Polyhedral monocrystal aluminum oxide/aluminum nitride/epoxy resin heat-conducting composite material and preparation method thereof
The invention relates to a polyhedral single crystal aluminum oxide/aluminum nitride/epoxy resin heat-conducting composite material and a preparation method thereof. The preparation method is characterized by comprising the following steps: (1) taking 20-75 parts of polyhedral single crystal aluminu...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
31.12.2021
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to a polyhedral single crystal aluminum oxide/aluminum nitride/epoxy resin heat-conducting composite material and a preparation method thereof. The preparation method is characterized by comprising the following steps: (1) taking 20-75 parts of polyhedral single crystal aluminum oxide powder with D50 of 18-22 microns, 5-30 parts of aluminum nitride powder with D50 of 2-4 microns, 2-8 parts of polyhedral single crystal aluminum oxide with D50 of 0.3-0.5 microns and 10-50 parts of E51 epoxy resin for later use; (2) carrying out dry modification on the polyhedral single crystal aluminum oxide and aluminum nitride powder; (3) putting the modified powder, a curing agent and an accelerant into a star mill for mixing; then adding the mixture into a vacuum defoaming machine for defoaming; and then carrying out curing treatment. The method has the advantages that a ternary granularity close packing system is adopted, close packing is achieved, an efficient, continuous and wide heat conduction cha |
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Bibliography: | Application Number: CN202111124948 |