CN110117918B - Resin glue-sprayed mica paper and manufacturing method thereof - Google Patents
Resin glue-sprayed mica paper and manufacturing method thereof Download PDFInfo
- Publication number
- CN110117918B CN110117918B CN201910323347.2A CN201910323347A CN110117918B CN 110117918 B CN110117918 B CN 110117918B CN 201910323347 A CN201910323347 A CN 201910323347A CN 110117918 B CN110117918 B CN 110117918B
- Authority
- CN
- China
- Prior art keywords
- mica paper
- layer
- pulp sheet
- mica
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
- B32B19/06—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to a fibrous or filamentary layer
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/44—Flakes, e.g. mica, vermiculite
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/32—Multi-ply with materials applied between the sheets
Abstract
The invention discloses a resin glue-sprayed mica paper and a preparation method thereof, wherein the mica paper comprises a plurality of layers of mica paper with different particle size sheets, the surface of the inner fine pulp sheet mica paper is subjected to roughening and opening treatment, then a fiber reinforced layer is formed in an interlayer and is dried after hot pressing treatment, then a resin glue-sprayed layer is sprayed on the surface of the hot-pressed multi-layer fine pulp sheet mica paper, and a layer of coarse pulp sheet mica paper is coated and then is subjected to secondary hot pressing treatment to obtain the resin glue-sprayed mica paper. The mica paper can effectively solve the problem that the mica paper has low strength, has both electrical insulation and tensile strength, and keeps the advantages of puncture resistance, high insulation, heat insulation and the like of natural mica. In addition, the invention discloses a resin spray adhesive for preparing mica paper, which can be applied to the process for preparing the resin spray adhesive mica paper and effectively improve the dielectric strength and the mechanical strength of the resin spray adhesive mica paper.
Description
Technical Field
The invention relates to a mica paper preparation technology in the field of insulating materials, in particular to resin glue-sprayed mica paper and a manufacturing method thereof.
Background
Mica is a generic term for a class of aqueous aluminosilicates. The high-strength high-dielectric-loss high-strength high-voltage insulation material has the advantages of high electrical strength, low dielectric loss, high surface resistance and volume resistance, and has excellent properties of high insulation, corona resistance, acid and alkali resistance, radiation resistance, chemical stability, high elasticity, high stripping property, high shearing force resistance, high tensile strength and the like. In the prior art, mica paper with certain specific properties is one of the most extensive application approaches of mica at present, and the mica paper made from mica raw materials through pulping and papermaking usually has most properties of the corresponding products of sheet mica products, and is widely used as an insulating material in cables and large-scale electromechanical equipment in industry.
With the development of large motors in the direction of miniaturization, particularly wind power, nuclear power, high-speed rail traction motors and other equipment all require small motor size, high insulation strength, long service life, safety and reliability, so that higher requirements are provided for the size or certain physical and chemical properties of mica paper, and one of the main performance indexes is tensile and compression resistance and wear resistance. In the traditional mica paper preparation process, the mica has small diameter-thickness ratio of the scale in the mechanical pulping process, poor adhesion of the newly generated surface, difficult direct paper forming through a mica paper machine, poor tension after paper forming, difficult coiling, poor mechanical strength and toughness and difficult satisfaction of the increasing industrial production requirements; there are some products on the market which improve the physical structure of the mica paper by gluing structure, but the structural design is not reasonable, the physical performance of the products is obtained by sacrificing part of the electrical performance, and the manufacturability requirement of high insulation condition is difficult to meet.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a resin glue-sprayed mica paper and a manufacturing method thereof, so as to solve the defects in the technical background.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a resin glue-sprayed mica paper comprises a mica paper base layer, wherein the mica paper base layer comprises at least N mica paper single-sheet layers, N is more than or equal to 3, the mica paper single-sheet layers comprise a layer of coarse pulp sheet mica paper and N-1 layers of fine pulp sheet mica paper, a resin glue spraying layer is formed between the coarse pulp sheet mica paper and the fine pulp sheet mica paper, the two surfaces of N-2 pieces of fine pulp sheet mica paper close to the coarse pulp sheet mica paper in the fine pulp sheet mica paper are both rough surfaces, hollow holes distributed in an array mode are formed in the paper surface of the N-2 pieces of fine pulp sheet mica paper, a fiber reinforcing layer is formed between the adjacent fine pulp sheet mica paper, and the fiber reinforcing layer is formed by filling aramid fibers or a mixture of the aramid fibers and the acrylic fibers in a ratio of 1: 1-3: 1.
As a further limitation, the number of mica paper single sheets in the mica paper base layer is preferably 3 or 4, i.e., the value of N is preferably 3 or 4.
Further, the single-layer thickness of the coarse pulp sheet mica paper or the fine pulp sheet mica paper which is the single-layer mica paper single-layer is 30-50 μm.
The thickness of the resin spray glue layer is further limited to be 80-120 mu m.
By way of further limitation, the fiber reinforced layer is uniformly sprayed on the surface of the fine pulp sheet mica paper by means of pressure spraying and is formed by means of hot pressing.
The single-layer thickness of the fiber reinforced layer is 10-30 μm.
As a further limitation, the particle size of the mica scales pulped in the coarse pulp sheet mica paper is-7 meshes to +60 meshes.
As a further limitation, the particle size of the mica scales pulped in the fine pulp sheet mica paper is-50 meshes to +200 meshes.
The sum of the areas of the hollow holes in the unit area of the fine pulp sheet mica paper is 1/5-1/6 of the unit area of the fine pulp sheet mica paper.
By way of further limitation, the resin spray layer preferably adopts the following components in parts by mass for obtaining the best dielectric strength and mechanical strength:
80-120 parts of alkyd resin or epoxy resin
Quartz powder: 20 to 22 portions of
Silicon micropowder: 10 to 15 portions of
10-15 parts of polyethylene glycol dimethacrylate,
3-10 parts of diethylene glycol dibenzoate,
2-8 parts of phenolphthalein polyaryletherketone
4-6 parts of nano aluminum nitride
3-5 parts of vinyl benzene
Wherein, the alkyd resin is preferably long-oil alkyd resin with 60-70% of oil or fatty acid; the epoxy resin is preferably one of glycidyl ether epoxy resin, glycidyl ester epoxy resin or glycidyl amine epoxy resin.
The invention also discloses a papermaking method of the resin glue-sprayed mica paper, which comprises the following operation steps:
s1 selecting mica sheet raw material, washing with water, peeling, drying, calcining to obtain mica powder, sieving the mica powder, selecting mica powder with different particle sizes, pulping respectively, adding water to prepare mica pulp, and making into coarse pulp mica sheet paper and fine pulp mica sheet paper.
S2, grinding the fine pulp sheet mica paper on the surface at low speed by using a grinding wheel to obtain a rough surface, and then carrying out dot matrix hole opening treatment for later use.
S3, adding water into aramid fibers serving as a fiber reinforcing layer or a mixture of the aramid fibers and acrylic fibers in a ratio of 1: 1-3: 1 to prepare slurry with the concentration of 30-60%, and then adding the slurry into a pulp shooting machine to carry out pulp shooting treatment on the surface of the fine pulp sheet mica paper.
S4, after the single-layer fine pulp sheet mica paper is subjected to guniting, covering the surface of the second layer of fine pulp sheet mica paper until the last sheet of fine pulp sheet mica paper is covered on the surface of the second layer of fine pulp sheet mica paper, performing hot press molding, and drying.
S5, adding the resin glue spraying sizing material into a glue spraying machine, uniformly spraying the resin glue spraying sizing material on the surface of the multilayer fine pulp sheet mica paper subjected to the hot press molding in the step S4, then covering the surface of the glue spraying layer with coarse pulp sheet mica paper, and carrying out hot press molding again to obtain the finished product.
Has the advantages that: the resin glue-sprayed mica paper has high dielectric strength and strong tensile strength, can increase the dielectric strength and the tensile strength of the mica paper by adjusting the number of layers of the fine-pulp sheet mica paper according to requirements, solves the problem of low strength of the mica paper by combining resin glue stock and fiber materials, can effectively improve the tensile force of the mica paper, keeps the advantages of puncture resistance, high insulation, heat insulation and the like of natural mica, improves the dielectric strength and the overall performance of products, can be used for preparing electric wires and insulating tapes, can also be pressed into commutator mica plates with different thicknesses by lamination to be processed into stamping part, and is an ideal basic material for electric equipment such as a generator, a motor and the like.
Drawings
FIG. 1 shows an embodiment of a resin-coated mica paper according to a preferred embodiment of the present invention.
Wherein: 1. coarse pulp sheet mica paper; 2. spraying a glue layer with resin; 3. a first fine pulp sheet mica paper; 4. hollowing out holes; 5. a fiber reinforcement layer; 6. second fine pulp sheet mica paper.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
In the first example, in order to provide mica paper with good flexibility and thermal elasticity, a resin-sprayed mica paper as shown in fig. 1 was prepared by using a commercially available alkyd mica as a resin spray.
The preparation method comprises the steps of washing and stripping the mica sheet raw material, drying and calcining the raw material to obtain mica powder, sieving the mica powder, selecting the mica powder with different particle sizes to carry out pulping respectively, adding water to prepare mica slurry, and respectively making coarse pulp mica paper sheet 1 and fine pulp mica paper sheet for later use. Wherein, the particle diameter of the mica scales pulped in the coarse pulp sheet mica paper 1 is-7 meshes to +60 meshes, and the thickness is 50 mu m, while the particle diameter of the mica scales pulped in the fine pulp sheet mica paper is-50 meshes to +200 meshes, and the thickness is 30 mu m.
And (3) grinding part of the fine pulp sheet mica paper on the surface at a low speed by using a grinding wheel, roughening the surface to form a rough surface, punching dot matrix holes to serve as the hollowed holes 4, and adjusting the aperture and the hole interval of the single hole of the punching machine to enable the sum of the areas of the hollowed holes 4 to be 1/5 of the unit area of the fine pulp sheet mica paper, so that the raw material of the first fine pulp sheet mica paper 3 is obtained.
The aramid fiber serving as the fiber reinforcement layer 5 is added with water to prepare slurry with the concentration of 60%, the slurry is uniformly sprayed on the surface of the first fine pulp sheet mica paper 3 in a pressurizing and spraying mode, the spraying amount is controlled, then the surface of the first fine pulp sheet mica paper 3 is covered with fine pulp sheet mica paper without polishing and punching treatment to serve as second fine pulp sheet mica paper 6, hot-pressing compounding is carried out on the surface of the first fine pulp sheet mica paper 3 at the temperature of 175 ℃ through a 30-ton press and keeping for 24 hours, then excess moisture is dried, and the single-layer thickness of the molded fiber reinforcement layer 5 is ensured to be 10-30 mu m.
And then spraying alkyd mica glue on the surface of the first fine-pulp sheet mica paper 3 to serve as a resin glue spraying layer 2, controlling the spraying amount, uniformly spraying the alkyd mica glue on the surface of the first fine-pulp sheet mica paper 3, then covering the surface of the resin glue spraying layer 2 with the coarse-pulp sheet mica paper 1, performing hot-pressing compounding on the surface of the coarse-pulp sheet mica paper 1 at the temperature of 175 ℃ by using a 30-ton press, keeping for 60 hours, and forming to obtain the resin glue spraying mica paper, wherein the thickness of the formed resin glue spraying layer 2 is 100 micrometers.
Ten square paper pieces with the length and the width of 30cm are randomly cut from a finished product paper roll with the length of 100m to be used as experimental sample paper, the measured dielectric strength range is 19-21.5 KV/mm, the average dielectric strength is 21.3KV/mm, the tensile strength range is 7.9-8.6N/cm, and the average tensile strength is 8.3N/cm, wherein the difference between the dielectric strength and the commercially available mica paper is not large, but the tensile strength is more than 15% of the commercially available mica paper.
In the second embodiment, in order to make the mica paper have better dielectric strength and mechanical strength than the first embodiment under the same structural characteristics, the second embodiment uses the specially made resin spray as the raw material to mold the resin spray layer 2 to prepare the resin spray mica paper.
The resin spray glue comprises: 100 parts by mass of long-oil alkyd resin with oil or fatty acid content of 60-70%, 21 parts by mass of quartz powder, 13 parts by mass of silicon micropowder, 12 parts by mass of polyethylene glycol dimethacrylate, 7 parts by mass of diethylene glycol dibenzoate, 6 parts by mass of phenolphthalein polyaryletherketone, 5 parts by mass of nano aluminum nitride and 4 parts by mass of vinyl benzene, and 1 part by mass of defoaming agent, 0.7 part by mass of leveling agent and 1.5 parts by mass of wetting dispersant are added.
The preparation method comprises the steps of washing and stripping the mica sheet raw material, drying and calcining the raw material to obtain mica powder, sieving the mica powder, selecting the mica powder with different particle sizes to carry out pulping respectively, adding water to prepare mica slurry, and respectively making coarse pulp mica paper sheet 1 and fine pulp mica paper sheet for later use. Wherein, the particle diameter of the mica scales pulped in the coarse pulp sheet mica paper 1 is-7 meshes to +60 meshes, and the thickness is 50 mu m, while the particle diameter of the mica scales pulped in the fine pulp sheet mica paper is-50 meshes to +200 meshes, and the thickness is 30 mu m.
And (3) grinding part of the fine pulp sheet mica paper on the surface at a low speed by using a grinding wheel, roughening the surface to form a rough surface, punching dot matrix holes to serve as the hollowed holes 4, and adjusting the aperture and the hole interval of the single hole of the punching machine to enable the sum of the areas of the hollowed holes 4 to be 1/6 of the unit area of the fine pulp sheet mica paper, so that the raw material of the first fine pulp sheet mica paper 3 is obtained.
Adding water into a mixture of aramid fibers and acrylic fibers which are used as a fiber reinforcing layer 5 in a ratio of 1: 1-3: 1 to prepare slurry with the concentration of 40%, uniformly spraying the slurry on the surface of first fine pulp sheet mica paper 3 in a pressurized spraying mode, controlling the spraying amount, covering the surface of the first fine pulp sheet mica paper 3 with fine pulp sheet mica paper which is not polished and punched to be used as second fine pulp sheet mica paper 6, performing hot-pressing compounding on the surface of the first fine pulp sheet mica paper at the temperature of 170 ℃ by a 30-ton press, keeping the temperature for 30 hours, and drying excessive water to ensure that the single-layer thickness of the molded fiber reinforcing layer 5 is 10-30 mu m.
And then spraying the resin spray glue on the surface of the first fine pulp sheet mica paper 3 to serve as a resin spray glue layer 2, controlling the spraying amount, uniformly spraying the resin spray glue on the surface of the first fine pulp sheet mica paper 3, then covering the surface of the resin spray glue layer 2 with the coarse pulp sheet mica paper 1, performing hot-pressing compounding on the surface of the coarse pulp sheet mica paper 1 at the temperature of 170 ℃ by using a 30-ton press again, keeping for 72 hours, and obtaining the resin spray glue mica paper after molding, wherein the thickness of the molded resin spray glue layer 2 is 100 mu m.
Ten square paper pieces with the length and the width of 30cm are randomly cut from a finished product paper roll with the length of 100m to be used as experimental sample paper, and the measured dielectric strength range is 20-24 KV/mm, the average dielectric strength is 22.7KV/mm, the tensile strength range is 8.3-9.4N/cm, the average tensile strength is 8.7N/cm, and the tensile strength is more than 20% of that of the mica paper sold on the market.
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 resin glue-sprayed mica paper is characterized by comprising a mica paper base layer, wherein the mica paper base layer comprises at least N mica paper single-sheet layers, N is more than or equal to 3, the mica paper single-sheet layers comprise a layer of coarse pulp sheet mica paper and N-1 layers of fine pulp sheet mica paper, a resin glue-spraying layer is formed between the coarse pulp sheet mica paper and the fine pulp sheet mica paper, and the glue material in the resin glue-spraying layer comprises the following components in parts by mass:
80-120 parts of alkyd resin or epoxy resin
Quartz powder: 20 to 22 portions of
Silicon micropowder: 10 to 15 portions of
10-15 parts of polyethylene glycol dimethacrylate
3-10 parts of diethylene glycol dibenzoate
2-8 parts of phenolphthalein polyaryletherketone
4-6 parts of nano aluminum nitride
3-5 parts of vinyl benzene;
wherein the alkyd resin is long-oil alkyd resin with oil or fatty acid content of 60-70%; the epoxy resin is one of glycidyl ether epoxy resin, glycidyl ester epoxy resin or glycidyl amine epoxy resin;
the two surfaces of N-2 pieces of fine pulp sheet mica paper close to the side of the coarse pulp sheet mica paper in the fine pulp sheet mica paper are rough surfaces, hollow holes distributed in an array mode are formed in the paper surface of the N-2 pieces of fine pulp sheet mica paper, a fiber reinforced layer is formed between every two adjacent pieces of fine pulp sheet mica paper, and the fiber reinforced layer is formed by filling aramid fibers or a mixture of 1: 1-3: 1 of the aramid fibers and acrylic fibers.
2. The resin-coated mica paper according to claim 1, wherein the number of the mica paper single sheets in the mica paper base layer is three or four.
3. The resin-sprayed mica paper according to claim 1, wherein a single-layer thickness of coarse pulp sheet mica paper or fine pulp sheet mica paper as a single-layer mica paper single-layer is 30 to 50 μm.
4. The resin-sprayed mica paper according to claim 1, wherein the thickness of the resin-sprayed layer is 80 to 120 μm.
5. The resin-sprayed mica paper of claim 1, wherein the fiber-reinforced layer is uniformly sprayed on the surface of the fine pulp sheet mica paper by means of pressure spraying, and then is formed by means of hot pressing.
6. The resin-sprayed mica paper of claim 1, wherein the thickness of the single layer of the fiber-reinforced layer is 10 to 30 μm.
7. A method for making resin glue-sprayed mica paper, which is used for preparing the resin glue-sprayed mica paper as claimed in any one of claims 1 to 6, and is characterized by comprising the following operation steps:
s1 selecting a mica sheet raw material, washing and stripping, drying and calcining the raw material to obtain mica powder, sieving the mica powder, selecting the mica powder with different particle sizes to pulp respectively, adding water to prepare mica slurry, and pulping into coarse pulp mica sheet paper and fine pulp mica sheet paper respectively;
s2, grinding the fine pulp sheet mica paper on the surface at low speed by using a grinding wheel to obtain a rough surface, and then carrying out dot matrix hole opening treatment for later use;
s3, adding water into aramid fibers serving as a fiber reinforcing layer or a mixture of the aramid fibers and acrylic fibers in a ratio of 1: 1-3: 1 to prepare slurry with the concentration of 30-60%, and then adding the slurry into a pulp spraying machine to carry out pulp spraying treatment on the surface of the fine pulp sheet mica paper;
s4, after the single-layer fine pulp sheet mica paper is subjected to guniting, covering the surface of the second layer of fine pulp sheet mica paper until the last sheet of fine pulp sheet mica paper is covered on the surface of the second layer of fine pulp sheet mica paper, performing hot press molding, and drying;
s5, adding the resin glue spraying sizing material into a glue spraying machine, uniformly spraying the resin glue spraying sizing material on the surface of the multilayer fine pulp sheet mica paper subjected to the hot press molding in the step S4, then covering the surface of the glue spraying layer with coarse pulp sheet mica paper, and carrying out hot press molding again to obtain the finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323347.2A CN110117918B (en) | 2019-04-22 | 2019-04-22 | Resin glue-sprayed mica paper and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323347.2A CN110117918B (en) | 2019-04-22 | 2019-04-22 | Resin glue-sprayed mica paper and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110117918A CN110117918A (en) | 2019-08-13 |
| CN110117918B true CN110117918B (en) | 2021-09-24 |
Family
ID=67521331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910323347.2A Active CN110117918B (en) | 2019-04-22 | 2019-04-22 | Resin glue-sprayed mica paper and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110117918B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023232238A1 (en) * | 2022-05-31 | 2023-12-07 | Ceres Intellectual Property Company Limited | Mica multilayer plate |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501401B (en) * | 2020-04-10 | 2022-04-19 | 北京倚天凌云科技股份有限公司 | Resin composite insulation mica paper and preparation method thereof |
| CN111485456B (en) * | 2020-04-25 | 2022-04-29 | 霸州市卓源云母科技有限公司 | High-strength composite mica paper and preparation method thereof |
| CN111364280A (en) * | 2020-04-25 | 2020-07-03 | 霸州市卓源云母科技有限公司 | Mica membrane and preparation method thereof |
| 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 |
| CN111560794B (en) * | 2020-05-13 | 2022-04-08 | 湖南睿达云母新材料有限公司 | Bending-resistant composite mica paper tape and preparation method thereof |
| CN111976038A (en) * | 2020-06-30 | 2020-11-24 | 湖北平安电工股份有限公司 | Hot die pressing production method of mica special-shaped piece |
| CN113674894A (en) * | 2021-08-17 | 2021-11-19 | 固德电材系统（苏州）股份有限公司 | Mica material with high surface cleanliness as well as preparation method and application thereof |
| CN114703700B (en) * | 2022-04-11 | 2023-04-11 | 湖南荣泰新材料科技有限公司 | Uniform papermaking method of high-gram-weight mica paper |
| CN114717879B (en) * | 2022-04-11 | 2023-04-07 | 湖南荣泰新材料科技有限公司 | Preparation method of high-thermal-conductivity mica paper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412041A (en) * | 2011-10-27 | 2012-04-11 | 苏州巨峰电气绝缘系统股份有限公司 | Preparation method of high-permeability mica tape |
| CN103757977A (en) * | 2014-01-02 | 2014-04-30 | 雅安兴美云母工业有限责任公司 | Inorganic powder mica paper and preparation method and use thereof |
| CN106320098A (en) * | 2016-09-07 | 2017-01-11 | 芜湖桑乐金电子科技有限公司 | Resin composite mica paper and preparation method thereof |
| CN206451552U (en) * | 2017-02-07 | 2017-08-29 | 平江县湘北绝缘材料有限公司 | A kind of MULTILAYER COMPOSITE mica paper |
| CN208111202U (en) * | 2018-02-07 | 2018-11-16 | 平江县兴科云母制品有限公司 | A kind of high-strength composite mica paper |
-
2019
- 2019-04-22 CN CN201910323347.2A patent/CN110117918B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412041A (en) * | 2011-10-27 | 2012-04-11 | 苏州巨峰电气绝缘系统股份有限公司 | Preparation method of high-permeability mica tape |
| CN103757977A (en) * | 2014-01-02 | 2014-04-30 | 雅安兴美云母工业有限责任公司 | Inorganic powder mica paper and preparation method and use thereof |
| CN106320098A (en) * | 2016-09-07 | 2017-01-11 | 芜湖桑乐金电子科技有限公司 | Resin composite mica paper and preparation method thereof |
| CN206451552U (en) * | 2017-02-07 | 2017-08-29 | 平江县湘北绝缘材料有限公司 | A kind of MULTILAYER COMPOSITE mica paper |
| CN208111202U (en) * | 2018-02-07 | 2018-11-16 | 平江县兴科云母制品有限公司 | A kind of high-strength composite mica paper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023232238A1 (en) * | 2022-05-31 | 2023-12-07 | Ceres Intellectual Property Company Limited | Mica multilayer plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110117918A (en) | 2019-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110117918B (en) | Resin glue-sprayed mica paper and manufacturing method thereof | |
| KR101846474B1 (en) | Electrically conductive sheet and process for producing same, and electronic component | |
| CN101211677A (en) | Single-side reinforced small amount epoxy glue mica tape and method of manufacture and its uses | |
| CN111485456B (en) | High-strength composite mica paper and preparation method thereof | |
| CN110970184A (en) | Mica tape preparation method | |
| CN111501417A (en) | Preparation method of mica paperboard | |
| US4456657A (en) | Metal-clad laminate adapted for printed circuits | |
| CN101211678A (en) | Single-side reinforced mediate amount epoxy glue mica tape and method of manufacture and its uses | |
| CN109015954B (en) | Method for improving weather resistance and mechanical property of bamboo plywood | |
| CN107379705A (en) | Laminated film | |
| CN202543607U (en) | Online carbon-fiber gumming production line | |
| CN102503182B (en) | Online gluing production line for carbon (glass) fibers | |
| CN106785418A (en) | A kind of fiberglass radome and preparation method thereof | |
| JPS6136329B2 (en) | ||
| CN207939834U (en) | A kind of prepreg | |
| CN110154485A (en) | A kind of insulating paper of transformer | |
| CN207895872U (en) | A kind of communication cable containing polymer overmold and carbon fiber reinforcement quantum core | |
| CN114801336B (en) | Wave-absorbing honeycomb capable of preventing surface cracking and preparation method thereof | |
| CN207651290U (en) | A kind of insulation shell for electric power electric transformer | |
| JP3756674B2 (en) | Magnetic steel sheet for laminated adhesive cores with stable adhesive strength | |
| CN110605770A (en) | Fiber-woven bamboo material and rubber-coiled combined sleeper material | |
| CN203423043U (en) | High-strength rectangular inner winding supporting framework | |
| CN218948633U (en) | Mica composite board structure | |
| CN115819921B (en) | Preparation method and application of interface modified aramid fiber/epoxy resin composite material | |
| CN115748305B (en) | Method for preparing reinforced mica paper product by stacking mica tapes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |