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Preparation method of high-thermal-conductivity silicone rubber containing aluminum nitride/graphene hybrid material

A technology of hybrid materials and aluminum nitride, which is applied in the field of preparation of high-performance polymer materials, can solve problems such as poor mechanical properties, achieve good toughness, improve compatibility, and avoid damage

Inactive Publication Date: 2018-08-17
郑行良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a high proportion of thermally conductive fillers can improve the thermal conductivity of silicone rubber, it leads to poor mechanical properties

Method used

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  • Preparation method of high-thermal-conductivity silicone rubber containing aluminum nitride/graphene hybrid material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Add 1g of 3-aminopropyltriethoxysilane modified aluminum nitride and 2mg of glycidyl 3-trimethoxysilyl propyl ether modified graphene into 50mL of toluene, and after ultrasonication at room temperature for 15min, Raise the temperature to 70°C, react for 12 hours, filter the product, wash with ethanol, and dry it in vacuum at 60°C for 24 hours to prepare aluminum nitride / graphene hybrid material;

[0025] (2) Add 25 parts of the hybrid material prepared in step (1), 6 parts of aromatic hydrocarbon oil, and 3 parts of N-phenyl-α-naphthylamine to 100 parts of silicone rubber, and use a double-roll mill to mix at room temperature Refined for 30 minutes, and left at room temperature for 24 hours to prepare the mixed rubber;

[0026] (3) The mixed rubber prepared in step (2) is thin-passed 4 times at room temperature using a two-roll mill, and 3 parts of dicumyl peroxide are added in the thin-pass process, and vulcanized by a flat vulcanizer. The temperature is 100°C, th...

Embodiment 2

[0028] (1) Add 5g of 3-aminopropyltriethoxysilane modified aluminum nitride and 25mg of glycidyl 3-trimethoxysilyl propyl ether modified graphene into 90mL of toluene, and after ultrasonication at room temperature for 20min, Raise the temperature to 80°C, react for 8h, filter the product, wash with ethanol, and vacuum dry at 60°C for 12h to prepare aluminum nitride / graphene hybrid material;

[0029] (2) Add 40 parts of the hybrid material prepared in step (1), 7 parts of paraffin, and 4 parts of N-phenyl-N'-cyclohexyl-p-phenylenediamine to 100 parts of silicone rubber, and use double rollers at room temperature Mix in the open mill for 30 minutes, and place at room temperature for 24 hours to prepare the mixed rubber;

[0030] (3) Utilize the two-roller open mill to thinly pass the mixed rubber prepared in step (2) at room temperature for 6 times, add 2 parts of benzoyl peroxide in the thinly passed process, and utilize a flat vulcanizer to vulcanize, and the vulcanization tem...

example example 3

[0032] (1) Add 10g of 3-aminopropyltriethoxysilane modified aluminum nitride and 200mg of glycidyl 3-trimethoxysilyl propyl ether modified graphene into 300mL of toluene, and after ultrasonication at room temperature for 30min, Raise the temperature to 90°C, react for 4 hours, filter the product, wash with ethanol, and vacuum dry at 60°C for 24 hours to prepare aluminum nitride / graphene hybrid materials;

[0033] (2) Add 55 parts of the hybrid material prepared in step (1), 9 parts of vaseline, and 6 parts of calcium-zinc composite stabilizer to 100 parts of silicone rubber in turn, and knead for 60 minutes at room temperature using a double-roller mill. Leave it for 24 hours to prepare the mixed rubber;

[0034] (3) The mixed rubber prepared in step (2) is passed 8 times at room temperature using a two-roll mill, and 1 part of 2,4-dichlorobenzoyl peroxide is added during the thin pass, and vulcanized by a flat plate machine for vulcanization, the vulcanization temperature is...

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Abstract

The invention discloses a preparation method of high-thermal-conductivity silicone rubber containing an aluminum nitride / graphene hybrid material, and belongs to the technical field of preparation ofhigh-performance polymer materials. The preparation method comprises the following processes: (1) under the ultrasonic action, enabling modified aluminum nitride and modified graphene to be subjectedto reaction to prepare the aluminum nitride / graphene hybrid material; (2) sequentially adding the hybrid material prepared in the step (1), a softening agent and an anti-aging agent to silicone rubber, and performing mixing by utilizing an open mill to prepare mixing rubber; and (3) enabling the mixing rubber prepared in the step (2) to pass through two rollers of the open mill in a very small thickness for several times while adding a cross-linking agent so as to obtain sheets, and then, performing vulcanization to prepare vulcanized rubber, namely the high-thermal-conductivity silicone rubber containing the aluminum nitride / graphene hybrid material. The silicone rubber prepared by the preparation method disclosed by the invention has good toughness and elasticity and excellent thermal conductivity, can be widely applied to fixation, anti-shock filling and adhesion between a power device and a radiator in the fields of heating, electricity, electronics, aviation and the like, and hasobvious economic values and social benefits.

Description

technical field [0001] The invention belongs to the technical field of preparation of high-performance polymer materials, and in particular relates to a preparation method of high thermal conductivity silicon rubber containing aluminum nitride / graphene hybrid materials. technical background [0002] Thermally conductive materials are widely used in areas that require heat dissipation and heat transfer in aviation, aerospace, electronics and electrical fields. With the development of industry and the advancement of science and technology, people have put forward higher requirements for thermally conductive materials, which not only hope that they can provide safe and reliable heat dissipation channels for electronic components, but also play a role in shock absorption. In this regard, thermally conductive silicone rubber has special advantages. It not only has high elasticity and heat resistance, but also has certain thermal conductivity. However, the thermal conductivity of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L91/00C08L91/06C08K9/06C08K3/28C08K3/04C08K5/14C09K5/14
CPCC08K2003/282C08L83/04C09K5/14C08L91/00C08K9/06C08K3/28C08K3/042C08K5/14C08L91/06
Inventor 不公告发明人
Owner 郑行良
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