CN108017977B - Super-amphiphobic corrosion-resistant coating for rain gauge and preparation method thereof - Google Patents
Super-amphiphobic corrosion-resistant coating for rain gauge and preparation method thereof Download PDFInfo
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- 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
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
- C09D5/1618—Non-macromolecular compounds inorganic
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a super-amphiphobic corrosion-resistant coating for a rain gauge and a preparation method thereof, wherein the super-amphiphobic corrosion-resistant coating is formed by mixing the following raw materials in parts by weight: 40-60 parts of organic silicon epoxy resin, 5-10 parts of a curing agent, 10-20 parts of polytetrafluoroethylene, 10-20 parts of polyether ether ketone, 20-25 parts of polydopamine, 20-25 parts of nano polyaniline modified iron oxychloride, 5-10 parts of aluminum tripolyphosphate, 5-10 parts of talcum powder, 5-10 parts of nano silver particles, 1-3 parts of a silane coupling agent, 1-2 parts of a wetting agent, 0.5-2 parts of an antifoaming agent, 0.5-2 parts of a dispersing agent and 30-50 parts of n-butyl alcohol. The invention not only has the characteristics of good high temperature resistance, high pressure resistance, strong acid and strong alkali resistance, corrosion resistance and the like, but also has excellent hydrophobic and oleophobic properties and stain resistance, and can obviously improve the service life and the measurement precision of the rain gauge.
Description
Technical Field
The invention relates to the technical field of rain gauge anticorrosive coatings, in particular to a super-amphiphobic anticorrosive coating for a rain gauge and a preparation method thereof.
Background
The rain gauge is an important instrument for observing rainfall in the field, but under the condition that the existing rain gauge is placed in the field for a long time, the inner wall of a rain bearing device and a water receiving funnel of the rain gauge are very easy to corrode and are particularly easy to contaminate impurities, so that the service life of the rain gauge is influenced, and the measurement accuracy of the rain gauge is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the super-amphiphobic corrosion-resistant coating for the rain gauge and the preparation method thereof, and the super-amphiphobic corrosion-resistant coating has the characteristics of good high temperature resistance, high pressure resistance, strong acid and strong alkali resistance, corrosion resistance and the like, has excellent hydrophobic and oleophobic properties and antifouling property, and can obviously improve the service life and the measurement precision of the rain gauge.
The purpose of the invention is realized by the following technical scheme:
a super-amphiphobic corrosion-resistant coating for a rain gauge comprises the following raw materials in parts by weight:
40-60 parts of organic silicon epoxy resin,
5-10 parts of a curing agent,
10-20 parts of polytetrafluoroethylene,
10-20 parts of polyether-ether-ketone,
20-25 parts of polydopamine,
20-25 parts of nano polyaniline modified ferric oxychloride,
5-10 parts of aluminum tripolyphosphate,
5-10 parts of talcum powder,
5-10 parts of nano silver particles,
1-3 parts of a silane coupling agent,
1-2 parts of a wetting agent,
0.5 to 2 parts of a defoaming agent,
0.5 to 2 parts of a dispersant,
30-50 parts of n-butyl alcohol.
Preferably, the preparation method of the nano polyaniline modified ferric oxychloride comprises the following steps:
step A, adding 1-2 parts of iron oxychloride powder into 10-15 parts of aniline according to parts by weight, then carrying out ultrasonic dispersion for 6-8 hours, filtering, drying and grinding to obtain iron oxychloride aniline composite powder;
b, dispersing the iron oxychloride aniline composite powder in water, performing ultrasonic dispersion for 1-2 hours, adding 1mol/L hydrogen peroxide solution, stirring and dissolving by ultrasonic waves, dropwise adding alkylphenol polyoxyethylene ether, mechanically stirring for 6-8 hours, reacting for 12 hours in an ice water bath, and sequentially filtering, washing and drying to obtain nano polyaniline modified iron oxychloride; wherein the mass ratio of the addition amount of the hydrogen peroxide solution to the oxy-ferric chloride aniline compound powder is 15-20: 1; the addition amount of the alkylphenol polyoxyethylene accounts for 1% of the mass of the iron oxychloride aniline composite powder.
A method of preparing a super-amphiphobic corrosion-resistant coating for a rain gauge, comprising: mixing 40-60 parts of organic silicon epoxy resin, 10-20 parts of polytetrafluoroethylene, 10-20 parts of polyether ether ketone, 20-25 parts of polydopamine, 20-25 parts of nano polyaniline modified ferric chloride, 5-10 parts of aluminum tripolyphosphate, 5-10 parts of talcum powder, 5-10 parts of nano silver particles, 1-3 parts of silane coupling agent, 1-2 parts of wetting agent, 0.5-2 parts of defoaming agent, 0.5-2 parts of dispersing agent and 30-50 parts of n-butyl alcohol together to obtain a first component; and then uniformly mixing the first component with 5-10 parts of curing agent to prepare the super-amphiphobic corrosion-resistant coating for the rain gauge.
Preferably, the preparation method of the nano polyaniline modified ferric oxychloride comprises the following steps:
step A1, adding 1-2 parts of iron oxychloride powder into 10-15 parts of aniline according to parts by weight, then ultrasonically dispersing for 6-8 hours, filtering, drying and grinding to obtain iron oxychloride aniline composite powder;
a2, dispersing the iron oxychloride aniline composite powder in water, ultrasonically dispersing for 1-2 hours, adding 1mol/L hydrogen peroxide solution, ultrasonically stirring and dissolving, dropwise adding alkylphenol polyoxyethylene, mechanically stirring for 6-8 hours, reacting in an ice water bath for 12 hours, and sequentially filtering, washing and drying to obtain nano polyaniline modified iron oxychloride; wherein the mass ratio of the addition amount of the hydrogen peroxide solution to the oxy-ferric chloride aniline composite powder is 15-20: 1; the addition amount of the alkylphenol polyoxyethylene accounts for 1 percent of the mass of the iron oxychloride aniline composite powder.
According to the technical scheme provided by the invention, the super-amphiphobic corrosion-resistant coating for the rain gauge provided by the invention adopts organic silicon epoxy resin as a main film forming substance, and a curing agent, polytetrafluoroethylene, polyether-ether-ketone, polydopamine, nano polyaniline modified iron oxychloride, aluminum tripolyphosphate, talcum powder, nano silver particles, a silane coupling agent, a wetting agent, an antifoaming agent, a dispersing agent and n-butyl alcohol in a specific ratio are added, so that the super-amphiphobic corrosion-resistant coating provided by the invention not only has good characteristics of high temperature resistance, high pressure resistance, strong acid and alkali resistance, corrosion resistance and the like, but also has excellent hydrophobic, oleophobic performance and antifouling performance, and can obviously prolong the service life of the rain gauge and improve the measurement precision.
Detailed Description
The technical solutions in the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The super-amphiphobic corrosion-resistant coating for the rain gauge and the preparation method thereof provided by the present invention are described in detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
A super-amphiphobic corrosion-resistant coating for a rain gauge is prepared by mixing the following raw materials in parts by weight:
40-60 parts of organic silicon epoxy resin,
5-10 parts of a curing agent,
10-20 parts of polytetrafluoroethylene,
10-20 parts of polyether-ether-ketone,
20-25 parts of polydopamine,
20-25 parts of nano polyaniline modified ferric oxychloride,
5-10 parts of aluminum tripolyphosphate,
5-10 parts of talcum powder,
5-10 parts of nano silver particles,
1-3 parts of a silane coupling agent,
1-2 parts of a wetting agent,
0.5 to 2 parts of a defoaming agent,
0.5 to 2 parts of a dispersant,
30-50 parts of n-butyl alcohol.
Specifically, the preparation method of the super-amphiphobic corrosion-resistant coating for the rain gauge comprises the following steps: mixing 40-60 parts of organic silicon epoxy resin, 10-20 parts of polytetrafluoroethylene, 10-20 parts of polyether ether ketone, 20-25 parts of polydopamine, 20-25 parts of nano polyaniline modified ferric chloride, 5-10 parts of aluminum tripolyphosphate, 5-10 parts of talcum powder, 5-10 parts of nano silver particles, 1-3 parts of silane coupling agent, 1-2 parts of wetting agent, 0.5-2 parts of defoaming agent, 0.5-2 parts of dispersing agent and 30-50 parts of n-butyl alcohol together to obtain a first component; and then uniformly mixing the first component with 5-10 parts of curing agent to obtain the super-amphiphobic corrosion-resistant coating for the rain gauge. In practical application, the nano polyaniline modified ferric oxychloride is preferably prepared by the following preparation method, which specifically comprises the following steps:
and step A, adding 1-2 parts of iron oxychloride powder into 10-15 parts of aniline according to parts by weight, then carrying out ultrasonic dispersion for 6-8 hours, filtering, drying and grinding to obtain iron oxychloride aniline composite powder.
B, dispersing the iron oxychloride aniline compound powder in water, performing ultrasonic dispersion for 1-2 hours, adding 1mol/L hydrogen peroxide solution, stirring and dissolving by ultrasonic waves, dropwise adding alkylphenol polyoxyethylene ether, mechanically stirring for 6-8 hours, reacting in an ice water bath for 12 hours, and sequentially filtering, washing with deionized water and drying to obtain the easily-dispersed nano polyaniline modified iron oxychloride; wherein the mass ratio of the addition amount of the hydrogen peroxide solution to the oxy-ferric chloride aniline composite powder is 15-20: 1; the addition amount of the alkylphenol polyoxyethylene accounts for 1% of the mass of the iron oxychloride aniline composite powder.
Compared with the prior art, the super-amphiphobic corrosion-resistant coating for the rain gauge and the preparation method thereof provided by the invention have the following advantages:
(1) the super-amphiphobic corrosion-resistant coating for the rain gauge provided by the invention adopts the organic silicon epoxy resin as a main film forming substance, has the characteristics of high temperature resistance, high pressure resistance and corrosion resistance, and can be used for bearing the super-amphiphobic corrosion-resistant coating for the rain gauge for 96 hours under the severe conditions of 100 ℃ and 70MPA without the phenomena of bubbles, cracking, falling off and the like, so that the condition that the accuracy is influenced in the plateau testing process of the rain gauge can be effectively prevented.
(2) The polyether-ether-ketone adopted by the super-amphiphobic corrosion-resistant coating for the rain gauge provided by the invention has excellent self-lubricating property, high temperature resistance and chemical resistance, and the adopted polydopamine has good adhesion and hydrophobic properties.
(3) The nano polyaniline modified ferric oxychloride in the super-amphiphobic corrosion-resistant coating for the rain gauge organically combines the dual advantages of organic solids and nano structures, so that the super-amphiphobic corrosion-resistant coating has excellent corrosion resistance. Compared with the traditional ammonium persulfate as an oxidant, the polyaniline synthesized by a hydrogen peroxide system is adopted to prepare the nano polyaniline modified ferric oxychloride, and the nano polyaniline modified ferric oxychloride has good dispersibility in water and n-butyl alcohol, so that the super-amphiphobic corrosion-resistant coating for the rain gauge still shows good integrity and corrosion resistance after 2400h salt spray test, and other corrosion-resistant coatings have the phenomena of bubbles and rusting.
(4) The super-amphiphobic corrosion-resistant coating for the rain gauge, provided by the invention, has the advantages that the anti-fouling performance of the super-amphiphobic corrosion-resistant coating is improved by adding the nano silver particles, so that the service life of the super-amphiphobic corrosion-resistant coating is prolonged.
In conclusion, the embodiment of the invention has the characteristics of good high temperature resistance, high pressure resistance, strong acid and strong alkali resistance, corrosion resistance and the like, has excellent hydrophobic and oleophobic properties and antifouling property, and can obviously improve the service life and the measurement precision of the rain gauge.
In order to more clearly show the technical scheme and the technical effects provided by the invention, the super-amphiphobic corrosion-resistant coating for the rain gauge and the preparation method thereof provided by the invention are described in detail by specific examples.
Example 1
A super-amphiphobic corrosion-resistant coating for a rain gauge is prepared by the following steps: mixing 60 parts of organic silicon epoxy resin, 20 parts of polytetrafluoroethylene, 20 parts of polyether ether ketone, 25 parts of polydopamine, 25 parts of nano polyaniline modified ferric chloride, 10 parts of aluminum tripolyphosphate, 10 parts of talcum powder, 10 parts of nano silver particles, 3 parts of a silane coupling agent, 2 parts of a wetting agent, 2 parts of a defoaming agent, 2 parts of a dispersing agent and 50 parts of n-butyl alcohol together by weight to obtain a first component; and then uniformly mixing the first component with 10 parts of curing agent to obtain the super-amphiphobic corrosion-resistant coating.
Example 2
A super-amphiphobic corrosion-resistant coating for a rain gauge is prepared by the following steps: mixing 40 parts of organic silicon epoxy resin, 10 parts of polytetrafluoroethylene, 10 parts of polyether ether ketone, 20 parts of polydopamine, 20 parts of nano polyaniline modified ferric chloride, 5 parts of aluminum tripolyphosphate, 5 parts of talcum powder, 5 parts of nano silver particles, 10 parts of a silane coupling agent, 1 part of wetting agent, 0.5 part of defoaming agent, 0.5 part of dispersing agent and 30 parts of n-butyl alcohol together by weight to obtain a first component; and then uniformly mixing the first component with 5 parts of curing agent to obtain the super-amphiphobic corrosion-resistant coating.
Example 3
A super-amphiphobic corrosion-resistant coating for a rain gauge is prepared by the following steps: mixing 50 parts of organic silicon epoxy resin, 15 parts of polytetrafluoroethylene, 15 parts of polyether ether ketone, 20 parts of polydopamine, 20 parts of nano polyaniline modified ferric chloride, 7.5 parts of aluminum tripolyphosphate, 7.5 parts of talcum powder, 7.5 parts of nano silver particles, 2 parts of silane coupling agent, 2 parts of wetting agent, 1.5 parts of defoaming agent, 2 parts of dispersing agent and 30 parts of n-butyl alcohol together by weight to obtain a first component; and then the first component and 7.5 parts of curing agent are uniformly mixed, so that the super-amphiphobic corrosion-resistant coating is prepared.
Comparative example 1
A coating for a rain gauge, the method of making comprising: according to parts by weight, 60 parts of epoxy resin emulsion, 20 parts of polytetrafluoroethylene, 20 parts of polyether ether ketone, 25 parts of polydopamine, 25 parts of nano polyaniline modified ferric chloride, 10 parts of aluminum tripolyphosphate, 10 parts of talcum powder, 10 parts of nano silver particles, 3 parts of silane coupling agent, 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of dispersing agent and 50 parts of n-butyl alcohol are mixed together to obtain a first component; the first component was then mixed uniformly with 10 parts of a curing agent to produce a comparative corrosion-resistant coating.
Comparative example 2
A coating for a rain gauge, the method of making comprising: mixing 40 parts of organic silicon epoxy resin, 10 parts of polytetrafluoroethylene, 20 parts of nano polyaniline modified ferric chloride oxide, 5 parts of aluminum tripolyphosphate, 5 parts of talcum powder, 5 parts of nano silver particles, 10 parts of a silane coupling agent, 1 part of a wetting agent, 0.5 part of a defoaming agent, 0.5 part of a dispersing agent and 30 parts of n-butyl alcohol together to obtain a first component; and then the first component is uniformly mixed with 5 parts of curing agent, so as to prepare the comparative corrosion-resistant coating.
Comparative example 3
A coating for a rain gauge, the method of making comprising: mixing 60 parts of organic silicon epoxy resin, 20 parts of polytetrafluoroethylene, 20 parts of polyether ether ketone, 25 parts of polydopamine, 10 parts of aluminum tripolyphosphate, 10 parts of talcum powder, 10 parts of nano-silver particles, 3 parts of a silane coupling agent, 2 parts of a wetting agent, 2 parts of a defoaming agent, 2 parts of a dispersing agent and 50 parts of n-butyl alcohol together by weight to obtain a first component; the first component was then mixed uniformly with 10 parts of a curing agent to produce a comparative corrosion-resistant coating.
Comparative example 4
A corrosion-resistant coating for a rain gauge, the method of making comprising: mixing 50 parts of organic silicon epoxy resin, 15 parts of polytetrafluoroethylene, 15 parts of polyether ether ketone, 20 parts of polydopamine, 20 parts of nano polyaniline modified ferric chloride, 7.5 parts of aluminum tripolyphosphate, 7.5 parts of talcum powder, 2 parts of a silane coupling agent, 2 parts of a wetting agent, 1.5 parts of a defoaming agent, 2 parts of a dispersing agent and 30 parts of n-butyl alcohol together by weight to obtain a first component; the first component was then mixed uniformly with 7.5 parts of a curing agent to produce a comparative corrosion-resistant coating.
Performance detection
The following performance tests were carried out using the above inventive examples 1 to 3 and comparative examples 1 to 4:
(1) and (3) testing the precision of the rain gauge: 500g of deionized water was used to prepare simulated rainwater, and a rain gauge precision test was performed using a rain gauge coated with the above-described super-amphiphobic corrosion-resistant coating in examples 1 to 3 of the present invention or the comparative corrosion-resistant coating in comparative examples 1 to 4.
(2) And (3) anti-pollution test: 10kg of deionized water was used to prepare simulated rainwater, and a rain gauge coated with the above-described super-amphiphobic corrosion-resistant coating in examples 1 to 3 of the present invention or the comparative corrosion-resistant coating in comparative examples 1 to 4 was used to measure, followed by drying and weighing the amount of impurities stuck to the rain gauge. If the amount of the impurities is 10g or more, the result of the stain resistance test is poor; if the amount of the impurities is 5-10 g, the result of the anti-pollution test is good; if the amount of the impurity is 5g or less, the result of the stain resistance test is excellent.
(3) The results of the performance tests performed on examples 1 to 3 of the present invention and comparative examples 1 to 4 are shown in table 1 below:
TABLE 1
(4) The rain gauges of 5 different brands are randomly purchased on the market to carry out the performance test, and the result shows that the average value of the precision (%) of the rain gauge is 94, the average value of the contact angle of the inner wall of the rain gauge chamber and the inner wall of the funnel to water is 130, the average value of the contact angle to glycerin is 110, and the rain gauge falls off and wrinkles after the average salt fog resistance is 96 hours.
Specifically, at least the following conclusions can be drawn by comparing the results of the above performance tests:
(1) comparing inventive example 1 with comparative example 1, it can be seen that: the super-amphiphobic corrosion-resistant coating for the rain gauge provided by the invention adopts the organic silicon epoxy resin as a main film forming substance, so that the super-amphiphobic corrosion-resistant coating for the rain gauge can bear the severe conditions of 100 ℃ and 70MPA for 96 hours without the phenomena of bubbles, cracking, falling off and the like, and the condition that the accuracy is influenced in the plateau testing process can be effectively prevented.
(2) Comparing inventive example 2 with comparative example 2, it can be seen that: according to the super-amphiphobic corrosion-resistant coating for the rain gauge, the polyether-ether-ketone and the polydopamine are added simultaneously, so that the dispersibility of the polyether-ether-ketone is improved, and the hydrophobicity and oleophobicity of the super-amphiphobic corrosion-resistant coating are improved.
(3) Comparing inventive example 1 with comparative example 3, it can be seen that: the nano polyaniline modified ferric oxychloride in the super-amphiphobic corrosion-resistant coating for the rain gauge, provided by the invention, combines the dual advantages of organic solids and nano structures, so that the super-amphiphobic corrosion-resistant coating has excellent corrosion resistance. Compared with the traditional ammonium persulfate as an oxidant, the polyaniline synthesized by a hydrogen peroxide system is adopted to prepare the nano polyaniline modified ferric oxychloride, and the nano polyaniline modified ferric oxychloride has good dispersibility in water and n-butyl alcohol, so that the super-amphiphobic corrosion-resistant coating for the rain gauge still shows good integrity and corrosion resistance after 240h of a salt spray test, and other corrosion-resistant coatings have the phenomena of bubbles and rusting.
(4) Comparing example 3 of the present invention with comparative example 4, it can be seen that: the super-amphiphobic corrosion-resistant coating for the rain gauge, provided by the invention, has the advantages that the anti-fouling performance of the super-amphiphobic corrosion-resistant coating is improved by adding the nano silver particles, so that the service life of the super-amphiphobic corrosion-resistant coating is prolonged.
In conclusion, the embodiment of the invention has the characteristics of good high temperature resistance, high pressure resistance, strong acid and strong alkali resistance, corrosion resistance and the like, has excellent hydrophobic and oleophobic properties and antifouling property, and can obviously improve the service life and the measurement precision of the rain gauge.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The super-amphiphobic corrosion-resistant coating for the rain gauge is characterized by comprising the following raw materials in parts by weight:
40-60 parts of organic silicon epoxy resin,
5-10 parts of a curing agent,
10-20 parts of polytetrafluoroethylene,
10-20 parts of polyether-ether-ketone,
20-25 parts of polydopamine,
20-25 parts of nano polyaniline modified ferric oxychloride,
5-10 parts of aluminum tripolyphosphate,
5-10 parts of talcum powder,
5-10 parts of nano silver particles,
1-3 parts of a silane coupling agent,
1-2 parts of a wetting agent,
0.5 to 2 parts of a defoaming agent,
0.5 to 2 parts of a dispersant,
30-50 parts of n-butyl alcohol;
the preparation method of the nano polyaniline modified ferric oxychloride comprises the following steps:
step A, adding 1-2 parts of iron oxychloride powder into 10-15 parts of aniline according to parts by weight, then carrying out ultrasonic dispersion for 6-8 hours, filtering, drying and grinding to obtain iron oxychloride aniline composite powder;
b, dispersing the iron oxychloride aniline composite powder in water, performing ultrasonic dispersion for 1-2 hours, adding 1mol/L hydrogen peroxide solution, stirring and dissolving by ultrasonic waves, dropwise adding alkylphenol polyoxyethylene ether, mechanically stirring for 6-8 hours, reacting for 12 hours in an ice water bath, and sequentially filtering, washing and drying to obtain nano polyaniline modified iron oxychloride;
wherein the mass ratio of the addition amount of the hydrogen peroxide solution to the oxy-ferric chloride aniline composite powder is 15-20: 1; the addition amount of the alkylphenol polyoxyethylene accounts for 1% of the mass of the iron oxychloride aniline composite powder.
2. A preparation method of a super-amphiphobic corrosion-resistant coating for a rain gauge is characterized by comprising the following steps: mixing 40-60 parts of organic silicon epoxy resin, 10-20 parts of polytetrafluoroethylene, 10-20 parts of polyether ether ketone, 20-25 parts of polydopamine, 20-25 parts of nano polyaniline modified ferric chloride, 5-10 parts of aluminum tripolyphosphate, 5-10 parts of talcum powder, 5-10 parts of nano silver particles, 1-3 parts of silane coupling agent, 1-2 parts of wetting agent, 0.5-2 parts of defoaming agent, 0.5-2 parts of dispersing agent and 30-50 parts of n-butyl alcohol together to obtain a first component; uniformly mixing the first component with 5-10 parts of curing agent to prepare a super-amphiphobic corrosion-resistant coating for the rain gauge;
the preparation method of the nano polyaniline modified ferric oxychloride comprises the following steps:
step A1, adding 1-2 parts of iron oxychloride powder into 10-15 parts of aniline according to parts by weight, then ultrasonically dispersing for 6-8 hours, filtering, drying and grinding to obtain iron oxychloride aniline composite powder;
a2, dispersing the iron oxychloride aniline composite powder in water, ultrasonically dispersing for 1-2 hours, adding 1mol/L hydrogen peroxide solution, ultrasonically stirring and dissolving, dropwise adding alkylphenol polyoxyethylene, mechanically stirring for 6-8 hours, reacting in an ice water bath for 12 hours, and sequentially filtering, washing and drying to obtain nano polyaniline modified iron oxychloride;
wherein the mass ratio of the addition amount of the hydrogen peroxide solution to the oxy-ferric chloride aniline composite powder is 15-20: 1; the addition amount of the alkylphenol polyoxyethylene accounts for 1% of the mass of the iron oxychloride aniline composite powder.
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| CN105199553A (en) * | 2015-11-11 | 2015-12-30 | 江苏宇恒电气有限公司 | Wear-resistant and corrosion-resistant constant-force spring support-hanger |
| CN105419565A (en) * | 2015-12-28 | 2016-03-23 | 山东大学 | Modified environmentally-friendly heavy duty anticorrosion coating and preparation method thereof |
| CN106479288A (en) * | 2016-09-30 | 2017-03-08 | 合肥华运机械制造有限公司 | A kind of anticorrosive coating for chemical pump liner |
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| CN105199553A (en) * | 2015-11-11 | 2015-12-30 | 江苏宇恒电气有限公司 | Wear-resistant and corrosion-resistant constant-force spring support-hanger |
| CN105419565A (en) * | 2015-12-28 | 2016-03-23 | 山东大学 | Modified environmentally-friendly heavy duty anticorrosion coating and preparation method thereof |
| CN106479288A (en) * | 2016-09-30 | 2017-03-08 | 合肥华运机械制造有限公司 | A kind of anticorrosive coating for chemical pump liner |
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