CN105924017A - Method for preparing film coating solution from modified nano-silicon dioxide - Google Patents

Method for preparing film coating solution from modified nano-silicon dioxide Download PDF

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CN105924017A
CN105924017A CN201610484375.9A CN201610484375A CN105924017A CN 105924017 A CN105924017 A CN 105924017A CN 201610484375 A CN201610484375 A CN 201610484375A CN 105924017 A CN105924017 A CN 105924017A
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nano
silicon dioxide
beaker
film coating
phytic acid
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陈建峰
薛培龙
王统军
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/006Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • C03C17/007Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/006Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • C03C17/008Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
    • C03C17/009Mixtures of organic and inorganic materials, e.g. ormosils and ormocers
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C03C17/23Oxides
    • C03C17/25Oxides by deposition from the liquid phase
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/30Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00Coatings on glass
    • C03C2217/40Coatings comprising at least one inhomogeneous layer
    • C03C2217/43Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
    • C03C2217/44Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the composition of the continuous phase
    • C03C2217/445Organic continuous phases
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00Coatings on glass
    • C03C2217/40Coatings comprising at least one inhomogeneous layer
    • C03C2217/43Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
    • C03C2217/46Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase
    • C03C2217/47Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase consisting of a specific material
    • C03C2217/475Inorganic materials
    • C03C2217/478Silica
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00Coatings on glass
    • C03C2217/70Properties of coatings
    • C03C2217/73Anti-reflective coatings with specific characteristics
    • C03C2217/732Anti-reflective coatings with specific characteristics made of a single layer
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00Methods for coating glass
    • C03C2218/10Deposition methods
    • C03C2218/11Deposition methods from solutions or suspensions
    • C03C2218/112Deposition methods from solutions or suspensions by spraying
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00Methods for coating glass
    • C03C2218/30Aspects of methods for coating glass not covered above
    • C03C2218/32After-treatment

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

The invention relates to a method for preparing a film coating solution from modified nano-silicon dioxide, and belongs to the technical field of the preparation of film coating solutions. According to the method for preparing the film coating solution from the modified nano-silicon dioxide, phytic acid is first extracted and obtained from wheat bran powder; afterwards, nano-silicon dioxide sol is mixed with an ethanol solution to obtain a nano-sized silica sol-ethanol solution; the surfaces of nano-silicon dioxide are modified by utilizing a silane coupling agent KH-550; the polarities of the surfaces of the silica sol are weakened; the dispersity is improved; substances of modified silica sol powder, the phytic acid and the like are mixed to prepare and obtain the film coating solution. According to the method, the oxidation resistance and the weather resistance of the film coating solution can be improved by utilizing the phytic acid; the film coating solution prepared and obtained from the nano-silicon dioxide modified by using the silane coupling agent KH-550 is high in light transmittance and good in stability, and is difficult to settle and aggregate; the light transmittance of the film coating solution is enabled to be up to 97 percent or above; the weather resistance is increased by 17 to 25 percent; moreover, preparation steps are simple; the cost is low.

Description

A kind of modified manometer silicon dioxide prepares the method for coating liquid
Technical field
The present invention relates to a kind of method that modified manometer silicon dioxide prepares coating liquid, belong to coating liquid preparing technical field.
Background technology
In recent years, along with exploitation and the application of the various instruments such as large screen display, solar thermal collector photovoltaic cell component, the research to glass antireflective effect is increasingly subject to people's attention.And the one simple effective method making glass anti-reflection is exactly plated film on glass.According to optical principle, at the thin film that glass substrate surface plating last layer refractive index is less, the light transmission of substrate can be made to be improved.The surface protection glass of such as solar energy heating hydrophone, photovoltaic component packaging glass, if improving its light transmission by this method, be conducive to improving photothermal conversion efficiency and electricity conversion.
Coated solution of the prior art, carry out physical mixed with film forming matter, other adjuvants obtain by Ludox, titanium colloidal sol isosol class material, so that in this kind of coated solution, Ludox, bond strength between titanium colloidal sol isosol class material and film forming matter are more weak.Owing to the particle surface in Ludox, titanium colloidal sol isosol class material exists the substantial amounts of hydroxyl with reactivity, the coated solution that these molten gelatin substances obtain with film forming matter, other adjuvant physical mixed, the most heavy poly-, stability is bad.And after glass surface film forming, film hardness, adhesive force and rub resistance are the most poor, and prepared packaging glass of solar cell film layer under ageing environment easily comes off, and illustrates that the weather resistance of existing packaging glass of solar cell is bad, and the anti-reflection function of film layer is caused to lose efficacy.And, packaging glass of solar cell of the prior art, although be coated with anti-reflection film, but the anti-reflection rate of its anti-reflection film mostly is less than 2.5%, so that the light transmittance of packaging glass of solar cell of the prior art is relatively low.
Summary of the invention
nullThe technical problem to be solved: for minimum with the nano silicone aerosol particle size in coated solution,Surface also exists substantial amounts of various oh group,In polarity,Hydrophilic is strong,Make it the most heavy poly-,Stability is bad,And light transmittance is low,The problem of weatherability difference,Provide one and first from wheat bran powder, extract to obtain phytic acid,Again nano silicon dioxide sol and ethanol solution are mixed to get nano silicone colloidal sol-ethanol solution,Utilize silane resin acceptor kh-550 that nano-silica surface is modified,Reduce the polarity on silicon dioxide gel surface,Dispersibility is made to be improved,The materials such as modified Ludox powder and phytic acid are mixed with to obtain the method for coating liquid,The method utilizes phytic acid can improve non-oxidizability and the weatherability of coating liquid,The coating liquid light transmittance prepared with the nano silicon that silane resin acceptor kh-550 is modified is high,Good stability,It is difficult to heavy poly-.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
(1) 100~200g Testa Tritici are weighed, pulverized, sieve to obtain 70~80 mesh wheat bran powders, by solid-to-liquid ratio 1:5, wheat bran powder is mixed with mass fraction 25% acetic acid, 5~7h are extracted at 60~65 DEG C, it is centrifuged after extraction separating under rotating speed 7000~8000r/min, collect supernatant is phytic acid crude extract, the phytic acid crude extract ultrafilter membrane of 45~60kDa is filtered, collect permeate, will transmit through liquid and be heated to 80~85 DEG C, centrifugation after insulation 20~30min, remove precipitate, supernatant is spray-dried, i.e. can get phytic acid, standby;
(2) measure 8~10mL particle diameters and load in beaker less than 40nm nano silicon dioxide sol, 80~100mL mass fraction 95% ethanol solution are added in beaker, put in sonic oscillation instrument after Glass rod stirring mixing 5~10min, sonic oscillation 20~30min under 120~150W power, obtains nano silicone colloidal sol-ethanol solution;
(3) the 20~25% of above-mentioned nano silicone colloidal sol-volumes of aqueous ethanol are measured in beaker, it is 4.0~4.5 with glacial acetic acid regulation pH value, regulate and backward solution adds mixed liquor gross mass 8~10% silane resin acceptor kh-550 in beaker, after magnetic agitation 15~20min, above-mentioned residue 75~80% nano silicone colloidal sol-ethanol solution is dripped while stirring in beaker, put into after completion of dropwise addition in water-bath and be heated with stirring to backflow, it is cooled to room temperature after back flow reaction 3~5h, with centrifugation under 5000~7000r/min rotating speeds after normal propyl alcohol washing reaction liquid 3~5 times, obtain precipitate, and put into the baking oven of 45~50 DEG C to be dried to moisture and volatilize completely, obtain modified silicasol powder;
(4) the above-mentioned modified silicasol powder that is prepared into is mixed with water by solid-liquid 1:2, it is 4.5~5.5 with mass fraction 37% vinegar acid for adjusting pH, obtain mixed solution, count by weight, choose 10~15 parts of mixed solutions respectively, 2~4 parts of polyurethane resins, the phytic acid that 0.6~0.8 part of step (1) is standby, 0.1~0.3 part of alkyl modified silicon oil, 0.05~0.08 part of emulsified silicone oil, 5~8 parts of dehydrated alcohol, obtain coating liquid after 100~120 parts of water mix homogeneously.
The application process of the present invention: first the glass of required plated film is carried out, until glass surface is dustless, after soft flocks, again it is dried, then the glass surface after using the mode of spraying to be sprayed into drying the coating liquid of above-mentioned preparation, coating thickness is 0.1~0.2mm, after end to be sprayed, it is carried out hot pressing, controlling hot pressing temperature is 60~80 DEG C, hot pressing 15~25min, and standing is cooled to room temperature, scrape the water between pad pasting and glass is slowly scraped with film again, strike off, until bubble-free, after folding line, place, pack.After testing, coated glass light transmittance reaches more than 97%.
The present invention is compared with additive method, and Advantageous Effects is:
(1) coating liquid prepared by the present invention utilizes phytic acid can improve non-oxidizability and the weatherability of coating liquid, and weatherability improves 17~25%;
(2) nano silicon that the present invention utilizes silane resin acceptor kh-550 modified prepares coating liquid light transmittance height, good stability, is difficult to heavy poly-, and light transmittance reaches more than 97%;
(3) preparation process of the present invention is simple, required low cost.
Detailed description of the invention
First 100~200g Testa Tritici are weighed, pulverized, sieve to obtain 70~80 mesh wheat bran powders, by solid-to-liquid ratio 1:5, wheat bran powder is mixed with mass fraction 25% acetic acid, 5~7h are extracted at 60~65 DEG C, it is centrifuged after extraction separating under rotating speed 7000~8000r/min, collect supernatant is phytic acid crude extract, the phytic acid crude extract ultrafilter membrane of 45~60kDa is filtered, collect permeate, will transmit through liquid and be heated to 80~85 DEG C, centrifugation after insulation 20~30min, remove precipitate, supernatant is spray-dried, i.e. can get phytic acid, standby;Measure 8~10mL particle diameters again and load in beaker less than 40nm nano silicon dioxide sol, 80~100mL mass fraction 95% ethanol solution are added in beaker, put in sonic oscillation instrument after Glass rod stirring mixing 5~10min, sonic oscillation 20~30min under 120~150W power, obtains nano silicone colloidal sol-ethanol solution;Then the 20~25% of above-mentioned nano silicone colloidal sol-volumes of aqueous ethanol are measured in beaker, it is 4.0~4.5 with glacial acetic acid regulation pH value, regulate and backward solution adds mixed liquor gross mass 8~10% silane resin acceptor kh-550 in beaker, after magnetic agitation 15~20min, above-mentioned residue 75~80% nano silicone colloidal sol-ethanol solution is dripped while stirring in beaker, put into after completion of dropwise addition in water-bath and be heated with stirring to backflow, it is cooled to room temperature after back flow reaction 3~5h, with centrifugation under 5000~7000r/min rotating speeds after normal propyl alcohol washing reaction liquid 3~5 times, obtain precipitate, and put into the baking oven of 45~50 DEG C to be dried to moisture and volatilize completely, obtain modified silicasol powder;Finally the above-mentioned modified silicasol powder that is prepared into is mixed with water by solid-liquid 1:2, it is 4.5~5.5 with mass fraction 37% vinegar acid for adjusting pH, obtain mixed solution, count by weight, choose 10~15 parts of mixed solutions respectively, 2~4 parts of polyurethane resins, 0.6~0.8 part of standby phytic acid, 0.1~0.3 part of alkyl modified silicon oil, 0.05~0.08 part of emulsified silicone oil, 5~8 parts of dehydrated alcohol, obtain coating liquid after 100~120 parts of water mix homogeneously.
Example 1
First 200g Testa Tritici is weighed, pulverized, sieve to obtain 80 mesh wheat bran powders, by solid-to-liquid ratio 1:5, wheat bran powder is mixed with mass fraction 25% acetic acid, 7h is extracted at 65 DEG C, it is centrifuged after extraction separating under rotating speed 8000r/min, collect supernatant is phytic acid crude extract, the ultrafilter membrane of phytic acid crude extract 60kDa is filtered, collect permeate, will transmit through liquid and be heated to 85 DEG C, centrifugation after insulation 30min, removes precipitate, is spray-dried by supernatant, i.e. can get phytic acid, standby;Measure 10mL particle diameter 38nm nano silicon dioxide sol again and load in beaker, 100mL mass fraction 95% ethanol solution is added in beaker, put in sonic oscillation instrument after Glass rod stirring mixing 10min, sonic oscillation 30min under 150W power, obtain nano silicone colloidal sol-ethanol solution;Then the 25% of above-mentioned nano silicone colloidal sol-volumes of aqueous ethanol is measured in beaker, it is 4.5 with glacial acetic acid regulation pH value, regulate and backward solution adds mixed liquor gross mass 10% silane resin acceptor kh-550 in beaker, after magnetic agitation 20min, above-mentioned residue 75% nano silicone colloidal sol-ethanol solution is dripped while stirring in beaker, put into after completion of dropwise addition in water-bath and be heated with stirring to backflow, room temperature it is cooled to after back flow reaction 5h, with centrifugation under 7000r/min rotating speed after normal propyl alcohol washing reaction liquid 5 times, obtain precipitate, and put into the baking oven of 50 DEG C to be dried to moisture and volatilize completely, obtain modified silicasol powder;Finally the above-mentioned modified silicasol powder that is prepared into is mixed with water by solid-liquid 1:2, it is 5.5 with mass fraction 37% vinegar acid for adjusting pH, obtain mixed solution, count by weight, choose 15 parts of mixed solutions respectively, 4 parts of polyurethane resins, 0.8 part of standby phytic acid, 0.3 part of alkyl modified silicon oil, 0.08 part of emulsified silicone oil, 8 parts of dehydrated alcohol, obtain coating liquid after 120 parts of water mix homogeneously.
First the glass of required plated film is carried out, until glass surface is dustless, after soft flocks, drying it, the glass surface after then using the mode of spraying to be sprayed into drying the coating liquid of above-mentioned preparation, coating thickness is 0.2mm again, after end to be sprayed, it being carried out hot pressing, controlling hot pressing temperature is 80 DEG C, hot pressing 25min, and stand and be cooled to room temperature, then scrape the water between pad pasting and glass is slowly scraped with film, strike off, until bubble-free, after folding line, place, pack.After testing, coated glass light transmittance reaches 98%, and light transmittance is good.
Example 2
First 100g Testa Tritici is weighed, pulverized, sieve to obtain 70 mesh wheat bran powders, by solid-to-liquid ratio 1:5, wheat bran powder is mixed with mass fraction 25% acetic acid, 5h is extracted at 60 DEG C, it is centrifuged after extraction separating under rotating speed 7000r/min, collect supernatant is phytic acid crude extract, the ultrafilter membrane of phytic acid crude extract 45kDa is filtered, collect permeate, will transmit through liquid and be heated to 80 DEG C, centrifugation after insulation 20min, removes precipitate, is spray-dried by supernatant, i.e. can get phytic acid, standby;Measure 8mL particle diameter 39nm nano silicon dioxide sol again and load in beaker, 80mL mass fraction 95% ethanol solution is added in beaker, put in sonic oscillation instrument after Glass rod stirring mixing 5min, sonic oscillation 20min under 120W power, obtain nano silicone colloidal sol-ethanol solution;Then the 20% of above-mentioned nano silicone colloidal sol-volumes of aqueous ethanol is measured in beaker, it is 4.0 with glacial acetic acid regulation pH value, regulate and backward solution adds mixed liquor gross mass 8% silane resin acceptor kh-550 in beaker, after magnetic agitation 15min, above-mentioned residue 80% nano silicone colloidal sol-ethanol solution is dripped while stirring in beaker, put into after completion of dropwise addition in water-bath and be heated with stirring to backflow, room temperature it is cooled to after back flow reaction 3h, with centrifugation under 5000r/min rotating speed after normal propyl alcohol washing reaction liquid 3 times, obtain precipitate, and put into the baking oven of 45 DEG C to be dried to moisture and volatilize completely, obtain modified silicasol powder;Finally the above-mentioned modified silicasol powder that is prepared into is mixed with water by solid-liquid 1:2, it is 4.5 with mass fraction 37% vinegar acid for adjusting pH, obtain mixed solution, count by weight, choose 10 parts of mixed solutions respectively, 2 parts of polyurethane resins, 0.6 part of standby phytic acid, 0.1 part of alkyl modified silicon oil, 0.05 part of emulsified silicone oil, 5 parts of dehydrated alcohol, obtain coating liquid after 100 parts of water mix homogeneously.
First the glass of required plated film is carried out, until glass surface is dustless, after soft flocks, drying it, the glass surface after then using the mode of spraying to be sprayed into drying the coating liquid of above-mentioned preparation, coating thickness is 0.1mm again, after end to be sprayed, it being carried out hot pressing, controlling hot pressing temperature is 60 DEG C, hot pressing 20min, and stand and be cooled to room temperature, then scrape the water between pad pasting and glass is slowly scraped with film, strike off, until bubble-free, after folding line, place, pack.After testing, coated glass light transmittance reaches 97.5%, and light transmittance is good.
Example 3
First 150g Testa Tritici is weighed, pulverized, sieve to obtain 75 mesh wheat bran powders, by solid-to-liquid ratio 1:5, wheat bran powder is mixed with mass fraction 25% acetic acid, 6h is extracted at 62 DEG C, it is centrifuged after extraction separating under rotating speed 7500r/min, collect supernatant is phytic acid crude extract, the ultrafilter membrane of phytic acid crude extract 50kDa is filtered, collect permeate, will transmit through liquid and be heated to 82 DEG C, centrifugation after insulation 25min, removes precipitate, is spray-dried by supernatant, i.e. can get phytic acid, standby;Measure 9mL particle diameter again and load in beaker less than 38nm nano silicon dioxide sol, 90mL mass fraction 95% ethanol solution is added in beaker, put in sonic oscillation instrument after Glass rod stirring mixing 6min, sonic oscillation 25min under 130W power, obtain nano silicone colloidal sol-ethanol solution;Then the 23% of above-mentioned nano silicone colloidal sol-volumes of aqueous ethanol is measured in beaker, it is 4.2 with glacial acetic acid regulation pH value, regulate and backward solution adds mixed liquor gross mass 9% silane resin acceptor kh-550 in beaker, after magnetic agitation 17min, above-mentioned residue 77% nano silicone colloidal sol-ethanol solution is dripped while stirring in beaker, put into after completion of dropwise addition in water-bath and be heated with stirring to backflow, room temperature it is cooled to after back flow reaction 4h, with centrifugation under 6000r/min rotating speed after normal propyl alcohol washing reaction liquid 4 times, obtain precipitate, and put into the baking oven of 47 DEG C to be dried to moisture and volatilize completely, obtain modified silicasol powder;Finally the above-mentioned modified silicasol powder that is prepared into is mixed with water by solid-liquid 1:2, it is 4.7 with mass fraction 37% vinegar acid for adjusting pH, obtain mixed solution, count by weight, choose 12 parts of mixed solutions respectively, 3 parts of polyurethane resins, 0.7 part of standby phytic acid, 0.2 part of alkyl modified silicon oil, 0.06 part of emulsified silicone oil, 6 parts of dehydrated alcohol, obtain coating liquid after 110 parts of water mix homogeneously.
First the glass of required plated film is carried out, until glass surface is dustless, after soft flocks, drying it, the glass surface after then using the mode of spraying to be sprayed into drying the coating liquid of above-mentioned preparation, coating thickness is 0.15mm again, after end to be sprayed, it being carried out hot pressing, controlling hot pressing temperature is 70 DEG C, hot pressing 20min, and stand and be cooled to room temperature, then scrape the water between pad pasting and glass is slowly scraped with film, strike off, until bubble-free, after folding line, place, pack.After testing, coated glass light transmittance reaches 98.2%, and light transmittance is good.

Claims (1)

1. the method that a modified manometer silicon dioxide prepares coating liquid, it is characterised in that concrete preparation process is:
(1) 100~200g Testa Tritici are weighed, pulverized, sieve to obtain 70~80 mesh wheat bran powders, by solid-to-liquid ratio 1:5, wheat bran powder is mixed with mass fraction 25% acetic acid, 5~7h are extracted at 60~65 DEG C, it is centrifuged after extraction separating under rotating speed 7000~8000r/min, collect supernatant is phytic acid crude extract, the phytic acid crude extract ultrafilter membrane of 45~60kDa is filtered, collect permeate, will transmit through liquid and be heated to 80~85 DEG C, centrifugation after insulation 20~30min, remove precipitate, supernatant is spray-dried, i.e. can get phytic acid, standby;
(2) measure 8~10mL particle diameters and load in beaker less than 40nm nano silicon dioxide sol, 80~100mL mass fraction 95% ethanol solution are added in beaker, put in sonic oscillation instrument after Glass rod stirring mixing 5~10min, sonic oscillation 20~30min under 120~150W power, obtains nano silicone colloidal sol-ethanol solution;
(3) the 20~25% of above-mentioned nano silicone colloidal sol-volumes of aqueous ethanol are measured in beaker, it is 4.0~4.5 with glacial acetic acid regulation pH value, regulate and backward solution adds mixed liquor gross mass 8~10% silane resin acceptor kh-550 in beaker, after magnetic agitation 15~20min, above-mentioned residue 75~80% nano silicone colloidal sol-ethanol solution is dripped while stirring in beaker, put into after completion of dropwise addition in water-bath and be heated with stirring to backflow, it is cooled to room temperature after back flow reaction 3~5h, with centrifugation under 5000~7000r/min rotating speeds after normal propyl alcohol washing reaction liquid 3~5 times, obtain precipitate, and put into the baking oven of 45~50 DEG C to be dried to moisture and volatilize completely, obtain modified silicasol powder;
(4) the above-mentioned modified silicasol powder that is prepared into is mixed with water by solid-liquid 1:2, it is 4.5~5.5 with mass fraction 37% vinegar acid for adjusting pH, obtain mixed solution, count by weight, choose 10~15 parts of mixed solutions respectively, 2~4 parts of polyurethane resins, the phytic acid that 0.6~0.8 part of step (1) is standby, 0.1~0.3 part of alkyl modified silicon oil, 0.05~0.08 part of emulsified silicone oil, 5~8 parts of dehydrated alcohol, obtain coating liquid after 100~120 parts of water mix homogeneously.
CN201610484375.9A 2016-06-28 2016-06-28 Method for preparing film coating solution from modified nano-silicon dioxide Withdrawn CN105924017A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110845872A (en) * 2019-10-29 2020-02-28 东南大学 Surface modification method of high-dispersion nano silicon dioxide
CN114506176A (en) * 2022-02-21 2022-05-17 万禾隆(厦门)家居用品有限公司 Method for making novel sculpture handicraft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110845872A (en) * 2019-10-29 2020-02-28 东南大学 Surface modification method of high-dispersion nano silicon dioxide
CN114506176A (en) * 2022-02-21 2022-05-17 万禾隆(厦门)家居用品有限公司 Method for making novel sculpture handicraft

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Application publication date: 20160907