CN111087842A - Preparation method of waterproof and anticorrosive antirust paint - Google Patents
Preparation method of waterproof and anticorrosive antirust paint Download PDFInfo
- Publication number
- CN111087842A CN111087842A CN201911271111.5A CN201911271111A CN111087842A CN 111087842 A CN111087842 A CN 111087842A CN 201911271111 A CN201911271111 A CN 201911271111A CN 111087842 A CN111087842 A CN 111087842A
- Authority
- CN
- China
- Prior art keywords
- water
- putting
- preparation
- prepare
- antirust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of paint preparation, and particularly relates to a preparation method of a waterproof and anticorrosive antirust paint. The method comprises the steps of firstly drying, crushing and mixing cotton and crop straws, mixing and stirring other self-made protective agents, antirust auxiliaries, water, organic solvents and other auxiliaries to prepare a prefabricated mixed solution, mixing the prefabricated mixed solution, aluminum tripolyphosphate, triethylamine and other raw materials to obtain the water-resistant anticorrosive antirust paint, crushing and blending the cotton and the crop straws, extracting fiber components from the cotton and the crop straws through high-temperature reaction of hydrochloric acid and alkali liquor, hydrolyzing the fiber components under high temperature and high pressure and in an alkali liquor environment, improving the contact degree of the fiber and each component in the antirust paint, and adjusting the pH value to enhance the waterproof performance and the mechanical strength of the fiber; the cotton and crop straws are subjected to enzymolysis by cellulase and oxidized by sulfuric acid solution and potassium permanganate, so that the aluminum simple substance is dispersed in the fiber components, the rust prevention, water prevention and corrosion prevention performances of the antirust paint are improved, and the antirust paint has a wide application prospect.
Description
Technical Field
The invention belongs to the technical field of paint preparation, and particularly relates to a preparation method of a waterproof and anticorrosive antirust paint.
Background
The antirust paint is a paint capable of protecting metal surface from chemical or electrochemical corrosion of atmosphere, sea water, etc.
The water-based metal antirust paint is prepared by compounding a metal strong chelating agent phytic acid ester serving as a main component and other water-based auxiliary agents. The phytate is a natural non-toxic organic chemical product extracted from grain crops, and when the phytate is used as a magnetic material antirust agent, the phytate can be quickly chelated with metal on the surface to form a layer of compact monomolecular complex protective film, so that the corrosion of the metal can be effectively inhibited. The surface of the material treated by the product keeps original color, and can enter the next working procedures of coating and the like without washing.
The antirust pigment is an important component of the antirust paint, the physical antirust pigment is a pigment with stable chemical property, the physical antirust pigment depends on the physical property of the physical antirust pigment, the chemical property is stable, the texture is hard, the particles are fine, the filling property is excellent, the compactness of a paint film is improved, the permeability of the paint film is reduced, so that the antirust effect is achieved, the iron oxide red belongs to the substance, and the antirust property of the metal aluminum powder is that the aluminum powder has a scale-shaped structure, so that the paint film is compact, the ultraviolet light reflecting capacity is strong, and the anti-aging capacity of the paint film can be improved.
The technical level of the water-based paint in China has a large gap with developed countries, no mature technology exists at home so far, key materials such as high-performance water-based resin and the like depend on import, and the high-efficiency water-based additive is almost blank. In the aspect of water-based paint production, large-scale paint manufacturers in China are mostly limited to producing a certain amount of building latex paint and water-soluble electrophoretic paint. The annual total amount of the domestic coating is about 1400 million tons, but the total yield of the water-based industrial coating is less than 5 percent of the total yield of the coating, and the market share is far lower than the level of more than 50 percent in developed countries.
At present, domestic industrial coatings mainly comprise solvent-based coatings such as alkyd coatings, nitro coatings, epoxy coatings and the like, and the coatings have the biggest defects of environmental pollution, flammability and harm to human bodies. The water-based antirust paint can effectively overcome the defects of solvent-based paint, accords with the development of the current paint, and has great significance in realizing the technical breakthrough of industrial antirust paint. Compared with corresponding solvent-based coatings, most of the water-based antirust paints used in the current market have the conditions of poor antirust performance and poor initial water resistance, and the popularization and application of the water-based antirust paints in the market are hindered.
The water-based antirust paint has been widely paid attention and researched by people because the water-based antirust paint can effectively prevent the surface of steel from being rusted, and the antirust principle of the water-based antirust paint is that a stable inhibiting compound is generated by the reaction of a reactive group in resin or an antirust agent contained in the water-based antirust paint and a component in a rust layer, so that the rust layer forms a stable and protective filler to prevent the rust from further expanding, and the antirust effect is realized. However, the existing water-based antirust paint has poor water resistance, and the solution generates oxidation reaction when contacting water for a long time, so that steel is corroded.
The epoxy antirust paint has the functions of corrosion resistance, water resistance, chemical resistance, light resistance, temperature resistance and the like, and can prevent or delay the occurrence and development of the damage phenomena and prolong the service life of the material when being coated on the surface of an object to form a layer of protective film. The epoxy antirust paint can be sprayed, brushed and rolled, can be adjusted to be free from flowing after being greatly adhered by using a special diluent for the epoxy antirust paint, has excellent outdoor durability, good mechanical strength and good decoration, and can be used for coating the surfaces of outdoor steel structures, large-scale mechanical equipment and the like to play a role in decoration and protection. The epoxy antirust paint is a two-component paint, is coated after being mixed, is self-dried at normal temperature, can also be quickly dried at low temperature, and has the advantages of good paint film adhesion, high hardness, good outdoor durability, good gloss retention, good color retention, difficult yellowing, rich color and good dirt resistance. The epoxy antirust paint has the functions of electrical insulation, electrical conduction, electromagnetic wave shielding, static electricity generation prevention and the like; the biological chemistry aspects of mildew prevention, sterilization, disinsection, marine organism adhesion prevention, etc.
When the traditional steel structure is subjected to anticorrosive treatment by using paint, the antirust paint is used as a primer. Among them, red lead rust preventive paint, mica iron rust preventive paint, zinc ash rust preventive paint, iron red rust preventive primer, etc. are most commonly used, and among them, red lead rust preventive paint has the best performance, but the cost is higher than other primers. In addition, the main component of the rust-proof pigment red lead powder in the red lead rust-proof coating is lead tetraoxide, so that great harm is caused to people and environment in the processes of manufacturing, using, clearing and the like.
The existing antirust paint comprises the following components: poor antirust performance, poor water resistance, poor corrosion resistance and the like.
Therefore, the invention of the excellent antirust paint has positive significance in the field of paint preparation.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the defects of poor antirust performance, poor waterproof performance and poor anticorrosive performance of the existing antirust paint, the preparation method of the waterproof anticorrosive antirust paint is provided.
In order to solve the technical problems, the invention adopts the technical scheme that:
a preparation method of a waterproof and anticorrosive antirust paint is characterized by comprising the following specific preparation steps:
putting a self-made protective agent, an antirust auxiliary agent, polyamide resin, acrylic acid, ammonium polymethacrylate and deionized water into a stirrer, stirring for 30-40 min at the rotating speed of 1200-1500 r/min to prepare a prefabricated mixed solution, putting the prefabricated mixed solution, water, aluminum tripolyphosphate, triethylamine and talcum powder into the stirrer, and stirring for 20-30 min at the rotating speed of 1000-1200 r/min to obtain the water-resistant anticorrosive antirust paint;
the preparation method of the self-made protective agent comprises the following specific steps:
(1) putting cotton and crop straws into an oven, drying for 2-3 h at the temperature of 60-70 ℃, putting the cotton and the crop straws into a crusher for crushing and mixing to prepare a mixed material, putting the mixed material and hydrochloric acid with the mass fraction of 5-10% into a beaker, stirring for 30-40 min at the rotating speed of 120-150 r/min by using a stirring device, and standing for 5-6 h to prepare a solid-liquid mixture;
(2) placing a beaker in a resistance heating sleeve, dropwise adding 8-12% sodium hydroxide solution into the beaker, raising the temperature of the heating sleeve to 80-100 ℃ after dropwise adding, heating at constant temperature for 60-80 min to prepare reaction slurry, and putting the reaction slurry and silicon dioxide powder into a reaction kettle according to the mass ratio of 50: 1;
(3) filling nitrogen into a reaction kettle to increase the pressure in the reaction kettle to 1.0-1.2 MPa, increasing the temperature in the reaction kettle to 280-300 ℃, reacting at constant temperature and constant pressure for 100-120 min to obtain a hot reactant, putting the hot reactant into a beaker, dropwise adding hydrochloric acid with the mass fraction of 10-15% into the beaker to adjust the pH value to 9-10, placing the beaker into a vacuum drying oven, and standing for 2-3 h under the conditions of the vacuum degree of 100-200 Pa and the temperature of 50-60 ℃ to obtain a self-made protective agent;
the rust-proof auxiliary agent is prepared by the following specific steps:
(1) putting the mixed material and distilled water into a beaker, putting the beaker into a water bath kettle with a water bath temperature of 80-100 ℃, stirring for 50-60 min at a rotating speed of 600-700 r/min by using a stirring device to prepare a mixed solution, putting the mixed solution and cellulase into an enzymolysis tank, and putting the enzymolysis tank into a greenhouse with an indoor temperature of 32-36 ℃ for standing for 10-12 h to prepare an enzymolysis reactant;
(2) putting an enzymolysis reactant and a sulfuric acid solution with the mass fraction of 20-30% into a reaction kettle, raising the temperature in the reaction kettle to 45-50 ℃, stirring for 30-40 min at the rotating speed of 600-700 r/min by using a stirrer to prepare an acidic reaction solution, adding potassium permanganate powder with the mass of 3-5% of the acidic reaction solution into the reaction kettle, and stirring for 30-40 min at the rotating speed of 600-700 r/min by using a stirring device to prepare an oxidation reaction solution;
(3) putting the oxidation reaction liquid and aluminum chloride powder into a three-neck flask, placing the three-neck flask into an ultrasonic oscillator, oscillating for 1-2 hours under the condition that the frequency is 32-36 kHz to prepare reaction slurry, adding copper powder into the three-neck flask, continuing oscillating for 3-5 hours, filtering after oscillating to obtain a filter cake, and cleaning the filter cake with distilled water for 3-5 times to prepare the antirust auxiliary agent.
Preferably, the self-made protective agent is 5-7 parts by weight, the antirust assistant is 2-4 parts by weight, the polyamide resin is 15-18 parts by weight, the acrylic acid is 10-12 parts by weight, the ammonium polymethacrylate is 6-8 parts by weight, and the deionized water is 7-10 parts by weight.
Preferably, the prefabricated mixed liquid comprises, by weight, 50-55 parts of prefabricated mixed liquid, 6-10 parts of water, 0.5-0.7 part of aluminum tripolyphosphate, 0.3-0.5 part of triethylamine and 0.2-0.3 part of talcum powder.
The mass ratio of the cotton to the crop straws in the specific preparation step (1) of the self-made protective agent is 5: 1.
The mass ratio of the mixed material to 5-10% hydrochloric acid in the specific preparation step (1) of the self-made protective agent is 1: 10.
The specific preparation method of the self-made protective agent comprises the step (2) of dropwise adding a sodium hydroxide solution with the mass fraction of 8-12% into a beaker, wherein the mass of the sodium hydroxide solution is 20-25% of that of the solid-liquid mixture.
The mass ratio of the mixed material and the distilled water in the specific preparation step (1) of the antirust additive is 1: 5.
The mass ratio of the mixed liquor and the cellulase in the specific preparation step (1) of the antirust additive is 50: 1.
The mass ratio of the enzymolysis reactant to the sulfuric acid solution with the mass fraction of 20-30% in the specific preparation step (2) of the antirust additive is 10: 1.
The specific preparation method of the antirust additive comprises the step (3) that the mass ratio of the oxidation reaction liquid to the aluminum chloride powder is 20:1, and the mass of copper powder added into the three-neck flask is 3-5% of the mass of the reaction slurry.
The beneficial technical effects of the invention are as follows:
(1) the invention firstly dries, crushes and mixes cotton and crop straws to prepare a mixed material, then mixes and stirs the mixed material and hydrochloric acid to prepare a solid-liquid mixture, then adds sodium hydroxide solution to heat at high temperature, then adds silicon dioxide to react at high temperature and high pressure, adjusts the pH value after the reaction and then concentrates and dries to prepare a self-made protective agent, also mixes the mixed material and distilled water, then adds cellulase to carry out enzymolysis to prepare an enzymolysis reactant, then adds sulfuric acid to mix, adds potassium permanganate to react after mixing to prepare an oxidation reaction liquid, then adds aluminum chloride to stir, adds copper powder to mix after stirring, filters and washes to prepare an antirust additive, finally mixes and stirs the self-made protective agent, the antirust additive, water, organic solvent and other additives to prepare a prefabricated mixed liquid, then mixes the prefabricated mixed liquid, aluminum tripolyphosphate, triethylamine and other raw materials to obtain the water-resistant and anticorrosive antirust, the invention crushes and mixes cotton and crop straws, extracts fiber components from the cotton and the crop straws through the high-temperature reaction of hydrochloric acid and alkali liquor, adds silicon dioxide after dissolving in the alkali liquor, dissolving silicon dioxide under high temperature and high pressure and in alkali solution to generate silicate component, fully dispersing in the solution to bond with fiber component, at the same time, the fiber components are further hydrolyzed under the environment of high temperature and high pressure and alkali liquor to generate fiber components with shorter molecular chains, thereby improving the specific surface area of fiber components, improving the contact degree of the fiber and each component in the antirust paint, adjusting the pH value to regenerate silicon dioxide molecules in the fiber, the waterproof performance and the mechanical strength of the fiber are enhanced by filling the silicon dioxide molecules in the fiber components, plant fibers are covered on the surface of the antirust paint to provide a protective effect for the antirust paint and enhance the antirust performance;
(2) according to the invention, cotton and crop straws are subjected to enzymolysis by cellulase, and are oxidized by sulfuric acid solution and potassium permanganate after enzymolysis, so that a large number of carboxyl groups are generated in fibers, aluminum ions are complexed and adsorbed, copper powder is used for replacement to generate aluminum simple substance nanoparticles, the aluminum simple substance is dispersed in fiber components, the aluminum ions are dispersed in the antirust paint components by using the fiber components, the aluminum simple substance reacts preferentially to generate an aluminum oxide film, and the aluminum oxide film has a protective effect on each component in the antirust paint, so that the antirust, waterproof and anticorrosion performances of the antirust paint are comprehensively improved, and the antirust paint has a wide application prospect.
Detailed Description
Putting cotton and crop straws into an oven according to a mass ratio of 5:1, drying for 2-3 h at the temperature of 60-70 ℃, putting the dried cotton and crop straws into a crusher, crushing and mixing to obtain a mixed material for later use, putting the mixed material and 5-10% hydrochloric acid according to a mass ratio of 1:10 into a beaker, stirring for 30-40 min at a rotating speed of 120-150 r/min by using a stirring device, and standing for 5-6 h to obtain a solid-liquid mixture; placing the beaker into a resistance heating sleeve, dropwise adding a sodium hydroxide solution with the mass fraction of 8-12% and the mass fraction of 20-25% of the solid-liquid mixture into the beaker, raising the temperature of the heating sleeve to 80-100 ℃ after dropwise adding, heating at constant temperature for 60-80 min to prepare reaction slurry, and putting the reaction slurry and silicon dioxide powder into a reaction kettle according to the mass ratio of 50: 1; filling nitrogen into the reaction kettle to increase the pressure in the reaction kettle to 1.0-1.2 MPa, increasing the temperature in the reaction kettle to 280-300 ℃, reacting at constant temperature and constant pressure for 100-120 min to obtain a hot reactant, putting the hot reactant into a beaker, dropwise adding hydrochloric acid with the mass fraction of 10-15% into the beaker to adjust the pH value to 9-10, placing the beaker into a vacuum drying oven, and standing for 2-3 h under the conditions of the vacuum degree of 100-200 Pa and the temperature of 50-60 ℃ to obtain a self-made protective agent for later use; putting the standby mixed material and distilled water into a beaker according to the mass ratio of 1:5, putting the beaker into a water bath kettle with the water bath temperature of 80-100 ℃, stirring for 50-60 min at the rotating speed of 600-700 r/min by using a stirring device to prepare a mixed solution, putting the mixed solution and cellulase into an enzymolysis tank according to the mass ratio of 50:1, and putting the enzymolysis tank into a greenhouse with the indoor temperature of 32-36 ℃ for standing for 10-12 h to prepare an enzymolysis reactant; putting an enzymolysis reactant and a sulfuric acid solution with the mass fraction of 20-30% into a reaction kettle according to the mass ratio of 10:1, raising the temperature in the reaction kettle to 45-50 ℃, stirring for 30-40 min at the rotating speed of 600-700 r/min by using a stirrer to prepare an acidic reaction solution, adding potassium permanganate powder with the mass of 3-5% of the acidic reaction solution into the reaction kettle, and stirring for 30-40 min at the rotating speed of 600-700 r/min by using a stirring device to prepare an oxidation reaction solution; putting the oxidation reaction liquid and aluminum chloride powder into a three-neck flask according to the mass ratio of 20:1, putting the three-neck flask into an ultrasonic oscillator, oscillating for 1-2 hours under the condition of the frequency of 32-36 kHz to prepare reaction slurry, adding copper powder accounting for 3-5% of the mass of the reaction slurry into the three-neck flask, continuing oscillating for 3-5 hours, filtering after oscillating to obtain a filter cake, and cleaning the filter cake with distilled water for 3-5 times to prepare the antirust auxiliary agent; the water-resistant anticorrosive antirust paint is prepared by putting 5-7 parts by weight of a standby self-made protective agent, 2-4 parts by weight of the antirust auxiliary agent, 15-18 parts by weight of polyamide resin, 10-12 parts by weight of acrylic acid, 6-8 parts by weight of ammonium polymethacrylate and 7-10 parts by weight of deionized water into a stirrer, stirring for 30-40 min at the rotating speed of 1200-1500 r/min to prepare a prefabricated mixed solution, putting 50-55 parts by weight of the prefabricated mixed solution, 6-10 parts by weight of water, 0.5-0.7 part by weight of aluminum tripolyphosphate, 0.3-0.5 part by weight of triethylamine and 0.2-0.3 part by weight of talcum powder into the stirrer, and stirring for 20-30 min at the rotating speed of 1000-1200 r/min.
Example 1
Preparation of solid-liquid mixture:
putting cotton and crop straws into an oven according to a mass ratio of 5:1, drying for 2h at the temperature of 60 ℃, putting the dried cotton and crop straws into a crusher, crushing and mixing to prepare a mixed material for later use, putting the mixed material and hydrochloric acid with the mass fraction of 5% into a beaker according to a mass ratio of 1:10, stirring for 30min at a rotating speed of 120r/min by using a stirring device, and standing for 5h to prepare a solid-liquid mixture;
preparation of reaction slurry:
placing the beaker into a resistance heating sleeve, dropwise adding a sodium hydroxide solution with the mass fraction of 8% and the mass fraction of 20% of the solid-liquid mixture into the beaker, raising the temperature of the heating sleeve to 80 ℃ after dropwise adding, heating at constant temperature for 60min to prepare reaction slurry, and putting the reaction slurry and silicon dioxide powder into a reaction kettle according to the mass ratio of 50: 1;
preparing a self-made protective agent:
filling nitrogen into the reaction kettle to increase the pressure in the reaction kettle to 1.0MPa, increasing the temperature in the reaction kettle to 280 ℃, carrying out constant-temperature and constant-pressure reaction for 100min to obtain a hot reactant, putting the hot reactant into a beaker, dropwise adding hydrochloric acid with the mass fraction of 10% into the beaker to adjust the pH value to 9, putting the beaker into a vacuum drying oven, and standing for 2h under the conditions of the vacuum degree of 100Pa and the temperature of 50 ℃ to obtain a self-made protective agent for later use;
preparation of an enzymolysis reactant:
putting the prepared mixed material and distilled water into a beaker according to the mass ratio of 1:5, putting the beaker into a water bath kettle with the water bath temperature of 80 ℃, stirring for 50min at the rotating speed of 600r/min by using a stirring device to prepare a mixed solution, putting the mixed solution and cellulase into an enzymolysis tank according to the mass ratio of 50:1, putting the enzymolysis tank into a greenhouse with the indoor temperature of 32 ℃, and standing for 10h to prepare an enzymolysis reactant;
preparation of an oxidation reaction solution:
putting an enzymolysis reactant and a sulfuric acid solution with the mass fraction of 20% into a reaction kettle according to the mass ratio of 10:1, raising the temperature in the reaction kettle to 45 ℃, stirring for 30min at the rotating speed of 600r/min by using a stirrer to prepare an acidic reaction solution, adding potassium permanganate powder with the mass of 3% of the acidic reaction solution into the reaction kettle, and stirring for 30min at the rotating speed of 600r/min by using a stirring device to prepare an oxidation reaction solution;
preparing an antirust auxiliary agent:
putting the oxidation reaction liquid and aluminum chloride powder into a three-neck flask according to the mass ratio of 20:1, putting the three-neck flask into an ultrasonic oscillator, oscillating for 1h under the condition of 32kHz to prepare reaction slurry, adding copper powder accounting for 3% of the mass of the reaction slurry into the three-neck flask, continuing oscillating for 3h, filtering after oscillation to obtain a filter cake, and cleaning the filter cake for 3 times by using distilled water to prepare the antirust auxiliary agent;
preparing a waterproof anticorrosive antirust paint:
5 parts of standby self-made protective agent, 2 parts of the antirust auxiliary agent, 15 parts of polyamide resin, 10 parts of acrylic acid, 6 parts of ammonium polymethacrylate and 7 parts of deionized water are put into a stirrer and stirred for 30min at the rotating speed of 1200r/min to prepare a prefabricated mixed solution, 50 parts of the prefabricated mixed solution, 6 parts of water, 0.5 part of aluminum tripolyphosphate, 0.3 part of triethylamine and 0.2 part of talcum powder are put into the stirrer and stirred for 20min at the rotating speed of 1000r/min to obtain the water-resistant and anticorrosive antirust paint.
Example 2
Preparation of solid-liquid mixture:
putting cotton and crop straws into an oven according to a mass ratio of 5:1, drying for 2.5h at 65 ℃, putting the dried cotton and crop straws into a crusher, crushing and mixing to prepare a mixed material for later use, putting the mixed material and 7.5% hydrochloric acid according to a mass ratio of 1:10 into a beaker, stirring for 35min at a rotating speed of 135r/min by using a stirring device, and standing for 5.5h to prepare a solid-liquid mixture;
preparation of reaction slurry:
placing the beaker into a resistance heating sleeve, dropwise adding a sodium hydroxide solution with the mass fraction of 10% and the mass percentage of 22.5% of the solid-liquid mixture into the beaker, raising the temperature of the heating sleeve to 90 ℃ after dropwise adding, heating at constant temperature for 70min to prepare reaction slurry, and putting the reaction slurry and silicon dioxide powder into a reaction kettle according to the mass ratio of 50: 1;
preparing a self-made protective agent:
filling nitrogen into the reaction kettle to increase the pressure in the reaction kettle to 1.1MPa, increasing the temperature in the reaction kettle to 290 ℃, reacting at constant temperature and constant pressure for 110min to obtain a hot reactant, putting the hot reactant into a beaker, dropwise adding hydrochloric acid with the mass fraction of 12.5% into the beaker to adjust the pH value to 9.5, placing the beaker into a vacuum drying oven, and standing for 2.5h under the conditions of the vacuum degree of 150Pa and the temperature of 55 ℃ to obtain a self-made protective agent for later use;
preparation of an enzymolysis reactant:
putting the prepared mixed material and distilled water into a beaker according to the mass ratio of 1:5, putting the beaker into a water bath kettle with the water bath temperature of 90 ℃, stirring the mixed material and the distilled water for 55min by a stirring device at the rotating speed of 650r/min to prepare a mixed solution, putting the mixed solution and cellulase into an enzymolysis tank according to the mass ratio of 50:1, putting the enzymolysis tank into a greenhouse with the indoor temperature of 34 ℃, and standing the mixture for 11h to prepare an enzymolysis reactant;
preparation of an oxidation reaction solution:
putting an enzymolysis reactant and a sulfuric acid solution with the mass fraction of 25% into a reaction kettle according to the mass ratio of 10:1, raising the temperature in the reaction kettle to 47.5 ℃, stirring for 35min at the rotating speed of 650r/min by using a stirrer to prepare an acidic reaction solution, adding potassium permanganate powder with the mass of 4% of the acidic reaction solution into the reaction kettle, and stirring for 35min at the rotating speed of 650r/min by using a stirring device to prepare an oxidation reaction solution;
preparing an antirust auxiliary agent:
putting the oxidation reaction liquid and aluminum chloride powder into a three-neck flask according to the mass ratio of 20:1, putting the three-neck flask into an ultrasonic oscillator, oscillating for 1.5 hours under the condition of 34kHz to prepare reaction slurry, adding copper powder accounting for 4% of the mass of the reaction slurry into the three-neck flask, continuing oscillating for 4 hours, filtering after oscillation to obtain a filter cake, and cleaning the filter cake for 4 times by using distilled water to prepare the antirust auxiliary agent;
preparing a waterproof anticorrosive antirust paint:
6 parts of standby self-made protective agent, 3 parts of the antirust auxiliary agent, 16.5 parts of polyamide resin, 11 parts of acrylic acid, 7 parts of ammonium polymethacrylate and 8.5 parts of deionized water are put into a stirrer and stirred for 35min at the rotating speed of 1400r/min to prepare a prefabricated mixed solution, and 52.5 parts of the prefabricated mixed solution, 8 parts of water, 0.6 part of aluminum tripolyphosphate, 0.4 part of triethylamine and 0.25 part of talcum powder are put into the stirrer and stirred for 25min at the rotating speed of 1100r/min to obtain the water-resistant and anti-corrosion antirust paint.
Example 3
Preparation of solid-liquid mixture:
putting cotton and crop straws into an oven according to the mass ratio of 5:1, drying for 3h at the temperature of 70 ℃, putting the dried cotton and crop straws into a crusher, crushing and mixing to prepare a mixed material for later use, putting the mixed material and hydrochloric acid with the mass fraction of 10% into a beaker according to the mass ratio of 1:10, stirring for 40min at the rotating speed of 150r/min by using a stirring device, and standing for 6h to prepare a solid-liquid mixture;
preparation of reaction slurry:
placing the beaker into a resistance heating sleeve, dropwise adding a sodium hydroxide solution with the mass fraction of 12% and the mass percent of 25% of the solid-liquid mixture into the beaker, raising the temperature of the heating sleeve to 100 ℃ after dropwise adding, heating at constant temperature for 80min to prepare reaction slurry, and putting the reaction slurry and silicon dioxide powder into a reaction kettle according to the mass ratio of 50: 1;
preparing a self-made protective agent:
filling nitrogen into the reaction kettle to increase the pressure in the reaction kettle to 1.2MPa, increasing the temperature in the reaction kettle to 300 ℃, carrying out constant-temperature and constant-pressure reaction for 120min to obtain a hot reactant, putting the hot reactant into a beaker, dropwise adding 15% hydrochloric acid into the beaker to adjust the pH value to 10, placing the beaker into a vacuum drying oven, and standing for 3h under the conditions of a vacuum degree of 200Pa and a temperature of 60 ℃ to obtain a self-made protective agent for later use;
preparation of an enzymolysis reactant:
putting the prepared mixed material and distilled water into a beaker according to the mass ratio of 1:5, putting the beaker into a water bath kettle with the water bath temperature of 100 ℃, stirring the mixed material and the distilled water for 60min by a stirring device at the rotating speed of 700r/min to prepare a mixed solution, putting the mixed solution and cellulase into an enzymolysis tank according to the mass ratio of 50:1, putting the enzymolysis tank into a greenhouse with the indoor temperature of 36 ℃, and standing the mixture for 12h to prepare an enzymolysis reactant;
preparation of an oxidation reaction solution:
putting an enzymolysis reactant and a sulfuric acid solution with the mass fraction of 30% into a reaction kettle according to the mass ratio of 10:1, raising the temperature in the reaction kettle to 50 ℃, stirring for 40min at the rotating speed of 700r/min by using a stirrer to prepare an acidic reaction solution, adding potassium permanganate powder with the mass fraction of 5% of the acidic reaction solution into the reaction kettle, and stirring for 40min at the rotating speed of 700r/min by using a stirring device to prepare an oxidation reaction solution;
preparing an antirust auxiliary agent:
putting the oxidation reaction liquid and aluminum chloride powder into a three-neck flask according to the mass ratio of 20:1, putting the three-neck flask into an ultrasonic oscillator, oscillating for 2 hours under the condition of 36kHz to prepare reaction slurry, adding copper powder accounting for 5% of the mass of the reaction slurry into the three-neck flask, continuing oscillating for 5 hours, filtering after oscillation to obtain a filter cake, and cleaning the filter cake for 5 times by using distilled water to prepare the antirust auxiliary agent;
preparing a waterproof anticorrosive antirust paint:
according to the weight parts, 7 parts of standby self-made protective agent, 4 parts of the antirust auxiliary agent, 18 parts of polyamide resin, 12 parts of acrylic acid, 8 parts of ammonium polymethacrylate and 10 parts of deionized water are put into a stirrer and stirred for 40min at the rotating speed of 1500r/min to prepare a prefabricated mixed solution, and according to the weight parts, 55 parts of the prefabricated mixed solution, 10 parts of water, 0.7 part of aluminum tripolyphosphate, 0.5 part of triethylamine and 0.3 part of talcum powder are put into the stirrer and stirred for 30min at the rotating speed of 1200r/min to obtain the water-resistant and anticorrosive antirust paint.
Comparative example 1 was prepared essentially the same as example 1 except for the absence of the home-made protectant.
Comparative example 2 was prepared in substantially the same manner as in example 1 except that the oxidation reaction solution was absent.
Comparative example 3 anti-rust paint manufactured by Beijing corporation.
The performance of the anti-rust paint in the invention and the anti-rust paint in the comparative example are respectively detected, and the detection results are shown in table 1:
the detection method comprises the following steps:
and (3) testing the antirust performance: the anti-rust paint prepared by the invention and the anti-rust paint in the comparative example are uniformly coated on two iron sheets with the same area and thickness, the thickness of the paint is kept consistent, the iron sheets are placed in a greenhouse with the relative humidity of air of 90% and the temperature of 37 ℃, and the time for rusting the iron sheets is recorded.
And (3) testing the water resistance: the determination is carried out according to GB/T1733-1993 for determining the water resistance of paint films.
Salt spray resistance test: the sample liquid of ferric chloride-acetic acid-ferric chloride containing was sprayed in the form of mist on the examples and comparative examples using a salt spray tester, and the surface change was observed.
TABLE 1 antirust paint Performance measurement results
| Test items | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Antirust time (sky) | 442 | 449 | 452 | 385 | 396 | 405 |
| Water resistance | Color fastness of 149h | No fading in 153h | The color of the product can not fade for 155h | No fading after 105h | No fading after 109h | Does not fade for 115h |
| Resistance to salt fog | 1079h without foam and red rust | 1085h without foam and red rust | 1100h without foam and red rust | 980h without bubbles and red rust | 991h without foam and red rust | 1006h without foam and red rust |
As can be seen from Table 1, the water-resistant anticorrosive antirust paint prepared by the invention has the advantages of good antirust paint performance, good water resistance, good anticorrosive performance and wide application prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of the invention is to be construed in all aspects and as broadly as possible, and all changes, equivalents and modifications that fall within the true spirit and scope of the invention are therefore intended to be embraced therein.
Claims (10)
1. A preparation method of a waterproof and anticorrosive antirust paint is characterized by comprising the following specific preparation steps:
putting a self-made protective agent, an antirust auxiliary agent, polyamide resin, acrylic acid, ammonium polymethacrylate and deionized water into a stirrer, stirring for 30-40 min at the rotating speed of 1200-1500 r/min to prepare a prefabricated mixed solution, putting the prefabricated mixed solution, water, aluminum tripolyphosphate, triethylamine and talcum powder into the stirrer, and stirring for 20-30 min at the rotating speed of 1000-1200 r/min to obtain the water-resistant anticorrosive antirust paint;
the preparation method of the self-made protective agent comprises the following specific steps:
(1) putting cotton and crop straws into an oven, drying for 2-3 h at the temperature of 60-70 ℃, putting the cotton and the crop straws into a crusher for crushing and mixing to prepare a mixed material, putting the mixed material and hydrochloric acid with the mass fraction of 5-10% into a beaker, stirring for 30-40 min at the rotating speed of 120-150 r/min by using a stirring device, and standing for 5-6 h to prepare a solid-liquid mixture;
(2) placing a beaker in a resistance heating sleeve, dropwise adding 8-12% sodium hydroxide solution into the beaker, raising the temperature of the heating sleeve to 80-100 ℃ after dropwise adding, heating at constant temperature for 60-80 min to prepare reaction slurry, and putting the reaction slurry and silicon dioxide powder into a reaction kettle according to the mass ratio of 50: 1;
(3) filling nitrogen into a reaction kettle to increase the pressure in the reaction kettle to 1.0-1.2 MPa, increasing the temperature in the reaction kettle to 280-300 ℃, reacting at constant temperature and constant pressure for 100-120 min to obtain a hot reactant, putting the hot reactant into a beaker, dropwise adding hydrochloric acid with the mass fraction of 10-15% into the beaker to adjust the pH value to 9-10, placing the beaker into a vacuum drying oven, and standing for 2-3 h under the conditions of the vacuum degree of 100-200 Pa and the temperature of 50-60 ℃ to obtain a self-made protective agent;
the rust-proof auxiliary agent is prepared by the following specific steps:
(1) putting the mixed material and distilled water into a beaker, putting the beaker into a water bath kettle with a water bath temperature of 80-100 ℃, stirring for 50-60 min at a rotating speed of 600-700 r/min by using a stirring device to prepare a mixed solution, putting the mixed solution and cellulase into an enzymolysis tank, and putting the enzymolysis tank into a greenhouse with an indoor temperature of 32-36 ℃ for standing for 10-12 h to prepare an enzymolysis reactant;
(2) putting an enzymolysis reactant and a sulfuric acid solution with the mass fraction of 20-30% into a reaction kettle, raising the temperature in the reaction kettle to 45-50 ℃, stirring for 30-40 min at the rotating speed of 600-700 r/min by using a stirrer to prepare an acidic reaction solution, adding potassium permanganate powder with the mass of 3-5% of the acidic reaction solution into the reaction kettle, and stirring for 30-40 min at the rotating speed of 600-700 r/min by using a stirring device to prepare an oxidation reaction solution;
(3) putting the oxidation reaction liquid and aluminum chloride powder into a three-neck flask, placing the three-neck flask into an ultrasonic oscillator, oscillating for 1-2 hours under the condition that the frequency is 32-36 kHz to prepare reaction slurry, adding copper powder into the three-neck flask, continuing oscillating for 3-5 hours, filtering after oscillating to obtain a filter cake, and cleaning the filter cake with distilled water for 3-5 times to prepare the antirust auxiliary agent.
2. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: preferably, the self-made protective agent is 5-7 parts by weight, the antirust assistant is 2-4 parts by weight, the polyamide resin is 15-18 parts by weight, the acrylic acid is 10-12 parts by weight, the ammonium polymethacrylate is 6-8 parts by weight, and the deionized water is 7-10 parts by weight.
3. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: preferably, the prefabricated mixed liquid comprises, by weight, 50-55 parts of prefabricated mixed liquid, 6-10 parts of water, 0.5-0.7 part of aluminum tripolyphosphate, 0.3-0.5 part of triethylamine and 0.2-0.3 part of talcum powder.
4. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: the mass ratio of the cotton to the crop straws in the specific preparation step (1) of the self-made protective agent is 5: 1.
5. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: the mass ratio of the mixed material to 5-10% hydrochloric acid in the specific preparation step (1) of the self-made protective agent is 1: 10.
6. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: the specific preparation method of the self-made protective agent comprises the step (2) of dropwise adding a sodium hydroxide solution with the mass fraction of 8-12% into a beaker, wherein the mass of the sodium hydroxide solution is 20-25% of that of the solid-liquid mixture.
7. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: the mass ratio of the mixed material and the distilled water in the specific preparation step (1) of the antirust additive is 1: 5.
8. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: the mass ratio of the mixed liquor and the cellulase in the specific preparation step (1) of the antirust additive is 50: 1.
9. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: the mass ratio of the enzymolysis reactant to the sulfuric acid solution with the mass fraction of 20-30% in the specific preparation step (2) of the antirust additive is 10: 1.
10. The preparation method of the water-resistant anticorrosive antirust paint according to claim 1, characterized by comprising the following steps: the specific preparation method of the antirust additive comprises the step (3) that the mass ratio of the oxidation reaction liquid to the aluminum chloride powder is 20:1, and the mass of copper powder added into the three-neck flask is 3-5% of the mass of the reaction slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911271111.5A CN111087842A (en) | 2019-12-12 | 2019-12-12 | Preparation method of waterproof and anticorrosive antirust paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911271111.5A CN111087842A (en) | 2019-12-12 | 2019-12-12 | Preparation method of waterproof and anticorrosive antirust paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111087842A true CN111087842A (en) | 2020-05-01 |
Family
ID=70394979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911271111.5A Pending CN111087842A (en) | 2019-12-12 | 2019-12-12 | Preparation method of waterproof and anticorrosive antirust paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111087842A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116676004A (en) * | 2022-02-22 | 2023-09-01 | 马鞍山中集瑞江润滑油有限公司 | Screw tapping and tapping antirust agent special for electric power |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554850A (en) * | 2013-10-25 | 2014-02-05 | 苏笮斌 | Environment-friendly type anti-cracking corrosion-resistant waterproof material and preparation method thereof |
| CN105038464A (en) * | 2015-09-10 | 2015-11-11 | 广州慧谷化学有限公司 | Water-based high-corrosion-resistance coating with excellent stamping performance and preparing method and application of water-based high-corrosion-resistance coating |
-
2019
- 2019-12-12 CN CN201911271111.5A patent/CN111087842A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554850A (en) * | 2013-10-25 | 2014-02-05 | 苏笮斌 | Environment-friendly type anti-cracking corrosion-resistant waterproof material and preparation method thereof |
| CN105038464A (en) * | 2015-09-10 | 2015-11-11 | 广州慧谷化学有限公司 | Water-based high-corrosion-resistance coating with excellent stamping performance and preparing method and application of water-based high-corrosion-resistance coating |
Non-Patent Citations (1)
| Title |
|---|
| 范红俊: "《化学基础》", 31 July 2017, 中国矿业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116676004A (en) * | 2022-02-22 | 2023-09-01 | 马鞍山中集瑞江润滑油有限公司 | Screw tapping and tapping antirust agent special for electric power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102533029B (en) | Aqueous asphalt imitation anticorrosion coating for container chassis and preparation method thereof | |
| CN102675998B (en) | Water-based fluorocarbon top coat for wind-powered blades and method for preparing water-based fluorocarbon top coat | |
| CN103183989B (en) | Water-borne rust-based anticorrosion coating and preparation method thereof | |
| CN108753164B (en) | Steel anti-corrosion coating and preparation method thereof | |
| CN103183990B (en) | Environment-friendly water-based anticorrosive paint and preparation method thereof | |
| CN103031056B (en) | A kind of Metal surface silane treatment agent containing water nano zinc oxide material and preparation method thereof | |
| AU2021106937A4 (en) | Protective coating with high solid and low voc, and preparation method and use thereof | |
| CN110982372A (en) | Efficient anticorrosive flame-retardant epoxy graphene coating and preparation method thereof | |
| CN115261839B (en) | Passivating solution for passivating high corrosion-resistant alloy | |
| CN110938350A (en) | Epoxy primer for rail transit and preparation method thereof | |
| CN103183991B (en) | Antirust coating with high acid resistance and preparation method thereof | |
| CN104004448A (en) | Single-component cathodic electrophoretic coating for automotive primer | |
| CN111087842A (en) | Preparation method of waterproof and anticorrosive antirust paint | |
| CN103088327A (en) | Metal surface silane treatment agent containing water-soluble phenolic resin and preparation method thereof | |
| CN105907228A (en) | Durable anti-rust paint and preparation method thereof | |
| CN113667376A (en) | Formula of coating under wet and rusty condition | |
| CN102304704A (en) | Aqueous silane treatment agent for improving metal surface protection performance | |
| CN112625564A (en) | Water-based novel high-volume solid-content steel structure normal-temperature anticorrosive paint | |
| CN103214967B (en) | A kind of be common to cold rolling coil, zinc-plated, aluminum-zinc alloy coil not containing the powerful sealing treatment agent and preparation method thereof of chromium, phosphorus | |
| CN108948974B (en) | Water-based metal antirust paint emulsion and preparation method thereof | |
| CN103060787B (en) | A kind of Metal surface silane treatment agent containing diethanolamine and preparation method thereof | |
| CN110003762A (en) | A kind of preparation method of high tenacity intensity cathode electrodip painting coating | |
| CN114763448A (en) | Coating antirust sealant formula suitable for electroplating pretreatment | |
| CN103059728B (en) | A kind of corrosion resistant Metal surface silane treatment agent and preparation method thereof | |
| CN113174188A (en) | High-solid-content anti-rust and anti-corrosion coating for metal and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |