CN110591555A - Preparation method of self-cleaning antifogging astronomical telescope lens - Google Patents
Preparation method of self-cleaning antifogging astronomical telescope lens Download PDFInfo
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- CN110591555A CN110591555A CN201910845690.3A CN201910845690A CN110591555A CN 110591555 A CN110591555 A CN 110591555A CN 201910845690 A CN201910845690 A CN 201910845690A CN 110591555 A CN110591555 A CN 110591555A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
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Abstract
The invention relates to a preparation method of a self-cleaning antifogging astronomical telescope lens, which is characterized in that nano-silica is doped with nano-titanium dioxide for the first time, and the nano-silica, the nano-titanium dioxide and nano-silver are used as main components to enable the coating to be self-cleaning and antifogging, so that the self-cleaning antifogging coating has good self-cleaning effect and lasting antifogging effect, and a coating film of the self-cleaning antifogging coating has an excellent antibacterial function. The prepared self-cleaning antifogging coating can form a thin and transparent protective film on the surface of glass, and the film has strong adhesive force, can quickly clean and volatilize quickly, and can treat a mirror surface without leaving traces. Meanwhile, the prepared lens also has the characteristics of excellent self-cleaning, antifogging, sterilizing, high transmittance and the like.
Description
Technical Field
The invention relates to the technical field of functional coatings, in particular to a preparation method of a self-cleaning anti-fog astronomical telescope lens.
Background
The problem of environmental pollution seriously affects the daily life of people, so that in the process of using the astronomical telescope outdoors, many astronomical amateurs have reduced transparency of the mirror surface because particles such as environmental pollutants, atmospheric dust and the like stop on the mirror surface, and aerial fog is easily formed on the surface of the mirror surface because of weather reasons, which seriously affects the beauty of the mirror surface of the astronomical telescope, increases the time and cost for maintaining and cleaning the mirror surface, and causes the waste of water resources in the cleaning process. According to statistics, all the current astronomical telescopes are basically puzzled by the problem of cleaning, and the observation of astronomical researchers is directly influenced. In the prior art, a transparent super-hydrophobic coating is coated on the surface of a glass mirror surface, so that a super-hydrophobic interface is rapidly formed between the coating surface of the glass mirror surface and dirt, the contact angle between the dirt and the surface of the glass mirror surface is larger than 150 degrees, the dirt slides along the surface of the glass mirror surface under the action of the gravity of the dirt, and meanwhile, the dirt on the surface of the glass mirror surface is taken away, so that the purpose of self-cleaning is achieved. However, the existing coating cannot solve the problem of aerial fog caused by weather reasons, and the aerial fog can be eliminated by using the demisting agent for many times, so that the operation is not only complicated, but also the time and the resources are wasted, and the cost is high.
Therefore, the development of the self-cleaning and anti-fog coating for the glass mirror surface and the lens, which have the advantages of good adhesion performance, self-cleaning, long anti-fog durability, good effect, simple experimental operation and low cost, is a technical problem to be solved in the field.
Disclosure of Invention
The invention aims to avoid the defects in the prior art and provide a self-cleaning anti-fog and degerming multifunctional coating film which has the advantages of good adhesion, lasting effect and the like.
The purpose of the invention is realized by the following technical scheme:
a preparation method of a self-cleaning antifogging astronomical telescope lens comprises the following steps:
(1) step 1, stirring and mixing 6-13 parts of sodium citrate, 6-9 parts of dilute hydrochloric acid, 9-25 parts of nano silicon dioxide and 14 ~ 16 parts of isopropanol until a fine and uniform mixture A is formed;
(2) step 2, stirring and mixing 10-36 parts of nano-scale titanium dioxide, 5-12 parts of heptadecafluorodecyltriethoxysilane (FAS-17) and 14 ~ 16 parts of isopropanol until a fine and uniform mixture B is formed;
(3) and step 3: and (3) mixing the mixture A and the mixture B obtained in the steps 1 and 2, and adding 5-14 parts of nano silver until the mixture is uniformly mixed.
(4) Step 4, uniformly mixing 3% of hydrogen peroxide and 2mol/L of dilute hydrochloric acid according to a volume ratio of 1:1 to prepare a lens soaking mixed solution, placing the astronomical telescope lens into the mixed solution of 3% of hydrogen peroxide and 2mol/L of dilute hydrochloric acid, soaking for 0.8 ~ 1.5.5 hours, washing with deionized water and absolute ethyl alcohol, and drying for later use;
(5) and 5: spraying the coating prepared in the step 3 on the mirror surface treated in the step 4, and naturally airing;
(6) and 6, heating the naturally dried lens in an oven at 75 ~ 85 ℃ for 26 ~ 36 minutes to obtain the self-cleaning anti-fog lens, wherein the temperature is favorable for the coating to be completely crosslinked into a film, and the excessively high or excessively low temperature is not favorable for the film to be formed.
Preferably, in step 3, the lens sprayed with the mixture of a and B is naturally dried and then placed at 18 ~ 30 for 30 minutes, and then the operation of step 6 can be performed.
Preferably, in step 1, step 2 and step 3, the stirring time is 30 minutes.
Preferably, the particle size of the nano titanium dioxide is 2 ~ 8 nm.
Preferably, the particle size of the nano-silica is 2 ~ 8 nm.
The invention has the beneficial effects that:
the preparation method of the self-cleaning antifogging astronomical telescope lens uses the technical scheme that the nano silicon dioxide can reduce the contact angle of the surface of the coating film, so that water in the air is in contact with the nano silicon dioxideThe diffusion forms a water film, no scattering is generated, the fogging phenomenon is prevented, and the anti-fogging aging is increased; the nano silver has stronger disinfection and sterilization effects, and endows the glass mirror surface with good antibacterial effect; nano TiO 22As a self-cleaning coating, the photocatalytic action of titanium dioxide can degrade organic pollutants on the surface of a glass mirror surface, so that the self-cleaning effect is achieved. The sodium citrate can be used as an auxiliary agent of a nontoxic detergent in the invention, and the dilute hydrochloric acid can be helpful for catalyzing the functional component nano TiO2And silicon dioxide is fast and firmly attached to the mirror surface, and meanwhile, the low refractive index of the fluorosilane enables the substrate to play a role in preventing light reflection and assisting in reducing the contact angle of the surface of the coating film. The method has the advantages of simple operation, low cost, few raw material types, uniform and transparent coating, complete transparency in a visible light range and firm combination with the glass mirror surface.
The preparation method solves the problems of complex process, low glass light transmittance, low adhesion property, short duration, no antifogging and the like in the traditional preparation process of the self-cleaning glass, 3 percent of hydrogen peroxide has the capability of disinfection and sterilization, and 2mol/L of dilute hydrochloric acid can remove impurities on the surface of the glass and promote the film-forming adhesion of a coating film. The self-cleaning antifogging lens prepared by the invention has the advantages of environmental protection, antibiosis, self-cleaning, good antifogging durability, good adhesion property and the like:
(1) the self-cleaning antifogging coating film is not influenced by the environment, can change water mist accumulated on the mirror surface into water drops and take away pollutants at any time, and has the effect of cleaning the mirror surface.
(2) The coating film disclosed by the invention can prevent fog and self-clean at a proper critical hydrophobic angle, and has a good anti-fog self-cleaning effect.
(3) The coating and the carrier form a coating which is firmly adhered, uniform and compact, and the coating has excellent hydrophobic property, is transparent and has excellent antibacterial property.
Detailed Description
The invention is further illustrated by the following examples.
Example 1
The self-cleaning antifogging coating for the astronomical telescope mirror surface comprises the following steps:
(1) step 1: 6g of sodium citrate, 6g of diluted hydrochloric acid, 9g of nano silicon dioxide and 14g of isopropanol are stirred and mixed until a fine and uniform mixture A is formed;
(2) step 2: 10g of nano-sized titanium dioxide, 5g of heptadecafluorodecyltriethoxysilane (FAS-17) and 14g of isopropanol are stirred and mixed until a fine, homogeneous mixture B is formed.
(3) And step 3: mixing the mixture A and the mixture B in the steps 1 and 2, and adding 5g of nano silver until the mixture is uniformly mixed to obtain the self-cleaning antifogging coating;
(4) and 4, step 4: placing the astronomical telescope lens in a mixed solution of 3% hydrogen peroxide (volume concentration) and 2mol/L diluted hydrochloric acid, wherein the volume ratio of the hydrogen peroxide to the diluted hydrochloric acid is 1:1, soaking for 0.8 hour, washing with deionized water and absolute ethyl alcohol, and drying for later use;
(5) and 5: spraying the self-cleaning antifogging coating obtained in the step (3) on the lens treated in the step (4), and naturally airing for 20 minutes;
(6) step 6: and (3) heating the naturally dried lens in an oven at 75 ℃ for 26 minutes to obtain the self-cleaning antifogging lens.
Wherein the particle size of the nano titanium dioxide is 2nm, and the particle size of the nano silicon dioxide is 2 nm.
Example 2
The main technical solution of this embodiment is substantially the same as that of embodiment 1, and the features that are not explained in this embodiment adopt the explanations in embodiment 1, and are not described herein again. The present embodiment is different from embodiment 1 in that:
(1) step 1: 8g of sodium citrate, 7g of diluted hydrochloric acid, 16g of nano silicon dioxide and 15g of isopropanol;
(2) step 2: 23g of nano-scale titanium dioxide, 8g of heptadecafluorodecyltriethoxysilane (FAS-17) and 15g of isopropanol;
(3) and step 3: adding 9g of nano silver;
(4) and 4, step 4: soaking the mixture in the mixed solution of hydrogen peroxide and dilute hydrochloric acid for 1 hour;
(5) and 5: naturally airing for 18 minutes;
(6) step 6: the lenses were heat treated in an oven at 80 ℃ for 30 minutes.
Wherein the particle size of the nano titanium dioxide is 5nm, and the particle size of the nano silicon dioxide is 5 nm.
Example 3
The main technical solution of this embodiment is substantially the same as that of embodiment 1, and the features that are not explained in this embodiment adopt the explanations in embodiment 1, and are not described herein again. The present embodiment is different from embodiment 1 in that:
(1) step 1: 13g of sodium citrate, 9g of diluted hydrochloric acid, 25g of nano silicon dioxide and 16g of isopropanol;
(2) step 2: 36g of nanoscale titanium dioxide, 12g of heptadecafluorodecyltriethoxysilane (FAS-17) and 16g of isopropanol;
(3) and step 3: adding 14g of nano silver;
(4) and 4, step 4: soaking the mixture in the mixed solution of hydrogen peroxide and dilute hydrochloric acid for 1.5 hours;
(5) and 5: naturally airing for 30 minutes;
(6) step 6: the lenses were heat treated in an oven at 85 ℃ for 36 minutes.
Wherein the particle size of the nano titanium dioxide is 8nm, and the particle size of the nano silicon dioxide is 8 nm.
And (3) experimental test:
the astronomical telescope lens samples obtained in examples 1 to 3 were placed in a beaker sealed with water and then in the refrigerator compartment (temperature 3-6 deg.C)oC) Performing anti-fog aging treatment, wherein the inspection time points are 4 h, 8 h, 12 h, 24 h, 36 h, 48 h, 60 h, 72 h and 94 h respectively, and inspecting and recording the appearance change condition of the astronomical telescope in a refrigeration environment. The results of the performance tests of the self-cleaning anti-fog lenses prepared in examples 1 to 3 all reach the effects of table 1.
Table 1 self-cleaning anti-fog lens performance test results:
| time/h | Grade | Antifogging appearance effect |
| 4 | E | High transparency and no water drop on the film surface |
| 8 | E | High transparency and no water drop on the film surface |
| 12 | E | High transparency and no water drop on the film surface |
| 24 | E | High transparency and no water drop on the film surface |
| 36 | D/E | Good transparency, small amount of water drop on the film surface |
| 48 | D/E | Good transparency, small amount of water drop on the film surface |
| 60 | D | Part of water drops on the film surface |
| 72 | D | Part of water drops on the film surface |
| 94 | C | 70% of the membrane surface has water drops |
As can be seen from Table 1, the self-cleaning antifogging lens prepared by the invention has excellent antifogging effect, long duration and good mirror surface transparency, can clear water mist on glass, can form a thin protective film on the glass to prevent the formation of the water mist, and has the function of removing dirt on the glass mirror surface and the sterilization effect, so that the self-cleaning antifogging coating can ensure the transparent and demisting articles on the glass mirror surface and is suitable for various glass self-cleaning antifogging.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and do not limit the protection scope of the claims. It will be understood by those skilled in the art that various modifications and equivalents may be made to the embodiments of the present invention without departing from the spirit and scope of the invention.
Claims (5)
1. A preparation method of a self-cleaning antifogging astronomical telescope lens is characterized by comprising the following steps:
(1) step 1, stirring and mixing 6-13 parts of sodium citrate, 6-9 parts of dilute hydrochloric acid, 9-25 parts of nano silicon dioxide and 14 ~ 16 parts of isopropanol until a fine and uniform mixture A is formed;
(2) step 2, stirring and mixing 10-36 parts of nano-scale titanium dioxide, 5-12 parts of heptadecafluorodecyltriethoxysilane (FAS-17) and 14 ~ 16 parts of isopropanol until a fine and uniform mixture B is formed;
(3) and step 3: mixing the mixture A and the mixture B in the steps 1 and 2, and adding 5-14 parts of nano silver to be uniformly mixed;
(4) step 4, uniformly mixing 3% of hydrogen peroxide and 2mol/L of dilute hydrochloric acid according to a volume ratio of 1:1 to prepare a lens soaking mixed solution, placing the astronomical telescope lens into the mixed solution of 3% of hydrogen peroxide and 2mol/L of dilute hydrochloric acid, soaking for 0.8 ~ 1.5.5 hours, washing with deionized water and absolute ethyl alcohol, and drying for later use;
(5) and 5: spraying the coating prepared in the step 3 on the mirror surface treated in the step 4, and naturally airing;
(6) and 6, heating the naturally dried lens in an oven at 75 ~ 85 ℃ for 26 ~ 36 minutes to obtain the self-cleaning anti-fog lens.
2. The method for preparing the self-cleaning anti-fog astronomical telescope lens as claimed in claim 5, wherein in step 3, the lens sprayed with the mixture of A and B is naturally dried and then placed for 18 ~ 30 minutes, and then the operation of step 6 can be performed.
3. The method for preparing the self-cleaning anti-fog astronomical telescope lens according to claim 1, wherein the method comprises the following steps: in step 1, step 2 and step 3, the stirring time was 30 minutes.
4. The preparation method of the self-cleaning antifogging coating for the mirror surface of the astronomical telescope according to claim 1, which is characterized in that: the particle size of the nano titanium dioxide is 2-8 nm.
5. The preparation method of the self-cleaning antifogging coating for the mirror surface of the astronomical telescope according to claim 1, wherein the self-cleaning antifogging coating comprises the following steps: the particle size of the nano silicon dioxide is 2-8 nm.
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Cited By (5)
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| CN112552045A (en) * | 2020-12-28 | 2021-03-26 | 海宁拓材科技股份有限公司 | Low-valence zirconia optical coating material and preparation method thereof |
| CN113296168A (en) * | 2021-05-31 | 2021-08-24 | 卢晟 | Lens for shooting device, lens coating process and wiper |
| CN113933917A (en) * | 2021-11-22 | 2022-01-14 | 广西五行材料科技有限公司 | Nano material for dewatering and anti-fogging of glasses |
| WO2022016482A1 (en) * | 2020-07-24 | 2022-01-27 | Carl Zeiss Vision International Gmbh | Spectacle lens with antibacterial and/or antiviral properties and method for manufacturing the same |
| WO2022151879A1 (en) * | 2021-01-14 | 2022-07-21 | 深圳市聚荣科技有限公司 | Telescope and antibacterial lenses for telescope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022016482A1 (en) * | 2020-07-24 | 2022-01-27 | Carl Zeiss Vision International Gmbh | Spectacle lens with antibacterial and/or antiviral properties and method for manufacturing the same |
| CN112552045A (en) * | 2020-12-28 | 2021-03-26 | 海宁拓材科技股份有限公司 | Low-valence zirconia optical coating material and preparation method thereof |
| WO2022151879A1 (en) * | 2021-01-14 | 2022-07-21 | 深圳市聚荣科技有限公司 | Telescope and antibacterial lenses for telescope |
| CN113296168A (en) * | 2021-05-31 | 2021-08-24 | 卢晟 | Lens for shooting device, lens coating process and wiper |
| CN113933917A (en) * | 2021-11-22 | 2022-01-14 | 广西五行材料科技有限公司 | Nano material for dewatering and anti-fogging of glasses |
| CN113933917B (en) * | 2021-11-22 | 2023-02-28 | 广西五行材料科技有限公司 | Nano material for dewatering and anti-fogging of glasses |
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Application publication date: 20191220 |