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A kind of anti-electromagnetic radiation protective film and preparation method thereof

An anti-electromagnetic radiation, protective film technology, applied in the direction of film/sheet adhesive, adhesive type, polyurea/polyurethane adhesive, etc. Ideal and other issues, to achieve the effect of improving conductivity, enhancing anti-electromagnetic radiation effect, and good anti-electromagnetic wave radiation effect

Active Publication Date: 2015-09-02
NALI OPTICAL MATERIAL DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the low-radiation coating composition can block ultraviolet rays to a certain extent, its main function is heat insulation, and the amount of silicone resin in the composition is large, and the anti-electromagnetic wave radiation effect is not ideal.

Method used

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  • A kind of anti-electromagnetic radiation protective film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method for an anti-electromagnetic radiation protective film, comprising the following processing steps:

[0038] Step 1: Preparation of light-cured coating with anti-electromagnetic radiation function

[0039] A. Using multi-walled / single-walled carbon nanotubes, use 40 times the mass of concentrated nitric acid to heat and reflux in a boiling state. The heating temperature is 150°C. Purify and surface activate the carbon nanotubes. The reaction time is 5h, and then filter and use Washing with deionized water to obtain the treated carbon nanotubes;

[0040] B. Mix the treated carbon nanotubes and aniline under acidic conditions to form a prepolymer. The acidic conditions are to adjust the pH to 1 with HCl, and the mass ratio of carbon nanotubes to aniline is 1:50, and then add dropwise (NH 4 ) 2 S 2 o 8 undergoes oxidative polymerization, (NH 4 ) 2 S 2 o 8 The molar ratio to aniline is 1:1, and the carbon nanotube-polyaniline composite material is o...

Embodiment 2

[0049] The difference between this embodiment and Example 1 is: in this embodiment, step one, C, described light-cured coating also includes the graded nano-silver powder that is 1% by weight, and the graded nano-silver powder includes 200nm silver powder and The mass ratio of 30nm silver powder, 200nm silver powder and 30nm silver powder is 1:7.

[0050] The carbon nanotube-polyaniline composite material and graded nano-silver powder are dispersed into the acrylic polyurethane resin through high-speed stirring and ultrasonic dispersion equipment, and centrifugally filtered to obtain a photocurable coating with anti-electromagnetic wave effect. The carbon nanotube-polyaniline composite material accounts for The weight percentage of the light-cured coating is 3%, the weight percentage of the graded nano-silver powder accounts for the light-cured coating is 1%, and the weight percentage of the acrylic polyurethane resin accounts for the light-cured coating is 96%.

[0051] The r...

Embodiment 3

[0053] A preparation method for an anti-electromagnetic radiation protective film, comprising the following processing steps:

[0054] Step 1: Preparation of light-cured coating with anti-electromagnetic radiation function

[0055] A. Using multi-walled / single-walled carbon nanotubes, use 50 times the mass of concentrated nitric acid to heat and reflux in a boiling state. The heating temperature is 160°C. Purify and surface activate the carbon nanotubes. The reaction time is 4.5h, and then filter and washed with deionized water to obtain the treated carbon nanotubes;

[0056] B. Mix the treated carbon nanotubes and aniline under acidic conditions to form a prepolymer. The acidic conditions are to adjust the pH to 1 with HCl, and the mass ratio of carbon nanotubes to aniline is 1:60, and then add dropwise (NH 4 ) 2 S 2 o 8 undergoes oxidative polymerization, (NH 4 ) 2 S 2 o 8 The molar ratio to aniline is 1:1, and the carbon nanotube-polyaniline composite material is ob...

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Abstract

The invention relates to the technical field of optical protection films, and especially relates to an electromagnetic-radiation-resistant protection film and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing light-cure paint with electromagnetic radiation resistant function; step 2, coating a PET base material with the light-cured paint by using a slight-concave roller, and controlling the coating thickness of the light-cured paint to be 3-10 mu m, the diameter of the slight-concave roller to be 30-50 mm and the line screen of the slight-concave roller to be 40-400; step 3, curing the paint to obtain a film; and step 4, preparing the electromagnetic-radiation-resistant protection film. The electromagnetic-radiation-resistant protection film is good in electromagnetic-radiation-resistant effect, the technology is simple and manure and beneficial for popularization and application. When the electromagnetic-radiation-resistant protection film is used, the electromagnetic-radiation-resistant protection film can be attached to a handset or a display screen by tearing a PET protection film. Compared with electromagnetic-radiation-resistant equipment at home and abroad, such as radiation-proof clothes, electromagnetic-wave protection helmets and the like, the electromagnetic-radiation-resistant protection film is simple and convenient to use and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of optical protective films, in particular to an anti-electromagnetic radiation protective film and a preparation method thereof. Background technique [0002] At present, mobile communication has become one of the symbols of modern society. It not only enables people to maintain communication with the outside world anytime and anywhere, but also can access the Internet through mobile phones, which has brought great benefits to people's daily life and work. convenient. But at the same time, the electromagnetic radiation of mobile communication has also become one of the pollution that endangers people's health. In order to prevent the frontal radiation of mobile devices, many protective film manufacturers have begun to develop protective films with anti-electromagnetic radiation. [0003] The invention patent with Chinese patent application number 201310167462.8 discloses a low-emissivity coating compositi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J183/04C09J133/12C09J175/04C08J7/04C09D175/14C09D7/12C09J7/20
CPCC09D175/14C09J133/12C09J175/04C09J7/20
Inventor 陈克勇朱文峰杨忠芝齐东东
Owner NALI OPTICAL MATERIAL DONGGUAN
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