Thermal-conductive insulating material and preparation method thereof

A heat-conducting insulating material and epoxy resin technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve problems such as poor thermal conductivity, and achieve the effects of improving thermal conductivity, strong containment force, and improved thermal conductivity

Inactive Publication Date: 2019-02-01
上海岱梭动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to propose a thermally conductive insulating material and its preparation method, aiming to solve the problem of poor thermal conductivity of current insulating materials

Method used

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  • Thermal-conductive insulating material and preparation method thereof

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preparation example Construction

[0032] The invention also proposes a method for preparing a thermally conductive insulating material, figure 1 It is an embodiment of the preparation method of the thermally conductive insulating material provided by the present invention. see figure 1 , the preparation method of the thermally conductive insulating material comprises the following steps:

[0033] S10: adding the polymer matrix material and the epoxy resin into the high-speed mixer in sequence, and stirring and mixing at a high speed to obtain a mixture A.

[0034] Wherein, the working conditions of the high-speed mixer are a temperature of 100-120°C, a rotation speed of 200-250r / min, and a stirring time of 1-1.5h.

[0035] S20: adding the coupling agent into an absolute ethanol solvent to prepare a coupling agent solution, adding aluminum nitride and multi-layer graphene into the coupling agent solution, stirring, suction filtering, and drying to obtain a mixture B.

[0036] S30: Add mixture A, mixture B, n...

Embodiment 1

[0041] (1) Add 300g of silicone rubber and 200g of bisphenol A epoxy resin to the high-speed mixer in sequence, adjust the speed of the mixer to 200r / min at 110°C, and mix at high speed for 1h to obtain the A mixture;

[0042] (2) 20g of coupling agent is added to anhydrous ethanol solvent to prepare coupling agent solution, add 200g aluminum nitride and 50g multilayer graphene in coupling agent solution, stir, suction filter, dry, obtain B mixture ;

[0043] (3) Add mixture A, mixture B, 10g nano-calcium carbonate and 2g flame retardant to a twin-screw extruder with a rotation speed of 300r / min and a temperature of 200°C in sequence, and extrude and granulate after the mixture is completely melted , Injection molding at 185°C.

Embodiment 2

[0045] (1) Add 300g of silicone rubber and 200g of bisphenol A epoxy resin to the high-speed mixer in sequence, adjust the speed of the mixer to 200r / min at 110°C, and mix at high speed for 1h to obtain the A mixture;

[0046] (2) 20g coupling agent is added in the absolute ethanol solvent to prepare coupling agent solution, add 230g aluminum nitride and 80g multilayer graphene in coupling agent solution, stir, suction filter, dry, obtain B mixture ;

[0047] (3) Add mixture A, mixture B, 13g nano-calcium carbonate and 3g flame retardant to a twin-screw extruder with a rotation speed of 300r / min and a temperature of 200°C in sequence, and extrude and granulate after the mixture is completely melted , Injection molding at 185°C.

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Abstract

The invention discloses a thermal-conductive insulating material and a preparation method thereof. The thermal-conductive insulating material provided by the invention comprises the following components by mass parts: 15-30 parts of a polymer matrix material, 20-30 parts of epoxy resin, 5-10 parts of multilayer graphene, 20-25 parts of aluminum nitride, 10-15 parts of nano calcium carbonate, 2-5 parts of a coupling agent and 2-5 parts of a flame retardant, The large specific surface area of the multilayer graphene is used, when the multilayer graphene is in contact with the polymer matrix material and the epoxy resin, the interaction force is large, the holdback force to the polymer matrix material is strong, the expansion of the matrix body can be resisted, The spherical aluminum nitridewith a uniform particle size is used and can be better connected in the matrix material, and has good fluidity, which provides a good heat conduction channel for the prepared insulating material and improves the thermal conductivity of the insulating material. The insulating material prepared by the invention can be used as a packaging material of a chip, and is used in a packaging process of thechip, and can obtain the higher insulation voltage than a conventional material under the same isolation distance; at the same time, due to the improvement of thermal conductivity, the thermal resistance of the chip is effectively reduced, so that the prepared chip can withstand greater current and power consumption, and the application range of the chip is enlarged.

Description

technical field [0001] The invention relates to the technical field of insulating materials, in particular to a thermally conductive insulating material and a preparation method thereof. Background technique [0002] With the development of electronic equipment and components in the direction of thinness and miniaturization, heat dissipation has become an increasingly important issue in the electronic packaging and heat conduction industries. Packaging materials with thermal conductivity and insulation are effective for heat dissipation and heat dissipation of high-frequency microelectronic components. It plays an extremely important role in improving the working efficiency of the device and prolonging the service life. [0003] For insulating materials, because there is no movement of electron flow, their thermal conductivity is 500-1000 times worse than that of metal materials. So far, there is no polymer material that has good thermal conductivity and insulation at the sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L63/00C08L83/14C08K13/06C08K9/06C08K9/04C08K7/18C08K3/28C08K3/04C08K3/26C09K5/14
CPCC08K2003/265C08K2003/282C08K2201/011C08L83/04C08L2203/206C08L2205/03C09K5/14C08L63/00C08L83/14C08K13/06C08K9/06C08K9/04C08K7/18C08K3/28C08K3/042C08K3/26
Inventor 余执钧熊伟金荣华
Owner 上海岱梭动力科技有限公司
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