CN113462199A - Preparation method of inorganic oxide pigment filler loaded with composite corrosion inhibitor - Google Patents
Preparation method of inorganic oxide pigment filler loaded with composite corrosion inhibitor Download PDFInfo
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- CN113462199A CN113462199A CN202110531226.4A CN202110531226A CN113462199A CN 113462199 A CN113462199 A CN 113462199A CN 202110531226 A CN202110531226 A CN 202110531226A CN 113462199 A CN113462199 A CN 113462199A
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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
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/40—Compounds of aluminium
- C09C1/407—Aluminium oxides or hydroxides
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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
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/40—Compounds of aluminium
- C09C1/42—Clays
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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
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
Abstract
A preparation method of inorganic oxide pigment filler loaded with composite corrosion inhibitor belongs to the technical field of preparation of anti-corrosion pigment filler. An inorganic oxide pigment filler loaded with a composite corrosion inhibitor comprises a component A and a component B. Wherein the component A is a composite corrosion inhibitor which comprises organic nitrogen (such as diazole, triazole, tetrazole and derivatives thereof), amine phosphate (ethanolamine phosphate, triethanolamine phosphate and the like) and inorganic trivalent cerium and phosphate compounds. Azole compounds have good corrosion inhibition effect on nonferrous metals such as copper, aluminum, magnesium and alloys thereof, and compounds such as amine phosphates, phosphates and the like have good corrosion inhibition effect on iron-based materials such as carbon steel, alloy steel and the like; the trivalent cerium compound has the function of promoting the passivation of the base material. The invention solves the problems of poor compatibility of the existing inorganic pigment and filler and an organic coating, no self-repairing function, complex preparation process of the micro-nano container, high cost and the like.
Description
Technical Field
The invention relates to a preparation method of an inorganic oxide pigment filler loaded with a composite corrosion inhibitor, belonging to the technical field of preparation of anti-corrosion pigment fillers.
Background
Organic coatings are one of the most common methods of controlling metal corrosion. However, organic coatings have poor abrasion resistance and are susceptible to damage. The pigment filler loaded with the composite corrosion inhibitor is added into the organic coating, so that the pigment filler loaded with the composite corrosion inhibitor is beneficial to the combination of an organic film forming substance and the pigment filler, the blocking capability to corrosive media is improved, and when the organic coating is damaged, the pigment filler loaded with the composite corrosion inhibitor can release the composite corrosion inhibitor and diffuse to the damaged part of the coating to play a role in inhibiting corrosion of a metal base material, and the corrosion resistance of the metal base material is improved.
Inorganic pigments and fillers are indispensable key components in organic coatings. Some inorganic pigments have a certain ability to passivate metal substrates, such as chromate, lead-based pigments, or metal pigments have a cathodic protection function due to a lower potential than the substrate, such as zinc powder. Therefore, they are widely used as anticorrosive pigments in anticorrosive coatings. In recent years, the corrosion inhibition filler taking the inorganic micro-nano container as a carrier is researched more, and the inorganic micro-nano container is smaller in size and can be better applied to thinner coatings. However, most of the micro-nano containers are difficult to synthesize and prepare, are in experimental research stage at present, and cannot be produced and applied in a large scale. Particularly, the compatibility between the inorganic micro-nano container and the organic coating is low, the binding force between the inorganic micro-nano container and the organic film forming material is often influenced, and the comprehensive protection performance of the coating is further related. If the corrosion inhibitor can be loaded based on the adsorption characteristic of the inorganic pigment, the pigment filler which has simple preparation process and can effectively improve the corrosion resistance of the coating is developed, and the method also has significance. Therefore, the invention develops a method for loading inorganic oxide pigment and filler with composite corrosion inhibition components, namely, the corrosion inhibitor is loaded on the inorganic oxide pigment and filler by utilizing the adsorption characteristic of the inorganic pigment. Thus, on one hand, the organic coating is used for improving the compatibility of the pigment and the filler and on the other hand, the organic coating added with the pigment and the filler has self-repairing performance when being damaged so as to prolong the service life of the organic coating.
Disclosure of Invention
The invention provides a preparation method of an inorganic oxide pigment filler loaded with a composite corrosion inhibitor. Aims to solve the problems of poor compatibility of the existing inorganic pigment filler and an organic coating, no self-repairing function, complex preparation process of a micro-nano container, high cost and the like.
The loading method of the corrosion inhibitor provided by the invention is suitable for various inorganic oxide pigments, including rutile type titanium dioxide, anatase type titanium dioxide and alpha-Al2O3，γ-Al2O3The corrosion inhibitor can be replaced according to the corrosion inhibition requirements of different base materials.
An inorganic oxide pigment filler loaded with a composite corrosion inhibitor is characterized in that:
comprises an A component and a B component. Wherein the component A is a composite corrosion inhibitor which comprises organic nitrogen (such as diazole, triazole, tetrazole and derivatives thereof), amine phosphate (ethanolamine phosphate, triethanolamine phosphate and the like) and inorganic trivalent cerium and phosphate compounds. Azole compounds have good corrosion inhibition effect on nonferrous metals such as copper, aluminum, magnesium and alloys thereof, and compounds such as amine phosphates, phosphates and the like have good corrosion inhibition effect on iron-based materials such as carbon steel, alloy steel and the like; the trivalent cerium compound has the function of promoting the passivation of the base material. For the protection of nonferrous metals, the proportion of the composite corrosion inhibitor is azole compounds: amine phosphates: phosphate salt: inorganic trivalent cerium compounds 30:5:0: 1; for the iron-based alloy material, the proportion of the azole compound is as follows: amine phosphates: phosphate salt: inorganic trivalent cerium compounds 30:10:5: 1; for passive metal protection, the ratio is azole compounds: amine phosphates: phosphate salt: inorganic trivalent cerium species are 10:10:5: 3. The component B has a BET specific surface area of more than 20m2g-1The inorganic oxide with certain adsorption characteristics comprises micro-nano rutile type titanium dioxide, anatase type titanium dioxide and alpha-Al2O3，γ-Al2O3And microporous silica, and porous ceramic materials such as diatomaceous earth, kaolin, cordierite, and the like. The mass ratio of the component A (corrosion inhibitor) to the component B (inorganic oxide) is (4-8): 10.
1. in the component A, the corrosion inhibitor can be a composite load of a plurality of corrosion inhibitors or a single load, and the corrosion inhibition effect of the composite load of the plurality of corrosion inhibitors is better. The corrosion inhibitor can enhance the compatibility between the inorganic oxide and the organic film forming matter of the coating and improve the corrosion resistance of the organic coating.
2. The azole corrosion inhibitor is widely applied to corrosion inhibition protection of nonferrous metals and alloys thereof. After the corrosion inhibitor is treated, a layer of complex protective film can be formed on the surface of the metal matrix, for example, Benzotriazole (BTA) can generate a complex (Cu2BTA) protective film on copper, and the further corrosion of the copper can be prevented. However, azole organics have some toxicity, so their use can be reduced by combining with other corrosion inhibitors. The phosphoric acid amine has amino and phosphate group, the amino is relatively active and is easy to participate in chemical reaction, and the phosphate group can enable the phosphoric acid amine to have good compatibility, so that the phosphoric acid amine can generally generate chemical reaction with metal atoms to generate covalent bonds and feedback structures, a compact protective film is formed on the metal surface, and the phosphoric acid amine and azole corrosion inhibitor can form good synergistic effect to improve the corrosion resistance of metal. The phosphate can form a phosphating protection film on the surface of the iron-based metal, and can be used for inhibiting corrosion of the iron-based material. The trivalent cerium compound belongs to corrosion inhibitors with oxidability. For non-passive metals, it is preferable to control the concentration to 5ppm or less, or to add no metal.
3. Titanium dioxide has good ultraviolet resistance, is nontoxic, has optimal whiteness and brightness, and is considered to be the best white pigment in the world nowadays. For micro-nano-grade titanium dioxide, the structure is porous, most of the titanium dioxide is mesoporous, and the titanium dioxide has a certain adsorption effect. The active alumina with adsorption function can be obtained by fully finely grinding and calcining the alumina at controlled temperature. For microporous silica, diatomite and porous ceramic materials, such as porous cordierite, etc., materials with better adsorption function can be obtained because the materials are porous materials and have certain adsorption effect or are subjected to chemical treatment. Therefore, the corrosion inhibitor is loaded by utilizing the adsorption characteristic of the inorganic oxide, and the method has the advantages of simple process and low cost. The following process was used for the loading of the corrosion inhibitor.
The preparation method comprises the following steps:
(1) b, pretreatment of the component: the inorganic oxide pigment is micro-nano powder, and the particle size is required to be 100 nm-10 mu m. And (3) grinding the purchased inorganic oxide pigment for at least 6 hours by using a fast dispersion tester according to the requirement to meet the use requirement.
(2) Preparing a B component dispersion liquid: the volume ratio of the components is 1: 9, mixing ethanol and deionized water to obtain a dispersion medium, adding the inorganic oxide micro-nano powder in the step (1) into the dispersion medium to prepare a B component dispersion liquid with the mass fraction of 40%, and fully dispersing for 2 hours by using a rapid dispersion tester for later use.
(3) Mixing the components A and B: according to actual requirements, weighing a certain mass of the component A corrosion inhibitor in proportion, and adding the component A corrosion inhibitor into the component B dispersion liquid to obtain a mixture of the component A and the component B with a determined mass ratio. And fully dispersing for 2 hours by using a fast dispersion tester again to obtain the uniformly dispersed emulsion. And (4) distilling the solution to dryness under reduced pressure, and putting the solution into an oven for full drying at the temperature of 80 ℃ to obtain the inorganic oxide pigment filler loaded with the corrosion inhibitor.
(4) And (3) color filler retreatment: and grinding the obtained inorganic oxide pigment filler loaded with the corrosion inhibitor for 6 hours by using a fast dispersion tester again to obtain the micro-nano powder pigment loaded with the corrosion inhibitor, wherein the particle size of the micro-nano powder pigment is 100 nm-10 mu m, and the micro-nano powder pigment is used as the pigment filler of the anticorrosive coating.
(5) Non-ferrous metal alloy such as aluminum, copper, magnesium and the like and iron-based material such as carbon steel, alloy steel and the like are taken as protective base materials, and the prepared pigment powder loaded with the corrosion inhibitor is taken as pigment filler of the coating. Different organic coatings (epoxy anticorrosive coating and polyurethane anticorrosive coating) containing the loaded corrosion inhibitor pigment can be prepared according to a certain pigment ratio (1-2:5-7, m/m). The coating can be uniformly applied to the substrate by spraying with a spray gun or brushing.
Detailed Description
The technical solutions of the present invention are further described below with examples so that those skilled in the art can better understand the present invention. The examples of the present invention will show a specific preparation method by specifically describing a class of substances, but the corresponding corrosion inhibitors and inorganic pigments can be replaced by other similar substances, which will not be listed. It should be noted that modifications made by workers skilled in the art, which are not in the specific embodiment of the present invention, are included within the scope of the present invention without departing from the principle of the present invention.
Example 1
(1) Grinding rutile type titanium dioxide for 6 hours by using a fast dispersion tester to obtain micro-nano powder with the particle size of 100 nm-10 mu m.
(2) The volume ratio of the components is 1: 9, mixing the ethanol and the deionized water to form a dispersion medium, adding the rutile type titanium dioxide in the step (1) into the dispersion medium according to the mass fraction of 40%, and fully dispersing for 2 hours by using a rapid dispersion tester to prepare a rutile type titanium dioxide dispersion liquid for later use.
(3) Taking 4g of benzotriazole serving as an azole corrosion inhibitor, adding the benzotriazole into 25g of 40% rutile titanium dioxide dispersion liquid, and fully dispersing for 2h by using a rapid dispersion tester to obtain a mixture of a (corrosion inhibitor) and a (titanium dioxide) component with the mass ratio of 2:5 in the form of an emulsion. And (3) distilling the solution to dryness under reduced pressure, and putting the solution into an oven for full drying at the temperature of 80 ℃ to obtain rutile type titanium dioxide loaded with the benzotriazole corrosion inhibitor. And grinding for 6 hours by using a quick grinding machine again to obtain rutile type titanium dioxide which meets the requirement and is loaded with the benzotriazole corrosion inhibitor and has the grain diameter of 100 nm-10 mu m. Finally, the coating is used as a pigment filler of an anticorrosive coating for standby.
Note that this example is a preparation method of rutile titanium dioxide supported single component corrosion inhibitor pigment filler, and the prepared material is marked as pigment filler No. 1. Similarly, the titanium dioxide pigment and filler respectively loaded with single-component corrosion inhibitors such as phosphoric acid amines (such as ethanolamine phosphate), inorganic trivalent cerium (such as cerium nitrate) and phosphate compounds (such as sodium phosphate) can be prepared by adopting the process for preparing the rutile titanium dioxide loaded with the benzotriazole corrosion inhibitor, and the titanium dioxide pigment and filler are respectively marked as No. 2 pigment, No. 3 pigment and No. 4 pigment and filler. Similarly, the titanium dioxide may be replaced with anatase type titanium dioxide, α -Al2O3，γ-Al2O3Microporous silica, etc., the method and the loading ratio are not changed,and preparing the pigment and filler loaded with the corrosion inhibitor.
Example 2
(1) And grinding the cordierite porous ceramic material for 6 hours by using a fast dispersion tester to obtain micro-nano powder with the particle size of 100 nm-10 mu m.
(2) The volume ratio of the components is 1: 9, mixing the ethanol and the deionized water to obtain a dispersion medium, adding the porous ceramic material in the step (1) into the dispersion medium according to the mass fraction of 40%, and fully dispersing for 2 hours by using a rapid dispersion tester to obtain a porous ceramic material dispersion liquid for later use.
(3) Taking 8g of benzotriazole as an azole corrosion inhibitor. Adding the mixture into 25g of porous ceramic material dispersion liquid with the mass fraction of 40%, and fully dispersing for 2h by using a fast dispersion tester again to obtain a mixture with the mass ratio of A (corrosion inhibitor) to B (cordierite porous ceramic material) being 4: 5 in the form of an emulsion. And distilling the solution to dryness under reduced pressure, and putting the solution into an oven for full drying at the temperature of 80 ℃ to obtain the cordierite porous ceramic material loaded with the benzotriazole corrosion inhibitor. And grinding for 6 hours by using a quick grinding machine again to obtain the porous ceramic material with the grain diameter of 100 nm-10 mu m meeting the requirement. Finally, the coating is used as a pigment filler of an anticorrosive coating for standby.
Note that this example is a preparation method of cordierite porous ceramic material loaded with single component corrosion inhibitor pigment filler, and the prepared filler is labeled as No. 5 pigment filler. Similarly, the cordierite porous ceramic materials respectively loaded with amine phosphates (such as ethanolamine phosphate), inorganic trivalent cerium compounds (such as cerium nitrate) and phosphate compounds (such as sodium phosphate) are prepared by adopting the process for preparing the cordierite porous ceramic materials loaded with the benzotriazole corrosion inhibitor, and are respectively marked as No. 6, No. 7 and No. 8 pigments. Similarly, the cordierite porous ceramic material can be replaced by porous ceramic materials such as diatomite, kaolin and the like, and the method and the loading proportion are not changed to obtain the pigment and filler loaded with the corrosion inhibitor.
Example 3
(1) Grinding rutile type titanium dioxide for 6 hours by using a fast dispersion tester to obtain micro-nano powder with the particle size of 100 nm-10 mu m.
(2) The volume ratio of the components is 1: 9, mixing the ethanol and the deionized water to form a dispersion medium, adding the rutile type titanium dioxide in the step (1) into the dispersion medium according to the mass fraction of 40%, and fully dispersing for 2 hours by using a rapid dispersion tester to prepare a rutile type titanium dioxide dispersion liquid for later use.
(3) According to the mass ratio of 30:10:5:1, mixing benzotriazole, ethanolamine phosphate, sodium phosphate and cerium nitrate to 4g, adding the mixture into 25g of rutile type titanium dioxide dispersion liquid with the mass fraction of 40%, and fully dispersing for 2h by using a rapid dispersion tester to obtain a component A (corrosion inhibitor) and a component B (titanium dioxide) with the mass ratio of 2:5 in the form of an emulsion. And (3) distilling the solution to dryness under reduced pressure, and putting the solution into an oven for full drying at the temperature of 80 ℃ to obtain the rutile type titanium dioxide loaded with the composite corrosion inhibitor. And grinding for 6 hours by using a quick grinding machine again to obtain the rutile type titanium dioxide which meets the requirement and is loaded with the composite corrosion inhibitor and has the grain diameter of 100 nm-10 mu m. Finally, the coating is used as a pigment filler of an anticorrosive coating for standby.
Note that this example is a preparation method of rutile titanium dioxide supported composite corrosion inhibitor pigment filler, and the prepared filler is marked as No. 9 filler. Similarly, by adopting the process for preparing rutile type titanium dioxide loaded with the composite corrosion inhibitor, titanium dioxide respectively loaded with two-component composite corrosion inhibitors (such as benzotriazole and ethanolamine phosphate composite corrosion inhibitor with the mass ratio of 3: 1) and three-component composite corrosion inhibitors (such as benzotriazole, ethanolamine phosphate and cerium salt composite corrosion inhibitor with the mass ratio of 30:10: 1) can be prepared and marked as No. 10 and No. 11 pigment fillers respectively. Similarly, the titanium dioxide may be replaced with anatase type titanium dioxide, α -Al2O3，γ-Al2O3Microporous silicon dioxide and the like, and the method and the loading proportion are not changed, so that the pigment and filler loaded with the corrosion inhibitor is prepared.
Example 4
(1) And grinding the cordierite porous ceramic material for 6 hours by using a fast dispersion tester to obtain micro-nano powder with the particle size of 100 nm-10 mu m.
(2) The volume ratio of the components is 1: 9, mixing the ethanol and the deionized water to obtain a dispersion medium, adding the porous ceramic material in the step (1) into the dispersion medium according to the mass fraction of 40%, and fully dispersing for 2 hours by using a rapid dispersion tester to obtain a porous ceramic material dispersion liquid for later use.
(3) According to the mass ratio of 30:10:5:1, mixing 8g of benzotriazole, ethanolamine phosphate, sodium phosphate and cerium nitrate, adding the mixture into 25g of porous ceramic material dispersion liquid with the mass fraction of 40%, and fully dispersing for 2h by using a rapid dispersion tester to obtain a mixture of a (corrosion inhibitor) and a (cordierite porous ceramic material) with the component mass ratio of 4: 5 in the form of an emulsion. And distilling the solution to dryness under reduced pressure, and putting the solution into an oven for full drying at the temperature of 80 ℃ to obtain the composite corrosion inhibitor loaded cordierite porous ceramic material. And grinding for 6 hours by using a quick grinding machine again to obtain the porous ceramic material with the grain diameter of 100 nm-10 mu m meeting the requirement. Finally, the coating is used as a pigment filler of an anticorrosive coating for standby.
Note that this example is a preparation method of cordierite porous ceramic material loaded with composite corrosion inhibitor pigment filler, and the prepared filler is labeled as filler No. 12. Similarly, by adopting the process for preparing the composite corrosion inhibitor-loaded cordierite porous ceramic material, the cordierite porous ceramic material respectively loaded with the two-component composite corrosion inhibitor (such as a benzotriazole and ethanolamine phosphate composite corrosion inhibitor with a mass ratio of 3: 1) and the cordierite porous ceramic material loaded with the three-component composite corrosion inhibitor (such as a benzotriazole, ethanolamine phosphate and cerium salt composite corrosion inhibitor with a mass ratio of 30:10: 1) can be prepared, and the cordierite porous ceramic materials are respectively marked as No. 13 and No. 14 pigments. Similarly, the cordierite porous ceramic material can be replaced by porous ceramic materials such as diatomite, kaolin and the like, and the pigment and filler loaded with the corrosion inhibitor is prepared by the method and the loading proportion unchanged.
Example 5
Epoxy polyamide is taken as a curing agent, and the epoxy polyamide and epoxy resin are mixed according to the mass ratio of 1: 1 as an organic film-forming substance, and mixing the components according to a face ratio (mass ratio) of 1: 5, mixing the No. 1 to No. 14 pigment fillers in the above examples with epoxy resin respectively to prepare epoxy resin paint. For convenient spraying, the No. 3, 4, 7 and 8 pigments are mixed by ethanol and water in a volume ratio of 1: 9, 1, 2, 5, 6, 9, 10, 11, 12, 13 and 14 pigments are diluted by xylene and butanol in a volume ratio of 7: 3, diluting the mixture into slurry with the mass fraction of 40%, uniformly coating the slurry on the surface of the carbon steel by using a spray gun, naturally drying the carbon steel for 0.5 hour in the air, putting the carbon steel into an oven, continuously drying the carbon steel for 2 hours at the temperature of 80 ℃, then spraying the carbon steel again, and circulating the steps for three times to correspondingly obtain No. 1-14 coatings. An X-type scratch is made on the surface of the coating by a BGD 1285 standard scratcher, a neutral salt spray test is carried out in a NaCl solution with the mass fraction of 5%, and the test shows that the corrosion time of the No. 1-14 coating is respectively 5h, 6h, 3h, 4h, 5h, 7h, 4h, 5h, 60h, 10h, 24h, 65h, 15h and 26 h. The salt spray test was carried out in the same manner for epoxy coatings without corrosion inhibitors, and corrosion occurred at 1 h. Therefore, the addition of the loading corrosion inhibitor filler has a repairing effect on the organic coating. The salt spray resistance time of the added coating loaded with the composite corrosion inhibitor filler is over 60 hours, which shows that the salt spray resistance of the added coating loaded with the composite corrosion inhibitor filler is better. Similarly, replacing the organic film forming substance with polyurethane, preparing a polyurethane coating, coating the polyurethane coating on the surface of the carbon steel, manually making scratches, and performing a salt spray test to obtain a result which is consistent with the rule of the epoxy resin coating, wherein the salt spray resistance of the coating loaded with the composite corrosion inhibitor filler is optimal.
Claims (5)
1. A preparation method of inorganic oxide pigment filler loaded with composite corrosion inhibitor is characterized by comprising the following steps:
the filler comprises a component A and a component B; wherein the component A is a corrosion inhibitor which comprises one or more of organic azoles, amine phosphates, inorganic trivalent cerium and phosphate compounds;
the component B has a BET specific surface area of more than 20m2g-1The inorganic oxide of (A) is micro-nano grade rutile type, anatase type titanium dioxide, alpha-Al2O3，γ-Al2O3And microporous silica, diatomaceous earth, kaolin, or cordierite;
the mass ratio of the component A to the component B is (4-8): 10.
2. the method of claim 1, wherein: the organic azole is a diazole, a triazole, a tetrazole or a derivative.
3. The method of claim 1, wherein: the phosphoric acid amine is ethanolamine phosphate or triethanolamine phosphate.
4. The method of claim 1, wherein: according to the mass ratio of 30:10:5:1, mixing benzotriazole, ethanolamine phosphate, sodium phosphate and cerium nitrate to form a composite corrosion inhibitor; or the mass ratio is 3: 1, or the mass ratio of benzotriazole to ethanolamine phosphate composite corrosion inhibitor is 30:10: 1 benzotriazole, ethanolamine phosphate and cerium salt composite corrosion inhibitor.
5. The method of claim 1, comprising the steps of:
1) b, pretreatment of the component: the inorganic oxide pigment is micro-nano powder, and the particle size is required to be 100 nm-10 mu m;
2) preparing a B component dispersion liquid: the volume ratio of the components is 1: 9, mixing ethanol and deionized water to obtain a dispersion medium, adding the inorganic oxide pigment in the step 1) into the dispersion medium to prepare a B component dispersion liquid with the mass fraction of 40%, and dispersing for 2 hours for later use;
3) mixing the components A and B: the weight ratio of (4-8): 10 weighing the component A corrosion inhibitor, adding the component A corrosion inhibitor into the component B dispersion liquid, and dispersing for 2 hours to obtain uniformly dispersed emulsion; distilling the solution to dryness under reduced pressure, and fully drying in an oven at 80 ℃ to obtain the inorganic oxide pigment filler loaded with the corrosion inhibitor;
4) and (3) color filler retreatment: grinding the obtained inorganic oxide pigment filler loaded with the corrosion inhibitor for 6 hours again to obtain the micro-nano powder pigment loaded with the corrosion inhibitor, wherein the particle size of the micro-nano powder pigment is 100 nm-10 mu m, and the micro-nano powder pigment is used as the pigment filler of the anticorrosive coating;
5) the prepared pigment powder loaded with the corrosion inhibitor is used as the pigment filler of the coating; according to the face ratio of 1-2:5-7 mixing pigment and resin; adding a coating additive and a solvent to obtain the anticorrosive coating; wherein, the pigment-to-resin mass ratio is a professional term; and (3) carrying out coating construction by adopting a spray gun spraying or brushing mode, and uniformly coating the coating on the base material.
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| CN115449250A (en) * | 2022-09-14 | 2022-12-09 | 中昊北方涂料工业研究设计院有限公司 | Conductive filler added with corrosion inhibitor and preparation method thereof |
| CN115838544A (en) * | 2022-11-18 | 2023-03-24 | 浙江丰虹新材料股份有限公司 | Modified phyllosilicate novel barrier shielding pigment and preparation method thereof |
| CN116426193A (en) * | 2023-04-06 | 2023-07-14 | 郑州艾洁环保设备科技有限公司 | Water-based environment-friendly anticorrosive paint |
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| CN116426193A (en) * | 2023-04-06 | 2023-07-14 | 郑州艾洁环保设备科技有限公司 | Water-based environment-friendly anticorrosive paint |
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