CN113652205A - Heat-conducting insulating phase-change heat-absorbing composite potting material and potting method thereof - Google Patents
Heat-conducting insulating phase-change heat-absorbing composite potting material and potting method thereof Download PDFInfo
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- CN113652205A CN113652205A CN202110946033.5A CN202110946033A CN113652205A CN 113652205 A CN113652205 A CN 113652205A CN 202110946033 A CN202110946033 A CN 202110946033A CN 113652205 A CN113652205 A CN 113652205A
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- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 title claims abstract description 21
- 238000004382 potting Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000012188 paraffin wax Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 229940057995 liquid paraffin Drugs 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 26
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 12
- 239000000395 magnesium oxide Substances 0.000 claims description 12
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- 235000021355 Stearic acid Nutrition 0.000 claims description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 6
- 239000008117 stearic acid Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000012782 phase change material Substances 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 8
- 239000003566 sealing material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910021389 graphene Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Composite Materials (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
Abstract
The invention discloses a heat-conducting insulating phase-change heat-absorbing composite potting material and a potting method thereof, wherein the potting material comprises 30-95% of paraffin and 5-70% of heat-conducting insulating phase-change medium; the method comprises the following steps: step one, paraffin with the mass fraction of 30% -95% is heated to 50 ℃ -60 ℃ to become liquid, and the viscosity is 150-180 mPas; adding a powdery heat-conducting and insulating phase change medium with the mass fraction of 5% -70% and the fineness of 500-2000 meshes into liquid paraffin, and uniformly mixing to obtain a liquid mixture; step three, pouring the liquid mixture obtained in the step two into a closed module; step four, performing omnidirectional rolling motion on the closed module to enable the liquid mixture in the closed module to be cooled and solidified; the filling and sealing method can uniformly mix the paraffin and the heat-conducting insulating phase-change medium, not only improves the heat conductivity coefficient, but also can ensure that the heat conductivity coefficient of the composite filling and sealing material is uniform and stable, and obtains the optimal heat management effect.
Description
Technical Field
The invention relates to an electronic component encapsulating material, in particular to a heat-conducting insulating phase-change heat-absorbing composite encapsulating material and an encapsulating method thereof.
Background
Many electrical components require potting materials that conduct heat, absorb heat, and insulate in order to prevent a sharp temperature rise from occurring inside due to a short circuit fault, even causing combustion and explosion. The specific heat capacity, the melting heat capacity and the gasification heat capacity of the potting material absorb heat, so that the electrical appliance element can be limited from releasing heat energy to generate higher temperature rise; in order to solve the problem of thermal runaway of electrical components, paraffin phase change media can be adopted to absorb heat to prevent thermal runaway, but the thermal conductivity of paraffin is very low, the effect of heat absorption and heat dissipation is not very good, in order to improve the thermal conductivity of paraffin, a method of adding graphite fine powder and graphene into paraffin to form a composite heat conduction material is often adopted, but the insulation performance of the graphite fine powder and the graphene is not good, and the method cannot be used for pot filling of lithium battery modules.
Disclosure of Invention
The invention aims to solve the technical problem of providing a heat-conducting insulating phase-change heat-absorbing composite potting material with high heat conductivity coefficient.
In order to solve the technical problems, the technical scheme of the invention is as follows: the heat-conducting insulating phase-change heat-absorbing composite potting material comprises 30-95% of paraffin and 5-70% of heat-conducting insulating phase-change medium by mass.
As a preferable technical scheme, the heat-conducting and insulating phase-change medium comprises magnesium oxide nano micro powder.
As a preferable technical scheme, the heat-conducting and insulating phase change medium comprises silicon nitride fine powder or aluminum nitride fine powder.
As a preferred technical solution, the heat-conducting and insulating phase change medium includes stearic acid.
By adopting the technical scheme, the heat-conducting insulating phase-change heat-absorbing composite potting material comprises 30-95% of paraffin and 5-70% of heat-conducting insulating phase-change medium by mass; after the heat-conducting insulating phase-change medium is mixed with the paraffin, the heat conductivity coefficient of the paraffin can be greatly improved.
The invention aims to solve another technical problem of providing a filling and sealing method of a heat-conducting insulating phase-change heat-absorbing composite filling and sealing material.
In order to solve the technical problems, the technical scheme of the invention is as follows: a filling and sealing method of a heat-conducting insulating phase-change heat-absorbing composite filling and sealing material comprises the following steps:
step one, paraffin with the mass fraction of 30% -95% is heated to 50 ℃ -60 ℃ to become liquid, and the viscosity is 150-180 mPas;
adding a powdery heat-conducting and insulating phase change medium with the mass fraction of 5% -70% and the fineness of 500-2000 meshes into liquid paraffin, and uniformly mixing to obtain a liquid mixture;
step three, pouring the liquid mixture obtained in the step two into a closed module;
and step four, performing omnidirectional rolling motion on the closed module to enable the liquid mixture in the closed module to be cooled and solidified.
As a preferable technical scheme, the heat-conducting and insulating phase change medium comprises magnesium oxide nano micro powder, and the particle size d50 of the magnesium oxide nano micro powder is 50-200 nm.
As a preferable technical scheme, the heat-conducting and insulating phase change medium comprises silicon nitride fine powder, aluminum nitride fine powder or stearic acid.
Due to the adoption of the technical scheme, the encapsulating method of the heat-conducting insulating phase-change heat-absorbing composite encapsulating material comprises the following steps: step one, paraffin with the mass fraction of 30% -95% is heated to 50 ℃ -60 ℃ to become liquid, and the viscosity is 150-180 mPas; adding a powdery heat-conducting and insulating phase change medium with the mass fraction of 5% -70% and the fineness of 500-2000 meshes into liquid paraffin, and uniformly mixing to obtain a liquid mixture; step three, pouring the liquid mixture obtained in the step two into a closed module; step four, performing omnidirectional rolling motion on the closed module to enable the liquid mixture in the closed module to be cooled and solidified; the filling and sealing method can uniformly mix the paraffin and the heat-conducting insulating phase-change medium, so that the heat conductivity coefficient of the composite filling and sealing material of the sealing module is uniform and stable, and the optimal heat management effect is obtained.
Detailed Description
The invention is further illustrated by the following examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the description is illustrative in nature and not intended to limit the scope of the claims.
The heat-conducting insulating phase-change heat-absorbing composite potting material comprises 30-95% of paraffin and 5-70% of heat-conducting insulating phase-change medium by mass.
The heat-conducting insulating phase change medium comprises magnesium oxide nano micro powder, silicon nitride fine powder, aluminum nitride fine powder or stearic acid. After the heat-conducting insulating phase-change medium is mixed with the paraffin, the heat conductivity coefficient of the paraffin can be greatly improved.
Taking the magnesium oxide nano micro powder as an example, when the added weight part of the magnesium oxide nano micro powder is 30%, the solid thermal conductivity of the composite potting material reaches 0.25-0.35W/m.K within the range of 30-40 ℃, which is 2-3 times of the thermal conductivity (0.114W/m.K) of paraffin, and the insulation resistance of the 1mm wide composite potting material reaches 5 MOmega and is close to that of the paraffin.
A filling and sealing method of a heat-conducting insulating phase-change heat-absorbing composite filling and sealing material comprises the following steps:
step one, paraffin with the mass fraction of 30% -95% is heated to 50 ℃ -60 ℃ to become liquid, and the viscosity is 150-180 mPas;
adding a powdery heat-conducting and insulating phase change medium with the mass fraction of 5% -70% and the fineness of 500-2000 meshes into liquid paraffin, and uniformly mixing to obtain a liquid mixture;
step three, pouring the liquid mixture obtained in the step two into a closed module;
and step four, performing omnidirectional rolling motion on the closed module to enable the liquid mixture in the closed module to be cooled and solidified.
The heat-conducting insulating phase change medium comprises magnesium oxide nano micro powder, and the particle size d50 of the magnesium oxide nano micro powder is 50-200 nanometers.
Besides the magnesium oxide nanometer micro powder, the heat-conducting and insulating phase change medium can also adopt silicon nitride fine powder, aluminum nitride fine powder or stearic acid.
The filling and sealing method can uniformly mix the paraffin and the heat-conducting insulating phase-change medium, so that the heat conductivity coefficient of the composite filling and sealing material of the sealing module is uniform and stable, and the optimal heat management effect is obtained.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a heat conduction insulation phase transition endothermic compound potting material which characterized in that: the paraffin wax-based phase-change material comprises 30-95% of paraffin wax and 5-70% of heat-conducting insulating phase-change medium.
2. The heat-conducting insulating phase-change heat-absorbing composite potting material of claim 1, wherein: the heat-conducting insulating phase-change medium comprises magnesium oxide nano micro powder.
3. The heat-conducting insulating phase-change heat-absorbing composite potting material of claim 1, wherein: the heat-conducting insulating phase change medium comprises silicon nitride fine powder or aluminum nitride fine powder.
4. The heat-conducting insulating phase-change heat-absorbing composite potting material of claim 1, wherein: the thermally conductive and insulating phase change medium comprises stearic acid.
5. The method for encapsulating the composite encapsulating material based on claim 1, characterized by comprising the following steps:
step one, paraffin with the mass fraction of 30% -95% is heated to 50 ℃ -60 ℃ to become liquid, and the viscosity is 150-180 mPas;
adding a powdery heat-conducting and insulating phase change medium with the mass fraction of 5% -70% and the fineness of 500-2000 meshes into liquid paraffin, and uniformly mixing to obtain a liquid mixture;
step three, pouring the liquid mixture obtained in the step two into a closed module;
and step four, performing omnidirectional rolling motion on the closed module to enable the liquid mixture in the closed module to be cooled and solidified.
6. The potting method of claim 5, wherein: the heat-conducting insulating phase change medium comprises magnesium oxide nano micro powder, and the particle size d50 of the magnesium oxide nano micro powder is 50-200 nanometers.
7. The potting method of claim 5, wherein: the heat-conducting insulating phase change medium comprises silicon nitride fine powder, aluminum nitride fine powder or stearic acid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110946033.5A CN113652205A (en) | 2021-08-17 | 2021-08-17 | Heat-conducting insulating phase-change heat-absorbing composite potting material and potting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110946033.5A CN113652205A (en) | 2021-08-17 | 2021-08-17 | Heat-conducting insulating phase-change heat-absorbing composite potting material and potting method thereof |
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| CN113652205A true CN113652205A (en) | 2021-11-16 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849356A (en) * | 2014-03-20 | 2014-06-11 | 中国电子科技集团公司第三十三研究所 | Electrical insulating phase-change heat conducting material and preparation method thereof |
| CN106188903A (en) * | 2016-08-29 | 2016-12-07 | 昆山裕凌电子科技有限公司 | Phase-change heat conductive material and preparation method thereof |
| CN109401729A (en) * | 2018-10-22 | 2019-03-01 | 广东工业大学 | A kind of battery thermal management system thermally conductive sizing phase-change material and preparation method thereof |
| CN109536138A (en) * | 2018-12-29 | 2019-03-29 | 苏州铂韬新材料科技有限公司 | Waveguide hot material and preparation method thereof is inhaled in a kind of paste phase transformation |
-
2021
- 2021-08-17 CN CN202110946033.5A patent/CN113652205A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849356A (en) * | 2014-03-20 | 2014-06-11 | 中国电子科技集团公司第三十三研究所 | Electrical insulating phase-change heat conducting material and preparation method thereof |
| CN106188903A (en) * | 2016-08-29 | 2016-12-07 | 昆山裕凌电子科技有限公司 | Phase-change heat conductive material and preparation method thereof |
| CN109401729A (en) * | 2018-10-22 | 2019-03-01 | 广东工业大学 | A kind of battery thermal management system thermally conductive sizing phase-change material and preparation method thereof |
| CN109536138A (en) * | 2018-12-29 | 2019-03-29 | 苏州铂韬新材料科技有限公司 | Waveguide hot material and preparation method thereof is inhaled in a kind of paste phase transformation |
Non-Patent Citations (1)
| Title |
|---|
| 周文英等, 上海辞书出版社 * |
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