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Preparation method of resistive screen hardening liquid

A technology of resistive screen and adding hard liquid, applied in coating and other directions, can solve problems such as short life, and achieve the effect of prolonging service life, less environmental pollution and fast curing speed

Inactive Publication Date: 2012-12-19
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For resistive screens, if the problem of short life can be solved, the huge cost difference will prompt electronic product manufacturers to choose resistive screens again.

Method used

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  • Preparation method of resistive screen hardening liquid
  • Preparation method of resistive screen hardening liquid
  • Preparation method of resistive screen hardening liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take 50g of methyltrimethoxysilane, 50g of γ-glycidoxypropyltrimethoxysilane (KH-560), and 10g of phenyltriethoxysilane and mix them evenly. Mix 30g of methanol, 2g of acetylacetone and 50g of water, add the resulting mixed solution into the uniformly mixed silane coupling agent, and at the same time add 20g of ethylene glycol diglycidyl ether, and hydrolyze at a constant temperature of 30°C for 24h. Take 40g of ethylene glycol methyl ether, 66.7g of ethylene glycol butyl ether, 200g of isopropanol, 13.3g of n-butanol, and 40g of acetone, and mix them evenly. Filter the hydrolyzed product to remove impurities, mix 200g of the hydrolyzed product with 300g of solvent, add 2.5g of leveling agent BYK-320, 2.5g of defoamer FS-31, and mix well to obtain the resistance screen hardened liquid. The hardening solution was dip-coated on the surface of the PET film and cured at 70°C for 30 minutes. The resulting film was observed by SEM, as figure 1 As shown, the surface particle...

Embodiment 2

[0035] Take 20g of methyltriethoxysilane, 20g of 3-glycidyloxypropylmethyldiethoxysilane, and 4g of diphenyldimethoxysilane and mix them uniformly. Mix 12g of methanol, 0.8g of acetylacetone and 20g of water, add the resulting mixed solution into the well-mixed silane coupling agent, add 8g of ethylene glycol diglycidyl ether at the same time, and hydrolyze at a constant temperature of 30°C for 24h. Take 20 g of ethylene glycol methyl ether, 33.3 g of ethylene glycol butyl ether, 100 g of isopropanol, 6.67 g of n-butanol, and 20 g of acetone, and mix them evenly. Filter the hydrolyzed product to remove impurities, mix 70g of the hydrolyzed product with 105g of solvent, add 2.5g of leveling agent BYK-320, 2.5g of defoamer FSO-100, and mix well to obtain the resistance screen hardened liquid. Using a Samsung i900 resistive screen mobile phone, remove the outer screen film of the resistive screen, apply the hardened liquid evenly on the outer screen by rolling coating, cure at 70...

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Abstract

The invention belongs to the field of electronic products, and particularly relates to a preparation method of resistive screen hardening liquid. The method particularly comprises the following steps: mixing a silane coupling agent and glycidyl ether according to a certain ratio, performing hydrolysis by a proper amount of mixed liquid of deionized water, alcohols and acetylacetone for 15-24 hours; mixing the hydrolyzed product with a solvent according to a ratio of 2:3, adding a proper amount of a levelling agent and an antifoaming agent to obtain the mobile phone screen hardening liquid. An outer screen of a resistive screen (a PET film) is soaked with a 0.1 mol / L sodium hydroxide solution for 5 min, and is cleaned; then the film surface is uniformly coated with the hardening liquid by methods of dip-coating or roller coating, dried and cured at 70 DEG C for 30 min to obtain a hardened resistive outer screen with a pencil hardness of up to 6H. The preparation method of the invention has the characteristics of simple process and low cost, can enhance the surface hardness of resistive screens, improve scraping resistance, and prolong the service life of resistive screens.

Description

technical field [0001] The invention belongs to the field of electronic products, and in particular relates to a method for preparing a resistance screen hardening liquid. Background technique [0002] With the development of computer technology and the popularization of multimedia information inquiry, people pay more and more attention to the touch screen, which is a transparent medium attached to the surface of the display. Using this technology, the user can realize the operation and positioning of the computer by lightly touching the icons or characters on the computer display screen with his fingers, and get rid of the keyboard and mouse operations, thereby simplifying the computer input method and truly realizing zero. distance operation. Early touch screens were mainly used in the touch control of cutting-edge instruments. With the development of touch screen technology, especially the commercialization of resistive screens, touch screen technology began to play an i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C09D7/12
Inventor 杨超杨振国严石
Owner FUDAN UNIV
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