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Heat dissipating material for LCD touch liquid crystal display and preparation method and application thereof

A technology of liquid crystal display and heat dissipation material, which is applied in heat exchange materials, chemical instruments and methods, instruments, etc., can solve the problems of poor thermal conductivity and electrical insulation performance, poor tensile yield strength, and inability to have both performances, etc. Achieve the effects of low production cost, good thermal conductivity, and improved elongation at break and thermal conductivity

Active Publication Date: 2017-06-13
CHENZHOU HAILI MICROELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the heat sinks used in LCD-related products in the prior art have defects such as poor thermal conductivity and electrical insulation performance, easy thermal deformation, poor tensile yield strength, and easy breakage, which greatly reduces product life.
Many researchers have improved the performance of heat sinks by exploring new materials and new processes, but often the various performances cannot be achieved at the same time and cannot meet the requirements

Method used

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  • Heat dissipating material for LCD touch liquid crystal display and preparation method and application thereof

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Embodiment 1

[0024] In an embodiment of the present invention, a heat dissipation material for an LCD touch liquid crystal display is composed of the following raw materials in parts by weight: 15 parts of graphite, 9 parts of nickel nitrate, 5 parts of vinyl triethoxysilane, and dibenzoyl 3 parts of p-quinone dioxime, 11 parts of diacetone acrylamide, 20 parts of waste rubber powder.

[0025] Mixing vinyl triethoxy silane with 5.5 times the mass of deionized water to prepare a vinyl triethoxy silane solution; mixing diacetone acrylamide with 7.8 times the mass of ethanol to prepare a diacetone acrylamide solution. The waste rubber powder is crushed, passed through a 120-mesh sieve, and then placed in a polytetrafluoroethylene reactor with the vinyltriethoxysilane solution, sealed, and then filled with nitrogen to make the pressure reach 4.8MPa, and then heated to 82°C , And heated and stirred for 1.4h at this temperature to obtain a modified waste rubber mixture. Graphite, nickel nitrate an...

Embodiment 2

[0027] In an embodiment of the present invention, a heat dissipation material for LCD touch liquid crystal display screens is composed of the following raw materials in parts by weight: 23 parts of graphite, 17 parts of nickel nitrate, 12 parts of vinyl triethoxysilane, and dibenzoyl 7 parts of p-quinone dioxime, 19 parts of diacetone acrylamide, 30 parts of waste rubber powder.

[0028] Mixing vinyl triethoxy silane with 5.5 times the mass of deionized water to prepare a vinyl triethoxy silane solution; mixing diacetone acrylamide with 7.8 times the mass of ethanol to prepare a diacetone acrylamide solution. The waste rubber powder is crushed, passed through a 120-mesh sieve, and then placed in a polytetrafluoroethylene reactor with the vinyltriethoxysilane solution, sealed, and then filled with nitrogen to make the pressure reach 5MPa, and then heated to 82°C. The mixture was heated and stirred for 1.4 hours at this temperature to obtain a modified waste rubber mixture. Graphi...

Embodiment 3

[0030] In an embodiment of the present invention, a heat dissipation material for LCD touch liquid crystal display screens is composed of the following raw materials in parts by weight: 17 parts of graphite, 11 parts of nickel nitrate, 7 parts of vinyl triethoxysilane, and dibenzoyl 4 parts of p-quinone dioxime, 13 parts of diacetone acrylamide, 22 parts of waste rubber powder.

[0031] Mixing vinyl triethoxy silane with 5.5 times the mass of deionized water to prepare a vinyl triethoxy silane solution; mixing diacetone acrylamide with 7.8 times the mass of ethanol to prepare a diacetone acrylamide solution. Crush the waste rubber powder and pass it through a 120-mesh sieve, then place it and the vinyltriethoxysilane solution into a polytetrafluoroethylene reactor for sealing, then fill it with nitrogen to make the pressure reach 4.9MPa, and then heat to 82°C , And heated and stirred for 1.4h at this temperature to obtain a modified waste rubber mixture. Graphite, nickel nitrate...

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Abstract

The invention discloses a heat dissipating material for LCD touch liquid crystal display and a preparation method and application thereof. The heat dissipating material is prepared from the following raw materials in parts by weight: 15 to 23 parts of graphite, 9 to 17 parts of nickel nitrate, 5 to 12 parts of vinyltriethoxysilane, 3 to 7 parts of dibenzoylquinone dioxime, 11 to 19 parts of diacetone-acryloamide and 20 to 30 parts of waste rubber powder. The preparation method comprises the following steps: putting the waste rubber powder and a vinyltriethoxysilane solution in a polytetrafluoroethylene reaction still for sealing, pressurization, heating stirring processing to prepare a modified waste rubber mixture; mixing and grinding the graphite, nickel nitrate and dibenzoylquinone dioxime, then heating a diacetone-acryloamide solution to prepare a modified graphite mixture; mixing the two mixtures, and carrying out ultrasonic processing, heating stirring, melt extrusion and injection molding to form the heat dissipating material. According to the heat dissipating material, relatively high heat-conducting property and insulating property are effectively maintained, and the tensile yield strength and elongation at break are improved. The heat dissipating material disclosed by the invention is resistant to high temperature, resistant to aging and resistant to corrosion, and is low in production cost.

Description

Technical field [0001] The invention relates to the technical field of liquid crystal display screens, in particular to a heat dissipation material for LCD touch-control liquid crystal display screens, and a preparation method and application thereof. Background technique [0002] With the development of technology and the continuous improvement of people's requirements, the original traditional cathode ray tube (CRT) display is increasingly dissatisfied with the disadvantages of large volume, heavy weight and high power consumption. Especially in portable, miniaturized, and low-power applications, people expect the appearance of flat panel displays with small size, light weight, and low power consumption. Driven by this demand, liquid crystal flat panel displays (LCDs) first came into being. Due to the advantages of liquid crystal display (LCD) in light, thin, short, low power consumption, no radiation, flat right-angle display and stable image without flicker, it has led a con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00C08K9/04C08K3/04C08K3/28C09K5/14G02F1/1333
CPCC08K3/04C08K3/28C08K9/04C08L2201/08C09K5/14G02F1/133382C08L21/00
Inventor 唐乾军
Owner CHENZHOU HAILI MICROELECTRONICS TECH
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