CN108505374B - A kind of preparation method of modified cellulose insulating paper - Google Patents
A kind of preparation method of modified cellulose insulating paper Download PDFInfo
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- CN108505374B CN108505374B CN201810363639.4A CN201810363639A CN108505374B CN 108505374 B CN108505374 B CN 108505374B CN 201810363639 A CN201810363639 A CN 201810363639A CN 108505374 B CN108505374 B CN 108505374B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/36—Explosive disintegration by sudden pressure reduction
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/006—Pulping cellulose-containing materials with compounds not otherwise provided for
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
The present invention relates to a kind of preparation methods of modified cellulose insulating paper, belong to insulating materials preparation technical field.The present invention passes through micro-explosion first, under conditions of keeping birch fiber physical mechanics property itself and complete appearance, fibrous inside generates pressure difference during pressurization and moment discharge, so that birch fibrous inside forms the high pressure draught impacted from inside to outside, under the action of the high pressure draught, the weak tissue such as birch fiber finer cell wall and pit membrane, which is destroyed, carries out preliminary defibering, then again by after defibering fiber and tartaric acid mix high temperature and pressure boiling, mashing, which aoxidizes, is made modified pulp, it is reacted followed by sodium metasilicate and hydrochloric acid and aminopropyl triethoxysilane, modified manometer silicon dioxide is made, it manufactures paper with pulp after itself and modified pulp are mixed, hot pressure reaction is up to modified cellulose insulating paper, insulating paper good insulation preformance produced by the present invention, high mechanical strength, it has broad application prospects.
Description
Technical field
The present invention relates to a kind of preparation methods of modified cellulose insulating paper, belong to insulating materials preparation technical field.
Background technique
Current large-scale power transformer is mostly oil-immersed power transformer, insulation mainly by oil, paper, cardboard and other
The solid of the compositions such as solid insulation-oil-insulation structure.Paper oil insulation is a kind of typical solid-liquid compound inslation, property in transformer
Decisive role can be played to the long-term running safety and reliability of transformer.Higher and higher voltage class and miniaturization is equal
It is required that dielectric must have higher dielectric strength and mechanical strength, traditional oil-paper combination insulation has been increasingly difficult to full
Foot requires.
Cellulose insulation paper is one of most widely used interior insulation material in oil-immersed power transformer, due to the runtime
Between can not replace, mechanical and insulation performance quality directly decides the service life of transformer.In real transformer, insulation
Paper is for a long time by the effect of high electrical-field stressing, once breakdown, which occurs, will lead to transformer fault.As can promoting insulating paper
Electric property can save the usage amount of insulating paper, extend the working life of insulating paper, reduce the width of transformer oil clearance, into
And the volume and core loss of limiting transformer.
Therefore, the New insulated paper of a kind of mechanical performance and excellent insulation performance is developed in the modification for carrying out insulating paper
It is significant to insulating materials preparation technical field.
Summary of the invention
Present invention mainly solves the technical issues of, apply for traditional cellulose insulation paper at present in real transformer
In, for insulating paper for a long time by the effect of high electrical-field stressing, mechanical performance and insulation performance are still poor, it is difficult to make for a long time
With influencing the defect of working life, provide a kind of preparation method of modified cellulose insulating paper.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of preparation method of modified cellulose insulating paper, it is characterised in that specific preparation step are as follows:
(1) birch bits are weighed to be put into the steam-explosion jar of steam blasting device, and are passed through Preheated steam into steam-explosion jar, until
Pressure is up to 2.5~3.0MPa in steam-explosion jar, after 30~50s of pressure maintaining, opens steam-explosion jar discharge valve, makes material moment in steam-explosion jar
It is injected into receiving tank, collects material in receiving tank, obtain steam explosion wet feed；
(2) it being put into beater after mixing above-mentioned steam explosion wet feed and water, mashing to beating degree is 40 ° of SR, slurry is obtained,
Slurry is put into autoclaving pot, then tartaric acid is added into autoclaving pot, 6~8h of autoclaving obtains pretreatment paper
Slurry；
(3) it is put into water-bath after mixing above-mentioned pretreatment paper pulp and potassium permanganate, is heated to 70~80 DEG C, protected
Temperature is stirred to react 30~40min, obtains modified pulp, spare；
(4) weighing mass fraction is that 30% sodium silicate solution is fitted into beaker, then it is 1mol/L salt that concentration, which is added dropwise, into beaker
Acid adjusts sodium silicate solution pH to 5.0~6.0, is stirred to react 15~20min, obtains mixed liquor, continues that ammonia is added into beaker
Propyl-triethoxysilicane is heated to 60~70 DEG C after stirring 20~30min, continues to be stirred to react 15~20min, then
Still aging 1~2h at room temperature is separated by filtration to obtain filter residue；
(5) according to parts by weight, 60~80 parts of spare modified pulps, 3~5 parts of cornstarch are weighed, on 15~20 parts
It states to pour into after filter residue, the mixing of 3~5 parts of peach gums and copy in extracting container, be 0.5mol/L salt acid for adjusting pH to 5.0~5.6 with concentration, copy
Square insulating paper green body is made, reusable heat press hot pressing is finally putting into baking oven, and dry discharging is to get modified cellulose insulation
Paper.
The mass ratio of steam explosion wet feed described in step (2) and water is 1:5, and the additional amount of tartaric acid is stock quality
3%, the pressure of autoclaving is 2.0~2.5MPa, and the temperature of autoclaving is 200~250 DEG C.
The mass ratio of pretreatment paper pulp and potassium permanganate described in step (3) is 10:1.
The additional amount of aminopropyl triethoxysilane described in step (4) is the 5% of mixed liquor quality.
Copying for system is copied described in step (5) takes quantification of 130~150g/m2, the side length of square insulating paper green body is
30cm, 80 μm of thickness, the pressure of hot pressing is 1.2~1.3MPa, and the temperature of hot pressing is 3~5min, dry temperature is 105~
110 DEG C, the dry time is 30~40min.
The beneficial effects of the present invention are:
(1) present invention is first by micro-explosion, in the condition for keeping birch fiber physical mechanics property itself and complete appearance
Under, fibrous inside generates pressure difference during pressurization and moment discharge, so that the formation of birch fibrous inside is impacted from inside to outside
High pressure draught, under the action of the high pressure draught, the weak tissue such as birch fiber finer cell wall and pit membrane is destroyed progress just
Walk defibering, then again by after defibering fiber and tartaric acid mix high temperature and pressure boiling, mashing aoxidize be made modified pulp, then
It is reacted using sodium metasilicate and hydrochloric acid and aminopropyl triethoxysilane, modified manometer silicon dioxide is made, by itself and modified paper
It manufactures paper with pulp after slurry mixing, hot pressure reaction is up to modified cellulose insulating paper, insulating paper produced by the present invention, after preliminary defibering
Fiber and organic carboxyl acid carry out high temperature and pressure boiling jointly, make to pre-process the fiber in paper pulp under high pressure and high temperature condition and absorb heat
Can, stronger activity occurs for strand, and within the scope of a relatively narrow temperature, intermolecular connection rupture is intermolecular mutual
Displacement aggravation, polymer property is varied, unformed fiber from glassy transition be plasticizing state, later hydrothermal and
Further hydrolyzed under the action of organic carboxyl acid, hydrolysis can promote it is parallel, subsequent, or even intersect chemical action hair
It is raw, and condensation or polycondensation (resinification) can occur under subsequent effect for the furfural that more furfurals can be promoted to generate, and generated, finally
The paper pulp fiber of resinification is obtained, during resinification, condensation polycondensation occurs for the furfural between fiber, thus by adjacent fiber
Anchoring combines, and forms firm cross-linked structure, so that the cohesive force of final insulating paper obtained is improved, mechanical strength
Also it is greatly improved, and the present invention also joined modified nano silica, silica surface into paper pulp fiber
Silicone hydroxyl and paper pulp fiber in hydroxyl under hot pressing function, occur dehydrating condensation generate the great Si-O-Si key of bond energy, then
The secondary cohesive force improved inside insulating paper, increases the mechanical strength of insulating paper.
Meanwhile orthosilicic acid precipitating can be generated after sodium metasilicate and hydrochloric acid reaction, orthosilicic acid can generate again under conditions of heated
Nano silica precipitating, and during being stirred to react, three ethoxy of silicone hydroxyl and aminopropyl of nano-silica surface
The alcoxyl silicon substrate of base silane is chemically combined, and obtains the nano silica of surface grafting siloxanes, by improved silica
It is added in modified pulp, since modified pulp is by potassium permanganate partial oxidation, the hydroxylic moiety in paper pulp is converted into carboxyl, at this moment
The amino of aminopropyl triethoxysilane can generate Chemical bonding with the carboxyl on fiber again, and nano silica is firm
Pulp fiber surface is anchored at, to successfully nano silica is introduced into insulating paper, the introducing of nano silica
So that effective mean free path of insulating paper internal electron shortens, it is not easy to migrate in the electric field and sufficiently accelerates, to mitigate
Bombardment to fiber molecule chain, guiding discharge channel is difficult to be formed, thus improves the disruptive field intensity of insulating paper, nano-silica
SiClx is homogeneously dispersed in insulating paper, is generated strong interaction between insulation paper fiber, has been fettered to a certain extent absolutely
The movement of edge paper polar groups, meanwhile, the addition of nano silica increases interfibrous distance, causes to generate between fiber
More gaps reduce so that the oil content after insulating paper immersion oil increases to reduce the relative dielectric constant of insulating paper
With the difference between transformer oil relative dielectric constant, the field distribution inside oil-paper combination insulation is improved, so that transformer
Oiled paper system shelf depreciation firing potential and breakdown voltage have more significant raising, have a extensive future.
Specific embodiment
It weighs birch bits to be put into the steam-explosion jar of steam blasting device, and is passed through Preheated steam into steam-explosion jar, until vapour
Pressure is up to 2.5~3.0MPa in quick-fried tank, after 30~50s of pressure maintaining, opens steam-explosion jar discharge valve, sprays material moment in steam-explosion jar
It injects in receiving tank, collects material in receiving tank, obtain steam explosion wet feed；It is in mass ratio after 1:5 is mixed by steam explosion wet feed and water
It is put into beater, mashing to beating degree is 40 ° of SR, obtains slurry, slurry is put into autoclaving pot, then to autoclaving
The tartaric acid of stock quality 3% is added in pot, is heated to 200~250 DEG C in the case where pressure is the pressure of 2.0~2.5MPa, protects
Warm 6~8h of boiling obtains pretreatment paper pulp；It is in mass ratio to be put into water-bath after 10:1 is mixed by pretreatment paper pulp and potassium permanganate
In pot, 70~80 DEG C are heated to, insulated and stirred reacts 30~40min, obtains modified pulp, spare；Weigh mass fraction
It is fitted into beaker for 30% sodium silicate solution, then it is that 1mol/L hydrochloric acid adjusts sodium silicate solution pH to 5.0 that concentration, which is added dropwise, into beaker
~6.0, it is stirred to react 15~20min, obtains mixed liquor, continues three ethoxy of aminopropyl that mixed liquor quality 5% is added into beaker
Base silane is heated to 60~70 DEG C after stirring 20~30min, continues to be stirred to react 15~20min, then stand at room temperature
It is aged 1~2h, is separated by filtration to obtain filter residue；According to parts by weight, 60~80 parts of spare modified pulps, 3~5 parts of corns are weighed
It pours into and is copied in extracting container after starch, 15~20 parts of above-mentioned filter residues, 3~5 parts of peach gum mixing, be that 0.5mol/L hydrochloric acid is adjusted with concentration
PH to 5.0~5.6 takes quantification of 130~150g/m by copying2Copying and side length is made is 30cm, 80 μm of thickness of square insulating paper
Green body, reusable heat press are finally putting into baking oven with pressure 3~5min of hot pressing of 1.2~1.3MPa, dry at 105~110 DEG C
30~40min discharges to get modified cellulose insulating paper.
It weighs birch bits to be put into the steam-explosion jar of steam blasting device, and is passed through Preheated steam into steam-explosion jar, until vapour
Pressure reaches 2.5MPa in quick-fried tank, after pressure maintaining 30s, opens steam-explosion jar discharge valve, is injected into material moment and connects
In closed cans, material in receiving tank is collected, steam explosion wet feed is obtained；It is in mass ratio to be put into mashing after 1:5 is mixed by steam explosion wet feed and water
In machine, mashing to beating degree is 40 ° of SR, obtains slurry, slurry is put into autoclaving pot, then be added into autoclaving pot
The tartaric acid of stock quality 3% is heated to 200 DEG C in the case where pressure is the pressure of 2.0MPa, keeps the temperature boiling 6h, obtain pre- place
Manage paper pulp；In mass ratio it is to be put into water-bath after 10:1 is mixed by pretreatment paper pulp and potassium permanganate, is heated to 70 DEG C,
Insulated and stirred reacts 30min, obtains modified pulp, spare；Mass fraction is weighed to be fitted into beaker for 30% sodium silicate solution, then
It is that 1mol/L hydrochloric acid adjusts sodium silicate solution pH to 5.0 that concentration is added dropwise into beaker, is stirred to react 15min, obtains mixed liquor, after
Continue the aminopropyl triethoxysilane that mixed liquor quality 5% is added into beaker, is heated to 60 DEG C after stirring 20min, continues
It is stirred to react 15min, then still aging 1h at room temperature, is separated by filtration to obtain filter residue；According to parts by weight, weigh 60 parts it is spare
Modified pulp, 3 parts of cornstarch, 15 parts of above-mentioned filter residues, pour into after the mixing of 3 parts of peach gums and copy in extracting container, be with concentration
0.5mol/L salt acid for adjusting pH takes quantification of 130g/m to 5.0, by copying2Copying and side length is made is 30cm, the square that 80 μm of thickness
Insulating paper green body, reusable heat press are finally putting into baking oven with the pressure hot pressing 3min of 1.2MPa, and dry 30min goes out at 105 DEG C
Material is to get modified cellulose insulating paper.
It weighs birch bits to be put into the steam-explosion jar of steam blasting device, and is passed through Preheated steam into steam-explosion jar, until vapour
Pressure reaches 2.8MPa in quick-fried tank, after pressure maintaining 40s, opens steam-explosion jar discharge valve, is injected into material moment and connects
In closed cans, material in receiving tank is collected, steam explosion wet feed is obtained；It is in mass ratio to be put into mashing after 1:5 is mixed by steam explosion wet feed and water
In machine, mashing to beating degree is 40 ° of SR, obtains slurry, slurry is put into autoclaving pot, then be added into autoclaving pot
The tartaric acid of stock quality 3% is heated to 230 DEG C in the case where pressure is the pressure of 2.3MPa, keeps the temperature boiling 7h, obtain pre- place
Manage paper pulp；In mass ratio it is to be put into water-bath after 10:1 is mixed by pretreatment paper pulp and potassium permanganate, is heated to 75 DEG C,
Insulated and stirred reacts 35min, obtains modified pulp, spare；Mass fraction is weighed to be fitted into beaker for 30% sodium silicate solution, then
It is that 1mol/L hydrochloric acid adjusts sodium silicate solution pH to 5.5 that concentration is added dropwise into beaker, is stirred to react 18min, obtains mixed liquor, after
Continue the aminopropyl triethoxysilane that mixed liquor quality 5% is added into beaker, is heated to 65 DEG C after stirring 25min, continues
It is stirred to react 18min, then still aging 1h at room temperature, is separated by filtration to obtain filter residue；According to parts by weight, weigh 70 parts it is spare
Modified pulp, 4 parts of cornstarch, 18 parts of above-mentioned filter residues, pour into after the mixing of 4 parts of peach gums and copy in extracting container, be with concentration
0.5mol/L salt acid for adjusting pH takes quantification of 140g/m to 5.3, by copying2Copying and side length is made is 30cm, the square that 80 μm of thickness
Insulating paper green body, reusable heat press are finally putting into baking oven with the pressure hot pressing 4min of 1.2MPa, and dry 35min goes out at 108 DEG C
Material is to get modified cellulose insulating paper.
It weighs birch bits to be put into the steam-explosion jar of steam blasting device, and is passed through Preheated steam into steam-explosion jar, until vapour
Pressure reaches 3.0MPa in quick-fried tank, after pressure maintaining 50s, opens steam-explosion jar discharge valve, is injected into material moment and connects
In closed cans, material in receiving tank is collected, steam explosion wet feed is obtained；It is in mass ratio to be put into mashing after 1:5 is mixed by steam explosion wet feed and water
In machine, mashing to beating degree is 40 ° of SR, obtains slurry, slurry is put into autoclaving pot, then be added into autoclaving pot
The tartaric acid of stock quality 3% is heated to 250 DEG C in the case where pressure is the pressure of 2.5MPa, keeps the temperature boiling 8h, obtain pre- place
Manage paper pulp；In mass ratio it is to be put into water-bath after 10:1 is mixed by pretreatment paper pulp and potassium permanganate, is heated to 80 DEG C,
Insulated and stirred reacts 40min, obtains modified pulp, spare；Mass fraction is weighed to be fitted into beaker for 30% sodium silicate solution, then
It is that 1mol/L hydrochloric acid adjusts sodium silicate solution pH to 6.0 that concentration is added dropwise into beaker, is stirred to react 20min, obtains mixed liquor, after
Continue the aminopropyl triethoxysilane that mixed liquor quality 5% is added into beaker, is heated to 70 DEG C after stirring 30min, continues
It is stirred to react 20min, then still aging 2h at room temperature, is separated by filtration to obtain filter residue；According to parts by weight, weigh 80 parts it is spare
Modified pulp, 5 parts of cornstarch, 20 parts of above-mentioned filter residues, pour into after the mixing of 5 parts of peach gums and copy in extracting container, be with concentration
0.5mol/L salt acid for adjusting pH takes quantification of 150g/m to 5.6, by copying2Copying and side length is made is 30cm, the square that 80 μm of thickness
Insulating paper green body, reusable heat press are finally putting into baking oven with the pressure hot pressing 5min of 1.3MPa, and dry 40min goes out at 110 DEG C
Material is to get modified cellulose insulating paper.
Reference examples are using the cellulose insulation paper that company, Chongqing City produces as reference examples
Performance detection is carried out to the insulating paper in insulating paper produced by the present invention and reference examples, testing result is as shown in table 1:
1 performance test results of table
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Breakdown voltage (kV) | 31.5 | 32.0 | 32.5 | 27.4 |
| Puncture dot thickness (mm) | 0.563 | 0.568 | 0.569 | 0.556 |
| Disruptive field intensity (kV/mm) | 56.9 | 57.2 | 57.5 | 50.3 |
| Relative dielectric constant | 2.3 | 2.2 | 2.2 | 2.5 |
| Tensile strength (kN/m) | 11.20 | 11.25 | 11.28 | 8.30 |
The insulating paper good insulation preformance produced by the present invention it can be seen from the detection data in upper table, high mechanical strength, tool
Have broad application prospects.
Claims (5)
1. a kind of preparation method of modified cellulose insulating paper, it is characterised in that specific preparation step are as follows:
(1) birch bits are weighed to be put into the steam-explosion jar of steam blasting device, and are passed through Preheated steam into steam-explosion jar, until steam explosion
Pressure is up to 2.5~3.0MPa in tank, after 30~50s of pressure maintaining, opens steam-explosion jar discharge valve, sprays material moment in steam-explosion jar
Into in receiving tank, material in receiving tank is collected, steam explosion wet feed is obtained；
(2) it is put into beater after mixing above-mentioned steam explosion wet feed and water, mashing to beating degree is 40 ° of SR, obtains slurry, will starch
Material is put into autoclaving pot, then tartaric acid is added into autoclaving pot, 6~8h of autoclaving, obtains pretreatment paper pulp；
(3) it is put into water-bath after mixing above-mentioned pretreatment paper pulp and potassium permanganate, is heated to 70~80 DEG C, heat preservation is stirred
30~40min of reaction is mixed, modified pulp is obtained, it is spare；
(4) weighing mass fraction is that 30% sodium silicate solution is fitted into beaker, then it is 1mol/L hydrochloric acid tune that concentration, which is added dropwise, into beaker
Sodium silicate solution pH to 5.0~6.0 is saved, 15~20min is stirred to react, obtains mixed liquor, continue that aminopropyl is added into beaker
Triethoxysilane is heated to 60~70 DEG C after stirring 20~30min, continues to be stirred to react 15~20min, then in room temperature
Under still aging 1~2h, be separated by filtration to obtain filter residue；
(5) according to parts by weight, 60~80 parts of spare modified pulps, 3~5 parts of cornstarch, 15~20 parts of above-mentioned filters are weighed
It pours into and is copied in extracting container after slag, 3~5 parts of peach gum mixing, be 0.5mol/L salt acid for adjusting pH to 5.0~5.6 with concentration, copy and be made
Square insulating paper green body, reusable heat press hot pressing are finally putting into baking oven, and dry discharging is to get modified cellulose insulating paper.
2. a kind of preparation method of modified cellulose insulating paper according to claim 1, it is characterised in that: in step (2)
The mass ratio of the steam explosion wet feed and water is 1:5, and the additional amount of tartaric acid is the 3% of stock quality, and the pressure of autoclaving is
2.0~2.5MPa, the temperature of autoclaving are 200~250 DEG C.
3. a kind of preparation method of modified cellulose insulating paper according to claim 1, it is characterised in that: in step (3)
The mass ratio of the pretreatment paper pulp and potassium permanganate is 10:1.
4. a kind of preparation method of modified cellulose insulating paper according to claim 1, it is characterised in that: in step (4)
The additional amount of the aminopropyl triethoxysilane is the 5% of mixed liquor quality.
5. a kind of preparation method of modified cellulose insulating paper according to claim 1, it is characterised in that: in step (5)
The copying for system of copying takes quantification of 130~150g/m2, the side length of square insulating paper green body is 30cm, 80 μm of thickness, hot pressing
Pressure be 1.2~1.3MPa, the temperature of hot pressing is 3~5min, and dry temperature is 105~110 DEG C, and the dry time is 30
~40min.
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| CN108862239A (en) * | 2018-09-28 | 2018-11-23 | 陈太师 | A kind of preparation method of high tenacity charcoal-aero gel |
| CN110241660B (en) * | 2019-05-17 | 2021-10-29 | 五河县宜然知识产权服务有限公司 | Processing method for recycling waste packaging paper |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU376511A1 (en) * | 1971-04-03 | 1973-04-05 | PAPER MASS FOR THE MANUFACTURE OF STABILIZED INSULATION PAPER | |
| SU1286662A1 (en) * | 1985-01-24 | 1987-01-30 | Фабрика "Красный Курсант" Производственного Объединения "Кировбумпром" | Method of producing electric insulation paper |
| CN101796247A (en) * | 2007-09-03 | 2010-08-04 | 诺维信公司 | Detoxifying and recycling of washing solution used in pretreatment of lignocellulose-containing materials |
| CN102747654A (en) * | 2012-07-09 | 2012-10-24 | 重庆大学 | Low-dielectric-constant insulating paper and preparation method thereof |
| CN103122592A (en) * | 2011-11-18 | 2013-05-29 | 奎屯新大陆化学有限公司 | Method for preparing microcrystalline cellulose from waste cotton |
| CN106320059A (en) * | 2016-08-23 | 2017-01-11 | 无锡益联机械有限公司 | Method for preparing of insulating paper containing modified montmorillonite |
| CN107227319A (en) * | 2009-12-21 | 2017-10-03 | 诺维信公司 | Method for producing tunning from lignocellulose-containing materials |
-
2018
- 2018-04-22 CN CN201810363639.4A patent/CN108505374B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU376511A1 (en) * | 1971-04-03 | 1973-04-05 | PAPER MASS FOR THE MANUFACTURE OF STABILIZED INSULATION PAPER | |
| SU1286662A1 (en) * | 1985-01-24 | 1987-01-30 | Фабрика "Красный Курсант" Производственного Объединения "Кировбумпром" | Method of producing electric insulation paper |
| CN101796247A (en) * | 2007-09-03 | 2010-08-04 | 诺维信公司 | Detoxifying and recycling of washing solution used in pretreatment of lignocellulose-containing materials |
| CN107227319A (en) * | 2009-12-21 | 2017-10-03 | 诺维信公司 | Method for producing tunning from lignocellulose-containing materials |
| CN103122592A (en) * | 2011-11-18 | 2013-05-29 | 奎屯新大陆化学有限公司 | Method for preparing microcrystalline cellulose from waste cotton |
| CN102747654A (en) * | 2012-07-09 | 2012-10-24 | 重庆大学 | Low-dielectric-constant insulating paper and preparation method thereof |
| CN106320059A (en) * | 2016-08-23 | 2017-01-11 | 无锡益联机械有限公司 | Method for preparing of insulating paper containing modified montmorillonite |
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