CN116478563A - Black paint and preparation method thereof - Google Patents
Black paint and preparation method thereof Download PDFInfo
- Publication number
- CN116478563A CN116478563A CN202310325023.9A CN202310325023A CN116478563A CN 116478563 A CN116478563 A CN 116478563A CN 202310325023 A CN202310325023 A CN 202310325023A CN 116478563 A CN116478563 A CN 116478563A
- Authority
- CN
- China
- Prior art keywords
- bentonite
- black paint
- peat
- black
- lignite
- 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
- 239000003973 paint Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229940092782 bentonite Drugs 0.000 claims abstract description 43
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 43
- 239000000440 bentonite Substances 0.000 claims abstract description 43
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000003415 peat Substances 0.000 claims abstract description 36
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003245 coal Substances 0.000 claims abstract description 32
- 239000003077 lignite Substances 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 31
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004021 humic acid Substances 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 25
- 239000004927 clay Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 14
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229940080314 sodium bentonite Drugs 0.000 claims abstract description 13
- 229910000280 sodium bentonite Inorganic materials 0.000 claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 21
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 17
- 229910052708 sodium Inorganic materials 0.000 claims description 17
- 239000011734 sodium Substances 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 17
- 239000000654 additive Substances 0.000 claims description 14
- 230000000996 additive effect Effects 0.000 claims description 14
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000009210 therapy by ultrasound Methods 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 7
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 230000006872 improvement Effects 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000011056 performance test Methods 0.000 description 6
- 241000191967 Staphylococcus aureus Species 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 239000003516 soil conditioner Substances 0.000 description 5
- 241000588724 Escherichia coli Species 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
- C09D197/00—Coating compositions based on lignin-containing materials
- C09D197/005—Lignin
-
- 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
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Plant Pathology (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention provides a black paint and a preparation method thereof, wherein the preparation method of the black paint is characterized in that lignite/weathered coal/peat is pretreated, hydrogen peroxide and sodium bentonite are added, and the bentonite/carbon dot/humic acid composite clay black paint is obtained after hydrothermal catalytic oxidation, separation, modification and drying steps. Compared with the prior art, the black paint prepared by the invention has natural black color, excellent hydrophilic performance and dispersibility, integrates good antibacterial and adsorption properties of carbon dots, humic acid and bentonite, can be used for producing water-based paint, and has the advantages of environmental protection, low cost and wide applicability.
Description
Technical Field
The invention relates to a black paint and a preparation method thereof, belonging to the technical field of water paint production.
Background
The water paint is an organic polymer paint with water as a dispersion medium, and in the coating process, the water gradually volatilizes to form an organic polymer coating. Compared with organic solvent type paint, the water paint has obvious advantages, can avoid releasing a large amount of Volatile Organic Compounds (VOCs) during the production and use process, has smaller influence on the environment and human health, and therefore, has attracted wide attention in recent years. However, the water-based paint also faces more technical problems in practical application, such as long film forming time, low adhesive force, easy cracking and the like, and solving the problems has important significance for the wide application of the water-based paint.
In view of the foregoing, it is necessary to provide a black paint and a preparation method thereof to solve the above problems.
Disclosure of Invention
The invention aims to provide a black paint and a preparation method thereof, which have the advantages of environmental protection, low cost and wide applicability.
In order to achieve the above purpose, the invention provides a preparation method of a black paint, which mainly comprises the following steps:
step 1, crushing one or more of lignite, weathered coal and peat, grinding and mixing the crushed lignite/weathered coal/peat with nano ferroferric oxide and sodium hydroxide, performing heat treatment in an air atmosphere, and cooling to finish pretreatment of the lignite/weathered coal/peat;
step 2, adding hydrogen peroxide and sodium bentonite into the pretreated lignite/weathered coal/peat, carrying out thermal insulation reaction in a hydrothermal kettle, and carrying out solid-liquid separation after cooling to obtain a mixed liquid of black bentonite/carbon dots/sodium humate and a solid residue;
and step 3, adding an additive into the mixed liquid of the black bentonite/carbon dot/sodium humate obtained after separation, performing ultrasonic treatment, cooling, washing with water, and then dehydrating and drying to obtain the bentonite/carbon dot/humic acid composite clay black paint.
As a further improvement of the invention, in step 1, the ground and mixed mixture is subjected to a heat treatment in an air atmosphere at 250-350 ℃ for 2-8 hours.
As a further improvement of the invention, in the step 1, the particle size of the nano ferroferric oxide is 1-100 nanometers, the mass ratio of the nano ferroferric oxide in the crushed lignite/weathered coal/peat is 0.1-5wt%, and the mass ratio of the sodium hydroxide in the crushed lignite/weathered coal/peat is 30-200wt%.
As a further improvement of the invention, in the step 2, the concentration of the hydrogen peroxide is 2-30wt%, the mass ratio of the hydrogen peroxide in the pretreated lignite/weathered coal/peat is 100-500wt%, and the mass ratio of the sodium bentonite in the pretreated lignite/weathered coal/peat is 20-200wt%.
As a further improvement of the invention, in the step 2, the reaction is carried out in a hydrothermal kettle at 100-150 ℃ for 2-4 hours.
As a further improvement of the invention, in step 2, the pH value of the solid residue is adjusted to 6-7, and the solid residue is dried.
As a further improvement of the present invention, in step 3, the ultrasonic treatment is performed at 40 to 100℃for 2 to 4 hours.
As a further improvement of the invention, in the step 3, the additive is one or more of hexadecyl trimethyl ammonium bromide, stearic acid and polyether polyol, and the mass ratio of the additive in the mixed liquid of black bentonite/carbon point/sodium humate is 1-5wt%.
In order to achieve the above purpose, the invention also provides a black paint, which is prepared by the preparation method of the black paint.
As a further improvement of the invention, the black paint comprises bentonite, carbon dots and humic acid composite clay, wherein the mass ratio of the bentonite to the carbon dots to the humic acid composite clay is 1:0.01-0.15:0.2-5.
The beneficial effects of the invention are as follows: the black paint prepared by the invention has natural black color, excellent hydrophilic performance and dispersibility, integrates good antibacterial and adsorption properties of carbon dots, humic acid and bentonite, can be used for producing water-based paint, and has the advantages of environmental protection, low cost and wide applicability.
Drawings
FIG. 1 is a photograph of bentonite/carbon dot/humic acid composite clay black paint obtained in example 1.
Fig. 2 is a graph showing the bacteriostatic effect of the bentonite/carbon dot/humic acid composite clay black paint obtained in example 1 on staphylococcus aureus, wherein a is a blank group, and b is a composite clay black paint added.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In this case, in order to avoid obscuring the present invention due to unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not greatly related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1 and 2, the invention discloses a black paint and a preparation method thereof, wherein the black paint is prepared by pretreating lignite/weathered coal/peat, adding hydrogen peroxide and sodium bentonite, and performing hydrothermal catalytic oxidation, separation, modification and drying steps to obtain bentonite/carbon dot/humic acid composite clay black paint, wherein the black paint comprises bentonite, carbon dot and humic acid composite clay, and the mass ratio of the bentonite to the carbon dot to the humic acid composite clay is 1:0.01-0.15:0.2-5.
The preparation method of the black paint mainly comprises the following steps:
step 1, crushing one or more of lignite, weathered coal and peat, grinding and mixing the crushed lignite/weathered coal/peat with nano ferroferric oxide and sodium hydroxide, performing heat treatment in an air atmosphere, and cooling to finish pretreatment of the lignite/weathered coal/peat;
step 2, adding hydrogen peroxide and sodium bentonite into the pretreated lignite/weathered coal/peat, carrying out thermal insulation reaction in a hydrothermal kettle, and carrying out solid-liquid separation after cooling to obtain a mixed liquid of black bentonite/carbon dots/sodium humate and a solid residue;
and step 3, adding an additive into the mixed liquid of the black bentonite/carbon dot/sodium humate obtained after separation, performing ultrasonic treatment, cooling, washing with water, and then dehydrating and drying to obtain the bentonite/carbon dot/humic acid composite clay black paint.
Steps 1 to 3 will be described in detail below.
In the step 1, the mixture of lignite/weathered coal/peat, nano ferroferric oxide and sodium hydroxide after grinding and mixing is subjected to heat treatment for 2-8 hours at 250-350 ℃ in air atmosphere.
The particle size of the nano ferroferric oxide is 1-100 nanometers, the mass ratio of the nano ferroferric oxide in the crushed lignite/weathered coal/peat is 0.1-5wt%, and the mass ratio of the sodium hydroxide in the crushed lignite/weathered coal/peat is 30-200wt%.
In the step 2, the concentration of the hydrogen peroxide is 2-30wt%, the mass ratio of the hydrogen peroxide in the pretreated lignite/weathered coal/peat is 100-500wt%, and the mass ratio of the sodium bentonite in the pretreated lignite/weathered coal/peat is 20-200wt%. Adding hydrogen peroxide and sodium bentonite into the pretreated lignite/weathered coal/peat, and carrying out heat preservation reaction for 2-4 hours at 100-150 ℃ in a hydrothermal kettle.
The soil conditioner for treating the saline-alkali soil is obtained by adjusting the pH value of the solid residue to be 6-7 and drying the solid residue.
In the step 3, the additive is one or more of cetyl trimethyl ammonium bromide, stearic acid and polyether polyol, and the mass ratio of the additive in the mixed liquid of black bentonite/carbon dots/sodium humate is 1-5wt%. After the addition of the additive, the mixed liquid is subjected to ultrasonic treatment at 40-100 ℃ for 2-4 hours.
The following is a detailed description of the embodiments.
Embodiment 1 specifically comprises the following steps:
pretreating weathered coal, crushing the weathered coal, grinding and mixing the crushed weathered coal with 2wt% of nano ferroferric oxide (with the size of 1-100 nanometers) and 100wt% of sodium hydroxide, performing heat treatment on the mixture in an air atmosphere at 350 ℃ for 2 hours, and cooling to finish pretreatment of the weathered coal. Then 300wt% of hydrogen peroxide with the concentration of 10wt% and 100wt% of sodium bentonite are added, the reaction is carried out in a hydrothermal kettle at the temperature of 120 ℃ for 2 hours, and solid-liquid separation is carried out after cooling, so that black bentonite/carbon dot/sodium humate mixed liquid and solid residues are obtained.
Regulating the pH value of the solid residue to 7, and drying to obtain a soil conditioner for treating the saline-alkali soil; adding 2wt% of cetyltrimethylammonium bromide additive into the black bentonite/carbon dot/sodium humate mixed liquid obtained after separation, carrying out ultrasonic treatment at 70 ℃ for 3 hours, cooling, washing with water, and then dehydrating and drying to obtain the bentonite/carbon dot/humic acid composite clay black paint.
In the embodiment, the prepared bentonite/carbon dot/humic acid composite clay black paint is subjected to hue, dispersity, adhesive force, bacteriostasis and adsorption performance test, and the result shows that the hue is black and reddish; after 5 hours of oscillation, the fineness of the paint particles in the color paste is less than 5 microns, and the paint particles are well dispersed; the adhesive force of the coating is not less than 9.5N/cm < 2 >; the MIC of the minimum inhibitory concentration on staphylococcus aureus and escherichia coli is 0.03mg/L and 0.12mg/L respectively; the adsorption removal rate of formaldehyde reaches 95.1 percent.
Embodiment 2 specifically comprises the following steps:
pretreating peat, crushing peat, grinding and mixing the crushed peat with 1wt% of nano ferroferric oxide (with the size of 1-100 nanometers) and 100wt% of sodium hydroxide, performing heat treatment on the mixture in an air atmosphere at 350 ℃ for 2 hours, and cooling to finish the pretreatment of peat. Then 400wt% of hydrogen peroxide with the concentration of 10wt% and 100wt% of sodium bentonite are added, the reaction is carried out in a hydrothermal kettle at the temperature of 120 ℃ for 2 hours, and solid-liquid separation is carried out after cooling, so that black bentonite/carbon dot/sodium humate mixed liquid and solid residues are obtained.
Regulating the pH value of the solid residue to 7, and drying to obtain a soil conditioner for treating the saline-alkali soil; adding 2wt% of polyether polyol additive into the black bentonite/carbon dot/sodium humate mixed liquid obtained after separation, carrying out ultrasonic treatment at 70 ℃ for 3 hours, cooling, washing with water, and then dehydrating and drying to obtain the bentonite/carbon dot/humic acid composite clay black paint.
In the embodiment, the prepared bentonite/carbon dot/humic acid composite clay black paint is subjected to hue, dispersity, adhesive force, bacteriostasis and adsorption performance test, and the result shows that the hue is black and reddish; after 5 hours of oscillation, the fineness of the paint particles in the color paste is less than 7 microns, and the paint particles are well dispersed; the adhesive force of the coating is not less than 9.5N/cm < 2 >; the MIC of the minimum inhibitory concentration on staphylococcus aureus and escherichia coli is 0.04mg/L and 0.15mg/L respectively; the adsorption removal rate of formaldehyde reaches 96.3 percent.
Embodiment 3 specifically comprises the following steps:
pretreating peat, crushing peat, grinding and mixing the crushed peat with 1wt% of nano ferroferric oxide (with the size of 1-100 nanometers) and 100wt% of sodium hydroxide, performing heat treatment on the mixture in an air atmosphere at 350 ℃ for 2 hours, and cooling to finish the pretreatment of peat. Then 400wt% of hydrogen peroxide with the concentration of 10wt% and 80wt% of sodium bentonite are added, the mixture is reacted in a hydrothermal kettle at 120 ℃ for 2 hours, and solid-liquid separation is carried out after cooling, so that black bentonite/carbon point/sodium humate mixed liquid and solid residues are obtained.
Regulating the pH value of the solid residue to 7, and drying to obtain a soil conditioner for treating the saline-alkali soil; adding 3wt% of stearic acid additive into the black bentonite/carbon dot/sodium humate mixed liquid obtained after separation, carrying out ultrasonic treatment at 70 ℃ for 3 hours, cooling, washing with water, and then dehydrating and drying to obtain the bentonite/carbon dot/humic acid composite clay black paint.
In the embodiment, the prepared bentonite/carbon dot/humic acid composite clay black paint is subjected to hue, dispersity, adhesive force, bacteriostasis and adsorption performance test, and the result shows that the hue is black and reddish; after 5 hours of oscillation, the fineness of the paint particles in the color paste is less than 7 microns, and the paint particles are well dispersed; the adhesive force of the coating is not less than 9.4N/cm < 2 >; the MIC of the minimum inhibitory concentration on staphylococcus aureus and escherichia coli is 0.03mg/L and 0.14mg/L respectively; the adsorption removal rate of formaldehyde reaches 97.2 percent.
Embodiment 4 specifically comprises the following steps:
pretreating lignite, crushing the lignite, grinding and mixing the crushed lignite with 1wt% of nano ferroferric oxide (with the size of 1-100 nanometers) and 100wt% of sodium hydroxide, performing heat treatment on the mixture in an air atmosphere at 350 ℃ for 2 hours, and cooling to finish pretreatment of the lignite. Then 400wt% of hydrogen peroxide with the concentration of 10wt% and 80wt% of sodium bentonite are added, the mixture is reacted in a hydrothermal kettle at 120 ℃ for 2 hours, and solid-liquid separation is carried out after cooling, so that black bentonite/carbon point/sodium humate mixed liquid and solid residues are obtained.
Regulating the pH value of the solid residue to 7, and drying to obtain a soil conditioner for treating the saline-alkali soil; adding 3wt% of equal-mass hexadecyl trimethyl ammonium bromide and stearic acid additive into the black bentonite/carbon dot/sodium humate mixed liquid obtained after separation, carrying out ultrasonic treatment at 70 ℃ for 3 hours, cooling, washing with water, and then dehydrating and drying to obtain the bentonite/carbon dot/humic acid composite clay black paint.
In the embodiment, the prepared bentonite/carbon dot/humic acid composite clay black paint is subjected to hue, dispersity, adhesive force, bacteriostasis and adsorption performance test, and the result shows that the hue is black and reddish; after 5 hours of oscillation, the fineness of the paint particles in the color paste is less than 8 microns, and the paint particles are well dispersed; the adhesive force of the coating is not less than 9.5N/cm < 2 >; the MIC of the minimum inhibitory concentration on staphylococcus aureus and escherichia coli is 0.05mg/L and 0.13mg/L respectively; the adsorption removal rate of formaldehyde reaches 96.7 percent.
The results of the performance test of the bentonite/carbon dot/humic acid composite clay black paint in each example are shown in table 1 below.
Table 1 results of Performance test of Bentonite/carbon dot/humic acid composite Clay Black coating in examples
In summary, as can be further seen from examples 1-4, the organic composite clay water-based paint provided by the invention has the advantages of natural black color, good hydrophilicity and dispersibility, overcomes the defect of low adhesive force of the conventional water-based paint, integrates good antibacterial and adsorption properties of carbon dots, humic acid and bentonite, can be used for water-based paint production, and has the advantages of environmental protection, low cost and wide applicability.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. The preparation method of the black paint is characterized by mainly comprising the following steps:
step 1, crushing one or more of lignite, weathered coal and peat, grinding and mixing the crushed lignite/weathered coal/peat with nano ferroferric oxide and sodium hydroxide, performing heat treatment in an air atmosphere, and cooling to finish pretreatment of the lignite/weathered coal/peat;
step 2, adding hydrogen peroxide and sodium bentonite into the pretreated lignite/weathered coal/peat, carrying out thermal insulation reaction in a hydrothermal kettle, and carrying out solid-liquid separation after cooling to obtain a mixed liquid of black bentonite/carbon dots/sodium humate and a solid residue;
and step 3, adding an additive into the mixed liquid of the black bentonite/carbon dot/sodium humate obtained after separation, performing ultrasonic treatment, cooling, washing with water, and then dehydrating and drying to obtain the bentonite/carbon dot/humic acid composite clay black paint.
2. The method for preparing a black paint according to claim 1, wherein: in step 1, the mixture after grinding and mixing is subjected to heat treatment for 2 to 8 hours at the temperature of 250 to 350 ℃ in an air atmosphere.
3. The method for preparing a black paint according to claim 1, wherein: in the step 1, the particle size of the nano ferroferric oxide is 1-100 nanometers, the mass ratio of the nano ferroferric oxide in the crushed lignite/weathered coal/peat is 0.1-5wt%, and the mass ratio of the sodium hydroxide in the crushed lignite/weathered coal/peat is 30-200wt%.
4. The method for preparing a black paint according to claim 1, wherein: in the step 2, the concentration of the hydrogen peroxide is 2-30wt%, the mass ratio of the hydrogen peroxide in the pretreated lignite/weathered coal/peat is 100-500wt%, and the mass ratio of the sodium bentonite in the pretreated lignite/weathered coal/peat is 20-200wt%.
5. The method for preparing a black paint according to claim 1, wherein: in the step 2, the reaction is carried out in a hydrothermal kettle at the temperature of 100-150 ℃ for 2-4 hours.
6. The method for preparing a black paint according to claim 1, wherein: in step 2, the pH value of the solid residue is adjusted to 6-7, and the solid residue is dried.
7. The method for preparing a black paint according to claim 1, wherein: in step 3, the ultrasonic treatment is carried out for 2 to 4 hours at the temperature of 40 to 100 ℃.
8. The method for preparing a black paint according to claim 1, wherein: in the step 3, the additive is one or more of cetyl trimethyl ammonium bromide, stearic acid and polyether polyol, and the mass ratio of the additive in the mixed liquid of black bentonite/carbon dots/sodium humate is 1-5wt%.
9. A black paint, characterized in that it is prepared by applying the preparation method of a black paint according to any one of claims 1 to 8.
10. The black paint of claim 9, wherein: the black paint comprises bentonite, carbon dots and humic acid composite clay, wherein the mass ratio of the bentonite to the carbon dots to the humic acid composite clay is 1:0.01-0.15:0.2-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310325023.9A CN116478563A (en) | 2023-03-30 | 2023-03-30 | Black paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310325023.9A CN116478563A (en) | 2023-03-30 | 2023-03-30 | Black paint and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116478563A true CN116478563A (en) | 2023-07-25 |
Family
ID=87216897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310325023.9A Pending CN116478563A (en) | 2023-03-30 | 2023-03-30 | Black paint and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116478563A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103497220A (en) * | 2013-10-21 | 2014-01-08 | 张京三 | Production technology of sodium humate |
| CN104229813A (en) * | 2014-08-28 | 2014-12-24 | 中南大学 | Preparation method and application of modified bentonite |
| CN104826599A (en) * | 2015-05-05 | 2015-08-12 | 济南大学 | Preparation method of magnetic composite organic bentonite |
| US20160060122A1 (en) * | 2013-05-02 | 2016-03-03 | William Marsh Rice University | Methods of producing graphene quantum dots from coal and coke |
| CN109810150A (en) * | 2019-03-01 | 2019-05-28 | 中国矿业大学 | A method of fulvic acid in lignite is extracted using supersonic synergic catalysis oxidation |
| CN110314659A (en) * | 2019-06-28 | 2019-10-11 | 中化化工科学技术研究总院有限公司 | With the preparation method and applications of the water treatment agent of humic acid modified active carclazyte |
| CN112608743A (en) * | 2020-12-24 | 2021-04-06 | 中国矿业大学(北京) | Preparation method of coal-based fluorescent carbon quantum dots |
-
2023
- 2023-03-30 CN CN202310325023.9A patent/CN116478563A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160060122A1 (en) * | 2013-05-02 | 2016-03-03 | William Marsh Rice University | Methods of producing graphene quantum dots from coal and coke |
| CN103497220A (en) * | 2013-10-21 | 2014-01-08 | 张京三 | Production technology of sodium humate |
| CN104229813A (en) * | 2014-08-28 | 2014-12-24 | 中南大学 | Preparation method and application of modified bentonite |
| CN104826599A (en) * | 2015-05-05 | 2015-08-12 | 济南大学 | Preparation method of magnetic composite organic bentonite |
| CN109810150A (en) * | 2019-03-01 | 2019-05-28 | 中国矿业大学 | A method of fulvic acid in lignite is extracted using supersonic synergic catalysis oxidation |
| CN110314659A (en) * | 2019-06-28 | 2019-10-11 | 中化化工科学技术研究总院有限公司 | With the preparation method and applications of the water treatment agent of humic acid modified active carclazyte |
| CN112608743A (en) * | 2020-12-24 | 2021-04-06 | 中国矿业大学(北京) | Preparation method of coal-based fluorescent carbon quantum dots |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107325787B (en) | Hollow carbon nano-particles and wave-absorbing material prepared from same | |
| CN106904649B (en) | In-situ control method for form and crystal face of nano cerium oxide | |
| CN109665537A (en) | A kind of low temperature preparation EuB6The method of nanocube crystal | |
| CN113897235B (en) | Preparation method of nitrogen-doped carbon quantum dot/2D Ni-BDC nano composite lubricating material | |
| JPH10245603A (en) | Production of ultrafine w/cu metal composite powder and high density bulk material by mechanochemical method | |
| CN113892490B (en) | Carboxymethyl chitosan coated nano zinc oxide antibacterial colloid and preparation method thereof | |
| CN112225566B (en) | Silicon nitride powder, preparation method and application thereof, and ceramic material | |
| CN114956065B (en) | Amino modified graphene, preparation method thereof, amino modified graphene coating and application | |
| CN116478563A (en) | Black paint and preparation method thereof | |
| CN112708282A (en) | Inorganic nano formaldehyde-removing resin | |
| CN113797965A (en) | Preparation method of titanium silicalite molecular sieve crystal-loaded copper nanoparticle catalyst | |
| CN108689431B (en) | Preparation method of aqueous phase nano zirconium oxide particle dispersoid | |
| CN113292053B (en) | Process for preparing high-dispersity aluminum nitride powder by carbothermic method based on polymer dispersant | |
| CN113645822B (en) | Porous hollow graphitized carbon electromagnetic wave absorbing material and preparation method thereof | |
| JP2011195951A (en) | Method for producing metal nanoparticle, ink composition using the same, and method for producing the composition | |
| CN107892318A (en) | A kind of preparation method of active nano-calcium carbonate | |
| CN112846213B (en) | Preparation method of low-oxygen high-dispersion nano spherical cobalt powder | |
| CN112575040A (en) | Method for preparing high-dispersity nano calcium carbonate by using bacillus pasteurii | |
| CN110734292B (en) | Method for uniformly mixing CuO and ceramic powder | |
| CN114682787A (en) | Method for preparing spherical silver powder suitable for electronic silver paste and surface modification | |
| CN112110732A (en) | Method for preparing aluminum nitride powder by using soluble carbon source | |
| Mahmud et al. | Characterization of BCZY Ceramic Material Prepared with Treated Activated Carbon from Empty Fruit Bunches (EFB) | |
| CN116812882A (en) | Preparation method of aluminum nitride powder by taking black liquor of paper pulp by ammonium sulfite method as carbon source | |
| CN115820038B (en) | Particle-free iron-based conductive ink for electromagnetic function and preparation method thereof | |
| CN115305094B (en) | Soil conditioner 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 |