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Glass antifogging agent and preparation method thereof

A technology of anti-fogging agent and glass, which is applied in the field of glass anti-fogging agent and its preparation, glass anti-fogging agent containing modified polysilazane and its preparation field, which can solve the troublesome preparation method, high energy consumption, limited application, etc. problem, to achieve the effect of simple use method, simple preparation method, and poor durability

Active Publication Date: 2021-07-20
718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the preparation methods of the anti-fog coatings disclosed in the above two patents all need to be cured by light curing or combination of light and heat. high power consumption, the larger limits its application

Method used

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  • Glass antifogging agent and preparation method thereof
  • Glass antifogging agent and preparation method thereof
  • Glass antifogging agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) 5g modified polysilazane is mixed with 10g solvent to obtain liquid A; the solvent is composed of n-hexane, butyl propionate and n-butyl ether, and the mass ratio of n-hexane, butyl propionate and n-butyl ether It is 4:3:3.

[0054] (2) Mix and dissolve 1.4g sodium dodecylbenzenesulfonate and 1.4g NP-10 in 85g deionized water to form a surfactant aqueous solution; take 1g of fixative and 10g of dispersant and mix evenly and add to the surfactant aqueous solution , mix evenly to obtain liquid B.

[0055] Wherein, the fixing agent is composed of hydroxypropyl methylcellulose and polyvinyl alcohol, and the mass ratio of hydroxypropyl methylcellulose and polyvinyl alcohol is 1:1; the dispersant is methanol.

[0056] (3) Mix liquid A and liquid B uniformly at a mass ratio of 1:2 to form a mixed solution, and adjust the pH of the mixed solution to 7.1 with sodium hydroxide to obtain the glass antifogging agent of this embodiment.

Embodiment 2

[0058] (1) Mix 8 g of modified polysilazane with 10 g of solvent to obtain liquid A; the solvent is composed of butyl acetate and n-heptane, and the mass ratio of butyl acetate and n-heptane is 2:3.

[0059] (2) Mix 1.8g sodium dodecylbenzenesulfonate and 1g NP-10 and dissolve in 100g deionized water to form a surfactant aqueous solution; take 2g of fixative and 20g of dispersant and mix evenly and add it to the surfactant aqueous solution , and mix evenly to obtain liquid B.

[0060] Wherein, the fixing agent is composed of carboxymethyl cellulose and sodium alginate, and the mass ratio of carboxymethyl cellulose and sodium alginate is 2:1; the dispersant is isopropanol.

[0061] (3) Liquid A and liquid B were uniformly mixed at a mass ratio of 1:4 to form a mixed solution, and the pH of the mixed solution was adjusted to 8.1 with sodium hydroxide to obtain the glass antifogging agent of this embodiment.

Embodiment 3

[0063] (1) Mix 25g of modified polysilazane with 25g of solvent to obtain liquid A; the solvent is composed of n-hexane and amyl acetate, and the mass ratio of n-hexane and amyl acetate is 4:1.

[0064] (2) 1g sodium dodecylbenzenesulfonate and 5g NP-10 are mixed and dissolved in 150g deionized water to form an aqueous surfactant solution; 2g fixing agent is mixed with 10g dispersant and added to the aqueous surfactant solution, Mix well to obtain liquid B.

[0065] Wherein, the fixing agent is hydroxypropyl methylcellulose; the dispersing agent is ethanol.

[0066] (3) Mix liquid A and liquid B uniformly at a mass ratio of 1:6 to form a mixed solution, and adjust the pH of the mixed solution to 8.0 with sodium hydroxide to obtain the glass antifogging agent of this embodiment.

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Abstract

The invention relates to a glass antifogging agent and a preparation method thereof, and belongs to the technical field of preparation of glass antifogging agents. The antifogging agent comprises a liquid A and a liquid B, wherein the mass ratio of the solution A to the solution B is (1:2)-(1:6), and the pH value of the antifogging agent is 6-9; wherein the liquid A is prepared from the following components in parts by mass: 5 to 25 parts of modified polysilazane and 10 to 50 parts of solvent; the liquid B is prepared from the following components in parts by mass: 1-10 parts of sodium dodecyl benzene sulfonate, 1-10 parts of nonylphenol polyoxyethylene ether, 10-50 parts of a dispersing agent, 1-10 parts of a fixing agent and 80-200 parts of water. The method includes steps of: uniformly mixing the solution A and the solution B to form a mixed solution to prepare the antifogging agent, wherein if the pH value of the mixed solution is not 6-9, adjusting the pH value of the mixed solution by using a pH regulator to obtain the antifogging agent disclosed by the invention. The antifogging agent is good in antifogging effect and durability; during use, a coating can be formed only through normal-temperature curing.

Description

technical field [0001] The invention relates to a glass antifogging agent and a preparation method thereof, in particular to a glass antifogging agent containing modified polysilazane and a preparation method thereof, belonging to the technical field of glass antifogging agent preparation. Background technique [0002] When the water vapor in the air is cold, it will condense on the glass surface, forming a large number of small water droplets. The small water droplets will scatter the light passing through the glass, resulting in blurred vision. Glass anti-fogging agent can reduce the phenomenon of fogging on the glass surface. The main principle is that the glass anti-fogging agent acts on the glass surface, which can change the degree of wetting of the glass and water, thereby improving the phenomenon of fogging on the glass surface. Currently commercially available glass anti-fogging agents are mainly hydrophilic, that is, condensed fog droplets form a uniform water film...

Claims

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Application Information

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IPC IPC(8): C09K3/18
CPCC09K3/18
Inventor 商轶石晶刘保锋李献强郝文静刘波涛谭凯锋李占强杨品陈培红
Owner 718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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