AU2020101038A4 - Preparation method of lignin-resin super-hydrophobic insulated corrosion-resistant coating - Google Patents
Preparation method of lignin-resin super-hydrophobic insulated corrosion-resistant coating Download PDFInfo
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- AU2020101038A4 AU2020101038A4 AU2020101038A AU2020101038A AU2020101038A4 AU 2020101038 A4 AU2020101038 A4 AU 2020101038A4 AU 2020101038 A AU2020101038 A AU 2020101038A AU 2020101038 A AU2020101038 A AU 2020101038A AU 2020101038 A4 AU2020101038 A4 AU 2020101038A4
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D181/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Coating compositions based on polysulfones; Coating compositions based on derivatives of such polymers
- C09D181/06—Polysulfones; Polyethersulfones
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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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
- C09D197/00—Coating compositions based on lignin-containing materials
- C09D197/005—Lignin
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention discloses a preparation method of a lignin/resin super-hydrophobic
insulated corrosion-resistant coating, and relates to the technical field of coatings and polymeric
5 functional materials; dissolving alkali lignin in a polar solvent, slowly adding an initiator to an
obtained alkali lignin solution, heating to 90-180°C under protection of nitrogen, slowly adding
long-chain alkane methoxysilane to react to obtain a modified alkali lignin solution, settling the
modified alkali lignin solution to separate out to obtain modified alkali lignin modifier, adding
the modified lignin into hydrophobic resin, stirring and adding a curing agent to obtain a lignin/
0 resin composite coating, and spraying the coating to the surface of wood, ceramics or metal by
using a spray gun to form a super-hydrophobic surface film layer; the super-hydrophobic
surface film layer has strong hydrophobicity, corrosion resistance and insulativity, adopts raw
materials which are cheap and rich in source, belongs to cyclic comprehensive application of
biomass raw materials, and thus has good application prospect and economical benefit.
5
11
Description
TECHNICAL FIELD The present invention discloses a preparation method of a lignin/resin super-hydrophobic insulated corrosion-resistant coating, and relates to the technical field of coatings and polymeric functionalmaterials.
BACKGROUD Lignin is a natural resource, ranking only second to cellulose and chitin in the nature, and is one of three major components of plant cell walls. Lignin not only exists in wood raw materials, but also exits in herbage raw materials such as wheat straw and reed, and is one of important components for plants to keep upright and prevent corrosion. The reserves of lignin is huge, and if not being sufficiently utilized, not only resource is wasted, but also environmental pollution is caused. The present invention provides a preparation method of a lignin/resin super-hydrophobic insulated corrosion-resistant coating, in which modified super-hydrophobic lignin is mixed with hydrophobic resin to form a super-hydrophobic coating. A contact angle of the super-hydrophobic coating is greater than 150° , a sliding angle is
smaller than 100, and because the super-hydrophobic coating has superstrong hydrophobic and oleophilic properties, the super-hydrophobic surface coating of the present invention has a broad application prospect in the direction of organic coatings, especially in architectural engineering, the super-hydrophobic surface coating can be applied to painting outer walls and top layers, the coating disclosed by the present invention has excellent corrosion resistance, anti-pollution property, and waterproof, seal-cleaning and surface protective effects, and can keep to bring lasting freshness to buildings, thereby reducing construction and saving cost.
SUMMARY Directed to problems of the prior art, the present invention provides a preparation method O of a lignin/resin super-hydrophobic insulated corrosion-resistant coating, and the super-hydrophobic coating has a strong hydrophobic capacity, is strong in durability and insulativity, also has a self-cleaning capacity, adopts the raw material, lignin, which is cheap and rich in source, and belongs to cyclic comprehensive application of biomass raw materials, and thus has good application prospect and economical benefit. A specific scheme provided by the present invention is: a preparation method of a lignin/resin super-hydrophobic insulated corrosion-resistant coating, comprising: dissolving alkali lignin in a polar solvent, slowly adding an initiator to an obtained alkali lignin solution, heating to 90-180°C under protection of nitrogen, slowly adding long-chain alkane methoxysilane to react to obtain a modified alkali lignin solution, settling and purifying the modified alkali lignin solution to separate out an alkali lignin modifier, and drying for later use, and adding the alkali lignin modifier to a hydrophobic resin solution, stirring, and adding a curing agent to obtain a nanometer lignin fluoride-free super-hydrophobic coating. According to the preparation method, dissolving alkali lignin in any polar solvent out of acetone, dioxane, N,N-dimethylformamide (DMF) and dimethylsulfoxide DMSO. According to the preparation method, slowly adding a triethylamine or sodium alkoxide initiator with mass concentration of 1%-10% to an obtained alkali lignin solution. According to the preparation method, slowly adding an initiator to an obtained alkali lignin solution, heating to 90-180°C under the protection of nitrogen, and slowly adding long-chain alkane methoxysilane with mass concentration of 1%- 2 0% to react to obtain a modified alkali lignin solution. According to the preparation method, reacting for 2-10h to obtain a modified alkali lignin solution. According to the preparation method, the long-chain alkane methoxysilane refers to that from dodecyl trimethylsilane to octadecyl trimethylsilane. According to the preparation method, dissolving alkali lignin in a polar solvent, to obtain an alkali lignin solution with mass concentration of 1%-15%. According to the preparation method, the hydrophobic resin refers to one or a mixture of several out of polyurethane resin, epoxy resin, polysulfone resin, poly-methyl silicon resin, poly-ethyl silicone resin and poly-aryl organic silicon resin. According to the preparation method, the mass fraction of hydrophobic resin is 10-50%. According to the preparation method, a curing agent is one or a mixture of several out of water-based isocyanate, waterborne polyurethane resin, and waterborne acrylic resin, and the mass percent of the curing agent is 1- 8 %. The present invention also relates to a lignin/resin super-hydrophobic insulated corrosion-resistant coating prepared by the preparation method. The present invention further relates to an application implemented by utilizing the lignin/resin super-hydrophobic insulated corrosion-resistant coating. The present invention has the following benefits: the present invention provides a preparation method of a lignin/resin super-hydrophobic insulated corrosion-resistant coating, According to the present invention, alkali lignin is dissolved in a polar solvent to obtain a lignin solution, an initiator is added to the lignin solution, pretreatment is performed on lignin in the solution by utilizing strong bacisity to the initiator to increase the quantity of phenolic hydroxyl groups, heating is performed under the protection of nitrogen to generate hydrolysis reaction with long-chain alkane methoxysilane, so as to realize silylation of lignin and obtain modified lignin of a net stereostructure of a long-chain alkane methoxysilane framework, meanwhile, lignin contains a large quantity of hydroxide radicals and has certain rigidity, which lays good foundation for grafting reagents with low surface energy and constructing rough surfaces. Modified lignin is mixed with hydrophobic rein in an organic solvent to obtain a super-hydrophobic lignin coating, contact angles of the super-hydrophobic lignin coating all reach greater than 150, and a curing agent is added to improve the bonding strength of the super-hydrophobic coating, so that the coating is more uniform and dense, meanwhile, the water resistance, corrosion resistance, insulativity and thermal oxidation resistance of the coating are improved.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow diagram of a method of the present invention; FIG. 2 is a schematic diagram of a contact angle of the surface of a coated board, a contact !5 angle being 156°. FIG. 3 is a black-and-white photograph of water drops on a wood chip, wherein A is the form of water drops on a wood chip after being coated with the super-hydrophobic coating, coagulated as spherical water drops; B is the form of water drops on an original wood chip, dispersed as elliptical water stains; FIG. 4 is a hydrophobic property data graph of a wood chip coated with the coating of embodiment 1 after staying in strong acid, neutral salt and strong base for 12h respectively, wherein it is tested that a contact angle of a woof chip coated with the super-hydrophobic coating is not smaller than 151, and it is shown in the drawing that the coating has good water resistance and corrosion resistance;
FIG. 5 is a hydrophobic property data graph of a wood chip coated with the coating of embodiment 2 after staying in strong acid, neutral salt and strong base for 12h respectively, wherein it is tested that a contact angle of a woof chip coated with the super-hydrophobic coating is not smaller than 152, and it is shown in the drawing that the coating has good water resistance and corrosion resistance; FIG. 6 is a hydrophobic property data graph of a wood chip coated with the coating of embodiment 3 after staying in strong acid, neutral salt and strong base for 12h respectively, wherein it is tested that a contact angle of a woof chip coated with the super-hydrophobic coating is not smaller than 151°, and it is shown in the drawing that the coating has good water resistance and corrosion resistance; FIG. 7 is a hydrophobic property data graph of a wood chip coated with the coating of embodiment 4 after staying in strong acid, neutral salt and strong base for 12h respectively, wherein it is tested that a contact angle of a woof chip coated with the super-hydrophobic coating is not smaller than 152, and it is shown in the drawing that the coating has good water resistance and corrosion resistance; FIG. 8 is a hydrophobic property data graph of a wood chip coated with the coating of embodiment 5 after staying in strong acid, neutral salt and strong base for 12h respectively, wherein it is tested that a contact angle of a woof chip coated with the super-hydrophobic coating is not smaller than 150, and it is shown in the drawing that the coating has good water resistance and corrosion resistance; and FIG. 9 is a hydrophobic property data graph of a wood chip coated with the coating of embodiment 6 after staying in strong acid, neutral salt and strong base 12h respectively, wherein it is tested that a contact angle of a woof chip coated with the super-hydrophobic coating is not smaller than 150°, and it is shown in the drawing that the coating has good water resistance and !5 corrosion resistance.
The present invention provides a preparation method of a lignin/resin super-hydrophobic insulated corrosion-resistant coating, comprising:
dissolving alkali lignin in a polar solvent,
slowly adding an initiator to an obtained alkali lignin solution, heating to 90-180°C under
protection of nitrogen, slowly adding long-chain alkane methoxysilane to react to obtain a modified alkali lignin solution, settling and purifying the modified alkali lignin solution to separate out an alkali lignin modifier, and drying for later use, and adding the alkali lignin modifier to a hydrophobic resin solution, stirring, and adding a curing agent to obtain a nanometer lignin fluoride-free super-hydrophobic coating. The present invention also relates to a lignin/resin super-hydrophobic insulated corrosion-resistant coating prepared by the preparation method. The present invention further relates to an application implemented by utilizing the lignin/resin super-hydrophobic insulated corrosion-resistant coating. Alkali lignin is processed with long-chain alkane methoxysilane to obtain modified alkali lignin, and a chemical equation is as follows:
H H3CO
The following further describes the present invention in combination with drawings and specific embodiments, so that technicians of the field may better understand and implement the present invention, however, the embodiments should not be deemed as limitation to the present invention. Embodiment 1 a. dissolving polysulfone resin in dichloromethane to prepare a polysulfone resin solution with mass fraction of 10%; b. dissolving alkali lignin in DMF to prepare an alkali lignin solution with mass fraction of 8%, dissolving sodium methoxide in ethanol to prepare a sodium methoxide solution with mass fraction of 1%, slowly mixing the alkali lignin solution with the sodium methoxide solution, heating to 110°C under the protection of nitrogen, then slowly adding dodecyl trimethoxy silane with mass fraction of 2%, reacting and stirring for 4h to form a steady modified alkali lignin solution; settling and separating out modified alkali lignin with ethanol to obtain an alkali lignin modifier which is then dried for later use; and c. dissolving the alkali lignin modifier in DMF to prepare an alkali lignin modifier solution with mass fraction of 20%, mixing the polysulfone resin after being processed in a with the alkali lignin modifier solution, stirring for 1h at room temperature and then adding water-basedisocyanate with mass fraction of 5%, and stirring for 5min, to obtain the polysulfone resin/lignin super-hydrophobic coating. In all the embodiments, besides spraying, brush coating, spin coating and blade coating may be also adopted as a coating mode of the coating. Embodiment 2 a. dissolving polyurethane resin in thinner to prepare a polyurethane resin solution with mass fraction of 50%; b. dissolving alkali lignin in DMF to prepare an alkali lignin solution with mass fraction of 10%, dissolving sodium methoxide in ethanol to prepare a sodium methoxide solution with mass fraction of 2%, slowly mixing the alkali lignin solution with the sodium methoxide solution, heating to 90°C under the protection of nitrogen, then slowly adding tetradecyl trimethoxy silane with mass fraction of 5.5%, reacting and stirring for 5h to form a steady modified alkali lignin solution; settling and separating out modified alkali lignin with ethanol to obtain an alkali lignin modifier which is then dried for later use; and c. dissolving the alkali lignin modifier in DMF to prepare an alkali lignin modifier solution with mass fraction of 25%, mixing the polyurethane resin after being processed in a with the alkali lignin modifier solution, stirring for 1.5h at room temperature and then adding water-based isocyanate with mass fraction of 4%, and stirring for 20min, to obtain the polyurethane resin/lignin super-hydrophobic coating. Embodiment 3 a. dissolving poly-methyl silicon resin in butyl acetate to prepare a poly-methyl silicon resin solution with mass fraction of 17%; b. dissolving alkali lignin in DMF to prepare an alkali lignin solution with mass fraction of !5 11%, dissolving sodium methoxide in ethanol to prepare a sodium methoxide solution with mass fraction of 3%, slowly mixing the alkali lignin solution with the sodium methoxide solution, heating to 100°C under the protection of nitrogen, then slowly adding cetyl trimethoxy silane with mass fraction of 7%, reacting and stirring for 6h to form a steady modified alkali lignin solution; settling and separating out modified alkali lignin with ethanol to obtain an alkali lignin modifier which is then dried for later use; and c. dissolving the alkali lignin modifier in DMF to prepare an alkali lignin modifier solution with mass fraction of 28%, mixing the poly-methyl silicon resin after being processed in a with the alkali lignin modifier solution, stirring for 3h at room temperature and then adding waterbome polyurethane resin with mass fraction of 10%, and stirring for 25min, to obtain the poly-methyl silicon resin/lignin super-hydrophobic coating. Embodiment 4 a. dissolving epoxy resin in butyl acetate to prepare an epoxy silicon resin solution with mass fraction of 21%; b. dissolving alkali lignin in DMF to prepare an alkali lignin solution with mass fraction of 12%, dissolving sodium methoxide in ethanol to prepare a sodium methoxide solution with mass fraction of 5%, slowly mixing the alkali lignin solution with the sodium methoxide solution, heating to 130°C under the protection of nitrogen, then slowly adding cetyl trimethoxy silane with mass fraction of 14%, reacting and stirring for 8h to form a steady modified alkali lignin solution; settling and separating out modified alkali lignin with ethanol to obtain an alkali lignin modifier which is then dried for later use; and c. dissolving the alkali lignin modifier in DMF to prepare an alkali lignin modifier solution with mass fraction of 26%, mixing the epoxy resin after being processed in a with the alkali lignin modifier solution, stirring for 2h at room temperature and then adding waterbome polyurethane resin with mass fraction of 8%, and stirring for 21mmin, to obtain the epoxy resin/lignin super-hydrophobic coating. Embodiment 5 a. dissolving poly-ethyl silicone resin in butyl acetate to prepare a poly-ethyl silicone resin solution with mass fraction of 28%; b. dissolving alkali lignin in DMF to prepare an alkali lignin solution with mass fraction of 15%, dissolving sodium methoxide in ethanol to prepare a sodium methoxide solution with mass fraction of 7%, slowly mixing the alkali lignin solution with the sodium methoxide solution, heating to 150°C under the protection of nitrogen, then slowly adding cetyl trimethoxy silane with mass fraction of 18%, reacting and stirring for 2h to form a steady !5 modified alkali lignin solution; settling and separating out modified alkali lignin with ethanol to obtain an alkali lignin modifier which is then dried for later use; and c. dissolving the alkali lignin modifier in DMF to prepare an alkali lignin modifier solution with mass fraction of 30%, mixing the poly-ethyl silicone resin after being processed in a with the alkali lignin modifier solution, stirring for 4h at room temperature and then adding waterborne acrylic resin with mass fraction of 7%, and stirring for 18min, to obtain the poly-ethyl silicone resin/lignin super-hydrophobic coating. Embodiment 6 a. dissolving poly-aryl organic silicon resin in thinner to prepare a poly-aryl organic silicon resin solution with mass fraction of 35%; b. dissolving alkali lignin in DMF to prepare an alkali lignin solution with mass fraction of 5%, dissolving sodium methoxide in ethanol to prepare a sodium methoxide solution with mass fraction of 10%, slowly mixing the alkali lignin solution with the sodium methoxide solution, heating to 180°C under the protection of nitrogen, then slowly adding octadecyl trimethoxy silane with mass fraction of 1%, reacting and stirring for 10h to form a steady modified alkali lignin solution; settling and separating out modified alkali lignin with ethanol to obtain an alkali lignin modifier which is then dried for later use; and c. dissolving the alkali lignin modifier in DMF to prepare an alkali lignin modifier solution with mass fraction of 26%, mixing the poly-aryl organic silicon resin after being processed in a with the alkali lignin modifier solution, stirring for 3.5h at room temperature and then adding waterborne acrylic resin with mass fraction of 1%, and stirring for 40min, to obtain the poly-aryl organic silicon resin/lignin super-hydrophobic coating. The coating obtained in embodiments 1-6 are respectively coated at two ends of a wood chip to perform a waterproof test, referring to FIG. 3, wherein A is the form of water drops on a wood chip after being coated with the super-hydrophobic coating, coagulated as spherical water drops; B is the form of water drops on an original wood chip, dispersed as elliptical water stains; and after a wood chip coated with the coating obtained in embodiments 1-6 is immersed in strong acid, neutral salt and strong base for 12h, referring to hydrophobic property test diagrams of FIG. 4-9, it is tested that after staying in strong acid, neutral salt and strong base for 12h, contact angles of a wood chip coated with the super-hydrophobic coating are still not smaller than 15i1 , indicating that the coating of the present invention has good water resistance and corrosion resistance. Application of a polar solvent and an initiator of alkali lignin are flexibly combined !5 according to actual conditions on the premise of not departing from the technical scheme of the present invention, hydrophobic resin and curing agent can be added as a selection according to conditions, and the adding mass is properly adjusted, to obtain a lignin fluoride-free super-hydrophobic insulated durable coating, and it is test by hydrophobic property test after a coated wood chip is immersed in strong acid, neutral salt and strong base for 12h, contact angles of the wood chips coated with the super-hydrophobic coating are not smaller than 151° , indicating that the coating of the present invention has good water resistance and corrosion resistance. According to the present invention, lignin extracted from soda pulping black liquor can be utilized to perform lignin modification, and cheap alkali lignin rich in content is utilized to construct a super-hydrophobic rough surface and used as a carrier of low-surface-energy substances, thereby being economical and environment-friendly. Other reagents used in the present invention are all reagents that may be purchased or prepared in the prior art, and are not further described herein. The foregoing embodiments are merely preferred embodiments for sufficiently describing the present invention, and the protection scope of the present invention is not limited herein. Equivalent substitution or transformation made by technicians of the technical field on the basis of the present invention all fall within the protection scope of the present invention. The protection scope of the present invention should be subject to the claims.
Claims (5)
1. A preparation method of a lignin/resin super-hydrophobic insulated corrosion-resistant coating, comprising:
dissolving alkali lignin in a polar solvent,
slowly adding an initiator to an obtained alkali lignin solution, heating to 90-180°C under
protection of nitrogen, slowly adding long-chain alkane methoxysilane to react to obtain a modified alkali lignin solution, settling and purifying the modified alkali lignin solution to separate out an alkali lignin modifier, and drying for later use, and
adding the alkali lignin modifier to a hydrophobic resin solution, stirring, and adding a curing agent to obtain a nanometer lignin fluoride-free super-hydrophobic coating.
2. The preparation method according to claim 1, wherein dissolving alkali lignin in any polar solvent out of acetone, dioxane, N,N-dimethylformamide and DMSO.
3. The preparation method according to claim 1 or claim 2, wherein slowly adding a triethylamine or sodium alkoxide initiator with mass concentration of 1%-10% to an obtained alkali lignin solution.
4. A lignin/resin super-hydrophobic insulated corrosion-resistant coating, being prepared by a preparation method according to any one of claims 1-3.
5. An application implemented by utilizing the lignin-chitosan based fluoride-free high-strength super-hydrophobic paper according to claim 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547026.0A CN110272682B (en) | 2019-06-24 | 2019-06-24 | Preparation method of lignin/resin super-hydrophobic insulating corrosion-resistant coating |
| CN201910547026.0 | 2019-06-24 |
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| AU2020101038A4 true AU2020101038A4 (en) | 2020-07-23 |
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| CN (1) | CN110272682B (en) |
| AU (1) | AU2020101038A4 (en) |
| NL (1) | NL2025892B1 (en) |
| ZA (1) | ZA202002968B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114316654A (en) * | 2021-12-29 | 2022-04-12 | 苏州嘉乐威新材料股份有限公司 | Anticorrosive coating and preparation method thereof |
| CN115160619A (en) * | 2022-08-22 | 2022-10-11 | 南京工业大学 | PVC/lignin-epoxy coating composite board and preparation method thereof |
| CN115386102A (en) * | 2022-08-19 | 2022-11-25 | 广州大学 | Phosphorized lignosulfonate nanoparticle and preparation method and application thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608683B (en) * | 2020-11-03 | 2022-05-24 | 中南林业科技大学 | Lignin-based super-hydrophobic coating and preparation method thereof |
| US11938440B2 (en) | 2020-12-15 | 2024-03-26 | International Business Machines Corporation | Smart fog net |
| CN115012246B (en) * | 2022-07-05 | 2023-06-13 | 齐鲁工业大学 | Biodegradable non-volatile poison bio-based paper coating agent and preparation method thereof |
| CN116855174A (en) * | 2023-07-21 | 2023-10-10 | 齐鲁工业大学(山东省科学院) | Anti-icing lignin super-hydrophobic coating and preparation method and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105038355A (en) * | 2015-04-28 | 2015-11-11 | 桐城市新丰彩印包装有限公司 | High-strength high-adhesion anti-corrosion coating |
| CN108492943B (en) * | 2018-05-03 | 2019-04-02 | 福建省恒鼎建筑工程有限公司 | A kind of insulated column for power equipment |
| CN109233639B (en) * | 2018-08-24 | 2021-06-11 | 大连工业大学 | Preparation method of edible super-hydrophobic surface |
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2019
- 2019-06-24 CN CN201910547026.0A patent/CN110272682B/en active Active
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- 2020-05-13 ZA ZA2020/02968A patent/ZA202002968B/en unknown
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114316654A (en) * | 2021-12-29 | 2022-04-12 | 苏州嘉乐威新材料股份有限公司 | Anticorrosive coating and preparation method thereof |
| CN114316654B (en) * | 2021-12-29 | 2022-12-13 | 苏州嘉乐威新材料股份有限公司 | Anticorrosive coating and preparation method thereof |
| CN115386102A (en) * | 2022-08-19 | 2022-11-25 | 广州大学 | Phosphorized lignosulfonate nanoparticle and preparation method and application thereof |
| CN115160619A (en) * | 2022-08-22 | 2022-10-11 | 南京工业大学 | PVC/lignin-epoxy coating composite board and preparation method thereof |
| CN115160619B (en) * | 2022-08-22 | 2023-04-28 | 南京工业大学 | PVC/lignin-epoxy coating composite board and preparation method thereof |
Also Published As
| Publication number | Publication date |
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| NL2025892A (en) | 2021-01-26 |
| ZA202002968B (en) | 2021-06-30 |
| CN110272682B (en) | 2021-03-30 |
| CN110272682A (en) | 2019-09-24 |
| NL2025892B1 (en) | 2022-06-01 |
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