Heat-conducting ultrahigh-voltage-resistant insulating composite material and preparation method thereof

An insulating composite material, thermal insulation technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problem of reducing high voltage resistance, achieve excellent thermal conductivity, high thermal conductivity, excellent resistance The effect of ultra-high voltage performance

Active Publication Date: 2022-07-12
叶金蕊
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the thermal conductivity of the insulating composite material, thermally conductive fillers can be added to the insulating composite material, but this will significantly reduce the high-voltage resistance of the material. For the insulating composite material, both high thermal conductivity and the abi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat-conducting ultrahigh-voltage-resistant insulating composite material and preparation method thereof
  • Heat-conducting ultrahigh-voltage-resistant insulating composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The present invention provides, in a first aspect, a preparation method of a thermally conductive type ultra-high voltage-resistant insulating composite material, the preparation method comprising the following steps:

[0032] (1) Ball-milling the thermally conductive and insulating ceramic powder with a solvent to obtain a thermally conductive and insulating ceramic dispersion; the present invention has no particular restrictions on the particle size of the thermally conductive and insulating ceramic powder. In some specific embodiments, preferably , the average particle size of the thermally conductive and insulating ceramic powder is 1 to 2 μm; in the present invention, preferably, the mass ratio of the thermally conductive and insulating ceramic powder to the solvent is (1 to 2): (7 to 8) (for example, 1:7, 1:8, 2:7 or 2:8); the present invention has no special requirements for the solvent, and the solvent can be, for example, ethanol, acetone or other solvents that ...

Embodiment 1

[0069] Step 1: Preparation of Thermally Conductive Insulating Ceramic Dispersion

[0070]The thermally conductive and insulating ceramic powder (the thermally conductive and insulating ceramic powder prepared by mixing boron nitride and aluminum nitride with a mass ratio of 1:3) and ethanol with a mass ratio of 2:8 were added to the ball mill tank, and the ball mill was carried out with a planetary ball mill. , the speed of the ball mill is controlled at 400 rpm, and the ball milling time is 15 hours to prepare a thermally conductive and insulating ceramic dispersion.

[0071] Step 2: Prepare a mixture of thermally conductive and insulating ceramic dispersion and matrix resin

[0072] Mix the above-mentioned thermally conductive and insulating ceramic dispersion liquid with epoxy resin (E51 epoxy resin) according to a mass ratio of 100:30, and stir at room temperature for 2.5 hours to obtain a uniformly mixed mixture.

[0073] Step 3: Preparation of thermally conductive and i...

Embodiment 2

[0084] Embodiment 2 is basically the same as Embodiment 1, except that:

[0085] In step 1: the thermally conductive and insulating ceramic powder is boron nitride.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
Lengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a heat-conducting ultrahigh-voltage-resistant insulating composite material and a preparation method thereof. The method comprises the following steps: carrying out ball milling on heat-conducting insulating ceramic powder and a solvent to obtain a heat-conducting insulating ceramic dispersion liquid; uniformly mixing the heat-conducting insulating ceramic dispersion liquid with matrix resin to obtain a mixture; carrying out reduced pressure distillation on the mixture to obtain heat-conducting insulating ceramic modified matrix resin; preparing a chopped fiber prepreg from chopped fibers and heat-conducting insulating ceramic modified matrix resin; preparing a continuous fiber prepreg sheet from continuous fiber cloth and heat-conducting insulating ceramic modified matrix resin; the continuous fiber prepreg sheets and the chopped fiber prepreg are alternately laid until the preset thickness is reached, and alternately laid prepreg is obtained; and carrying out mold pressing curing on the alternately-laid prepreg to obtain the heat-conducting ultrahigh-voltage-resistant insulating composite material. The heat-conducting ultrahigh-voltage-resistant insulating composite material obtained by the invention has high mechanical property and excellent heat conduction capability, and has better voltage resistance compared with a traditional laminated board.

Description

technical field [0001] The invention belongs to the technical field of fiber-reinforced insulating composite materials, and particularly relates to a thermally conductive type ultra-high voltage-resistant insulating composite material and a preparation method thereof. Background technique [0002] UHV transmission projects are the backbone grids for clean energy transmission, and fiber-reinforced insulating composite materials are key insulating materials for UHV electrical equipment, which are crucial to the safe and stable operation of power grid projects. As an insulating structural member, fiber reinforced insulating composite material not only needs to have good mechanical properties, but also has higher requirements for withstand voltage performance. At the same time, the material requires certain insulation and thermal conductivity to prevent heat from accumulating inside the material, causing potential safety hazards. . In the packaging of high-power power electroni...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B32B27/38
CPCB32B27/38B32B27/42B32B27/283B32B27/20B32B27/12B32B5/02B32B37/06B32B37/10C08J5/24H01H3/02B32B2250/42B32B2260/021B32B2260/046B32B2262/0269B32B2262/0276B32B2262/0261B32B2264/107B32B2307/206B32B2307/302C08J2363/02C08K2003/385C08K2003/282C08K7/14
Inventor 叶金蕊
Owner 叶金蕊
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap