistant coating |
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| Publication Number | Publication Date |
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| CN107880751A true CN107880751A (en) | 2018-04-06 |
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| CN201711176879.5A Pending CN107880751A (en) | 2017-11-22 | 2017-11-22 | A kind of preparation method of metal corrosion-resistant coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111187405A (en) * | 2018-11-15 | 2020-05-22 | 中国科学院大连化学物理研究所 | High-molecular ultraviolet absorbent and preparation method and application thereof |
| CN112048202A (en) * | 2020-09-14 | 2020-12-08 | 陈佳 | Preparation method of steel-based corrosion-resistant super-hydrophobic coating |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403507A (en) * | 2001-09-02 | 2003-03-19 | 福州大学 | Prepn of nano level anticorrosive oxide coating |
-
2017
- 2017-11-22 CN CN201711176879.5A patent/CN107880751A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403507A (en) * | 2001-09-02 | 2003-03-19 | 福州大学 | Prepn of nano level anticorrosive oxide coating |
Non-Patent Citations (1)
| Title |
|---|
| 包彦堃等: "《熔模精密铸造技术》", 31 August 2012, 浙江大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111187405A (en) * | 2018-11-15 | 2020-05-22 | 中国科学院大连化学物理研究所 | High-molecular ultraviolet absorbent and preparation method and application thereof |
| CN111187405B (en) * | 2018-11-15 | 2021-04-23 | 中国科学院大连化学物理研究所 | High-molecular ultraviolet absorbent and preparation method and application thereof |
| CN112048202A (en) * | 2020-09-14 | 2020-12-08 | 陈佳 | Preparation method of steel-based corrosion-resistant super-hydrophobic coating |
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Application publication date: 20180406 |