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A kind of anti-reflection and anti-fog coating material for optical bopet film and preparation method thereof

An anti-fog coating and optical technology, applied in the direction of coating, etc., can solve the problems of adverse effects on the optical properties of thin films, hinder the development of optical films, etc., and achieve the effect of high adhesion

Active Publication Date: 2019-02-19
ANHUI MINGXUN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the traditional BOPET production process, it is necessary to add a micron-sized anti-blocking agent to prevent the film from sticking after winding, but at the same time, the micron-sized anti-blocking agent will have an adverse effect on the optical properties of the film, which seriously hinders The development of my country's optical film industry

Method used

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  • A kind of anti-reflection and anti-fog coating material for optical bopet film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 3.00kg SiO2 2 nanoparticles and dispersed in water to form a silica dispersion with a concentration of 5 wt%. Add 0.05 kg of silane coupling agent KH-570 to the silica dispersion system, start stirring at 70°C, and react for 30 minutes.

[0029] A mixture of 3.70 kg of acrylic acid, 1.89 kg of methacrylic acid, 0.58 kg of ethylene glycol dimethacrylate, 0.58 kg of trimethylolpropane triacrylate and 0.58 kg of pentaerythritol tetraacrylate was added dropwise to the above system while stirring. Solution, at the same time dropwise added the aqueous solution that dissolved 0.06 kg potassium persulfate, and controlled the dropping time at 1.5h.

[0030] After the dropwise addition, continue to stir, heat, keep warm in a sealed reaction device (70±2°C) for 8 hours, cool and discharge to obtain an anti-reflection and anti-fog coating solution.

[0031] Dilute the above coating solution to a solution with a concentration of 10wt% with a diluent having a volume ratio of ...

Embodiment 2

[0034] Change the ratio of monomers, add 2.64 kg of acrylic acid and 3.15 kg of methacrylic acid, other raw materials and reaction conditions are the same as in Example 1. An optical BOPET film with anti-reflection and anti-fog effects is obtained.

Embodiment 3

[0036] Change the ratio of monomers, add 1.59 kg of acrylic acid and 4.41 kg of methacrylic acid, other raw materials and reaction conditions are the same as in Example 1, and obtain an optical BOPET film with anti-reflection and anti-fog effects.

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Abstract

The invention discloses a transmittance-increasing anti-haze coating material for an optical BOPET film. The coating material is prepared from reaction monomers, inorganic nanoparticles, a silane coupling agent and an initiating agent, wherein the reaction monomers are composed of acrylic acid, methacrylic acid, ethylene glycol dimethacrylate, trimethylolpropane triacrylate and pentaerythritol tetraacrylate. The total light transmittance of the optical BOPET film coated with the coating material is larger than or equal to 96%, and the haze of the optical BOPET film is smaller than or equal to 1%; compared with a BOPET base film, the light transmittance is increased by nearly 7%, and the haze is slightly decreased; no VOC is emitted in the coating drying process, and thus environmental friendliness is achieved; meanwhile, a coating has large adhesive force to the BOPET base film.

Description

technical field [0001] The invention relates to the field of polymer coating materials, in particular to an anti-reflection and anti-fog coating material for optical BOPET films and a preparation method thereof. Background technique [0002] Biaxially oriented polyester film, namely BOPET film, is not only widely used in packaging, printing, window film and other fields due to its excellent insulation, mechanical properties, heat resistance and certain light transmission. It is also used as an optical film in the field of liquid crystal displays. [0003] Optical films not only require the film to have the above properties, but also require the film to have very high light transmittance and low haze. [0004] In the traditional BOPET production process, it is necessary to add a micron-sized anti-blocking agent to prevent the film from sticking after winding, but at the same time, the micron-sized anti-blocking agent will have an adverse effect on the optical properties of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/02C09D7/61C08J7/04C08F220/06C08F222/14C08L67/02
CPCC08F220/06C08J7/0427C08J2367/02C08J2433/02C08K3/36C08K9/06C08K2201/011C09D7/61C09D133/02C08F222/102C08F222/103C08F222/104
Inventor 白杨白永平孟令辉李卫东席丹殷晓芬
Owner ANHUI MINGXUN NEW MATERIAL TECH
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