CN105355266A - Preparation of high-performance flame retardant insulation paper for transformer - Google Patents
Preparation of high-performance flame retardant insulation paper for transformer Download PDFInfo
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- CN105355266A CN105355266A CN201510739232.3A CN201510739232A CN105355266A CN 105355266 A CN105355266 A CN 105355266A CN 201510739232 A CN201510739232 A CN 201510739232A CN 105355266 A CN105355266 A CN 105355266A
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Abstract
The invention discloses preparation of high-performance flame retardant insulation paper for a transformer. The high-performance flame retardant insulation paper is prepared from the following raw materials in parts by weight: 11-13 parts of nano-titanium dioxide, 2-3 parts of phenolic resin, 500-550 parts of pulp boards, 1.3-1.5 parts of sodium silicate, 1-1.3 parts of sodium carboxymethylcellulose, 0.5-0.7 part of sodium tripolyphosphate, 3-4 parts of alumina, 1.3-1.5 parts of aluminum selenide, 1.2-1.5 parts of apatite, and a proper amount of deionized water. The preparation method provided by the invention is simple, the prepared insulation paper has excellent performance of all aspects, the flame retardant insulation performance is high, the operation is automated, the production efficiency is high, and the preparation method is worth promoting.
Description
Technical field
The present invention relates to transformer technology field, particularly relate to a kind of preparation of transformer high-performance refractory insulating paper.
Background technology
Insulating paper is widely used as the insulating material of the equipment such as motor, cable, capacitor and transformer, is also the main composition material of the insulating material such as laminated product, composite material and preimpregnation material.Due to the special purpose of insulating paper, require it to possess characteristic that some are different from other paper kind, mainly comprises mechanical performance, electric property and thermal stability.And due to the difference of all kinds of electric equipment environment for use, motor, chemical plant as run under wet heat condition often contact the aggressive chemistry medium of high concentration motor, having the motor etc. run under radioactive radiation, require that insulating paper also will have good physical and chemical performance and environmental suitability.The insulating paper adopting native cellulose to prepare just is widely used in the power equipment of various oil immersed type as insulating material from the nineties in 19th century, although present insulating material has had larger change and progress, but cellulose insulation paper has, and price is low, mechanical strength is large, size easily controls, the plurality of advantages such as excellent electrical properties, environmental friendliness after immersion oil, remain the first-selected insulating material of oil-immersed type transformer, in order to improve the various performances of paper in the middle of traditional paper industry, multiple physico-chemical process is utilized to carry out modification to paper.Utilize inorganic filler to carry out modification insulating paper and can obtain the more excellent insulating paper of performance, but the domestic and international research for this respect is little at present.
Nano titanium oxide has very large specific area, therefore the just many and cellulose surface of the hydroxyl quantity produced on its surface is also with a large amount of hydroxyls, just provide condition for combining closely between nano-titania particle and cellulose, ensure nano titanium oxide adhesive rate on cellulose, and nano titanium oxide can also play good effect to the insulation property of insulating oil.So the present invention selects nano titanium oxide to carry out modification to insulating paper.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of preparation of transformer high-performance refractory insulating paper.
The present invention is achieved by the following technical solutions:
A preparation for transformer high-performance refractory insulating paper, is made up of the raw material of following weight portion: nano titanium oxide 11-13, phenolic resins 2-3, pulpboard 500-550, sodium metasilicate 1.3-1.5, sodium carboxymethylcellulose 1-1.3, sodium phosphate trimer 0.5-0.7, alumina 3-4, aluminum selenide 1.3-1.5, apatite 1.2-1.5, deionized water are appropriate.
The preparation of described a kind of transformer high-performance refractory insulating paper, be made up of following concrete steps:
(1) by nano titanium oxide and alumina dry 30min under 100 ° of C in an oven, be added to after cooling in 0.5Wt% silane coupler kh550 ethanol solution, then solution is carried out reflux condensation mode process, take out post-drying and mill stand-by;
(2) be that product prepared by the phenolic resins of 15-20% and step (1) mixes by solid content, stirring reaction 0.5-1h when being heated to 80 ° of C again, constant temperature keeps adding polyphenylene sulfide fibre again and soaks 4-5h, pulls rear distilled water cleaning fiber number out for subsequent use all over post-drying;
(3) pulpboard is soaked 12h in deionized water, soaking after discongesting 6-8min fully utilizes beater to pull an oar, beating degree until slurry stops making beating to during 40-45 ° of SR, the slurry of preparation is put into fiber dissociation device, adding deionized water makes the concentration of slurry carry out mechanical treatment in 2-2.5%, obtains paper pulp suspension-turbid liquid for subsequent use;
(4) mixing of sodium phosphate trimer, aluminum selenide, sodium carboxymethylcellulose, apatite and sodium metasilicate is added the deionized water mixing and stirring of total times amount 6-8 times amount, product prepared by step (2) is added in paper pulp suspension-turbid liquid prepared by step (3), add above-mentioned mixed solution again to stir under 300 revs/min, finally pulp suspension is added in paper industry former and carries out dehydration forming, can obtain.
Advantage of the present invention is: the present invention adopts titanium dioxide surface modification, not easily assemble, it is made to be evenly distributed in paper pulp, and the insulation property of insulating paper can be increased substantially, and by fiber impregnation in insulating resin, then solidification combing utilizes viscose solution and cellulose fibre mixed textile, the extrusion coating paper of preparation substantially increases its mechanical performance, insulating properties, the effect of the aspect such as heat-resistant aging and intensity, the polyphenylene sulfide fibre added has excellent thermal stability, anti-flammability and non-oxidizability, the aluminium triphosphate added, aluminum selenide and apatite with the use of, bonding good dispersion, and can reinforced insulation paper wear-resisting, fire-retardant, the effect of the aspect such as weather-proof, preparation method of the present invention is simple, the insulating paper various aspects of performance of preparation is excellent, fire retardant insulating performance is high, automation mechanized operation, production efficiency is high, be worthy to be popularized.
Embodiment
A preparation for transformer high-performance refractory insulating paper, is made up of the raw material of following weight portion (kilogram): nano titanium oxide 11, phenolic resins 2, pulpboard 500, sodium metasilicate 1.3, sodium carboxymethylcellulose 1, sodium phosphate trimer 0.5, alumina 3, aluminum selenide 1.3, apatite 1.2, deionized water are appropriate.
The preparation of described a kind of transformer high-performance refractory insulating paper, be made up of following concrete steps:
(1) by nano titanium oxide and alumina dry 30min under 100 ° of C in an oven, be added to after cooling in 0.5Wt% silane coupler kh550 ethanol solution, then solution is carried out reflux condensation mode process, take out post-drying and mill stand-by;
(2) by solid content be 15% phenolic resins and the product prepared of step (1) mix, then stirring reaction 0.5h when being heated to 80 ° of C, constant temperature keeps adding polyphenylene sulfide fibre again and soaks 4h, pulls rear distilled water cleaning fiber number out for subsequent use all over post-drying;
(3) pulpboard is soaked 12h in deionized water, soaking after discongesting 6min fully utilizes beater to pull an oar, beating degree until slurry stops making beating to during 40 ° of SR, the slurry of preparation is put into fiber dissociation device, adding deionized water makes the concentration of slurry carry out mechanical treatment in 2%, obtains paper pulp suspension-turbid liquid for subsequent use;
(4) mixing of sodium phosphate trimer, aluminum selenide, sodium carboxymethylcellulose, apatite and sodium metasilicate is added the deionized water mixing and stirring of total times amount 6 times amount, product prepared by step (2) is added in paper pulp suspension-turbid liquid prepared by step (3), add above-mentioned mixed solution again to stir under 300 revs/min, finally pulp suspension is added in paper industry former and carries out dehydration forming, can obtain.
Its performance test of the insulating paper prepared according to the present embodiment is as follows: puncture voltage is 3.6KV, dielectric strength is 31KV/mm, the fire-retardant rank of insulating paper is V0 level, paper whiteness>=80%, dry tensile strength is 4.4KN/m, wet tensile (strength) is 0.46KN/m, suction head 55mm, air permeability is 20 ± 4s, and specific insulation is 1.1 × 10
6, sheet resistance is 4.0 × 10
4, dielectric constant is 5.2, and dielectric dissipation factor is 0.046.
Claims (2)
1. the transformer preparation of high-performance refractory insulating paper, it is characterized in that, be made up of the raw material of following weight portion: nano titanium oxide 11-13, phenolic resins 2-3, pulpboard 500-550, sodium metasilicate 1.3-1.5, sodium carboxymethylcellulose 1-1.3, sodium phosphate trimer 0.5-0.7, alumina 3-4, aluminum selenide 1.3-1.5, apatite 1.2-1.5, deionized water are appropriate.
2. the preparation of a kind of transformer high-performance refractory insulating paper according to claim 1, is characterized in that, be made up of following concrete steps:
(1) by nano titanium oxide and alumina dry 30min under 100 ° of C in an oven, be added to after cooling in 0.5Wt% silane coupler kh550 ethanol solution, then solution is carried out reflux condensation mode process, take out post-drying and mill stand-by;
(2) be that product prepared by the phenolic resins of 15-20% and step (1) mixes by solid content, stirring reaction 0.5-1h when being heated to 80 ° of C again, constant temperature keeps adding polyphenylene sulfide fibre again and soaks 4-5h, pulls rear distilled water cleaning fiber number out for subsequent use all over post-drying;
(3) pulpboard is soaked 12h in deionized water, soaking after discongesting 6-8min fully utilizes beater to pull an oar, beating degree until slurry stops making beating to during 40-45 ° of SR, the slurry of preparation is put into fiber dissociation device, adding deionized water makes the concentration of slurry carry out mechanical treatment in 2-2.5%, obtains paper pulp suspension-turbid liquid for subsequent use;
(4) mixing of sodium phosphate trimer, aluminum selenide, sodium carboxymethylcellulose, apatite and sodium metasilicate is added the deionized water mixing and stirring of total times amount 6-8 times amount, product prepared by step (2) is added in paper pulp suspension-turbid liquid prepared by step (3), add above-mentioned mixed solution again to stir under 300 revs/min, finally pulp suspension is added in paper industry former and carries out dehydration forming, can obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739232.3A CN105355266A (en) | 2015-11-04 | 2015-11-04 | Preparation of high-performance flame retardant insulation paper for transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739232.3A CN105355266A (en) | 2015-11-04 | 2015-11-04 | Preparation of high-performance flame retardant insulation paper for transformer |
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| CN105355266A true CN105355266A (en) | 2016-02-24 |
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| CN201510739232.3A Pending CN105355266A (en) | 2015-11-04 | 2015-11-04 | Preparation of high-performance flame retardant insulation paper for transformer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482626A (en) * | 2003-05-29 | 2004-03-17 | 上海大学 | Manufacturing method of electromagnetic enamel-covered wire adaptable for variable frequency motor |
| CN1580396A (en) * | 2004-04-27 | 2005-02-16 | 广东冠豪高新技术股份有限公司 | Anticounterfeit fiber carbor-free copy paper and its production method |
| CN102666694A (en) * | 2009-11-09 | 2012-09-12 | 西门子公司 | Insulating resin |
| CN103554645A (en) * | 2013-10-31 | 2014-02-05 | 合肥得润电子器件有限公司 | Modified tear-resistant EVA (Ethylene-Vinyl Acetate) insulating material for wire harnesses of automobile |
-
2015
- 2015-11-04 CN CN201510739232.3A patent/CN105355266A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482626A (en) * | 2003-05-29 | 2004-03-17 | 上海大学 | Manufacturing method of electromagnetic enamel-covered wire adaptable for variable frequency motor |
| CN1580396A (en) * | 2004-04-27 | 2005-02-16 | 广东冠豪高新技术股份有限公司 | Anticounterfeit fiber carbor-free copy paper and its production method |
| CN102666694A (en) * | 2009-11-09 | 2012-09-12 | 西门子公司 | Insulating resin |
| CN103554645A (en) * | 2013-10-31 | 2014-02-05 | 合肥得润电子器件有限公司 | Modified tear-resistant EVA (Ethylene-Vinyl Acetate) insulating material for wire harnesses of automobile |
Non-Patent Citations (2)
| Title |
|---|
| 吕程: "纳米TiO2改性绝缘纸的制备和性能研究", 《中国博士学位论文全文数据库 工程科技II辑》 * |
| 祁一信等: "改性绝缘纸的制备及其短期耐热性研究", 《绝缘材料》 * |
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Application publication date: 20160224 |
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