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Novel optical anti-fog film and preparation method thereof

An anti-fog film and optical technology, applied in the field of material chemistry, can solve the problems of unsatisfactory anti-fog effect of transparent materials, and achieve the effect of strong light transmittance and good adhesion

Inactive Publication Date: 2011-12-07
中南大学肝胆肠外科研究中心 +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0008] Aiming at the unsatisfactory anti-fog effect of the transparent material prepared by the prior art, the present invention provides a technology in which the anion and cation film layers are firmly attached to the transparent substrate after being separately coated, and this method can avoid the adhesion of ordinary coating films. poor technical problems

Method used

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  • Novel optical anti-fog film and preparation method thereof
  • Novel optical anti-fog film and preparation method thereof
  • Novel optical anti-fog film and preparation method thereof

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Experimental program
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Embodiment Construction

[0032] Reagents and Instruments

[0033] Cationic polyacrylamide (CPAM, solid content: ≥90%, molecular weight 1000-1200, China),

[0034] Acrylic (PAA, 99.9%, China)

[0035] Sodium silicate (SSI, NaO 2 %>24.0, SiO 2 >53.0, China).

[0036] The solvent is double distilled water (self-made).

[0037] The oven adopts the 601-2 type oven from Dalian Fourth Instrument Factory.

[0038] The contact angle test adopts Drop shape Analysis system DSA20 contact angle tester.

[0039] The light transmittance was measured using a Japanese Hitachi U-2001 ultraviolet spectrophotometer.

[0040] Step 1: Paint Preparation

[0041] Add water-diluted sodium silicate solution with a density of 1.0mg / mL to the cationic polyacrylamide solution dropwise, and stir evenly. The volume ratio of the two solutions is 125mL: 12.5mL. The water temperature is controlled below 60°C, and the pH value of the mixture is adjusted to 4.0 with hydrochloric acid;

[0042] Step 2: Optical Substrate Processi...

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Abstract

The invention relates to the field of material chemistry, and mainly provides an optical anti-fogging film with firm adhesion and good anti-fogging effect, and a preparation method and application thereof. Alternately coating and drying in sodium solution. The invention has good adhesion, light transmittance and anti-fog performance.

Description

technical field [0001] The invention relates to the field of material chemistry, and mainly relates to a novel optical anti-fog film and a preparation method thereof. Background technique [0002] The anti-fog film can change the surface properties of the material, and its anti-fog principle is roughly divided into two categories: ①Hydrophilic anti-fog film: reduce the contact angle of the substrate surface to water (water contact angle θ<35°), so that water droplets The surface of the material spreads out and forms a uniform water film. In this way, light reflection and refraction caused by water droplets are avoided, and the light transmittance of the material is ensured. The hydrophilic anti-fog film has a long anti-fog time, many raw materials, and is easy to purchase. ② Hydrophobic anti-fog film: increase the contact angle of the substrate surface to water (water contact angle θ>100°), so that water droplets cannot be adsorbed on the surface of the material. Wh...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D4/06C09D7/12G02B1/10
Inventor 张阳德李坚刘佳一潘一峰赵劲风廖明媚
Owner 中南大学肝胆肠外科研究中心
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