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Heat-conducting silicone grease composition for liquid-crystal-display television and preparation method for same

A technology for thermal conductive silicone grease and liquid crystal TV, which is applied in the field of silicone grease composition and its preparation, can solve the problems of image viewing, thick liquid crystal gap, poor display effect, etc., and achieves the effect of reducing contact thermal resistance and high thermal conductivity

Inactive Publication Date: 2014-02-12
SHANGHAI LILONG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of resolution, liquid crystal displays can theoretically provide higher resolution, but the actual display effect is much worse (there is a problem of optimal resolution), although LCD TVs can overcome the jitter and flicker of scanning lines, but Due to the thick gap of the liquid crystal itself, it will cause the image to be viewed like a grid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Weigh 15 kg of silicon carbide, 45 kg of aluminum powder and 15 kg of boron nitride, stir and mix evenly to prepare a mixed thermally conductive filler.

[0040] The silicon carbide, aluminum powder and boron nitride are in powder or granular form, and the shape can be amorphous, spherical or any shape.

[0041] (2) Mixed coupling agent preparation: 15 kg of isopropyl distearoyloxyaluminate, 35 kg of trioctanoyl isopropyl titanate, 35 kg of triisostearoyl isopropyl titanate, stir and mix evenly.

[0042] (2) Surface modification treatment of the thermally conductive filler with coupling agent: take 65 kg of the above mixed thermally conductive filler under high-speed stirring, the rotating speed is 2500r / min, spray 0.65 kg of the above-mentioned mixed coupling agent, and then continue to stir for 10 minutes to obtain a modified thermally conductive filler.

[0043] (3) 35 kg of methylphenyl vinyl silicone rubber, 15 kg of dimethyl silicone oil, all of the above mo...

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Abstract

The invention discloses a heat-conducting silicone grease composition for a liquid-crystal-display television and a preparation method for the same. The heat-conducting silicone grease composition for the liquid-crystal-display television is formed by compounding the following constituents in parts by weight: 30-40 parts of methyl phenyl vinyl silicone rubber, 10-20 parts of dimethyl silicon oil, 60-70 parts of a heat-conducting filler, 3-5 parts of dicumyl peroxide and a coupling agent, wherein the dosage of the coupling agent is 0.5-2% of the weight of the heat-conducting filler, and the heat-conducting filler is the mixture of silicon carbide, aluminium powder and boron nitride; further, the heat-conducting filler is composed of the following constituents in parts by weight: 10-20 parts of isopropyl diacetoxystearate, 30-40 parts of isopropyl tricaprylyl titanate and 30-40 parts of triisostearoyl isopropyl titanate. The heat-conducting silicone grease composition for the liquid-crystal-display television disclosed by the invention is in effective contact with a heating assembly and a heat dissipation assembly so as to reduce contact thermal resistance between the heating assembly and the heat dissipation assembly, and has a high heat conductivity coefficient.

Description

technical field [0001] The invention relates to a silicone grease composition and a preparation method thereof, in particular to a thermal conductive silicone grease composition for liquid crystal televisions and a preparation method thereof. Background technique [0002] LCD TV refers to a TV set that completely uses light-emitting diode LED as a display device, which is generally used for low-precision display or outdoor large screen. At present, the strict name of the LED TV usually referred to in the home appliance industry in mainland China is "LED backlight LCD TV", which replaces the traditional fluorescent tube with LED light source, the picture is better, the theoretical life is longer, and the production process is more environmentally friendly. And the liquid crystal display panel can be made thinner. [0003] Liquid crystal is a substance between solid and liquid. It is an organic compound with regular molecular arrangement. If it is heated, it will appear in a ...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08K13/06C08K9/04C08K5/14C08K3/34C08K3/08C08K3/38
Inventor 宋国新
Owner SHANGHAI LILONG CHEM FIBER
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