CN114262566A - Method for improving performance of outer vertical face of transformer substation building - Google Patents
Method for improving performance of outer vertical face of transformer substation building Download PDFInfo
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- CN114262566A CN114262566A CN202210046919.9A CN202210046919A CN114262566A CN 114262566 A CN114262566 A CN 114262566A CN 202210046919 A CN202210046919 A CN 202210046919A CN 114262566 A CN114262566 A CN 114262566A
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- Prior art keywords
- coating
- hydrophobic
- polymer
- outer facade
- improving
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 23
- 238000000576 coating method Methods 0.000 claims description 70
- 239000011248 coating agent Substances 0.000 claims description 68
- 239000011247 coating layer Substances 0.000 claims description 23
- 229920001600 hydrophobic polymer Polymers 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 18
- 150000001412 amines Chemical class 0.000 claims description 15
- -1 phenylene vinylene Chemical group 0.000 claims description 15
- 229920000642 polymer Polymers 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 11
- 229920000547 conjugated polymer Polymers 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- GNVRJGIVDSQCOP-UHFFFAOYSA-N n-ethyl-n-methylethanamine Chemical compound CCN(C)CC GNVRJGIVDSQCOP-UHFFFAOYSA-N 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 229920006254 polymer film Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 239000002345 surface coating layer Substances 0.000 abstract 1
- 229920001296 polysiloxane Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000005678 ethenylene group Chemical group [H]C([*:1])=C([H])[*:2] 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a method for improving the performance of an outer vertical surface of a transformer substation building, which takes a transformer substation building wall as a base layer, takes an outer vertical surface coating layer as a middle layer and takes a hydrophobic material as a hydrophobic layer.
Description
Technical Field
The invention relates to the technical field of transformer substation buildings, in particular to a method for improving the performance of an outer vertical surface of a transformer substation building.
Background
In consideration of safety, the outer vertical surface of the transformer substation building has certain particularity compared with a common building, the outer vertical surface of the building is required to always keep certain hydrophobicity, and when the hydrophobicity of the outer vertical surface of the transformer substation building is poor, moisture permeates, so that the transformer substation building is very unfavorable. Therefore, in the change process of weather, temperature and humidity, it is very important to always keep the outer facade of the transformer substation building to have higher hydrophobicity.
The current way to maintain the hydrophobicity of building facades is mainly by adding hydrophobic components to the facade coatings, which mainly comprises three methods, the first being that, since the resin component of many coatings is lipophilic, i.e. has a certain hydrophobicity, the lipophilic resin component of the facade coating component can be increased to increase the hydrophobic properties. The second is the addition of low surface energy materials, commonly used including silicones and the like, to the facade coating. And the third is that an inorganic nanoparticle layer is added on the hydrophobic surface of the outer facade, and the inorganic nanoparticles are modified mainly by methods such as plasma and vapor deposition, so that the roughness of the surface is increased, and the hydrophobicity is further increased.
The first method above, which involves readjustment of the coating formulation due to increased content of resin component, due to resin being an important component in the coating, often results in changes in properties of the coating itself, such as viscosity, hiding, etc.; the third method is a second method, because the modification process is complicated and relatively high in cost, the first method and the third method are rarely used in the field, and the second method is commonly used in the field, and a low-surface-energy material is added into the facade coating to be used as a functional component like a preservative, a defoaming agent and the like, so that the performance of the material cannot be greatly influenced.
Although the hydrophobic property is improved to a certain extent by adding low surface energy components such as polysiloxane, the frequently used polysiloxane generally contains acidic groups, so that the polysiloxane is easy to hydrolyze to a certain extent at a certain temperature and humidity during long-time use, and the hydrophobic property is reduced.
Disclosure of Invention
The invention provides a coating for improving the hydrophobic property of an outer facade of a transformer substation building, which specifically comprises the following steps of laminating a polymer coating on the surface of an outer facade coating, wherein the polymer coating comprises a hydrophobic polymer, and the hydrophobic polymer has the following structural formula:
in the structural formula (1), R1 to R4 each independently represent a linear or branched alkyl group of 6 to 20 carbon atoms, a linear or branched alkoxy group having 1 to 24 carbon atoms;
the polymeric coating film further comprises an inorganic amine.
Preferably, the hydrophobic polymer is preferably a t-conjugated polymer having at least one type of phenylene vinylene, iminophenylene as a monomer unit.
Preferably, the polymer coating film is arranged on the side which is in contact with the outer facade coating layer, and the surface of the outer facade coating layer needs to be pretreated.
Preferably, the inorganic amine is any one of diethylamine and diethylmethylamine.
Preferably, the polymer coating film further comprises a solvent, and the solvent is any one of ethylene glycol and glycerol.
Further, the content of the polymer coating film components is as follows:
24-38% of hydrophobic polymer, 4-6% of inorganic amine and 50-80% of solvent, wherein the weight percentage of the components is calculated.
The invention also provides a method for improving the hydrophobic property of the outer facade of the transformer substation building, which comprises the following steps:
s1: pretreating a coating layer of the outer facade of the transformer substation building, removing impurities, polishing and processing the surface roughness of the coating layer to a certain range;
s2: preparing coating liquid, respectively adding the hydrophobic polymer and inorganic amine into a solvent, and uniformly stirring to obtain the coating liquid;
s3: coating the coating liquid prepared in the step S2 on the surface of the pretreated facade coating layer;
s4: drying and heating at 80-120 deg.C for 20 min.
Further, the coating thickness of the S3 coating solution is 8-25 μm.
Advantageous effects
According to the invention, by coating the hydrophobic polymer, the hydrophobic property of the exterior facade coating layer of the transformer substation building is effectively improved, and the hydrophobicity can be effectively improved without replacing the coating layer under the condition that the hydrophobic property of the exterior facade is reduced. As the nitrogen-containing group in the hydrophobic polymer can be combined with the polysiloxane acidic group in the facade coating, the hydrolysis of polysiloxane is effectively inhibited, and the hydrophobicity of the facade coating is effectively maintained. The addition of inorganic amine plays a certain role in crosslinking, so that the hydrophobic polymer is more firmly combined with the coating layer.
Drawings
FIG. 1 is a schematic view of a polymer coating film of the present invention;
the building comprises a transformer substation building outer facade wall 1, a coating layer 2 and a polymer coating 3.
Detailed Description
The transformer substation building wall serves as a base layer, the outer facade coating serves as a middle layer, and the hydrophobic material, namely the polymer coating, is improved to serve as a hydrophobic layer.
Example 1
And (4) pretreating a coating layer of the outer facade of the transformer substation building, removing impurities and polishing.
Preparing coating liquid, respectively adding the 24% hydrophobic polymer and 4% inorganic amine into 72% solvent, and uniformly stirring to obtain the coating liquid; (ii) a
Wherein the hydrophobic polymer is a t-conjugated polymer having a phenylene vinylene group as a monomer unit;
the inorganic amine is diethylamine;
coating the prepared coating liquid on the surface of the pretreated exterior facade coating layer;
drying and heating at 80 deg.C for 20 min.
The coating thickness of the coating solution was 8 μm.
Example 2
And (4) pretreating a coating layer of the outer facade of the transformer substation building, removing impurities and polishing.
Preparing coating liquid, respectively adding the 30% hydrophobic polymer and 5% inorganic amine into 65% solvent, and uniformly stirring to obtain the coating liquid; (ii) a
Wherein the hydrophobic polymer is a t-conjugated polymer having a phenylene vinylene group as a monomer unit;
the inorganic amine is diethylamine;
coating the prepared coating liquid on the surface of the pretreated exterior facade coating layer;
drying and heating at 80 deg.C for 20 min.
The coating thickness of the coating solution was 16 μm.
Example 3
And (4) pretreating a coating layer of the outer facade of the transformer substation building, removing impurities and polishing.
Preparing coating liquid, respectively adding the 38% hydrophobic polymer and 6% inorganic amine into 56% solvent, and uniformly stirring to obtain the coating liquid; (ii) a
Wherein the hydrophobic polymer is a t-conjugated polymer having a phenylene vinylene group as a monomer unit;
the inorganic amine is diethylamine;
coating the prepared coating liquid on the surface of the pretreated exterior facade coating layer;
drying and heating at 80 deg.C for 20 min.
The coating thickness of the coating solution was 25 μm.
Examples 4 to 5
In the same manner as in example 1, the hydrophobic polymer was replaced with a t-conjugated polymer having iminophenylene and vinylene as monomer units, respectively.
Examples 6 to 8
The coating thicknesses of the coating liquids were 16 and 25, respectively, as in example 1.
Comparative example
And testing the hydrophobicity of the newly brushed polysiloxane coating layer on the outer facade of the conventional transformer substation building for 30, 60, 90 and 120 days respectively.
Examples 1-8 were also tested for hydrophobicity after coating at the test times described above, respectively.
The contact angle of the surface to water is measured according to the Young's formula in the above test mode.
TABLE 1 hydrophobic Properties before and after coating (contact Angle)
From table 1, it can be determined that at 30 days, the hydrophobic properties before and after coating are not greatly different, and the contact angles are all around 140 degrees; at 90 days, the contact angle of the conventional polysiloxane coating layer is reduced obviously, and the contact angle after coating is reduced less; at 120 days, the contact angle of the conventional polysiloxane coating layer is further obviously reduced; this indicates that the polymer coating film of the present invention functions to maintain the hydrophobic properties of the facade. Meanwhile, as can be seen from table 1, example 5, i.e., the hydrophobic polymer, is a t-conjugated polymer having vinylidene groups as monomer units, respectively, and the effect is best when the coating liquid is applied to a thickness of 8 μm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A coating for improving the hydrophobic performance of the outer facade of a transformer substation building specifically comprises the following steps of laminating a polymer coating on the surface of an outer facade coating, wherein the polymer coating comprises a hydrophobic polymer, and the hydrophobic polymer has the following structural formula:
in the structural formula (1), R1 to R4 each independently represent a linear or branched alkyl group of 6 to 20 carbon atoms, a linear or branched alkoxy group having 1 to 24 carbon atoms;
the polymeric coating film further comprises an inorganic amine.
2. The coating for improving the hydrophobic property of the outer facade of the substation building according to claim 1 is characterized in that: the hydrophobic polymer is preferably a t-conjugated polymer having at least one type of phenylene vinylene, and iminophenylene as a monomer unit.
3. The coating for improving the hydrophobic property of the outer facade of the substation building according to claim 1 is characterized in that: the polymer film is coated on one surface which is in contact with the outer facade coating layer, and the surface of the outer facade coating layer needs to be pretreated.
4. The coating for improving the hydrophobic property of the outer facade of the substation building according to claim 1 is characterized in that: the inorganic amine is any one of diethylamine and diethylmethylamine.
5. The coating for improving the hydrophobic property of the outer facade of the substation building according to claim 1 is characterized in that: the polymer coating film also comprises a solvent, wherein the solvent is any one of ethylene glycol and glycerol.
6. The coating for improving the hydrophobic property of the outer facade of the substation building according to claim 1 is characterized in that: 24-38% of hydrophobic polymer, 4-6% of inorganic amine and 50-80% of solvent, wherein the weight percentage of the components is calculated.
7. A method for improving the hydrophobic performance of the outer facade of a transformer substation building specifically comprises the following steps:
s1: pretreating a coating layer of the outer facade of the transformer substation building, removing impurities, polishing and processing the surface roughness of the coating layer to a certain range;
s2: preparing coating liquid, respectively adding the hydrophobic polymer and inorganic amine into a solvent, and uniformly stirring to obtain the coating liquid;
s3: coating the coating liquid prepared in the step S2 on the surface of the pretreated facade coating layer;
s4: drying and heating at 80-120 deg.C for 20 min.
8. The method for improving the hydrophobic property of the outer face of the substation building according to claim 7, wherein the coating liquid S3 is coated to a thickness of 8-25 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210046919.9A CN114262566A (en) | 2022-01-15 | 2022-01-15 | Method for improving performance of outer vertical face of transformer substation building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210046919.9A CN114262566A (en) | 2022-01-15 | 2022-01-15 | Method for improving performance of outer vertical face of transformer substation building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114262566A true CN114262566A (en) | 2022-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210046919.9A Pending CN114262566A (en) | 2022-01-15 | 2022-01-15 | Method for improving performance of outer vertical face of transformer substation building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114262566A (en) |
-
2022
- 2022-01-15 CN CN202210046919.9A patent/CN114262566A/en active Pending
Non-Patent Citations (6)
| Title |
|---|
| A. VENKATESWARA RAO等: "Superhydrophobic silica aerogels based on methyltrimethoxysilane precursor" * |
| AILAN QU等: "Preparation of hybrid film with superhydrophobic surfaces based on irregularly structure by emulsion polymerization" * |
| N.J.SHIRTCLIFFE等: "Intrinsically Superhydrophobic Organosilica Sol-Gel Foams" * |
| 杨洪兴等: "《绿色建筑发展与可再生能源应用》", 31 December 2016, 中国铁道出版社 * |
| 王国建等: "《建筑涂料与涂装》", 30 April 2002, 中国轻工业出版社 * |
| 章基凯: "《有机硅材料》", 31 October 1999, 中国物资出版社 * |
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Application publication date: 20220401 |