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Antifogging agent, preparation method and application thereof

An anti-fogging agent and surfactant technology, applied in the field of anti-fogging agent and its preparation, can solve the problems of inconvenience of goggles, loss of anti-fogging effect, unsuitable for use in epidemic areas, etc., so as to improve the anti-fogging effect and satisfy the Performance requirements, the effect of improving transparency

Pending Publication Date: 2021-12-21
NANJING UNIV OF SCI & TECH
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Although the initial anti-fog effect and transparency of domestic goggles are good, the anti-fog effect after washing with water is not as good as before. After washing more than ten times, the anti-fog effect is completely lost. The eyepieces are inconvenient and not suitable for use in epidemic areas

Method used

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  • Antifogging agent, preparation method and application thereof
  • Antifogging agent, preparation method and application thereof
  • Antifogging agent, preparation method and application thereof

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preparation example Construction

[0024] The preparation method of antifogging agent of the present invention and test method thereof are as follows:

[0025] (1) Concentrate preparation: mix surfactant, titanium dioxide, polyvinyl alcohol, tartaric acid, potassium tetraborate, and glycerin according to the corresponding ratio;

[0026] (2) Dilute the concentrated solution: dilute the concentrated solution with deionized water to 35 ml of aqueous solutions with concentrations of 0.01%, 0.05%, and 0.1%.

[0027] (3) Adjusting the pH value: the above solution was adjusted to pH = 10 with sodium hydroxide, and stirred at an ambient temperature of 20° C. for 30 minutes.

[0028] (4) Smear and measure the contact angle: Spin-coat the prepared solution onto a glass sheet with a coater, place the glass sheet with an anti-fog coating on the surface in an oven at 45°C for 2 hours, and measure it with a contact angle meter Contact angle.

Embodiment 1

[0029] Embodiment 1: concentrate, according to the formula in Table 1, surfactant, titanium dioxide, polyvinyl alcohol, tartaric acid, potassium tetraborate, glycerin are mixed according to the corresponding proportion. The concentrated solution was diluted with deionized water to 35 ml of an aqueous solution with a concentration of 0.01%, 0.05%, and 0.1%. The above solution was adjusted to pH=10 with sodium hydroxide and stirred at ambient temperature of 20° C. for 30 minutes. Spin-coat the prepared solution onto a glass sheet with a coater, place the glass sheet with an anti-fog coating on the surface in an oven at 45°C for 2 hours, and then measure the contact angle with a contact angle meter. The results are shown in figure 1 .

Embodiment 2

[0030] Embodiment 2: concentrate, according to the formula in Table 1, surfactant, titanium dioxide, polyvinyl alcohol, tartaric acid, potassium tetraborate, glycerin are mixed according to the corresponding proportion. The concentrated solution was diluted with deionized water to 35 ml of an aqueous solution with a concentration of 0.01%, 0.05%, and 0.1%. The above solution was adjusted to pH=10 with sodium hydroxide and stirred at ambient temperature of 20° C. for 30 minutes. Spin-coat the prepared solution onto a glass sheet with a coater, place the glass sheet with an anti-fog coating on the surface in an oven at 45°C for 2 hours, and then measure the contact angle with a contact angle meter. The results are shown in figure 2 .

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Abstract

The invention discloses an antifogging agent, a preparation method and application thereof, and belongs to the technical field of high polymer materials. The antifogging agent comprises 20-30% of a surfactant, 2.5-5% of titanium dioxide, 15-21% of polyvinyl alcohol, 10-18% of tartaric acid, 23-30% of potassium tetraborate and 9.5-16% of glycerin, wherein the pH value of the antifogging agent is 10. According to the invention, the production cost is reduced, the product storage period is long, the transportation is convenient, and the anti-fogging agent has the characteristics of good transparency and good anti-fogging effect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an antifogging agent and its preparation method and application. Background technique [0002] Anti-fogging agent is a low molecular weight dispersant containing hydrophilic groups, which is composed of molecules with a certain molecular weight. The mechanism of action of anti-fogging agent is to use the special molecular structure of polyol type non-ionic surface activity, one part is hydrophilic group, the other part is lipophilic group, and the hydrophilic group absorbs water molecules in the air and makes the surface tension Reduce, thereby reducing the contact angle between water molecules and the surface of transparent objects, so that water molecules will wet and diffuse on the surface of transparent objects before forming tiny water droplets on the surface of transparent objects, forming an ultra-thin transparent water film , no longer scatter the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18
CPCC09K3/18
Inventor 周吕叶飞虹黄歆然黄诗雨史文静
Owner NANJING UNIV OF SCI & TECH
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