CN114950915A - Environment-friendly super-hydrophobic wood treatment process - Google Patents

Environment-friendly super-hydrophobic wood treatment process Download PDF

Info

Publication number
CN114950915A
CN114950915A CN202210665275.1A CN202210665275A CN114950915A CN 114950915 A CN114950915 A CN 114950915A CN 202210665275 A CN202210665275 A CN 202210665275A CN 114950915 A CN114950915 A CN 114950915A
Authority
CN
China
Prior art keywords
wood
liquid
hydrophobic
drying
epoxy resin
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
Application number
CN202210665275.1A
Other languages
Chinese (zh)
Inventor
吴旭艳
钟静方
谢磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Hexiaoyi Technology Co ltd
Original Assignee
Shanghai Hexiaoyi Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Hexiaoyi Technology Co ltd filed Critical Shanghai Hexiaoyi Technology Co ltd
Priority to CN202210665275.1A priority Critical patent/CN114950915A/en
Publication of CN114950915A publication Critical patent/CN114950915A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
    • 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
    • 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
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • 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
    • C09D7/63—Additives non-macromolecular organic
    • 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
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2504/00—Epoxy polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/006—Additives being defined by their surface area
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention discloses an environment-friendly super-hydrophobic wood treatment process, which relates to the technical field of wood treatment and comprises the following steps: (1) drying the wood; (2) coating a maleic anhydride solution on the surface of the dried wood; (3) preparing modified super-hydrophobic brushing liquid: the modified super-hydrophobic coating liquid comprises two parts, namely a bottom layer liquid and a surface layer liquid; (4) obtaining bottom layer liquid; (5) obtaining surface layer liquid; (6) spraying the bottom layer liquid on the surface of the wood in a spraying mode, drying, spraying the surface layer liquid, and drying after spraying; according to the invention, the surface of the wood is treated to form a super-hydrophobic coating on the surface of the wood, so that the surface of the wood has a good hydrophobic effect, and the hydrophobic property of the surface of the wood can be improved by respectively spraying the bottom layer liquid and the surface layer liquid to form the composite coating.

Description

Environment-friendly super-hydrophobic wood treatment process
Technical Field
The invention belongs to the technical field of wood treatment, and particularly relates to an environment-friendly super-hydrophobic wood treatment process.
Background
With the development of society, more and more people begin to like the solid wood furniture made of wood, and the solid wood furniture has stronger ornamental value because of obvious heavy feeling and various surface grains. However, wood-processed furniture is prone to insect pest and microbial corrosion due to the characteristics of wood, and especially, wood furniture is prone to corrosion after being wetted with water, so that surface treatment of wood is required to improve waterproof performance.
According to the 'wood treatment method' provided by the Chinese patent publication No. CN106003308A, the invention provides a wood treatment method, and the specific method is that dry wood is put into treatment liquid for 0.5-1.5 h; taking out, curing at normal temperature for 5-8 hours or heating to 35-50 ℃ for 0.5-1.5 hours to completely cure. The method provided by the invention can obviously slow down the cracking of the wood, is not easy to absorb water and deform, improves the wear resistance and corrosion resistance, obviously improves the hardness, prevents chemical substances from permeating outwards, and obviously improves various properties of the wood.
Therefore, further improvements to the prior art are needed.
Disclosure of Invention
The invention aims to provide an environment-friendly super-hydrophobic wood treatment process aiming at the existing problems.
The invention is realized by the following technical scheme:
an environment-friendly super-hydrophobic wood treatment process comprises the following steps:
(1) drying the wood at the drying temperature of 60 ℃ to obtain dried wood;
(2) coating a maleic anhydride solution on the surface of the dried wood, and then drying the wood in a drying oven at the drying temperature of 80 ℃ to obtain coated wood;
(3) preparing modified super-hydrophobic brushing liquid: the modified super-hydrophobic coating liquid comprises two parts, namely a bottom layer liquid and a surface layer liquid;
(4) the preparation method of the bottom layer liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 5-7:1-2:15-18, and uniformly stirring to obtain primary epoxy resin dispersion liquid;
adding the modified zinc oxide nanoparticles into the primary epoxy resin dispersion liquid, and performing ultrasonic dispersion for 10-15min to obtain a bottom liquid;
(5) the preparation method of the surface liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 5-7:1-2:25-30, uniformly stirring to obtain a secondary epoxy resin dispersion liquid,
adding tetraethoxysilane into the secondary epoxy resin dispersion liquid, magnetically stirring for 25min, and performing ultrasonic dispersion treatment for 15min to obtain surface liquid;
(6) spraying the bottom layer liquid on the surface of the wood by adopting a spraying mode, then transferring the wood into a drying oven for drying treatment, then spraying the surface layer liquid, after the spraying is finished, carrying out vacuum drying treatment, and naturally cooling to room temperature to obtain the wood-plastic composite material.
As a further technical scheme, the mass fraction of the maleic anhydride solution is 1.8-2.5%;
the brushing amount of the maleic anhydride solution is 1mL/cm 2 。
As a further technical scheme, the curing agent is diethylaminopropylamine.
As a further technical scheme, the preparation method of the modified zinc oxide nano particles comprises the following steps:
adding perfluorooctyl triethoxysilane into isopropanol, stirring uniformly, adding zinc oxide nanoparticles into the isopropanol, adjusting the temperature to 75 ℃, keeping the temperature and stirring for 30min, dropwise adding a dodecafluoroheptyl methacrylate monomer solution, adjusting the temperature to 62 ℃, stirring at the rotating speed of 1000r/min for 1 hour, naturally cooling to room temperature, standing for 10 hours, and performing suction filtration;
and then, washing the particles by using clear water to filter the particles to be neutral, and drying the particles to be constant in weight to obtain the nano-particles.
As a further technical scheme, the mixing mass ratio of the perfluorooctyl triethoxysilane to the isopropanol is 3.5: 20-25;
the mixing mass ratio of the zinc oxide nano particles to the isopropanol is 1.2: 30-35.
As a further technical scheme, the mass fraction of the dodecafluoroheptyl methacrylate monomer solution is 5.8 percent;
the mixing mass ratio of the dodecafluoroheptyl methacrylate monomer solution to the isopropanol is 1.8: 10-12.
According to a further technical scheme, the mixing mass ratio of the secondary epoxy resin dispersion liquid to the tetraethoxysilane is 15: 1-1.4.
As a further technical scheme, the spraying pressure is 7.5 MPa.
As a further technical scheme, the vacuum drying temperature is 55 ℃.
Nano zinc oxide (ZnO), white hexagonal crystal or spherical particles, the particle size is less than 100nm, the average particle size is 50nm, and the specific surface area is more than 4m 2/g. Has extremely high chemical activity, excellent catalytic activity and photocatalytic activity, infrared ray and ultraviolet ray radiation resisting and sterilizing functions and high flowability.
According to the invention, by introducing the modified nano zinc oxide particles, the ultraviolet radiation resistance function of the wood surface can be improved, and meanwhile, a micro-nano composite structure can be formed to form a super-hydrophobic coating structure, so that the super-hydrophobic performance of the wood surface is endowed.
Through introducing modified zinc oxide nano particles, specifically can combine with polymer molecules, form stable three-dimensional network chain structure, lay the foundation for surface layer liquid forms surface layer coating, and surface layer liquid depends on the coating that bottom layer liquid formed and solidifies the growth to form little sodium composite structure, the arrangement and the orientation of little nano structure can determine the wet state and the liquid motion on the surface layer that timber formed, can improve the hydrophobic property on timber surface.
Compared with the prior art, the invention has the following advantages:
according to the invention, the surface of the wood is treated to form a super-hydrophobic coating on the surface of the wood, so that the surface of the wood has a good hydrophobic effect, and the hydrophobic property of the surface of the wood can be improved by respectively spraying the bottom layer liquid and the surface layer liquid to form the composite coating.
The hydrophobic coating formed on the surface of the wood also has a good cleaning function, and surface stains and dust are not easy to adhere and are easy to remove.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An environment-friendly super-hydrophobic wood treatment process comprises the following steps:
(1) drying the wood at the drying temperature of 60 ℃ to obtain dried wood;
(2) coating a maleic anhydride solution on the surface of the dried wood, and then drying the wood in a drying oven at the drying temperature of 80 ℃ to obtain coated wood;
(3) preparing modified super-hydrophobic brushing liquid: the modified super-hydrophobic coating liquid comprises two parts, namely a bottom layer liquid and a surface layer liquid;
(4) the preparation method of the bottom layer liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 5-7:1-2:15-18, and uniformly stirring to obtain primary epoxy resin dispersion liquid;
adding modified zinc oxide nanoparticles into the primary epoxy resin dispersion liquid, performing ultrasonic dispersion for 10-15min to obtain a bottom layer liquid;
(5) the preparation method of the surface liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 5-7:1-2:25-30, uniformly stirring to obtain a secondary epoxy resin dispersion liquid,
adding tetraethoxysilane into the secondary epoxy resin dispersion liquid, magnetically stirring for 25min, and performing ultrasonic dispersion treatment for 15min to obtain surface liquid;
(6) spraying the bottom layer liquid on the surface of the wood by adopting a spraying mode, then transferring the wood into a drying oven for drying treatment, then spraying the surface layer liquid, after the spraying is finished, carrying out vacuum drying treatment, and naturally cooling to room temperature to obtain the wood-plastic composite material.
The mass fraction of the maleic anhydride solution is 1.8-2.5%;
the brushing amount of the maleic anhydride solution is 1mL/cm 2 。
The curing agent is diethylaminopropylamine.
The preparation method of the modified zinc oxide nano particles comprises the following steps:
adding perfluorooctyl triethoxysilane into isopropanol, stirring uniformly, adding zinc oxide nanoparticles into the isopropanol, adjusting the temperature to 75 ℃, keeping the temperature and stirring for 30min, dropwise adding a dodecafluoroheptyl methacrylate monomer solution, adjusting the temperature to 62 ℃, stirring at the rotating speed of 1000r/min for 1 hour, naturally cooling to room temperature, standing for 10 hours, and performing suction filtration;
and then, washing the particles by using clear water to filter the particles to be neutral, and drying the particles to be constant in weight to obtain the nano-particles.
The mixing mass ratio of the perfluorooctyl triethoxysilane to the isopropanol is 3.5: 20-25;
the mixing mass ratio of the zinc oxide nano particles to the isopropanol is 1.2: 30-35.
The mass fraction of the dodecafluoroheptyl methacrylate monomer solution is 5.8 percent;
the mixing mass ratio of the dodecafluoroheptyl methacrylate monomer solution to the isopropanol is 1.8: 10-12.
The mixing mass ratio of the secondary epoxy resin dispersion liquid to the tetraethoxysilane is 15: 1-1.4.
The spraying pressure is 7.5 MPa.
The vacuum drying temperature was 55 ℃.
The epoxy resin is a high molecular polymer, has a molecular formula of (C11H12O3) n, and is a general name of a polymer containing more than two epoxy groups in a molecule. It is a polycondensation product of epichlorohydrin and bisphenol A or a polyol. Because of the chemical activity of the epoxy group, a plurality of compounds containing active hydrogen can be used for ring opening, curing and crosslinking to generate a network structure, so that the epoxy resin is a thermosetting resin.
Maleic anhydride, also known as anhydromalic anhydride, maleic anhydride, and maleic anhydride, is anhydride of maleic acid, and is white crystal with strong pungent odor at room temperature, and has chemical formula C 4 H 2 O 3 。
Nano zinc oxide (ZnO), white hexagonal crystal or spherical particle with particle size less than 100nm, average particle size of 50nm, and specific surface area greater than 4m 2 (ii) in terms of/g. Has extremely high chemical activity, excellent catalytic activity and photocatalytic activity, infrared ray and ultraviolet ray radiation resisting and sterilizing functions and high flowability.
According to the invention, by introducing the modified nano zinc oxide particles, the ultraviolet radiation resistance function of the wood surface can be improved, and meanwhile, a micro-nano composite structure can be formed to form a super-hydrophobic coating structure, so that the super-hydrophobic performance of the wood surface is endowed.
The following are specific examples:
example 1
An environment-friendly super-hydrophobic wood treatment process comprises the following steps:
(1) drying the wood at the drying temperature of 60 ℃ to obtain dried wood;
(2) coating a maleic anhydride solution on the surface of the dried wood, and then drying the wood in a drying oven at the drying temperature of 80 ℃ to obtain coated wood;
(3) preparing modified super-hydrophobic brushing liquid: the modified super-hydrophobic coating liquid comprises two parts, namely a bottom layer liquid and a surface layer liquid;
(4) the preparation method of the bottom layer liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to a mass ratio of 7:2:18, and uniformly stirring to obtain primary epoxy resin dispersion liquid;
adding modified zinc oxide nanoparticles into the primary epoxy resin dispersion liquid, performing ultrasonic dispersion for 15min to obtain a bottom liquid;
(5) the preparation method of the surface liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 7:2:30, uniformly stirring to obtain secondary epoxy resin dispersion liquid,
adding tetraethoxysilane into the secondary epoxy resin dispersion liquid, magnetically stirring for 25min, and performing ultrasonic dispersion treatment for 15min to obtain surface liquid;
(6) spraying the bottom layer liquid on the surface of the wood by adopting a spraying mode, then transferring the wood into a drying oven for drying treatment, then spraying the surface layer liquid, after the spraying is finished, carrying out vacuum drying treatment, and naturally cooling to room temperature to obtain the wood-plastic composite material.
The mass fraction of the maleic anhydride solution is 2.5%;
the brushing amount of the maleic anhydride solution is 1mL/cm 2 。
The curing agent is diethylaminopropylamine.
The preparation method of the modified zinc oxide nano particles comprises the following steps:
adding perfluorooctyl triethoxysilane into isopropanol, stirring uniformly, adding zinc oxide nanoparticles into the isopropanol, adjusting the temperature to 75 ℃, keeping the temperature and stirring for 30min, dropwise adding a dodecafluoroheptyl methacrylate monomer solution, adjusting the temperature to 62 ℃, stirring at the rotating speed of 1000r/min for 1 hour, naturally cooling to room temperature, standing for 10 hours, and performing suction filtration;
and then, washing the particles by using clear water to filter the particles to be neutral, and drying the particles to be constant in weight to obtain the nano-particles.
The mixing mass ratio of the perfluorooctyl triethoxysilane to the isopropanol is 3.5: 25;
the mixing mass ratio of the zinc oxide nano particles to the isopropanol is 1.2: 35.
The mass fraction of the dodecafluoroheptyl methacrylate monomer solution is 5.8 percent;
the mixing mass ratio of the dodecafluoroheptyl methacrylate monomer solution to the isopropanol is 1.8: 12.
The mixing mass ratio of the secondary epoxy resin dispersion liquid to the tetraethoxysilane is 15: 1.4.
The spraying pressure is 7.5 MPa.
The vacuum drying temperature was 55 ℃.
Example 2
An environment-friendly super-hydrophobic wood treatment process comprises the following steps:
(1) drying the wood at the drying temperature of 60 ℃ to obtain dried wood;
(2) coating a maleic anhydride solution on the surface of the dried wood, and then drying the wood in a drying oven at the drying temperature of 80 ℃ to obtain coated wood;
(3) preparing modified super-hydrophobic brushing liquid: the modified super-hydrophobic coating liquid comprises two parts, namely a bottom layer liquid and a surface layer liquid;
(4) the preparation method of the bottom layer liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to a mass ratio of 5:1:15, and uniformly stirring to obtain primary epoxy resin dispersion liquid;
adding the modified zinc oxide nanoparticles into the primary epoxy resin dispersion liquid, and performing ultrasonic dispersion for 10min to obtain a bottom layer liquid;
(5) the preparation method of the surface layer liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 5:1:25, uniformly stirring to obtain secondary epoxy resin dispersion liquid,
adding tetraethoxysilane into the secondary epoxy resin dispersion liquid, magnetically stirring for 25min, and performing ultrasonic dispersion treatment for 15min to obtain surface liquid;
(6) spraying the bottom layer liquid on the surface of the wood by adopting a spraying mode, then transferring the wood into a drying oven for drying treatment, then spraying the surface layer liquid, after the spraying is finished, carrying out vacuum drying treatment, and naturally cooling to room temperature to obtain the wood-plastic composite material.
The mass fraction of the maleic anhydride solution is 1.8%;
the brushing amount of the maleic anhydride solution is 1mL/cm 2 。
The curing agent is diethylaminopropylamine.
The preparation method of the modified zinc oxide nano particles comprises the following steps:
adding perfluorooctyl triethoxysilane into isopropanol, stirring uniformly, adding zinc oxide nanoparticles into the isopropanol, adjusting the temperature to 75 ℃, keeping the temperature and stirring for 30min, dropwise adding a dodecafluoroheptyl methacrylate monomer solution, adjusting the temperature to 62 ℃, stirring at the rotating speed of 1000r/min for 1 hour, naturally cooling to room temperature, standing for 10 hours, and performing suction filtration;
and then, washing the particles by using clear water to filter the particles to be neutral, and drying the particles to be constant in weight to obtain the nano-particles.
The mixing mass ratio of the perfluorooctyl triethoxysilane to the isopropanol is 3.5: 20;
the mixing mass ratio of the zinc oxide nano particles to the isopropanol is 1.2: 30.
The mass fraction of the dodecafluoroheptyl methacrylate monomer solution is 5.8 percent;
the mixing mass ratio of the dodecafluoroheptyl methacrylate monomer solution to the isopropanol is 1.8: 10.
The mixing mass ratio of the secondary epoxy resin dispersion liquid to the tetraethoxysilane is 15:1.
The spraying pressure is 7.5 MPa.
The vacuum drying temperature was 55 ℃.
Example 3
An environment-friendly super-hydrophobic wood treatment process comprises the following steps:
(1) drying the wood at the drying temperature of 60 ℃ to obtain dried wood;
(2) coating a maleic anhydride solution on the surface of the dried wood, and then drying the wood in a drying oven at the drying temperature of 80 ℃ to obtain coated wood;
(3) preparing modified super-hydrophobic brushing liquid: the modified super-hydrophobic coating liquid comprises two parts, namely a bottom layer liquid and a surface layer liquid;
(4) the preparation method of the bottom layer liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 6:1.5:16, and uniformly stirring to obtain primary epoxy resin dispersion liquid;
adding modified zinc oxide nanoparticles into the primary epoxy resin dispersion liquid, performing ultrasonic dispersion for 12min to obtain a bottom liquid;
(5) the preparation method of the surface liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 6:1.5:28, uniformly stirring to obtain a secondary epoxy resin dispersion liquid,
adding tetraethoxysilane into the secondary epoxy resin dispersion liquid, magnetically stirring for 25min, and performing ultrasonic dispersion treatment for 15min to obtain surface liquid;
(6) spraying the bottom layer liquid on the surface of the wood by adopting a spraying mode, then transferring the wood into a drying oven for drying treatment, then spraying the surface layer liquid, after the spraying is finished, carrying out vacuum drying treatment, and naturally cooling to room temperature to obtain the wood-plastic composite material.
The mass fraction of the maleic anhydride solution is 2.0 percent;
the brushing amount of the maleic anhydride solution is 1mL/cm 2 。
The curing agent is diethylaminopropylamine.
The preparation method of the modified zinc oxide nano particles comprises the following steps:
adding perfluorooctyl triethoxysilane into isopropanol, stirring uniformly, adding zinc oxide nanoparticles into the isopropanol, adjusting the temperature to 75 ℃, keeping the temperature and stirring for 30min, dropwise adding a dodecafluoroheptyl methacrylate monomer solution, adjusting the temperature to 62 ℃, stirring at the rotating speed of 1000r/min for 1 hour, naturally cooling to room temperature, standing for 10 hours, and performing suction filtration;
and then, washing the particles by using clear water to filter the particles to be neutral, and drying the particles to be constant in weight to obtain the nano-particles.
The mixing mass ratio of the perfluorooctyl triethoxysilane to the isopropanol is 3.5: 22;
the mixing mass ratio of the zinc oxide nano particles to the isopropanol is 1.2: 33.
The mass fraction of the dodecafluoroheptyl methacrylate monomer solution is 5.8 percent;
the mixing mass ratio of the dodecafluoroheptyl methacrylate monomer solution to the isopropanol is 1.8: 11.
The mixing mass ratio of the secondary epoxy resin dispersion liquid to the tetraethoxysilane is 15: 1.2.
The spraying pressure is 7.5 MPa.
The vacuum drying temperature was 55 ℃.
Comparative example 1: the difference from example 1 is that no top coat liquid was sprayed.
Comparative example 2: the difference from example 1 is that no ethyl orthosilicate was added to the surface layer liquid.
Experiment of
Contact angle measurement:
the apparent contact angle of a water drop between the coatings of the examples and comparative examples was determined using an OSA60 model optical contact angle tester. The amount of the micro-syringe droplets was 5. mu.L, and 5 different points were measured for each sample, and the average value was taken.
TABLE 1
Contact Angle/°
Example 1 162.3
Example 2 164.5
Example 3 163.7
Comparative example 1 112.8
Comparative example 2 141.9
As can be seen from Table 1, the treatment process of the invention can form a layer of compact hydrophobic coating on the surface of wood, the contact angle of the surface of the hydrophobic coating treated by the treatment process of the invention is greatly increased, and the hydrophobic property is obviously improved.
And (3) rolling angle measurement:
the apparent rolling angle of the water drop on the coating was determined using an OSA60 model optical contact angle tester. The drop size of the micro-syringe was 5. mu.L, and 5 different spots were measured for each sample, and the average value was taken:
TABLE 2
Roll angle/°
Example 1 2.3
Example 2 2.1
Example 3 2.6
Comparative example 1 19
Comparative example 2 11
As can be seen from Table 1, the roll angle of the coating formed on the wood surface by the process of the present invention is greatly reduced.
And (3) antifouling performance test: dust was scattered on the surface of the wood of the examples and comparative examples, and the self-cleaning effect of the wood surface when water drops rolled was observed:
TABLE 3
Figure BDA0003691461300000091
Figure BDA0003691461300000101
As can be seen from Table 3, the wood surface treated by the process of the present invention has excellent self-cleaning function.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited to the illustrated embodiments, and all the modifications and equivalents of the embodiments may be made without departing from the spirit of the present invention.

Claims (9)

1. An environment-friendly super-hydrophobic wood treatment process is characterized in that: the method comprises the following steps:
(1) drying the wood at the drying temperature of 60 ℃ to obtain dried wood;
(2) coating a maleic anhydride solution on the surface of the dried wood, and then drying the wood in a drying oven at the drying temperature of 80 ℃ to obtain coated wood;
(3) preparing modified super-hydrophobic brushing liquid: the modified super-hydrophobic coating liquid comprises two parts, namely a bottom layer liquid and a surface layer liquid;
(4) the preparation method of the bottom layer liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 5-7:1-2:15-18, and uniformly stirring to obtain primary epoxy resin dispersion liquid;
adding the modified zinc oxide nanoparticles into the primary epoxy resin dispersion liquid, and performing ultrasonic dispersion for 10-15min to obtain a bottom liquid;
(5) the preparation method of the surface liquid comprises the following steps: sequentially adding epoxy resin, a curing agent and absolute ethyl alcohol into a stirrer according to the mass ratio of 5-7:1-2:25-30, uniformly stirring to obtain a secondary epoxy resin dispersion liquid,
adding tetraethoxysilane into the secondary epoxy resin dispersion liquid, magnetically stirring for 25min, and performing ultrasonic dispersion treatment for 15min to obtain surface liquid;
(6) spraying the bottom layer liquid on the surface of the wood by adopting a spraying mode, then transferring the wood into a drying oven for drying treatment, then spraying the surface layer liquid, after the spraying is finished, carrying out vacuum drying treatment, and naturally cooling to room temperature to obtain the wood-plastic composite material.
2. The environment-friendly super-hydrophobic wood treatment process as claimed in claim 1, wherein the mass fraction of the maleic anhydride solution is 1.8-2.5%;
the brushing amount of the maleic anhydride solution is 1mL/cm 2 。
3. The environment-friendly superhydrophobic wood treatment process according to claim 1, wherein the curing agent is diethylaminopropylamine.
4. The environment-friendly super-hydrophobic wood treatment process as claimed in claim 1, wherein the preparation method of the modified zinc oxide nanoparticles comprises:
adding perfluorooctyl triethoxysilane into isopropanol, stirring uniformly, adding zinc oxide nanoparticles into the isopropanol, adjusting the temperature to 75 ℃, keeping the temperature and stirring for 30min, dropwise adding a dodecafluoroheptyl methacrylate monomer solution, adjusting the temperature to 62 ℃, stirring at the rotating speed of 1000r/min for 1 hour, naturally cooling to room temperature, standing for 10 hours, and performing suction filtration;
and then, washing the particles by using clear water to filter the particles to be neutral, and drying the particles to be constant in weight to obtain the nano-particles.
5. The environment-friendly super-hydrophobic wood treatment process as claimed in claim 4, wherein the mixing mass ratio of the perfluorooctyltriethoxysilane to the isopropanol is 3.5: 20-25;
the mixing mass ratio of the zinc oxide nano particles to the isopropanol is 1.2: 30-35.
6. The environment-friendly super-hydrophobic wood treatment process as claimed in claim 4, wherein the mass fraction of the dodecafluoroheptyl methacrylate monomer solution is 5.8%;
the mixing mass ratio of the dodecafluoroheptyl methacrylate monomer solution to the isopropanol is 1.8: 10-12.
7. The environment-friendly super-hydrophobic wood treatment process as claimed in claim 6, wherein the mixing mass ratio of the secondary epoxy resin dispersion liquid to the tetraethoxysilane is 15: 1-1.4.
8. The environment-friendly superhydrophobic wood treatment process according to claim 1, wherein the spraying pressure is 7.5 MPa.
9. The environment-friendly superhydrophobic wood treatment process according to claim 1, wherein the vacuum drying temperature is 55 ℃.
CN202210665275.1A 2022-06-13 2022-06-13 Environment-friendly super-hydrophobic wood treatment process Pending CN114950915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210665275.1A CN114950915A (en) 2022-06-13 2022-06-13 Environment-friendly super-hydrophobic wood treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210665275.1A CN114950915A (en) 2022-06-13 2022-06-13 Environment-friendly super-hydrophobic wood treatment process

Publications (1)

Publication Number Publication Date
CN114950915A true CN114950915A (en) 2022-08-30

Family

ID=82961608

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210665275.1A Pending CN114950915A (en) 2022-06-13 2022-06-13 Environment-friendly super-hydrophobic wood treatment process

Country Status (1)

Country Link
CN (1) CN114950915A (en)

Similar Documents

Publication Publication Date Title
CN106243966B (en) A kind of double-component aqueous woodenware white finish paint of composite multifunction and preparation method thereof
CN105619558A (en) Preparation method of organic-inorganic hybrid super-hydrophobic and oleophobic wood modifier with mold-proof, sterilization, anti-flaming and weather-proof properties
CN107987570A (en) A kind of nano-TiO2In-situ hybridization antibacterial waterproof coating inorganic agent and preparation method thereof
CN106118422B (en) Nano-meter SiO_22Compound polysiloxane-modified aqueous terpenyl EP/PU super-hydrophobic automatic cleaning polymer and preparation method thereof
CN108641419B (en) Super-hydrophilic coating sol and preparation and use methods thereof
CN104312396A (en) Penetration type nano stone protecting agent and preparation method thereof
CN104761934A (en) Antimicrobial non-viscous aqueous inorganic nano coating finishing paint and application thereof
CN110093101B (en) Paint for cosmetic packaging bottle and preparation method and coating process thereof
WO2022127116A1 (en) Preparation method for and application of weather-resistant, wear-resistant and hydrophobic aid
CN115433497B (en) Antifouling and antibacterial water-based wood paint and preparation method thereof
CN110964395A (en) High-durability super-hydrophobic and super-oleophobic transparent coating and preparation method thereof
CN113372801A (en) PU (polyurethane) antibacterial paint as well as preparation method and application thereof
CN111718637A (en) Wall paint for decoration and preparation method thereof
CN107474735A (en) A kind of wood wax oil of ultraviolet light solidification
CN104877551A (en) Ultraviolet curable water-based composite antibacterial paint used for wooden products
US20200269461A1 (en) Method for preparing room temperature cured multifunctional wood modifier and method for wood modification
CN106634290A (en) Formaldehyde-free environment-friendly wall paint and preparation technology thereof
CN112920667A (en) Organic-inorganic antibacterial antifouling interior wall coating and preparation method thereof
CN104745025A (en) Environment-friendly type multifunctional nano modified coating and spraying method thereof
CN111978772A (en) Antibacterial and antivirus powder coating and preparation process thereof
Wang et al. Bamboo surface coated with polymethylsilsesquioxane/Cu-containing nanoparticles (PMS/CuNP) xerogel for superhydrophobic and anti-mildew performance
CN114950915A (en) Environment-friendly super-hydrophobic wood treatment process
CN109647680B (en) Method for preparing nano ZnO-GO/waterborne polyurethane super-amphiphobic coating by adopting spraying method
CN106243868A (en) A kind of fork truck steel ring antifouling paint
CN108948803A (en) A kind of super-hydrophobic coat 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
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20220830