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A kind of preparation method of color-changing anti-fog film

An anti-fog film and photochromic technology, applied in the field of material chemistry, can solve the problems of few and single functions, and achieve the effect of anti-fog balance, uniform molecular composition and high copolymerization activity

Active Publication Date: 2016-06-08
CHENGDU MOKA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these films have a single function, only anti-fog or discoloration, and rarely both

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: A preparation method of a color-changing anti-fog film, which comprises the following steps:

[0014] (1) Introduce nitrogen gas into the reactor at a rate of 20L / h for 60 minutes to exhaust the air. At the same time, add methyl methacrylate, β-hydroxyethyl acrylate, and ethyl acrylate into the reactor, stir evenly, and pour into the reactor Add methacrylic acid and acrylic acid dropwise to the kettle at a rate of 60mL / h, and raise the temperature of the reactor to 68°C. After reacting for 5 hours, add ammonium persulfate and react for 3 hours to obtain an acrylic resin;

[0015] (2) Lower the temperature to 55°C, add ammonia water to the acrylic resin, adjust the pH to 8.2, add an ethanol solution of N-methylolacrylamide and sodium dodecylbenzenesulfonate to form a liquid crystal solution, in which ethanol 45% by weight of the acrylic resin;

[0016] (3) Add photochromic pigment to the liquid crystal solution, stir evenly, apply on the surface of a clean g...

Embodiment 2

[0019] Example 2: A preparation method of a color-changing anti-fog film, which comprises the following steps:

[0020] (1) Introduce nitrogen gas into the reactor at a rate of 30L / h for 30 minutes to exhaust the air. At the same time, add methyl methacrylate, β-hydroxyethyl acrylate, and ethyl acrylate into the reactor, stir evenly, and pour into the reactor Add methacrylic acid and acrylic acid dropwise to the kettle at a rate of 80mL / h, and raise the temperature of the reactor to 75°C. After reacting for 6 hours, add ammonium persulfate and react for 4 hours to obtain an acrylic resin;

[0021] (2) Lower the temperature to 65°C, add ammonia water to the acrylic resin, adjust the pH to 8.6, add an ethanol solution of N-methylolacrylamide and sodium dodecylbenzenesulfonate to form a liquid crystal solution, in which ethanol 55% by weight of the acrylic resin;

[0022] (3) Add photochromic pigment to the liquid crystal solution, stir evenly, apply on the surface of a clean ...

Embodiment 3

[0025] Example 3: A preparation method of a color-changing anti-fog film, which comprises the following steps:

[0026] (1) Introduce nitrogen gas into the reactor at a rate of 23 L / h for 50 minutes to exhaust the air. At the same time, add methyl methacrylate, β-hydroxyethyl acrylate, and ethyl acrylate into the reactor, stir evenly, and pour into the reactor Add methacrylic acid and acrylic acid dropwise to the kettle at a rate of 68mL / h, and raise the temperature of the reactor to 70°C. After reacting for 5.5 hours, add ammonium persulfate and react for 3.5 hours to obtain an acrylic resin;

[0027] (2) Lower the temperature to 58°C, add ammonia water to the acrylic resin, adjust the pH to 8.3, add an ethanol solution of N-methylolacrylamide and sodium dodecylbenzenesulfonate to form a liquid crystal solution, in which ethanol The weight of the acrylic resin is 49%;

[0028] (3) Add photochromic pigment to the liquid crystal solution, stir evenly, apply on the surface of...

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PUM

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Abstract

The invention discloses a preparation method of a color-changing anti-fog film, which belongs to the field of material chemistry, and comprises the following steps: (1) feeding nitrogen to empty the air, and simultaneously injecting methyl methacrylate, β-hydroxyethyl acrylate, ethyl acrylate Add the ester to the reaction kettle, stir evenly, add methacrylic acid and acrylic acid dropwise, heat up and react for a period of time, add ammonium persulfate, and react to obtain acrylic resin; (2) cool down, add ammonia water, adjust pH, add N-methylolacrylamide ethanol solution and sodium dodecylbenzenesulfonate to form a liquid crystal solution; (3) Add photochromic pigment, stir evenly, apply on the surface of a clean glass sheet, bake and cool to obtain a color-changing anti-fog film. The invention has the functions of discoloration and anti-fog, and has the characteristics of not being easy to fatigue and having a long effect.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a preparation method of a color-changing anti-fog film. Background technique [0002] In daily life, various substrates such as glasses and car window glass remain unchanged when the light intensity changes, which can easily cause people's visual fatigue and cause danger. In addition, in daily life, such as glasses, car window glass, bathroom mirrors, building interior and exterior window glass, agricultural greenhouses and other substrates, fogging often occurs in places with high temperature difference or high humidity difference, which affects the use in life and production. , and even cause a large loss of manpower and material resources. For example, when wearing glasses in winter and entering a higher temperature room from a lower temperature outdoor, a layer of fog will inevitably be produced on the lens, which will affect normal actions; Fog affects the dri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L33/02C08F220/06C08F220/14C08F220/18C08F220/28C09K9/02
Inventor 陈泽勇汤毅郑凤财
Owner CHENGDU MOKA TECH