CN102532605A - Corona-resistant slurry and preparation method thereof - Google Patents
Corona-resistant slurry and preparation method thereof Download PDFInfo
- Publication number
- CN102532605A CN102532605A CN2011104269263A CN201110426926A CN102532605A CN 102532605 A CN102532605 A CN 102532605A CN 2011104269263 A CN2011104269263 A CN 2011104269263A CN 201110426926 A CN201110426926 A CN 201110426926A CN 102532605 A CN102532605 A CN 102532605A
- Authority
- CN
- China
- Prior art keywords
- corona
- slurry
- aluminium oxide
- nano aluminium
- type nano
- 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.)
- Granted
Links
Abstract
The invention discloses corona-resistant slurry and a preparation method thereof. The corona-resistant slurry is composed of alpha type nanometer aluminum oxide, a silane coupling agent and a solvent, wherein the weight percentage of the alpha type nanometer aluminum oxide in the slurry is 3-15%, and the weight percentage of the silane coupling agent relative to the alpha type nanometer aluminum oxide is 0.05-5%. Compared with other crystal type nanometer aluminum oxide slurry with the same content, the corona-resistant slurry can improve corona-resistant performance by 10-20 times when being applied to a corona-resistant polyimide film.
Description
Technical field
The present invention relates to a kind of slurry of anti-corona the and preparation method thereof.
Background technology
The existing nano aluminium oxide dispersion liquid that is used for the product of anti-the corona contains nano aluminium oxide, solvent and silane coupling agent usually; Like publication number is the patent of invention of CN101362859; A kind of stable nanometer oxidate dispersion solution is disclosed; It comprises the component of following weight percent: nano-scale oxide 10～20%, N,N-DIMETHYLACETAMIDE 40～60%, polyamic acid salt 20～40%, Ethoxysilane 0.1～1%, nano-scale oxide wherein are nano level titanium oxide, silicon oxide, red stone, aluminum oxide, Natural manganese dioxide, zinc oxide, quicklime, cupric oxide, barium oxide, silver suboxide, boron oxide, strontium oxide or Cadmium oxide.When nano-scale oxide was nano-titanium oxide, the anti-corona of obtained corona-resistant polyimide film was greatly increased than general thin in this invention.This application and unexposed employing nano aluminium oxide are the performance of the corona-resistant polyimide film for preparing of nano-scale oxide, also the particle diameter and the crystal formation of nano aluminium oxide are not described.Publication number is the patent of invention of CN101400435A; Through being dispersed in 1 to nano aluminium oxide; In the mixed solvent of 2-glycol and phenol or acid amides, can make the dispersion-s of good dispersivity, but data such as the crystal formation of this patent and unexposed anti-corona time and aluminum oxide, particle diameter.And for example publication number is the Chinese invention patent of CN102020850A; A kind of composition and method of making the same of anti-the corona is disclosed; Described compsn contains 70～95% polyimide, 5～30% nano aluminium oxides, 0.01～0.3% silane coupling agent and 0.005～0.3% polyester modification acrylate block copolymer dispersion agent, forms 25 microns anti-corona times of film greater than 100,000 hours.It is dispersed that this invention utilizes dispersion agent and coupling agent to increase aluminum oxide, thereby improve corona resistance and mechanical property, but the corona-resistance property raising is not obvious.
Summary of the invention
The technical problem that the present invention will solve provides a kind of slurry of anti-corona the and preparation method thereof.Adopt Kapton that the slurry of anti-corona the of the present invention and polyamic acid resin solution mixing system get to improve 10～20 times than the corona resistance of general thin.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of slurry of anti-the corona; It is characterized in that: it is by α type nano aluminium oxide, silane coupling agent and solvent composition; Wherein, the weight percent of α type nano aluminium oxide in slurry is 3～15%, and silane coupling agent is 0.05～5% with respect to the weight percent of α type nano aluminium oxide.
In the technique scheme,
The particle diameter of said α type nano aluminium oxide is 150～300nm, preferred 200～250nm.
The weight percent of said α type nano aluminium oxide in slurry is preferably 5～10%.
Described silane coupling agent is preferably 0.1～1% with respect to the weight percent of α type nano aluminium oxide.
Described silane coupling agent is for being selected from one or more the combination in γ-glycidoxypropyltrime,hoxysilane, γ-glycidoxy propyl group methyldiethoxysilane, N-(2-aminoethyl-3-aminopropyl) methyl dimethoxysilane, n-octyltri-ethoxysilane, γ-An Jibingjisanyiyangjiguiwan, N-β (amino-ethyl) gamma-amino propyl trimethoxy silicane and N-β (amino-ethyl) the gamma-amino propyl group methyl dimethoxysilane.Preferably adopt n-octyltri-ethoxysilane, γ-glycidoxypropyltrime,hoxysilane or N-β (amino-ethyl) gamma-amino propyl group methyl dimethoxysilane.
Described solvent is N-Methyl pyrrolidone (NMP), N,N-DIMETHYLACETAMIDE (DMAc), N (DMF) or gamma-butyrolactone.Be preferably N,N-DIMETHYLACETAMIDE (DMAc).
The preparation method of the above-mentioned slurry of anti-the corona is: the silane coupling agent that in the solvent of formula ratio, adds formula ratio; Stir the α type nano aluminium oxide that adds formula ratio after 10～30 minutes; Pre-dispersed 10～60 minutes then through the high pressure shears, and then high-pressure homogeneous, promptly obtain the slurry of anti-the corona.Wherein, the described pre-dispersed time is preferably 20～40 minutes, and described homogeneous carries out in high pressure homogenizer usually, and the time of homogeneous is generally 3～8 minutes.
Compared with prior art; Nano-oxide in the slurry of the present invention is the α type nano aluminium oxide of special crystal formation; It and the common slurry of anti-corona good dispersivity of forming of silane coupling agent and solvent; Compare with other crystal type nano alumina slurry of same amount, when being applied to corona-resistant polyimide film, its corona-resistance property can improve 10～20 times.
Embodiment
With specific embodiment the present invention is described further below, but the present invention is not limited to these embodiment.
Embodiment 1
Take by weighing the N of 1500g; The N-N,N-DIMETHYLACETAMIDE stirs adding 0.50g n-octyltri-ethoxysilane down as solvent, continues to stir 15 minutes; Slowly add 50g α type nano aluminium oxide (particle diameter is 150nm) then; With the high-shear machine pre-dispersed 40 minutes, further disperseed 5 minutes with high pressure homogenizer then, promptly make the slurry of anti-corona of good dispersibility.
Embodiment 2
Take by weighing the N of 1500g; The N-N,N-DIMETHYLACETAMIDE stirs adding 0.16g γ-An Jibingjisanyiyangjiguiwan down as solvent, continues to stir 20 minutes; Slowly add 80g α type nano aluminium oxide (particle diameter is 220nm) then; With the high-shear machine pre-dispersed 10 minutes, further disperseed 5 minutes with high pressure homogenizer then, promptly make the slurry of anti-corona of good dispersibility.
Embodiment 3
Take by weighing the N of 1500g; The N-N,N-DIMETHYLACETAMIDE stirs adding 0.08g N-β (amino-ethyl) gamma-amino propyl group methyl dimethoxysilane down as solvent, continues to stir 30 minutes; Slowly add 130g α type nano aluminium oxide (particle diameter is 200nm) then; With the high-shear machine pre-dispersed 60 minutes, further disperseed 5 minutes with high pressure homogenizer then, promptly make the slurry of anti-corona of good dispersibility.
Embodiment 4
Take by weighing the N of 1500g; The N-N,N-DIMETHYLACETAMIDE stirs adding 1.00g γ-glycidoxypropyltrime,hoxysilane down as solvent, continues to stir 20 minutes; Slowly add 150g α type nano aluminium oxide (particle diameter is 250nm) then; With the high-shear machine pre-dispersed 30 minutes, further disperseed 5 minutes with high pressure homogenizer then, promptly make the slurry of anti-corona of good dispersibility.
Embodiment 5
Take by weighing the N of 1500g; The N-N,N-DIMETHYLACETAMIDE stirs adding 7.00g gamma-amino propyl group methyl dimethoxysilane down as solvent, continues to stir 30 minutes; Slowly add 200g α type nano aluminium oxide (particle diameter is 180nm) then; With the high-shear machine pre-dispersed 50 minutes, further disperseed 5 minutes with high pressure homogenizer then, promptly make the slurry of anti-corona of good dispersibility.
Embodiment 6
Take by weighing the N of 1500g; The N-N,N-DIMETHYLACETAMIDE stirs adding 0.30g N-β (amino-ethyl) gamma-amino propyl group methyl dimethoxysilane down as solvent, continues to stir 10 minutes; Slowly add 220g α type nano aluminium oxide (particle diameter is 300nm) then; With the high-shear machine pre-dispersed 20 minutes, further disperseed 5 minutes with high pressure homogenizer then, promptly make the slurry of anti-corona of good dispersibility.
Comparative Examples:
Take by weighing the N of 1500g; The N-N,N-DIMETHYLACETAMIDE stirs adding 0.50g n-octyltri-ethoxysilane down as solvent, continues to stir 15 minutes; (particle diameter is 50nm slowly to add the 50g nano aluminium oxide then;) with the high-shear machine pre-dispersed 40 minutes, further disperseed 5 minutes with high pressure homogenizer then, make the slurry of anti-the corona.
Preparation film sample 1:
In the slurry of anti-corona that embodiment 1 makes, add 150g 4; 4 '-amino-diphenylethers; After dissolving finished, the pyromellitic acid anhydride that adds formula ratio was again regulated viscosity, and the viscosity that makes final gained polyamic acid solution is 5.5 ten thousand centipoises; Vacuumize after froth breaking finishes, press common process hydrostomia, stretching and imidization system film.The thickness of gained film sample 1 is 25 microns, and wherein the α type nano aluminium oxide ratio that accounts for whole film weight is about 14%, surveys its anti-corona time, and data are as shown in table 1 below.
Preparation film sample 2:
In the slurry of anti-corona that embodiment 2 makes, add 245g 4; 4 '-amino-diphenylethers; After dissolving finished, the pyromellitic acid anhydride that adds formula ratio was again regulated viscosity, and the viscosity that makes final gained polyamic acid solution is 4.5 ten thousand centipoises; Vacuumize after froth breaking finishes, press common process hydrostomia, stretching and imidization system film.The thickness of gained film sample 2 is 25 microns, and wherein the α type nano aluminium oxide ratio that accounts for whole film weight is about 14%, surveys its anti-corona time, and data are as shown in table 1 below.
Preparation film sample 3:
In the slurry of anti-corona that embodiment 3 makes, add 400g 4; 4 '-amino-diphenylethers; After dissolving finished, the pyromellitic acid anhydride that adds formula ratio was again regulated viscosity, and the viscosity that makes final gained polyamic acid solution is 5.0 ten thousand centipoises; Vacuumize after froth breaking finishes, press common process hydrostomia, stretching and imidization system film.The thickness of gained film sample 3 is 25 microns, and wherein the α type nano aluminium oxide ratio that accounts for whole film weight is about 14%, surveys its anti-corona time, and data are as shown in table 1 below.
Preparation film sample 4:
The slurry of anti-corona that embodiment 4 is made (consists of 4 with polyamic acid resin solution; 4 '-amino-diphenylethers/pyromellitic acid anhydride) mix by 3: 1 weight ratios; Obtaining viscosity is the polyamic acid compound resin of 50,000 centipoises; Vacuumize after froth breaking finishes, press common process hydrostomia, stretching and imidization system film.The thickness of gained film sample 4 is 25 microns, and wherein the α type nano aluminium oxide ratio that accounts for whole film weight is about 14%, surveys its anti-corona time, and data are as shown in table 1 below.
Preparation film sample 5:
The slurry of anti-corona that embodiment 5 is made (consists of 4 with polyamic acid resin solution; 4 '-amino-diphenylethers/pyromellitic acid anhydride) mix by 3: 1 weight ratios; Obtaining viscosity is the polyamic acid compound resin of 5.5 ten thousand centipoises; Vacuumize after froth breaking finishes, press common process hydrostomia, stretching and imidization system film.The thickness of gained film sample 5 is 25 microns, and wherein the α type nano aluminium oxide ratio that accounts for whole film weight is about 14%, surveys its anti-corona time, and data are as shown in table 1 below.
Preparation film sample 6
The slurry of anti-corona that embodiment 6 is made (consists of 4 with polyamic acid resin solution; 4 '-amino-diphenylethers/pyromellitic acid anhydride) mix by 3: 1 weight ratios; Obtaining viscosity is the polyamic acid compound resin of 50,000 centipoises; Vacuumize after froth breaking finishes, press common process hydrostomia, stretching and imidization system film.The thickness of gained film sample 6 is 25 microns, and wherein the nano aluminium oxide ratio that accounts for whole film weight is about 14%, surveys its anti-corona time, and data are as shown in table 1 below.
Preparation film sample 7:
In the nano oxidized aluminum slurry that Comparative Examples makes, add 150g 4; 4 '-amino-diphenylethers; After dissolving finished, the pyromellitic acid anhydride that adds formula ratio was again regulated viscosity, and the viscosity that makes final gained polyamic acid solution is 5.5 ten thousand centipoises; Vacuumize after froth breaking finishes, press common process hydrostomia, stretching and imidization system film.The thickness of gained film sample 7 is 25 microns, and wherein the nano aluminium oxide ratio that accounts for whole film weight is about 14%, surveys its anti-corona time, and data are as shown in table 1 below.
Anti-corona test condition:
Trial voltage 2KV, frequency is 20KHz, and be 100ns rise time of a pulse, and pulse waveform is a square wave, and polarity is bipolar, and test electrode is that diameter is the stainless steel electrode of 6mm, and according to test result, getting its intermediate value is test result.
Claims (8)
1. slurry of anti-the corona; It is characterized in that: it is by α type nano aluminium oxide, silane coupling agent and solvent composition; Wherein, the weight percent of α type nano aluminium oxide in slurry is 3～15%, and silane coupling agent is 0.05～5% with respect to the weight percent of α type nano aluminium oxide.
2. the slurry of anti-corona the according to claim 1 is characterized in that: the particle diameter of said α type nano aluminium oxide is 150～300nm.
3. the slurry of anti-corona the according to claim 1 is characterized in that: the weight percent of said α type nano aluminium oxide in slurry is 5～10%.
4. the slurry of anti-corona the according to claim 1 is characterized in that: described silane coupling agent is 0.1～1% with respect to the weight percent of α type nano aluminium oxide.
5. according to claim 1, the 2 or 3 described slurries of anti-the corona, it is characterized in that: described silane coupling agent is for being selected from one or more the combination in γ-glycidoxypropyltrime,hoxysilane, γ-glycidoxy propyl group methyldiethoxysilane, N-(2-aminoethyl-3-aminopropyl) methyl dimethoxysilane, n-octyltri-ethoxysilane, γ-An Jibingjisanyiyangjiguiwan, N-β (amino-ethyl) gamma-amino propyl trimethoxy silicane and N-β (amino-ethyl) the gamma-amino propyl group methyl dimethoxysilane.
6. according to claim 1, the 2 or 3 described slurries of anti-the corona, it is characterized in that: described solvent is N-Methyl pyrrolidone, N,N-DIMETHYLACETAMIDE, N or gamma-butyrolactone.
7. the preparation method of the described slurry of anti-corona of claim 1; It is characterized in that: the silane coupling agent that in the solvent of formula ratio, adds formula ratio; Stir the α type nano aluminium oxide that adds formula ratio after 10～30 minutes; Through the high pressure shears pre-dispersed 10～60 minutes then, homogeneous promptly obtained the slurry of anti-the corona.
8. the preparation method of the slurry of anti-corona the according to claim 7 is characterized in that: the described pre-dispersed time is 20～40 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104269263A CN102532605B (en) | 2011-12-19 | 2011-12-19 | Corona-resistant slurry and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104269263A CN102532605B (en) | 2011-12-19 | 2011-12-19 | Corona-resistant slurry and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102532605A true CN102532605A (en) | 2012-07-04 |
| CN102532605B CN102532605B (en) | 2013-08-14 |
Family
ID=46340727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104269263A Active CN102532605B (en) | 2011-12-19 | 2011-12-19 | Corona-resistant slurry and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102532605B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646491A (en) * | 2020-06-09 | 2020-09-11 | 湖南科技大学 | Dispersion liquid for dispersing nano particles in corona-resistant paint, preparation method and application thereof, and application of stable nano particle dispersion liquid |
| CN112300785A (en) * | 2020-10-28 | 2021-02-02 | 陕西彩虹新材料有限公司 | Preparation method of fluorescent slurry |
| CN115873307A (en) * | 2021-09-28 | 2023-03-31 | 国网湖南省电力有限公司 | Modified nano alumina particle and preparation method thereof, corona-proof material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546586A (en) * | 2003-12-12 | 2004-11-17 | 四川东方绝缘材料股份有限公司 | Preparation method of nanometer modified corona-tolerant enamel of enameled wire |
-
2011
- 2011-12-19 CN CN2011104269263A patent/CN102532605B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546586A (en) * | 2003-12-12 | 2004-11-17 | 四川东方绝缘材料股份有限公司 | Preparation method of nanometer modified corona-tolerant enamel of enameled wire |
Non-Patent Citations (4)
| Title |
|---|
| 《中国电机工程学报》 20061031 李鸿岩等 "聚酰亚胺/纳米Al2O3复合薄膜的介电性能" 第166-169页 1-8 第26卷, 第6期 * |
| 《材料科学与工艺》 20090831 刘立柱 "纳米Al2O3的晶型对聚酰亚胺杂化薄膜性能的影响" 508-515 1-8 第17卷, 第4期 * |
| 刘立柱: ""纳米Al2O3的晶型对聚酰亚胺杂化薄膜性能的影响"", 《材料科学与工艺》 * |
| 李鸿岩等: ""聚酰亚胺/纳米Al2O3复合薄膜的介电性能"", 《中国电机工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646491A (en) * | 2020-06-09 | 2020-09-11 | 湖南科技大学 | Dispersion liquid for dispersing nano particles in corona-resistant paint, preparation method and application thereof, and application of stable nano particle dispersion liquid |
| CN112300785A (en) * | 2020-10-28 | 2021-02-02 | 陕西彩虹新材料有限公司 | Preparation method of fluorescent slurry |
| CN112300785B (en) * | 2020-10-28 | 2024-02-13 | 陕西彩虹新材料有限公司 | Preparation method of fluorescent slurry |
| CN115873307A (en) * | 2021-09-28 | 2023-03-31 | 国网湖南省电力有限公司 | Modified nano alumina particle and preparation method thereof, corona-proof material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102532605B (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102532605B (en) | Corona-resistant slurry and preparation method thereof | |
| CN105294019B (en) | A kind of polyurethane polyacrylate cement waterproof paint and preparation method thereof | |
| JP6547537B2 (en) | Boron nitride agglomerated particles for thin film formation, insulating coating, method of producing the agglomerated particles, method of producing an insulating electrodeposition paint, enameled wire and coil | |
| TWI471368B (en) | Fine particles of aluminum hydroxide powder for filling resin and a method for producing the same | |
| CN104164145A (en) | Water-based baked industrial paint | |
| CN105777980A (en) | Epoxy/carboxyl-containing acrylate copolymer core-shell emulsion and preparation method and application thereof | |
| CN104497926A (en) | Waterproof environment-friendly binder | |
| CN102585641A (en) | Environment-friendly type weather resistant and waterproof outer wall coating and preparation method thereof | |
| CN101565570A (en) | Composite latex for paints, water paint and preparation method of water paint | |
| CN102604521B (en) | Aqueous polyurethane exterior wall paint and preparation method thereof | |
| CN102601355A (en) | Surface modification method for improving corrosion resistance of bronze powder | |
| CN109135467A (en) | composite coating and preparation method thereof | |
| DE102013226494A1 (en) | Modification of the surfaces of metal oxides by means of chain-like structures | |
| CN102732132A (en) | Environment-friendly insulation paint used on non-oriented electrical steel, and preparation method thereof | |
| DE102007008232A1 (en) | Dispersion containing ceria and colloidal silica | |
| CN102732032A (en) | Corona-resistant polyimide film and process for preparing same | |
| CN113549385B (en) | Waterborne antistatic epoxy floor paint and preparation method thereof | |
| CN110305560A (en) | A kind of anti-coagulation modified epoxy zinc-rich paint of bi-component anti-corrosion | |
| CN104497946A (en) | Adhesive resistant to water and deformation | |
| CN102732142A (en) | Water-based pearlescent coating solution for digital printing and preparation method thereof | |
| CN110577792A (en) | water-based anticorrosive paint containing nano-cellulose/reduced graphene oxide composite material and preparation method thereof | |
| JP5259039B2 (en) | Curable resin composition | |
| CN107858025A (en) | Waterborne inorganic einc-rich primer for anticorrosion of steel structure and preparation method thereof | |
| CN111073439A (en) | Protective adhesive special for chemical milling of acidic media such as titanium alloy and stainless steel | |
| CN107556570B (en) | Dibutylbenzene redispersible emulsion powder and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 541004 the Guangxi Zhuang Autonomous Region Guilin Qixing Road, No. 1 Applicant after: Guilin Electrical Equipment Scientific Research Institute Co., Ltd. Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin Qixing Road, No. 1 Applicant before: Guilin Electrical Appliace Science Research Institute |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: GUILIN ELECTRICAL EQUIPMENT SCIENTIFIC RESEARCH INSTITUTE TO: GUILIN ELECTRICAL EQUIPMENT SCIENTIFIC RESEARCH INSTITUTE CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |