CN114318938A - High-thermal-conductivity aramid fiber mica paper and manufacturing method thereof - Google Patents
High-thermal-conductivity aramid fiber mica paper and manufacturing method thereof Download PDFInfo
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- CN114318938A CN114318938A CN202111271003.5A CN202111271003A CN114318938A CN 114318938 A CN114318938 A CN 114318938A CN 202111271003 A CN202111271003 A CN 202111271003A CN 114318938 A CN114318938 A CN 114318938A
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- 239000010445 mica Substances 0.000 title claims abstract description 104
- 229910052618 mica group Inorganic materials 0.000 title claims abstract description 104
- 229920006231 aramid fiber Polymers 0.000 title claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims description 41
- 239000006185 dispersion Substances 0.000 claims description 38
- 239000002657 fibrous material Substances 0.000 claims description 38
- 238000011282 treatment Methods 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 238000012216 screening Methods 0.000 claims description 12
- 239000011265 semifinished product Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000003490 calendering Methods 0.000 claims description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000010292 electrical insulation Methods 0.000 abstract description 2
- 239000012774 insulation material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 13
- 239000011259 mixed solution Substances 0.000 description 5
- 239000011231 conductive filler Substances 0.000 description 4
- 239000010459 dolomite Substances 0.000 description 4
- 229910000514 dolomite Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 210000000582 semen Anatomy 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052627 muscovite Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention discloses a heat-conducting aramid fiber mica paper and a manufacturing method thereof. The aramid fiber mica paper with high thermal conductivity keeps the characteristics of high temperature and high pressure resistance, insulation resistance and corona resistance of mica, and the aramid fiber and the mica are compounded, so that the mechanical property and the processability of the composite material can be improved, and the application field of the composite material is expanded; the mica and the aramid fiber have good electrical insulation performance at the same time, and the prepared insulation material combines the advantages of the mica and the aramid fiber and has better and more comprehensive insulation performance; the addition of the heat-conducting filler enhances the heat-conducting property of the mica paper, but does not influence the electrical property of the mica paper.
Description
Technical Field
The invention relates to the technical field of mica paper, in particular to aramid fiber mica paper with high thermal conductivity and a manufacturing method thereof.
Background
Natural mica has excellent physical and chemical stability, especially good insulating properties. The mica paper is a paper-like non-metal insulating material which is made up by using broken mica as raw material and combining the van der Waals force between mica scales and electrostatic attraction force together, and can retain the properties of high-temp. resistance, high-pressure resistance, insulation resistance and corona resistance of natural mica, in particular its high-temp. resistance and reprocessing property can not be substituted by other materials.
In some high-temperature environments, heat conduction materials need to be added to ensure that circuits or instruments and equipment can lead out heat energy in time in the high-temperature environment, so that normal operation is guaranteed. However, the addition of thermally conductive fillers changes the mica content, thereby causing a change in electrical properties.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a method for manufacturing aramid fiber mica paper, wherein a heat-conducting filler is added in the paper making process, so that the paper making efficiency of the mica paper is greatly improved on the basis of not changing the insulating property, the utilization rate of resources is improved, and the steps are simple and convenient; the invention also aims to provide the aramid fiber mica paper with high thermal conductivity, which greatly improves the thermal conductivity and tensile strength of the mica paper on the basis of not changing the insulating property.
One of the purposes of the invention is realized by adopting the following technical scheme:
a method for manufacturing heat-conducting aramid fiber mica paper comprises the following steps:
1) crushing the dolomitic master batch to obtain mica pulp sheets;
2) screening the mica pulp sheet obtained in the step 1);
3) carrying out high magnetic adsorption treatment on the screened mica pulp sheets, introducing the mica pulp sheets into a fine pulp tank, and adding water for dilution to obtain slurry;
4) dispersing a heat-conducting filler in water to obtain a heat-conducting filler dispersion liquid;
5) dispersing an aramid fiber material in water to obtain an aramid fiber material dispersion liquid;
6) placing the thin pulp obtained in the step 3), the heat-conducting filler obtained in the step 4) and the aramid fiber material dispersion liquid obtained in the step 5) into a paper machine for papermaking to obtain a semi-finished product;
7) and 6), drying the semi-finished product obtained in the step 6), cooling, performing calendaring, and finally coiling and cutting to obtain the heat-conducting aramid fiber mica paper. The cooling treatment is preferably: cooling at 30-40 deg.C for 1-2 min.
Further, in the step 1), the dolomite master batch is subjected to two times of crushing treatment, wherein the pressure of the first time of crushing treatment is 4.2-6.0 MPa, the time is 5-10 min, and the pressure of the second time of crushing treatment is 2.5-4.0 MPa, and the time is 3-5 min.
Still further, in step 2), the screening process is: firstly, swirling flow is carried out through a swirler, and then screening is carried out through a grading sieve; the cyclone pressure of the cyclone is 2-3 MPa, and the grading screen mesh number is 120-200 meshes.
Further, in the step 3), the mass ratio of the mica pulp sheet to water is 1:20 to 50.
Further, in the step 4), the heat-conducting filler is nano-grade Al2O3。
Further, in the step 4), the concentration of the heat-conducting filler in the heat-conducting filler dispersion liquid is 2-3%.
Further, in the step 5), the concentration of the aramid fiber material in the aramid fiber material dispersion liquid is 0.05-0.2%.
Further, in the step 6), the mass ratio of the heat-conducting filler in the heat-conducting filler dispersion liquid, the aramid fiber material in the aramid fiber material dispersion liquid and the mica pulp sheet in the slurry is 1:1: 15-20.
And further, in the step 6), the aramid fiber dispersion liquid and the thin pulp are mixed for papermaking, and then the heat-conducting filler dispersion liquid is added for papermaking.
The second purpose of the invention is realized by adopting the following technical scheme:
the aramid fiber mica paper is prepared by the manufacturing method of the aramid fiber mica paper.
Compared with the prior art, the invention has the beneficial effects that:
(1) compared with the prior conventional mica paper papermaking process, the manufacturing method of the invention has the improvement points that: and after the semi-finished product is dried, cooling. If the paper is not cooled, the temperature of the paper roll is high, and the temperature in the paper roll is reduced slowly, so that the flatness of the finished paper is affected. The aramid fiber material dispersion liquid and the heat-conducting filler dispersion liquid are added in the papermaking process, the aramid fiber material can improve the mechanical strength and the dielectric strength of the mica paper, the heat-conducting filler improves the heat-conducting property of the mica paper, so that the electrical strength of the aramid fiber mica paper with high heat conductivity is improved by 50%, the electrical property is stable, the excellent characteristics of common mica paper are maintained, and the heat-conducting effect is high.
(2) The aramid fiber mica paper keeps the characteristics of high temperature and high pressure resistance, insulation resistance and corona resistance of mica, and the aramid fiber and the mica are compounded, so that the mechanical property and the processability of the composite material can be improved, and the application field of the composite material is expanded; the mica and the aramid fiber have good electrical insulation performance at the same time, and the prepared insulation material combines the advantages of the mica and the aramid fiber and has better and more comprehensive insulation performance; the addition of the heat-conducting filler enhances the heat-conducting property of the mica paper, but does not influence the electrical property of the mica paper.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
A heat-conducting aramid fiber mica paper comprises an aramid fiber material, a heat-conducting filler and mica sheets. The aramid fiber is short for aromatic polypeptide amine fiber, mainly comprises para-aramid fiber and meta-aramid fiber, and the two main types are mainly characterized in that the connection positions of a phenol amine bond and a C atom on a benzene ring are different. The aramid fiber has extremely high strength, modulus and toughness, and has excellent insulating property and high temperature resistance. The heat-conducting filler is preferably alumina, so that the heat-conducting property of the mica paper can be improved.
Example 1
A method for manufacturing heat-conducting aramid fiber mica paper comprises the following steps:
1) manually selecting clean and impurity-free dolomite master batch, and crushing twice to obtain mica slurry sheets; the pressure of the first crushing is 6MPa, the crushing time is 10min, the pressure of the second crushing is 4MPa, and the time is 5 min; through the two crushing treatments, the large raw materials are crushed by high pressure, and then the pressure is reduced to perform scale stripping and layering without reducing the diameter of the scale, so that the diameter-thickness ratio of the scale is improved, the bonding area between the scales is increased, and the electrostatic attraction effect between the scales is increased.
2) Sequentially carrying out cyclone treatment and tertiary classifying screen screening treatment on the mica pulp sheet obtained in the step 1) by a tertiary cyclone; the cyclone pressure of the cyclone is 3MPa, and the grading mesh number is 120 meshes. The fine scales can be screened out through screening treatment, the large scales are reserved, and the void ratio is improved, so that the subsequent combination of mica pulp sheets, heat-conducting filler and aramid fiber materials is facilitated.
3) The mica pulp sheet after will sieving carries out the high magnetism through the magnetic force frame that a set of strong magnetic rod is constituteed and adsorbs the processing, later extracts to joining in marriage the thick liquid case from the seminal plasma pond to according to 1: adding water according to the mass ratio of 20 to dilute the fine slurry to obtain slurry;
4) dispersing a heat-conducting filler in water to obtain a heat-conducting filler dispersion liquid; the heat-conducting filler is nano-grade Al2O3(ii) a The concentration of the heat-conducting filler in the heat-conducting filler dispersion liquid is 2%;
5) dispersing an aramid fiber material in water to obtain an aramid fiber material dispersion liquid; the concentration of the aramid fiber material in the aramid fiber material dispersion liquid is 0.2%;
6) mixing the prepared aramid fiber mixed solution by 5m3The flow of the slurry is led into a slurry distribution box and is evenly mixed with the thin slurry, then the mixture is led into a wire groove of a paper machine to be made into mica paper, and the prepared heat-conducting filler mixed solution is mixed according to the proportion of 0.2m3The flow per hour is led into a mesh groove and added into the mica paper to obtain a semi-finished product;
the mass ratio of the heat-conducting filler in the heat-conducting filler dispersion liquid to the aramid fiber material in the aramid fiber material dispersion liquid to the mica pulp sheet in the slurry is 1:1: 18.
7) And 6) drying the semi-finished product obtained in the step 6) to keep the water content of the paper at 0.3%, cooling the paper for 1 minute at 40 ℃ through a cold cylinder, performing calendaring treatment through calendaring equipment, and finally coiling and cutting the paper to obtain the heat-conducting aramid fiber mica paper.
Example 2
A method for manufacturing heat-conducting aramid fiber mica paper comprises the following steps:
1) manually selecting clean and impurity-free dolomite master batch, and crushing twice to obtain mica slurry sheets; the pressure of the first crushing is 4.2MPa, and the time is 8 min; the second crushing pressure is 2.5MPa, and the time is 3 min; the two-time crushing treatment is beneficial to improving the diameter-thickness ratio of the scales, increasing the combination area between the scales and increasing the electrostatic attraction effect between the scales.
2) Sequentially carrying out cyclone treatment and tertiary classifying screen screening treatment on the mica pulp sheet obtained in the step 1) by a tertiary cyclone; the cyclone pressure of the cyclone is 3MPa, and the grading sieve mesh number is 200 meshes. The fine scales can be screened out through screening treatment, the large scales are reserved, and the void ratio is improved, so that the subsequent combination of mica pulp sheets, heat-conducting filler and aramid fiber materials is facilitated.
3) The mica pulp sheet after will sieving carries out the high magnetism through the magnetic force frame that a set of strong magnetic rod is constituteed and adsorbs the processing, later extracts to joining in marriage the thick liquid case from the seminal plasma pond to according to 1: adding water in a proportion of 50 to dilute the fine slurry to obtain a thin slurry;
4) dispersing a heat-conducting filler in water to obtain a heat-conducting filler dispersion liquid; the heat-conducting filler is nano-grade Al2O3(ii) a The concentration of the heat-conducting filler in the heat-conducting filler dispersion liquid is 3%;
5) dispersing an aramid fiber material in water to obtain an aramid fiber material dispersion liquid; the concentration of the aramid fiber material in the aramid fiber material dispersion liquid is 0.05%;
6) mixing the prepared aramid fiber mixed solution according to the proportion of 4m3Flow guiding and slurry distributing boxMixing with slurry, introducing into paper machine mesh tank, making into mica paper, and mixing the prepared heat conductive filler at a ratio of 0.1m3The flow of the flow per hour is led into a mesh groove, and mica paper is added to obtain a semi-finished product; the mass ratio of the heat-conducting filler in the heat-conducting filler dispersion liquid to the aramid fiber material in the aramid fiber material dispersion liquid to the mica pulp sheet in the slurry is 1:1: 15.
7) And 6) drying the semi-finished product obtained in the step 6 to keep the water content of the paper at 0.2%, cooling the paper for 2 minutes at 30 ℃ through a cold cylinder, performing calendaring treatment through calendaring equipment, and finally coiling and cutting the paper to obtain the heat-conducting aramid fiber mica paper.
Example 3
A method for manufacturing heat-conducting aramid fiber mica paper comprises the following steps:
1) manually selecting clean and impurity-free dolomite master batch, and crushing twice to obtain mica slurry sheets; the pressure of the first crushing is 6MPa, the time is 5min, the pressure of the second crushing is 2.5MPa, and the time is 4 min; the two-time crushing treatment is beneficial to improving the diameter-thickness ratio of the scales, increasing the combination area between the scales and increasing the electrostatic attraction effect between the scales.
2) Sequentially carrying out cyclone treatment and tertiary classifying screen screening treatment on the mica pulp sheet obtained in the step 1) by a tertiary cyclone; the cyclone pressure of the cyclone is 2MPa, and the grading mesh number is 120 meshes. The fine scales can be screened out through screening treatment, the large scales are reserved, and the void ratio is improved, so that the subsequent combination of mica pulp sheets, heat-conducting filler and aramid fiber materials is facilitated.
3) The mica pulp sheet after will sieving carries out the high magnetism through the magnetic force frame that a set of strong magnetic rod is constituteed and adsorbs the processing, later extracts to joining in marriage the thick liquid case from the seminal plasma pond to according to 1: adding water in a proportion of 30 to dilute the fine slurry to obtain a thin slurry;
4) dispersing a heat-conducting filler in water to obtain a heat-conducting filler dispersion liquid; the heat-conducting filler is nano-grade Al2O3(ii) a The concentration of the heat-conducting filler in the heat-conducting filler dispersion liquid is 3%;
5) dispersing an aramid fiber material in water to obtain an aramid fiber material dispersion liquid; the concentration of the aramid fiber material in the aramid fiber material dispersion liquid is 0.2%;
6) mixing the prepared aramid fiber mixed solution according to the proportion of 4m3The flow of the slurry is led into a slurry distribution box and is evenly mixed with the thin slurry, then the mixture is led into a wire groove of a paper machine to be made into mica paper, and the prepared heat-conducting filler mixed solution is mixed according to the proportion of 0.2m3H, guiding the mica paper into a mesh groove, and adding the mica paper into the mesh groove to obtain a semi-finished product; the mass ratio of the heat-conducting filler in the heat-conducting filler dispersion liquid to the aramid fiber material in the aramid fiber material dispersion liquid to the mica pulp sheet in the slurry is 1:1: 20.
7) And 6) drying the semi-finished product obtained in the step 6) to keep the water content of the paper at 0.1%, cooling the paper for 1 minute at 30 ℃ through a cold cylinder, performing calendaring treatment through calendaring equipment, and finally coiling and cutting the paper to obtain the heat-conducting aramid fiber mica paper.
Comparative example 1
Comparative example 1 differs from example 1 in that: comparative example 1 no thermally conductive filler was added.
Comparative example 2
Comparative example 2 differs from example 1 in that: in step 7) of comparative example 2, the semi-finished product was dried and then directly subjected to a calendering process without being subjected to a cooling process.
Performance testing
The basis weight of the finished paper of examples 1 to 3 and comparative examples 1 to 2 was 170g/m2. The mica papers of examples 1-3 and comparative examples 1-2 were tested for thermal conductivity, electrical properties, and tensile strength, as shown in table 1.
TABLE 1 mica paper test data for examples 1-3 and comparative examples 1-2
| Item | Thermal conductivity W/mK | Electric strength MV/m | Tensile strength N/cm |
| Example 1 | 0.62 | 28.194 | 5.4 |
| Example 2 | 0.59 | 29.487 | 5.5 |
| Example 3 | 0.57 | 29.647 | 5.3 |
| Comparative example 1 | 0.34 | 28.482 | 5.4 |
| Comparative example 2 | 0.51 | 27.158 | 4.6 |
As can be seen from Table 1, the mica papers of examples 1-3 have higher thermal conductivity than comparative example 1, which illustrates the addition of a thermally conductive filler (Al)2O3) The heat-conducting property of the mica paper can be improved; comparative example 2 did not undergo a cooling treatment after drying, affecting the flatness of the mica paper. Mica paper of examples 1 to 3The electrical property is stable, the tensile strength of the mica paper is improved by 60 percent compared with the prior common mica paper, and the mica paper can be used for producing ultra-long mica tapes and meet the technical requirements of materials required by the ultra-long insulating mica tapes in the market. The length of the insulating mica tape is increased from 1000 meters to 10000 meters. On the basis of not changing the insulating property, the papermaking efficiency of the mica paper is greatly improved, and the utilization rate of resources is improved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The manufacturing method of the heat-conducting aramid fiber mica paper is characterized by comprising the following steps of:
1) crushing the dolomitic master batch to obtain mica pulp sheets;
2) screening the mica pulp sheet obtained in the step 1);
3) carrying out high magnetic adsorption treatment on the screened mica pulp sheets, introducing the mica pulp sheets into a fine pulp tank, and adding water for dilution to obtain slurry;
4) dispersing a heat-conducting filler in water to obtain a heat-conducting filler dispersion liquid;
5) dispersing an aramid fiber material in water to obtain an aramid fiber material dispersion liquid;
6) placing the thin pulp obtained in the step 3), the heat-conducting filler obtained in the step 4) and the aramid fiber material dispersion liquid obtained in the step 5) into a paper machine for papermaking to obtain a semi-finished product;
7) and 6), drying the semi-finished product obtained in the step 6), cooling, performing calendaring, and finally coiling and cutting to obtain the heat-conducting aramid fiber mica paper.
2. The method for manufacturing the heat-conducting aramid fiber mica paper as claimed in claim 1, wherein in the step 1), the dolomitic masterbatch is subjected to two crushing treatments, wherein the pressure of the first crushing treatment is 4.2-6.0 MPa, and the pressure of the second crushing treatment is 2.5-4.0 MPa.
3. The method for manufacturing the heat-conducting aramid fiber mica paper according to claim 1, wherein in the step 2), the screening treatment is: firstly, swirling flow is carried out through a swirler, and then screening is carried out through a grading sieve; the cyclone pressure of the cyclone is 2-3 MPa, and the grading screen mesh number is 120-200 meshes.
4. The method for manufacturing the heat-conducting aramid fiber mica paper as claimed in claim 1, wherein in the step 3), the mass ratio of the mica pulp sheet to the water is 1:20 to 50.
5. The method for manufacturing the heat-conducting aramid fiber mica paper as claimed in claim 1, wherein in the step 4), the heat-conducting filler is nano-grade Al2O3。
6. The method for manufacturing the heat-conducting aramid fiber mica paper as claimed in claim 1, wherein in the step 4), the concentration of the heat-conducting filler in the heat-conducting filler dispersion liquid is 2-3%.
7. The method for manufacturing the heat-conducting aramid fiber mica paper as claimed in claim 1, wherein in the step 5), the concentration of the aramid fiber material in the aramid fiber material dispersion liquid is 0.05-0.2%.
8. The method for manufacturing the heat-conducting aramid fiber mica paper according to claim 1, wherein in the step 6), the mass ratio of the heat-conducting filler in the heat-conducting filler dispersion liquid, the aramid fiber material in the aramid fiber material dispersion liquid and the mica pulp sheet in the slurry is 1:1: 15-20.
9. The method for manufacturing the heat-conducting aramid fiber mica paper according to claim 1, wherein in the step 6), the aramid fiber dispersion liquid and the slurry are mixed to make paper, and the heat-conducting filler dispersion liquid is added to make paper.
10. A high thermal conductivity aramid fiber mica paper characterized by being prepared by the method for producing the high thermal conductivity aramid fiber mica paper according to any one of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050274774A1 (en) * | 2004-06-15 | 2005-12-15 | Smith James D | Insulation paper with high thermal conductivity materials |
| CN102926283A (en) * | 2012-10-26 | 2013-02-13 | 湖北平安电工材料有限公司 | Device and method for making aramid fiber mica paper |
| JP2016125185A (en) * | 2014-12-26 | 2016-07-11 | 特種東海製紙株式会社 | Insulation paper |
| CN106996053A (en) * | 2017-03-17 | 2017-08-01 | 湖北平安电工材料有限公司 | A kind of high heat conduction mica paper manufacture method |
| CN111549567A (en) * | 2020-05-13 | 2020-08-18 | 湖南睿达云母新材料有限公司 | Modified preparation method of high-thermal-conductivity mica paper |
| CN111945478A (en) * | 2020-08-10 | 2020-11-17 | 中国制浆造纸研究院衢州分院 | Preparation method of plasma treatment modified aramid fiber nano mica insulation paper |
-
2021
- 2021-10-29 CN CN202111271003.5A patent/CN114318938A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050274774A1 (en) * | 2004-06-15 | 2005-12-15 | Smith James D | Insulation paper with high thermal conductivity materials |
| CN102926283A (en) * | 2012-10-26 | 2013-02-13 | 湖北平安电工材料有限公司 | Device and method for making aramid fiber mica paper |
| JP2016125185A (en) * | 2014-12-26 | 2016-07-11 | 特種東海製紙株式会社 | Insulation paper |
| CN106996053A (en) * | 2017-03-17 | 2017-08-01 | 湖北平安电工材料有限公司 | A kind of high heat conduction mica paper manufacture method |
| CN111549567A (en) * | 2020-05-13 | 2020-08-18 | 湖南睿达云母新材料有限公司 | Modified preparation method of high-thermal-conductivity mica paper |
| CN111945478A (en) * | 2020-08-10 | 2020-11-17 | 中国制浆造纸研究院衢州分院 | Preparation method of plasma treatment modified aramid fiber nano mica insulation paper |
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