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CN-122011820-A - Transparent antibacterial hydrophobic coating, transparent antibacterial hydrophobic lens with transparent antibacterial hydrophobic coating and preparation method of transparent antibacterial hydrophobic lens

CN122011820ACN 122011820 ACN122011820 ACN 122011820ACN-122011820-A

Abstract

The invention relates to the technical field of coatings, in particular to a transparent antibacterial hydrophobic coating, a transparent antibacterial hydrophobic lens with the transparent antibacterial hydrophobic coating and a preparation method of the transparent antibacterial hydrophobic lens. The transparent antibacterial hydrophobic coating comprises GO@SiO 2 /ZnO heterojunction nano-structure powder, and the preparation method of the GO@SiO 2 /ZnO heterojunction nano-structure powder comprises the steps of dispersing silane modified silica particles, hexamethylenetetramine, zinc nitrate and graphene oxide in an ethanol solution to form a reaction solution, carrying out microwave reaction on the reaction solution, filtering, washing, drying and grinding to obtain the GO@SiO 2 /ZnO heterojunction nano-structure powder. The GO/SiO 2 /ZnO is heterogeneous, has the synergy of hydrophobic and antibacterial properties, avoids functional mutual exclusion, gives consideration to high light transmittance, and is suitable for being used on lenses.

Inventors

  • WANG JIANJUN
  • ZHAN WEITING
  • SHEN BO

Assignees

  • 丹阳市佐川眼镜有限公司
  • 杭州佐川科技有限公司
  • 武汉科技大学

Dates

Publication Date
20260512
Application Date
20260226

Claims (10)

  1. 1. A transparent antibacterial hydrophobic coating is characterized by comprising GO@SiO 2 /ZnO heterojunction nano-structure powder, and the preparation method of the GO@SiO 2 /ZnO heterojunction nano-structure powder comprises the steps of dispersing silane modified silica particles, hexamethylenetetramine, zinc nitrate and graphene oxide in an ethanol solution to form a reaction solution, carrying out microwave reaction on the reaction solution, filtering, washing, drying and grinding to obtain the GO@SiO 2 /ZnO heterojunction nano-structure powder.
  2. 2. A transparent antimicrobial hydrophobic coating according to claim 1, wherein the molar ratio of hexamethylenetetramine to zinc nitrate is 1:1.
  3. 3. A transparent antimicrobial hydrophobic coating according to claim 1, wherein the mass ratio of silane modified silica particles, zinc nitrate, graphene oxide is (10-100): 1-10): 1.
  4. 4. The transparent antibacterial hydrophobic coating of claim 1, wherein the concentration of graphene oxide in the reaction solution is 0.01-5 g/L, the length of graphene oxide is 20-200 nm, and the thickness is 1-5 nm.
  5. 5. A transparent antimicrobial hydrophobic lens comprising a lens and a transparent antimicrobial hydrophobic coating as claimed in any one of claims 1 to 4 applied thereto.
  6. 6. The transparent antimicrobial hydrophobic lens of claim 5 wherein said lens is an epoxy material.
  7. 7. A method of preparing a transparent antimicrobial hydrophobic lens according to claim 5 or 6, comprising the steps of: S1, semi-solidifying and shaping an epoxy substrate, namely mixing epoxy resin and polyether amine in a molar ratio of epoxy equivalent to amine hydrogen equivalent of 1:1, stirring and mixing at constant temperature in a closed container, adding an organic phosphate auxiliary agent into the mixed system for fully mixing, pouring the mixed solution into a horizontally placed culture dish or a mold after vacuum defoaming, and semi-solidifying and shaping; s2, dispersing the GO@SiO 2 /ZnO heterojunction nano-structure powder in ethanol according to any one of claims 1-4, performing ultrasonic dispersion to obtain transparent spraying slurry, uniformly spraying the slurry on the surface of the semi-cured epoxy layer in the step S1, drying and curing the sprayed base material to form a transparent antibacterial hydrophobic coating, and finally obtaining the transparent antibacterial hydrophobic lens.
  8. 8. The method according to claim 7, wherein in the step S1, the liquid surface thickness poured into a horizontally placed culture dish or mold is controlled to be 1-2 mm, and the sizing time is 30-45min after semi-curing at 40-60 ℃.
  9. 9. The preparation method of claim 7, wherein the total thickness of the transparent antibacterial hydrophobic coating is 5-8 μm, and the concentration of the GO@SiO 2 /ZnO heterojunction nano-structure powder in the slurry is 1-10g/L.
  10. 10. The preparation method of the epoxy resin foam plastic, according to claim 7, wherein the organic phosphate auxiliary agent is one of triethyl phosphate, tributyl phosphate, dimethyl methylphosphonate and diphenyl isooctyl phosphate, the mass ratio of the epoxy resin to the organic phosphate auxiliary agent is 2-5:1, the airtight constant-temperature stirring temperature is 55-65 ℃, the stirring time is 60-90min, the vacuum degree of vacuum defoaming is-0.08-0.1 MPa, and the defoaming time is 20-30min.

Description

Transparent antibacterial hydrophobic coating, transparent antibacterial hydrophobic lens with transparent antibacterial hydrophobic coating and preparation method of transparent antibacterial hydrophobic lens Technical Field The invention relates to the technical field of coatings, in particular to a transparent antibacterial hydrophobic coating, a transparent antibacterial hydrophobic lens with the transparent antibacterial hydrophobic coating and a preparation method of the transparent antibacterial hydrophobic lens. Background The optical lens is used as a core basic component, and the functional requirement of the optical lens is upgraded from single light transmission to light transmission, antifouling and antibacterial multifunctional integration. In the practical use process of the lens, the light transmission effect is easily affected by water stain, greasy dirt and dust in the environment, meanwhile, pathogenic bacteria such as staphylococcus aureus, escherichia coli and the like are easily bred on the surface of the lens, cross infection is easily caused in the fields of medical instruments and medical protection articles, the human health is endangered, and in the fields of consumer electronics and daily necessities, the service life of the lens is also shortened and the use experience is affected by bacterial breeding. At present, the prior art mainly prepares the antibacterial hydrophobic lens by a coating modification method, but has the technical defects that firstly, the interfacial binding force between an epoxy substrate and a functional coating is poor, the coating is easy to fall off, the abrasion resistance is insufficient, the function is fast attenuated after long-term use, secondly, nano SiO 2 is easy to agglomerate to form large particles due to higher surface energy, the hydrophobic modifier cannot be uniformly covered, the hydrophobic modification of SiO 2 is insufficient, the light transmittance of the lens is poor, thirdly, the safety and the high efficiency of antibacterial components are high, such as the potential danger of heavy metal toxicity exists when the antibacterial component Ag is added, the light transmittance is reduced due to excessive antibacterial components, and fourthly, the coating modification is mainly performed by adopting a vacuum sputtering mode and the like, so that the process is complex and the equipment cost is high. In order to solve the problems, developing a transparent antibacterial hydrophobic lens which realizes strong interface combination through substrate system optimization, high performance of functional powder through modification process parameter optimization and function coordination through chemical bond energy regulation is a technical problem to be solved in the industry. Disclosure of Invention The invention aims at providing a transparent antibacterial hydrophobic coating, a transparent antibacterial hydrophobic lens with the transparent antibacterial hydrophobic coating and a preparation method of the transparent antibacterial hydrophobic lens. The invention provides a transparent antibacterial hydrophobic coating, which comprises GO@SiO 2/ZnO heterojunction nano-structure powder, wherein the preparation method of the GO@SiO 2/ZnO heterojunction nano-structure powder comprises the steps of dispersing silane modified silica particles, hexamethylenetetramine, zinc nitrate and graphene oxide in an ethanol solution to form a reaction solution, carrying out microwave reaction on the reaction solution, filtering, washing, drying and grinding to obtain the GO@SiO 2/ZnO heterojunction nano-structure powder. Further, the molar ratio of hexamethylenetetramine to zinc nitrate was 1:1. Further, the mass ratio of the silane modified silicon dioxide particles, the zinc nitrate and the graphene oxide is (10-100): 1-10): 1. Further, in the reaction solution, the concentration of the graphene oxide is 0.01-5 g/L, the length of the graphene oxide is 20-200 nm, and the thickness of the graphene oxide is 1-5 nm. A second object of the present invention is to provide a transparent antimicrobial hydrophobic lens comprising a lens and a transparent antimicrobial hydrophobic coating as described above applied thereon. Further, the lens is made of epoxy resin. The third object of the present invention is to provide a method for preparing the transparent antibacterial hydrophobic lens, comprising the following steps: S1, semi-solidifying and shaping an epoxy substrate, namely mixing epoxy resin and polyether amine in a molar ratio of epoxy equivalent to amine hydrogen equivalent of 1:1, stirring and mixing at constant temperature in a closed container, adding an organic phosphate auxiliary agent into the mixed system for fully mixing, pouring the mixed solution into a horizontally placed culture dish or a mold after vacuum defoaming, and semi-solidifying and shaping; S2, dispersing the GO@SiO 2/ZnO heterojunction nano-structure powder in ethanol, perform