CN104441127B - A kind of super-hydrophobic timber and preparation method thereof - Google Patents
A kind of super-hydrophobic timber and preparation method thereof Download PDFInfo
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- CN104441127B CN104441127B CN201410653342.3A CN201410653342A CN104441127B CN 104441127 B CN104441127 B CN 104441127B CN 201410653342 A CN201410653342 A CN 201410653342A CN 104441127 B CN104441127 B CN 104441127B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
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Abstract
The present invention provides a kind of super-hydrophobic timber and preparation method thereof, and this wood surface is polyvinyl alcohol film layer, and described polyvinyl alcohol film surface is coated with uniform TiO2/SiO2Nanocomposite films layer, TiO2/SiO2Nanostructured produces chemical bonding, described TiO by hydroxyl effect with timber/polyvinyl alcohol composite surface2/SiO2Nanocomposite films layer contains uniform micron order groove and nanoscale projection, and self assembly has low-surface energy substance, the water droplet contact angle of described super-hydrophobic timber to reach 153 °, and roll angle is less than 5 °.The super-hydrophobic timber preparation method of the present invention has the advantages that step is simple, reaction condition is easily achieved, and can be with large area reaction preparation, it is not necessary to follow-up low-surface energy substance is modified, and easy control of reaction conditions, cost is relatively low, cleanliness without any pollution.The super-hydrophobic timber of preparation in the present invention, while there is super-hydrophobicity, the best ageing-resistant performance.
Description
Technical field
The present invention relates to Wooden modifying field, be specifically related to super-hydrophobic timber and preparation method thereof.
Background technology
Timber environmental protection is renewable, it is easy to processing, thus is widely used in social and economic construction and human habitat.Timber is mainly made up of cellulose, hemicellulose, lignin and extract, and glucose in cellulose and hemicellulose and other monosaccharide are owing to existing substantial amounts of hydrophilic radical, so that timber shows extremely strong water absorption.After timber water suction, it is easy to cause size distortion, rotten, bacterium worm erosion, the serious timber use value that reduces, restriction range, reduction of service life.The super-hydrophobic process of timber, the hydrophobic ability extremely strong by giving timber, thus significantly improve wood dimensional stability, the most also there is the several functions such as mildew-resistant, insect protected, uvioresistant, timber range will be widened, prolonging wood using life, thus become the focus in lumber functionality improvement research.
At present, the super-hydrophobic processing method of timber is mostly divided into two steps, and the first step builds micro-nano coarse structure at wood surface, and second step uses low-surface energy substance to modify coarse structure.Existing processing method not only complex process, the low-surface energy substance price of use is also relatively expensive.Therefore, use the most either physically or chemically, utilize widely used cheap raw material, prepare large-area super-hydrophobic timber and there is great realistic meaning.
Summary of the invention
The technical problem to be solved is, overcomes the deficiency and defect mentioned in background above technology, it is provided that super-hydrophobic timber that a kind of one step hydro thermal method prepares and preparation method thereof.
For solving above-mentioned technical problem, the technical scheme that the present invention proposes is a kind of super-hydrophobic timber, and this wood surface is polyvinyl alcohol (PVA) film layer, and described polyvinyl alcohol film surface is coated with uniform TiO2/SiO2Nanocomposite films layer, TiO2/SiO2Nanostructured produces chemical bonding, described TiO by hydroxyl effect with timber/polyvinyl alcohol composite surface2/SiO2Nanocomposite films layer contains uniform micron order groove and nanoscale projection, and self assembly has low-surface energy substance, the water droplet contact angle of described super-hydrophobic timber to reach 150 °～153 °, and roll angle is less than 5 °.Timber and the substantial amounts of hydroxyl of polyvinyl alcohol film surface can be that inorganic particulate provides nucleation and growth substrate, can make SiO by hydro-thermal method2/TiO2Composite nanostructure produces chemical bonding by hydroxyl effect with timber.
Above-mentioned super-hydrophobic timber, it is preferred that the size of described micron order groove is 10 ~ 80 μm, the size of described nanoscale projection is 20 ~ 100nm.
Above-mentioned super-hydrophobic timber, it is preferred that described low-surface energy substance is silane coupler.
Above-mentioned super-hydrophobic timber, it is preferred that described silane coupler is any one in VTES, MTMS and hexadecyl.
As a total inventive concept, present invention also offers the preparation method of above-mentioned super-hydrophobic timber, comprise the following steps:
(1) timber that sawing is good is soaked in sodium hydroxide solution, uses deionized water to clean timber under Ultrasonic Conditions, then timber is vacuum dried；After alkali processes, enhance the adhesive force of film layer and be bonded；
(2) timber is soaked in poly-vinyl alcohol solution, and makes polyvinyl alcohol form uniform thin layer at wood surface with ultrasound wave dispersion, be then vacuum dried；
(3) configuration solution A: add 4 ~ 15 parts by volume titanium salts and be dissolved in dehydrated alcohol, stir；Configuration solution B: add 1 ~ 5 parts by volume acid, 3 ~ 8 parts by volume deionized waters and be dissolved in dehydrated alcohol, stirring；Then solution A is mixed with solution B, be uniformly mixing to obtain mixed liquor；Above-mentioned mixed liquor is transferred to hydro-thermal reaction container, adds 4 ~ 9 parts by volume silane couplers and 0.1 ~ 0.5 weight portion benzoyl peroxide, stir；
The unit ratio corresponding relation of described weight portion and parts by volume is g/ml；
(4) in hydro-thermal reaction container, the timber after step (2) processes is added, or the timber after step (2) being processed before adding silane coupler and benzoyl peroxide puts in above-mentioned mixed liquor, carry out hydro-thermal reaction, clean timber after having reacted and be dried.The addition of silane coupler is to hydrothermal reaction process TiO2Crystallization serve inhibitory action, after silane coupler and titanium salt cohydrolysis, benzoyl peroxide promotes the polymerization simultaneously containing Ti, Si structures alone, ultimately generates uniform films layer.
Above-mentioned preparation method, it is preferred that described titanium salt is titanium tetrachloride or butyl titanate；Acid is concentrated nitric acid；Siloxanes is any one in VTES, MTMS and hexadecyl；Wherein butyl titanate, acid, dehydrated alcohol, silane coupler, benzoyl peroxide concentration are analytical pure, and the mass fraction of described concentrated nitric acid is 65% ~ 68%.
Above-mentioned preparation method, it is preferred that the mass fraction of described sodium hydroxide solution is 3 ~ 8%, the time soaked in described step (1) is 12 ~ 14h, uses deionized water to clean 10 ~ 20min under Ultrasonic Conditions.
Above-mentioned preparation method, it is preferred that the mass fraction of described poly-vinyl alcohol solution is 10 ~ 20%, in described step (2), vacuum drying temperature is 30 ~ 60 DEG C, and the time is 1 ~ 3h.
Above-mentioned preparation method, it is preferred that described solution A stirs 30 ~ 60min after mixing with solution B, stirs 10 ~ 30min after adding silane coupler and benzoyl peroxide.
Above-mentioned preparation method, it is preferred that described hydrothermal reaction condition is: react 4 ~ 12h under conditions of temperature is 70 ~ 120 DEG C；Described hydro-thermal reaction uses deionized water to clean timber after completing.
In the present invention, the solution A of configuration is reactant diluent.The solution B of configuration is dehydrated alcohol, acid and the mixed solution of water, and water can promote that the hydrolysis of titanium salt, acid play regulation pH value effect.When solution A and solution B mixing, a small amount of TiO can be immediately generated2It is faint yellow that nanoparticle makes solution occur.Now, this mixed solution is reacted under hydrothermal conditions and can generate Detitanium-ore-type TiO at wood surface2Crystal.The crystal grain size generated is relatively big, covers after wood surface, and water droplet contact angle can improve to 100 ~ 130 °.Silane coupler is added in this mixed solution, titanium salt hydrolyzate is made to be combined with silane coupler, surface self-organization low-surface energy substance hydrophobic group, it is observed that solution becomes again clarification, hydrophobic group is introduced by silane coupler in titanium salt hydrolytic process, and Ti/Si composite hydrolysis monomer prevents Detitanium-ore-type TiO2The generation of crystal, now, the benzoyl peroxide of introducing promotes the polymerization of compound monomer structure, forms micro-nano composite film eventually through hydro-thermal reaction and covers at wood surface.Timber after alkali process, in participating in hydrothermal reaction process, provides catalysis, gathering, the template of film forming for this film layer so that wood surface covering is uniformly.Jointly being acted on low-surface energy substance by nanocrystailine microstructures, create super-hydrophobic effect, the super-hydrophobic timber water droplet contact angle of preparation reaches 153 °, and roll angle is less than 5 °.
The invention have the benefit that the super-hydrophobic timber preparation method of the present invention has the advantages that step is simple, reaction condition is easily achieved, and can be with large area reaction preparation, it is not necessary to follow-up low-surface energy substance is modified, easy control of reaction conditions, cost is relatively low, cleanliness without any pollution.The super-hydrophobic timber of preparation in the present invention, while having super-hydrophobicity, the best ageing-resistant performance, its key component is the oxide of titanium, silicon, and silicon has good chemical inertness, remains to maintain superhydrophobic characteristic under acid or alkali environment, and high temperature resistant；Titanyl compound has photocatalytic activity, adds the weatherability of timber.
Accompanying drawing explanation
Fig. 1 is the stereoscan photograph (SEM) on the embodiment of the present invention 1 super-hydrophobic timber surface.
Fig. 2 is x-ray photoelectron energy spectrogram (EDS) on the embodiment of the present invention 1 super-hydrophobic timber surface.
Fig. 3 is Fourier's infrared conversion spectrum figure (FTIR) on the embodiment of the present invention 1 super-hydrophobic timber surface.
Fig. 4 is the X-ray diffractogram (XRD) on the embodiment of the present invention 1 super-hydrophobic timber surface.
Fig. 5 is the contact angle test figure of the embodiment of the present invention 1 super-hydrophobic timber.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with Figure of description and preferred embodiment, the present invention is made more comprehensively, describes meticulously, but protection scope of the present invention is not limited to embodiment in detail below.
Unless otherwise defined, the implication that all technical term used hereinafter is generally understood that with those skilled in the art is identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to limit the scope of the invention.
Unless otherwise specified, the various raw materials used in the present invention, reagent, instrument and equipment etc. all can be commercially available by market or can be prepared by existing method.
Embodiment
1
The super-hydrophobic timber of a kind of present invention, this wood surface is polyvinyl alcohol film layer, and polyvinyl alcohol film surface is coated with uniform TiO2/SiO2Nanocomposite films layer, TiO2/SiO2Nanostructured produces chemical bonding, TiO by hydroxyl effect with timber/polyvinyl alcohol composite surface2/SiO2Nanocomposite films layer contains uniform 10 ~ 50 μm level grooves and 50 ~ 100nm level projection, and self assembly has low-surface energy substance VTES, and the water droplet contact angle of super-hydrophobic timber reaches 152 °, and roll angle is less than 5 °.
The preparation method of the super-hydrophobic timber of the present embodiment, comprises the following steps:
(1) timber that sawing is good being soaked in 12h in the sodium hydroxide solution that mass fraction is 3%, use deionized water to clean 10min under Ultrasonic Conditions, the timber after then cleaning is placed under vacuum condition and is dried, is finally placed under indoor environment balance.
(2) preparation 10%PVA solution, by timber pickling in wherein, and makes it form uniform thin layer at wood surface with ultrasound wave dispersion, then by it under the conditions of 30 DEG C, is vacuum dried 2h.
(3) preparation solution A: by 5ml butyl titanate and 40ml dehydrated alcohol mix homogeneously；
Prepare B solution again: by 1ml concentrated nitric acid, 3ml deionized water and 40ml dehydrated alcohol mix homogeneously；
Then solution A and B solution are mixed, stir 30min under magnetic stirring.
(4) 5ml VTES and 0.1g benzoyl peroxide, again magnetic agitation 10min are added.Wherein butyl titanate, dehydrated alcohol, concentrated nitric acid, VTES and benzoyl peroxide concentration are analytical pure.Add the timber test specimen after step (2) processes after this mixed solution is transferred to hydrothermal reaction kettle, at 70 DEG C, carry out hydro-thermal reaction 12h.After having reacted, use deionized water to clean timber test specimen, be dried in being then placed on vacuum drying oven, i.e. obtain super-hydrophobic timber.
As it is shown in figure 1, use scanning electron microscope (SEM) to analyze the surface topography of super-hydrophobic timber, it was observed that micron order groove that prepared composite surface is evenly distributed and nanoscale projection, trench diameter is in 10 ~ 50 μm, and nanoscale protrusion diameter is at 50 ~ 100nm；Fig. 2 is x-ray photoelectron power spectrum (EDS) figure of super-hydrophobic timber, prove that C, O, Si, Ti these four element is contained on its surface, Fig. 3 is the infrared conversion spectrum of the Fourier (FTIR) on the present embodiment super-hydrophobic timber surface, Fig. 4 is the X-ray diffractogram (XRD) on the present embodiment super-hydrophobic timber surface, analyze its surface chemical composition and find that Ti-O, Si-O key is contained, wherein possibly together with-CH in surface3,-CH2CH3Deng hydrophobic group；Fig. 4 shows that it does not has crystalline material and produces, and micro-nano secondary structure acts on jointly with low-surface-energy group, creates super-hydrophobic effect, as it is shown in figure 5, use contact angle tester to record its static contact angle reach 152 °, and water droplet easily tumbles.
Embodiment
2
The super-hydrophobic timber of a kind of present invention, this wood surface is polyvinyl alcohol film layer, and polyvinyl alcohol film surface is coated with uniform TiO2/SiO2Nanocomposite films layer, TiO2/SiO2Nanostructured produces chemical bonding, TiO by hydroxyl effect with timber/polyvinyl alcohol composite surface2/SiO2Nanocomposite films layer contains uniform 30 ~ 70 μm level grooves and 20 ~ 50nm level projection, and self assembly has low-surface energy substance MTMS, and the water droplet contact angle of super-hydrophobic timber reaches 151 °, and roll angle is less than 5 °.
The preparation method of the super-hydrophobic timber of the present embodiment, comprises the following steps:
(1) timber that sawing is good being soaked in 14h in the sodium hydroxide solution that concentration is 8%, use deionized water to clean 15min under Ultrasonic Conditions, the timber after then cleaning is placed under vacuum condition and is dried, is finally placed under indoor environment balance.
(2) preparation 20%PVA solution, by timber pickling in wherein, and makes it form uniform thin layer at wood surface with ultrasound wave dispersion, then by it under the conditions of 60 DEG C, is vacuum dried 1h.
(3) preparation solution A: by 10ml butyl titanate and 40ml dehydrated alcohol mix homogeneously；
Prepare B solution again: by 2ml concentrated nitric acid, 5ml deionized water and 40ml dehydrated alcohol mix homogeneously；
Then solution A and B solution are mixed, stir 45min under magnetic stirring.
(4) add the timber test specimen after step (2) processes after this mixed solution is transferred to hydrothermal reaction kettle, now add 8ml MTMS and 0.2g benzoyl peroxide, at 100 DEG C, carry out hydro-thermal reaction 6h.Wherein butyl titanate, dehydrated alcohol, concentrated nitric acid, MTMS and benzoyl peroxide concentration are analytical pure.After having reacted, use deionized water to clean timber test specimen, be dried in being then placed on vacuum drying oven, i.e. obtain super-hydrophobic timber.
Scanning electron microscope (SEM) is used to analyze the surface topography of super-hydrophobic timber, it was observed that micron order groove that prepared composite surface is evenly distributed and nanoscale projection, trench diameter is in 30 ~ 70 μm, and nanoscale protrusion diameter is at 20 ~ 50nm；The test of x-ray photoelectron power spectrum (EDS) figure is used to prove that C, O, Si, Ti these four element is contained on its surface, the infrared conversion spectrum of Fourier (FTIR), X-ray diffraction (XRD) is analyzed its surface chemical composition and is found that Ti-O, Si-O key is contained on surface, and do not have crystalline material to produce, wherein possibly together with-CH3,-CH2CH3Deng hydrophobic group；Micro-nano secondary structure acts on jointly with low-surface-energy group, creates super-hydrophobic effect, uses contact angle tester to record its static contact angle and reaches 151 °, and water droplet easily tumbles.
Embodiment
3
The super-hydrophobic timber of a kind of present invention, this wood surface is polyvinyl alcohol film layer, and polyvinyl alcohol film surface is coated with uniform TiO2/SiO2Nanocomposite films layer, TiO2/SiO2Nanostructured produces chemical bonding, TiO by hydroxyl effect with timber/polyvinyl alcohol composite surface2/SiO2Nanocomposite films layer contains uniform 50 ~ 80 μm level grooves and 30 ~ 100nm level projection, and self assembly has low-surface energy substance hexadecyl, and the water droplet contact angle of super-hydrophobic timber reaches 153 °, and roll angle is less than 5 °.
The preparation method of the super-hydrophobic timber of the present embodiment, comprises the following steps:
(1) timber that sawing is good being soaked in 13h in the sodium hydroxide solution that concentration is 5%, use deionized water to clean 20min under Ultrasonic Conditions, the timber after then cleaning is placed under vacuum condition and is dried, is finally placed under indoor environment balance.
(2) preparation 15%PVA solution, by timber pickling in wherein, and makes it form uniform thin layer at wood surface with ultrasound wave dispersion, then by it under the conditions of 45 DEG C, is vacuum dried 1.5h.
(3) preparation solution A: by 15ml butyl titanate and 40ml dehydrated alcohol mix homogeneously；
Prepare B solution again: by 3ml concentrated nitric acid, 5ml deionized water and 40ml dehydrated alcohol mix homogeneously；
Then solution A and B solution are mixed, stir 60min under magnetic stirring.
(4) add 9ml hexadecyl and 0.5g benzoyl peroxide, again magnetic agitation 30min, add the timber test specimen after step (2) processes after above-mentioned mixed solution is transferred to hydrothermal reaction kettle, at 120 DEG C, carry out hydro-thermal reaction 4h.Wherein butyl titanate, dehydrated alcohol, concentrated nitric acid, hexadecyl and benzoyl peroxide concentration are analytical pure.After having reacted, use deionized water to clean timber test specimen, be dried in being then placed on vacuum drying oven, i.e. obtain super-hydrophobic timber.
Scanning electron microscope (SEM) is used to analyze the surface topography of super-hydrophobic timber, it was observed that micron order groove that prepared composite surface is evenly distributed and nanoscale projection, trench diameter is in 50 ~ 80 μm, and nanoscale protrusion diameter is at 30 ~ 100nm；The test of x-ray photoelectron power spectrum (EDS) figure is used to prove that C, O, Si, Ti these four element is contained on its surface, the infrared conversion spectrum of Fourier (FTIR), X-ray diffraction (XRD) is analyzed its surface chemical composition and is found that Ti-O, Si-O key is contained on surface, and do not have crystalline material to produce, wherein possibly together with-CH3,-CH2CH3Deng hydrophobic group；Micro-nano secondary structure acts on jointly with low-surface-energy group, creates super-hydrophobic effect, uses contact angle tester to record its static contact angle and reaches 153 °, and water droplet easily tumbles.
Claims (9)
1. the preparation method of a super-hydrophobic timber, it is characterised in that this super-hydrophobic timber surface is polyvinyl alcohol film layer, described polyvinyl alcohol film surface is coated with uniform TiO2/SiO2Nanocomposite films layer, TiO2/SiO2TiO in Nanocomposite films layer2/SiO2The composite surface that nanostructured is consisted of hydroxyl effect and timber and polyvinyl alcohol film layer produces chemical bonding, described TiO2/SiO2Nanocomposite films layer contains uniform micron order groove and nanoscale projection, and self assembly has low-surface energy substance, the water droplet contact angle of described super-hydrophobic timber to reach 150 °～153 °, and roll angle is less than 5 °；This preparation method comprises the following steps:
(1) timber that sawing is good is soaked in sodium hydroxide solution, uses deionized water to clean timber under Ultrasonic Conditions, then timber is vacuum dried；
(2) timber is soaked in poly-vinyl alcohol solution, and makes polyvinyl alcohol form uniform thin layer at wood surface with ultrasound wave dispersion, be then vacuum dried；
(3) configuration solution A: add 4 ~ 15 parts by volume titanium salts and be dissolved in dehydrated alcohol, stir；Configuration solution B: add 1 ~ 5 parts by volume acid, 3 ~ 8 parts by volume deionized waters, and be dissolved in dehydrated alcohol, stir；Then solution A is mixed with solution B, be uniformly mixing to obtain mixed liquor；Above-mentioned mixed liquor is transferred to hydro-thermal reaction container, adds 4 ~ 9 parts by volume silane couplers and 0.1 ~ 0.5 weight portion benzoyl peroxide, stir；
The unit ratio corresponding relation of described weight portion and parts by volume is g/ml；
(4) in hydro-thermal reaction container, the timber after step (2) processes is added, or the timber after step (2) being processed before adding silane coupler and benzoyl peroxide puts in above-mentioned mixed liquor, carry out hydro-thermal reaction, clean timber after having reacted and be dried.
Preparation method the most according to claim 1, it is characterised in that the size of described micron order groove is 10 ~ 80 μm, the size of described nanoscale projection is 20 ~ 100nm.
Preparation method the most according to claim 1, it is characterised in that described low-surface energy substance is silane coupler.
Preparation method the most according to claim 3, it is characterised in that described silane coupler is any one in VTES, MTMS and hexadecyl.
Preparation method the most according to claim 1, it is characterised in that described titanium salt is titanium tetrachloride or butyl titanate；Acid is concentrated nitric acid；Silane coupler is any one in VTES, MTMS and hexadecyl；Wherein butyl titanate, concentrated nitric acid, dehydrated alcohol, silane coupler, benzoyl peroxide concentration are analytical pure, and the mass fraction of described concentrated nitric acid is 65% ~ 68%.
Preparation method the most according to claim 1, it is characterised in that the mass fraction of described sodium hydroxide solution is 3 ~ 8%, the time soaked in described step (1) is 12 ~ 14h, uses deionized water to clean 10 ~ 20min under Ultrasonic Conditions.
7. according to the preparation method according to any one of claim 1 ~ 6, it is characterised in that the mass fraction of described poly-vinyl alcohol solution is 10 ~ 20%, in described step (2), vacuum drying temperature is 30 ~ 60 DEG C, and the time is 1 ~ 3h.
8., according to the preparation method described in any one of claim 1 ~ 6, it is characterised in that described solution A stirs 30 ~ 60min after mixing with solution B, after adding silane coupler and benzoyl peroxide, stir 10 ~ 30min.
9. according to the arbitrary described preparation method of claim 1 ~ 6, it is characterised in that described hydrothermal reaction condition is: react 4 ~ 12h under conditions of temperature is 70 ~ 120 DEG C；Described hydro-thermal reaction uses deionized water to clean timber after completing.
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| CN104924379B (en) * | 2015-05-20 | 2017-05-10 | 中南林业科技大学 | Super-hydrophobic wood and preparation method thereof |
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| CN110205019A (en) * | 2019-04-18 | 2019-09-06 | 厦门建霖健康家居股份有限公司 | The preparation of micro-nano decorating liquid and super-hydrophobic surface coating |
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