Preparation method of PET silver film

A silver film and silver powder technology, applied in the field of reflective materials, to prevent delamination, excellent corrosion resistance, and general corrosion resistance.

Pending Publication Date: 2022-08-09
深圳市西陆光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of PET silver film to solve the problems encountered in actual use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the embodiment of the present invention, a preparation method of PET silver film includes the following preparation steps:

[0025] Step 1: Antioxidant treatment of silver powder

[0026] Chemical reduction: add 300 parts of pure water into the reaction vessel, add 50 parts of silver nitrate under stirring conditions to make it completely dissolved; then use 60 parts of pure water to dissolve 15 parts of sodium hydroxide to prepare an aqueous sodium hydroxide solution; Add dropwise sodium hydroxide aqueous solution to the silver nitrate aqueous solution, after the dropwise addition is completed; immediately dropwise add 15 parts of formaldehyde solution to carry out chemical reaction for 1 hour, wash the silver powder;

[0027] Weigh 5 parts of the above-mentioned silver powder, add 30 parts of zirconia with a diameter of Φ5mm and load it into a ball mill tank, add 7.5 parts of absolute ethanol as a ball milling solvent, add 0.05 part of oleic acid as an auxiliary ag...

Embodiment 2

[0039] A preparation method of PET silver film, comprising the following preparation steps:

[0040] Step 1: Antioxidant treatment of silver powder

[0041] Chemical reduction: add 200 parts of pure water to the reaction vessel, add 40 parts of silver nitrate under stirring conditions to make it completely dissolved; then use 50 parts of pure water to dissolve 10 parts of sodium hydroxide to prepare an aqueous sodium hydroxide solution; Add dropwise sodium hydroxide aqueous solution to the silver nitrate aqueous solution, after the dropwise addition is completed; immediately dropwise add 10 parts of formaldehyde solution to carry out chemical reaction for 1 hour, wash the silver powder;

[0042] Weigh 3 parts of above-mentioned silver powder, add 25 parts of zirconia with a diameter of Φ5mm and put it in the ball mill tank, add 5 parts of absolute ethanol as a ball milling solvent, add 0.05 part of oleic acid as an auxiliary agent, set the rotating speed of 320rpm for ball mil...

Embodiment 3

[0053] A preparation method of PET silver film, comprising the following preparation steps:

[0054] Step 1: Antioxidant treatment of silver powder

[0055] Chemical reduction: add 400 parts of pure water into the reaction vessel, add 60 parts of silver nitrate under stirring conditions to dissolve it completely; then use 70 parts of pure water to dissolve 20 parts of sodium hydroxide to prepare an aqueous sodium hydroxide solution; Add dropwise sodium hydroxide aqueous solution to the silver nitrate aqueous solution, after the dropwise addition is completed; immediately dropwise add 20 parts of formaldehyde solution to carry out chemical reaction for 1 hour, wash the silver powder;

[0056] Weigh 7 parts of above-mentioned silver powder, add 35 parts of zirconia with a diameter of Φ5mm and put it in the ball mill tank, add 10 parts of absolute ethanol as a ball milling solvent, add 0.05 part of oleic acid as an auxiliary agent, set the rotating speed of 320rpm for ball milling ...

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Abstract

The invention discloses a preparation method of a PET (Polyethylene Terephthalate) silver film. The preparation method comprises the following preparation steps: step 1, carrying out antioxidant treatment on silver powder; 2, preparing raw materials; and 3, stretching by adopting a two-way stretching method, and then heating to shape the stretched PET, so as to prepare the PET silver film. Compared with the prior art, the service life of the PET silver film is effectively prolonged, the surface friction resistance of the PET silver film is improved, sputtering equipment does not need to be used, the preparation steps are saved, the production efficiency is improved, and through sandwich protection of polyester on silver powder, the PET silver film has more excellent corrosion resistance on water vapor, oxygen, halide and sulfur-containing gas; therefore, the service life of the silver-plated reflecting film is prolonged, the layering phenomenon is effectively prevented, and the problems that an existing silver film is common in corrosion resistance, a plating layer is prone to falling off, equipment investment is large, and oxidation is prone to occurring are solved.

Description

technical field [0001] The invention relates to the technical field of reflective materials, in particular to a preparation method of a PET silver film. Background technique [0002] With the requirements of thinning, miniaturization and low power consumption of LCD in mobile phones, notebook computers, etc., high-performance backlight technology must be matched with it. The main function of the reflective film in the components of the backlight is to improve the reflectivity of the optical surface, and to reflect the light leaking from the bottom of the light guide plate efficiently and without loss, thereby reducing light consumption, reducing power consumption, and improving the light saturation of the liquid crystal display surface. Spend. Due to the advantages of high reflectivity and thin thickness, silver-coated reflective films have been widely used in portable devices such as mobile phones and tablet computers. However, metallic silver is unstable and will react w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L67/02C08K9/04C08K7/00C08K3/08C08J5/18
CPCC08J5/18C08J2367/00C08J2467/02C08J2467/00C08K9/04C08K7/00C08K2003/0806Y02E10/50
Inventor 林壁鹏赵成海秦柏威
Owner 深圳市西陆光电技术有限公司
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