CN106320059B - A kind of preparation method of the insulating paper containing modified montmorillonoid - Google Patents
A kind of preparation method of the insulating paper containing modified montmorillonoid Download PDFInfo
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- CN106320059B CN106320059B CN201610708634.1A CN201610708634A CN106320059B CN 106320059 B CN106320059 B CN 106320059B CN 201610708634 A CN201610708634 A CN 201610708634A CN 106320059 B CN106320059 B CN 106320059B
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- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- 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
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/52—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials wood; paper; press board
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Paper (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a kind of preparation method of the insulating paper containing modified montmorillonoid, comprise the following steps：Concentrate paper pulp preparation, prepared by modified montmorillonoid, prepared by modified filler and prepared by insulating paper.Compared with prior art, the present invention has advantages below：(1) present invention makes modification by modified montmorillonoid first, then to the filler of insulating paper, can significantly improve the breakdown strength of insulating paper, reduce the relative dielectric constant of insulating paper, effectively suppresses the generation and development of Oil-Paper Insulation shelf depreciation；(2) uniformly in insulating paper, can not there is no intercalation or splitting phenomenon by physical dispersion by the modified montmorillonite of the present invention and insulation paper wadding.
Description
Technical field
The invention belongs to transposed conductor core packaging material field, it is related to a kind of insulating paper, more particularly to it is a kind of containing changing
The preparation method of the insulating paper of property montmorillonite.
Background technology
Cellulose insulation paper is one of most widely used interior insulation material in oil-immersed power transformer, due to the runtime
Between can not change, the quality of its machinery and insulating properties directly decides service life of transformer.In real transformer, insulation
Paper is acted on by high electrical-field stressing for a long time, once breakdown, which occurs, will cause transformer fault.If lifting insulating paper
Electric property, the usage amount of insulating paper can be saved, extend the working life of insulating paper, reduced the width of transformer oil clearance, enter
And the volume and core loss of limiting transformer.Therefore, the study on the modification for carrying out insulating paper is significant.
Montmorillonite is a kind of current laminar silicic acid salt additives quite favored by material supply section educational circles, have bigger serface,
The features such as high surface and high intensity, the macromolecule polymeric materials such as epoxy resin, polyethylene and polypropylene have been widely used in it
In, show excellent electric property.Dielectric properties of the ginseng text to Epoxy Resin/Montmorillonite (EP/MMT) nano composite material
Studied, the results showed that, compared with unmodified pure EP, the relative dielectric constant and dielectric of EP/MMT nano composite materials
Loss value has different degrees of reduction, and MMT doping has slowed down composite dielectric loss with the increased speed of temperature.
Ginseng text has inquired into the electrical treeing performance and direct current of pure low density polyethylene (LDPE) (LDPE) and different LDPE/MMT samples
Space charge polar effect finds to add compatilizer to the affecting laws of various sample electricity tree characteristic under pre- electric field action
LDPE/MMT nano composite materials can preferably suppress the speed of growth of electric branch, and show the space different from pure LDPE
Charge polarity effect.
Ginseng text analyzes the electric branch growth course and shelf depreciation system of the lower LDPE/MMT nano composite materials of constant pressure effect
Characteristic is counted, result of the test is shown, after with the addition of MMT particles, the electric branch partial discharge quantity of LDPE/MMT composites and electric discharge
Repetitive rate reduces, and growth of the electric branch along direction of an electric field has obtained effective suppression.Join literary system research LDPE/MMT and friendship
Conductance property, electrical treeing characteristic, electrical breakdown and the resistance to partial discharge for joining polyethylene/montmorillonite (XLPE/MMT) nano composite material are special
Property and space charge characteristic, it is found that the related electric performance of polymer can be effectively improved and improve by adding certain content MMT.
However, up to the present, the research that cellulose insulation paper is modified also is rarely reported using MMT.Existing skill
In art, existing laboratory is modified using MMT to cellulose insulation paper, and octadecyl ammonium chloride and silicon are used in modifying process
Alkane coupling agent carries out organic-treating to MMT.As a result the breakdown strength of insulating paper can be significantly improved by showing MMT addition, drop
The relative dielectric constant of low insulation paper, effectively suppress the generation and development of Oil-Paper Insulation shelf depreciation.But only with
The insulating paper some of which active component that this method prepares fails to be uniformly distributed with paper, causing performance unstable.
The content of the invention
Present invention solves the technical problem that：The defects of in order to solve in the prior art, a kind of electric property stabilization is obtained, and
The breakdown strength of insulating paper can be significantly improved, reduces the relative dielectric constant of insulating paper, effectively suppresses Oil-Paper Insulation office
The generation of portion's electric discharge and the insulating paper of development, the present invention provide a kind of preparation method of the insulating paper containing modified montmorillonoid.
Technical scheme：A kind of preparation method of the insulating paper containing modified montmorillonoid, is comprised the steps of：
It is prepared by the 1st step, concentration paper pulp：Paste mill grinding is delivered to after cardboard is cracked by pulper, the fiberizer
Source of the gas is 0.5~1.2MPa, the linear speed difference between chassis and rotor is 5.9~7.5m/s, voltage is 400~520V, three-phase is
55~65Hz, beating pressure are 1.8~4.2kg/cm；Discongest processing using fluffer, then paper pulp after processing will be discongested
Concentration is concentrated into 4.8~5.6%；
It is prepared by the 2nd step, modified montmorillonoid：By weight, by 19~42 parts of montmorillonite, 11~17 parts of nano zine oxide,
22~38 parts of 7~16 parts of sodium chloride, 6~12 parts of sodium hydroxide, 1~7 part of magnesium sulfate, water mixing, suspension progress machinery is stirred
Mix scattered, rotating speed is 5000~6400r/min, stirring 10~16 minutes, then ultrasonic disperse 14~18 minutes obtain it is modified cover it is de-
Soil；
It is prepared by the 3rd step, modified filler：By weight, by 30~70 parts of modified montmorillonoid, nano silicon 14~35
Part, bamboo fibre 7~19 and lignin 2~13 mix, stirring reaction is abundant in autoclave, reaction condition is 2.4~
3.7MPa, 173~265 DEG C, the reaction time is 12~35 minutes；
It is prepared by the 4th step, insulating paper：Modified filler made from 3rd step is mixed with the concentration paper pulp that low 1 step obtains, solved
Stirred 12~18 minutes from device, it is 110~140g/m mixture to be placed in sheet forming apparatus quality is made2, thickness be
0.15~0.26mm l Water Paper base；
5th step, the l Water Paper base for preparing the 4th step are sent into hot pressing in hot press, and hot pressing condition is 17~29MPa, 10
~22 minutes, it is subsequently placed in vacuum drying chamber and dries, vacuum is 0.01~0.02MPa, and temperature is 92~114 DEG C, is made
Insulating paper containing modified montmorillonoid.
Preferably, prepared by the 1st step, concentration paper pulp：Paste mill grinding, the mill are delivered to after cardboard is cracked by pulper
The source of the gas of pulp grinder is 0.8MPa, the linear speed difference between chassis and rotor is 6.9m/s, voltage 480V, three-phase 60Hz, mashing
Pressure is 3.8kg/cm；Discongest processing using fluffer, then the concentration for discongesting paper pulp after processing is concentrated into 5.2%.
Preferably, prepared by the 2nd step, modified montmorillonoid：By weight, by 36 parts of montmorillonite, 13 parts of nano zine oxide, chlorine
Change 31 parts of 12 parts of sodium, 9 parts of sodium hydroxide, 5 parts of magnesium sulfate, water mixing, suspension progress mechanical agitation is disperseed, rotating speed is
6000r/min, stirring 13 minutes, then ultrasonic disperse obtain modified montmorillonoid in 16 minutes.
Preferably, prepared by the 3rd step, modified filler：By weight, by 56 parts of modified montmorillonoid, nano silicon 28
Part, bamboo fibre 16 and lignin 11 mix, stirring reaction is abundant in autoclave, reaction condition 3.2MPa, 245 DEG C, instead
It is 28 minutes between seasonable.
Preferably, prepared by the 4th step, insulating paper：The concentration paper pulp that modified filler made from 3rd step obtains with low 1 step is mixed
Close, stirred 17 minutes in dissociation device, it is 130g/m mixture to be placed in sheet forming apparatus quality is made2, thickness be
0.24mm l Water Paper base.
Preferably, hot pressing in the 5th step, the l Water Paper base feeding hot press for preparing the 4th step, hot pressing condition 26MPa,
17 minutes, it is subsequently placed in vacuum drying chamber and dries, vacuum 0.016MPa, temperature is 106 DEG C, is made and is taken off containing modified cover
The insulating paper of soil.
Beneficial effect：(1) present invention makes modification, Neng Gouxian by modified montmorillonoid first, then to the filler of insulating paper
The breakdown strength for improving insulating paper is write, the relative dielectric constant of insulating paper is reduced, effectively suppresses Oil-Paper Insulation shelf depreciation
Generation and development；(2) uniformly physical dispersion can insulated by the modified montmorillonite of the present invention and insulation paper wadding
In paper, there is no intercalation or splitting phenomenon.
Embodiment
Embodiment 1
A kind of preparation method of the insulating paper containing modified montmorillonoid, is comprised the steps of：
It is prepared by the 1st step, concentration paper pulp：Paste mill grinding is delivered to after cardboard is cracked by pulper, the fiberizer
Source of the gas is 0.5MPa, the linear speed difference between chassis and rotor is 5.9m/s, voltage 400V, three-phase 55Hz, beating pressure are
1.8kg/cm；Discongest processing using fluffer, then the concentration for discongesting paper pulp after processing is concentrated into 4.8%；
It is prepared by the 2nd step, modified montmorillonoid：By weight, by 19 parts of montmorillonite, 11 parts of nano zine oxide, sodium chloride 7
22 parts of part, 6 parts of sodium hydroxide, 1 part of magnesium sulfate, water mixing, suspension progress mechanical agitation is disperseed, rotating speed 5000r/min,
Stirring 10 minutes, then ultrasonic disperse obtain modified montmorillonoid in 14 minutes；
It is prepared by the 3rd step, modified filler：By weight, it is 30 parts of modified montmorillonoid, 14 parts of nano silicon, bamboo is fine
Dimension 7 and lignin 2 mix, and stirring reaction is abundant in autoclave, reaction condition 2.4MPa, 173 DEG C, the reaction time 12
Minute；
It is prepared by the 4th step, insulating paper：Modified filler made from 3rd step is mixed with the concentration paper pulp that low 1 step obtains, solved
Stirred 12 minutes from device, it is 110g/m mixture to be placed in sheet forming apparatus quality is made2, thickness be 0.15mm l Water Paper
Base；
5th step, the l Water Paper base for preparing the 4th step are sent into hot pressing in hot press, hot pressing condition 17MPa, 10 minutes,
It is subsequently placed in vacuum drying chamber and dries, vacuum 0.01MPa, temperature is 92 DEG C, and the insulation containing modified montmorillonoid is made
Paper.
Embodiment 2
A kind of preparation method of the insulating paper containing modified montmorillonoid, is comprised the steps of：
It is prepared by the 1st step, concentration paper pulp：Paste mill grinding is delivered to after cardboard is cracked by pulper, the fiberizer
Source of the gas is 0.8MPa, the linear speed difference between chassis and rotor is 6.9m/s, voltage 480V, three-phase 60Hz, beating pressure are
3.8kg/cm；Discongest processing using fluffer, then the concentration for discongesting paper pulp after processing is concentrated into 5.2%；
It is prepared by the 2nd step, modified montmorillonoid：By weight, by 36 parts of montmorillonite, 13 parts of nano zine oxide, sodium chloride 12
31 parts of part, 9 parts of sodium hydroxide, 5 parts of magnesium sulfate, water mixing, suspension progress mechanical agitation is disperseed, rotating speed 6000r/min,
Stirring 13 minutes, then ultrasonic disperse obtain modified montmorillonoid in 16 minutes；
It is prepared by the 3rd step, modified filler：By weight, it is 56 parts of modified montmorillonoid, 28 parts of nano silicon, bamboo is fine
Dimension 16 and lignin 11 mix, and stirring reaction is abundant in autoclave, reaction condition 3.2MPa, 245 DEG C, and the reaction time is
28 minutes；
It is prepared by the 4th step, insulating paper：Modified filler made from 3rd step is mixed with the concentration paper pulp that low 1 step obtains, solved
Stirred 17 minutes from device, it is 130g/m mixture to be placed in sheet forming apparatus quality is made2, thickness be 0.24mm l Water Paper
Base；
5th step, the l Water Paper base for preparing the 4th step are sent into hot pressing in hot press, hot pressing condition 26MPa, 17 minutes,
It is subsequently placed in vacuum drying chamber and dries, vacuum 0.016MPa, temperature is 106 DEG C, is made and contains the exhausted of modified montmorillonoid
Edge paper.
Embodiment 3
A kind of preparation method of the insulating paper containing modified montmorillonoid, is comprised the steps of：
It is prepared by the 1st step, concentration paper pulp：Paste mill grinding is delivered to after cardboard is cracked by pulper, the fiberizer
Source of the gas is 1.2MPa, the linear speed difference between chassis and rotor is 7.5m/s, voltage 520V, three-phase 65Hz, beating pressure are
4.2kg/cm；Discongest processing using fluffer, then the concentration for discongesting paper pulp after processing is concentrated into 5.6%；
It is prepared by the 2nd step, modified montmorillonoid：By weight, by 42 parts of montmorillonite, 17 parts of nano zine oxide, sodium chloride 16
38 parts of part, 12 parts of sodium hydroxide, 7 parts of magnesium sulfate, water mixing, suspension progress mechanical agitation are disperseed, rotating speed 6400r/
Min, stirring 16 minutes, then ultrasonic disperse obtain modified montmorillonoid in 18 minutes；
It is prepared by the 3rd step, modified filler：By weight, it is 70 parts of modified montmorillonoid, 35 parts of nano silicon, bamboo is fine
Dimension 19 and lignin 13 mix, and stirring reaction is abundant in autoclave, reaction condition 3.7MPa, 265 DEG C, and the reaction time is
35 minutes；
It is prepared by the 4th step, insulating paper：Modified filler made from 3rd step is mixed with the concentration paper pulp that low 1 step obtains, solved
Stirred 18 minutes from device, it is 140g/m mixture to be placed in sheet forming apparatus quality is made2, thickness be 0.26mm l Water Paper
Base；
5th step, the l Water Paper base for preparing the 4th step are sent into hot pressing in hot press, hot pressing condition 29MPa, 22 minutes,
It is subsequently placed in vacuum drying chamber and dries, vacuum 0.02MPa, temperature is 114 DEG C, and the insulation containing modified montmorillonoid is made
Paper.
The performance of the insulating paper of the modified montmorillonoid prepared to embodiment 1~3 detects, wherein the anti-tensile of paper
The measurement of intensity is using the AT-L-1 type tensile testing machines of Jinan An Nimaite Instrument Ltd., maximum pull 500N.According to
ISO1924-2:1994th, constant rate of extension method measures in GB/T 12914-2008, principle：Tensile strength test instrument is in constant rate of extension
Under conditions of, the sample of given size is stretched to fracture, determines its tension stress.The wide 15mm of sample, tensile testing machine folder away from
10cm, rupture time are (20 ± 5) s.
The breakdown voltage test of paper, insulating paper power frequency disruptive field intensity is carried out according to GB/T 1408-2006, using No. 25
Mineral oil is as surrounding media, 10~20s breakdown strengths of sample when test insulating paper continuously boosts.Test transform capacity is
50kVA/50kV, test voltage 220V, rate of rise 500V/s.Measurement sample quantities 6 every time, last averaged.
25 DEG C of test ambient temperature, relative temperature 50%.
Insulating paper dielectric properties are exhausted using Concept80 broadband dielectrics spectrum testing system (Novocontrol GmbH) test
Volume conductance in the dielectric spectroscopy of edge paper, frequency domain dielectric loss spectrum and frequency domain；Insulated simultaneously according to the standard testings of IEC 60093
Paper direct current volume conductance.The insulating paper for soaking good oil is taken out from oil, excess surface insulating oil is cleaned, is placed on two panels diameter
Measured among 4cm gold-plated copper electrode.Measurement frequency scope is 10-2~107.For guarantee test repeatability, every time experiment
Test 2~3 times, and in order to exclude contingency, what duplicate measurements used is not that same sample is tested, but to same
The sample of kind of state, which carries out test 2~3 times, to be chosen the good data of repeatability and is analyzed.
As a result it is as shown in the table：
Claims (1)
1. a kind of preparation method of the insulating paper containing modified montmorillonoid, it is characterised in that comprise the steps of：
It is prepared by the 1st step, concentration paper pulp：Paste mill grinding, the source of the gas of the fiberizer are delivered to after cardboard is cracked by pulper
Linear speed difference between 0.8MPa, chassis and rotor is 6.9m/s, voltage 480V, three-phase 60Hz, beating pressure are
3.8kg/cm；Discongest processing using fluffer, then the concentration for discongesting paper pulp after processing is concentrated into 5.2%；
It is prepared by the 2nd step, modified montmorillonoid：By weight, by 36 parts of montmorillonite, 13 parts of nano zine oxide, 12 parts of sodium chloride, hydrogen
31 parts of 9 parts of sodium oxide molybdena, 5 parts of magnesium sulfate, water mixing, suspension progress mechanical agitation are disperseed, rotating speed 6000r/min, stirring
13 minutes, then 16 minutes acquisition modified montmorillonoids of ultrasonic disperse；
It is prepared by the 3rd step, modified filler：By weight, by 56 parts of modified montmorillonoid, 28 parts of nano silicon, bamboo fibre 16
Part and the mixing of 11 parts of lignin, stirring reaction is abundant in autoclave, reaction condition 3.2MPa, 245 DEG C, the reaction time
For 28 minutes；
It is prepared by the 4th step, insulating paper：Modified filler made from 3rd step is mixed with the concentration paper pulp that the 1st step obtains, in dissociation device
Middle stirring 17 minutes, it is 130g/m mixture to be placed in sheet forming apparatus quality is made2, thickness be 0.24mm l Water Paper base；
5th step, the l Water Paper base for preparing the 4th step are sent into hot pressing in hot press, hot pressing condition 26MPa, 17 minutes, then
It is placed in vacuum drying chamber and dries, vacuum is 0.016 MPa, and temperature is 106 DEG C, and the insulation containing modified montmorillonoid is made
Paper.
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| CN108505374B (en) * | 2018-04-22 | 2019-11-08 | 江苏源清环保科技有限公司 | A kind of preparation method of modified cellulose insulating paper |
| CN110752073B (en) * | 2019-11-01 | 2021-01-12 | 深圳联颖通讯有限公司 | Preparation method of cable insulation failure repair material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131494A (en) * | 2014-07-29 | 2014-11-05 | 哈尔滨理工大学 | Nonlinear insulation board based on nano modification and preparation method thereof |
| CN105568774A (en) * | 2015-12-17 | 2016-05-11 | 华南理工大学 | High-performance oil-immersed insulation paper and preparation method and application thereof |
| CN105696408A (en) * | 2016-04-05 | 2016-06-22 | 哈尔滨理工大学 | Nano modified paper based on surface modification and preparation method thereof |
| WO2016112523A1 (en) * | 2015-01-16 | 2016-07-21 | 阿尔斯通技术有限公司 | Nanometer aluminium oxide modified insulation paper and preparation method thereof |
-
2016
- 2016-08-23 CN CN201610708634.1A patent/CN106320059B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131494A (en) * | 2014-07-29 | 2014-11-05 | 哈尔滨理工大学 | Nonlinear insulation board based on nano modification and preparation method thereof |
| WO2016112523A1 (en) * | 2015-01-16 | 2016-07-21 | 阿尔斯通技术有限公司 | Nanometer aluminium oxide modified insulation paper and preparation method thereof |
| CN105568774A (en) * | 2015-12-17 | 2016-05-11 | 华南理工大学 | High-performance oil-immersed insulation paper and preparation method and application thereof |
| CN105696408A (en) * | 2016-04-05 | 2016-06-22 | 哈尔滨理工大学 | Nano modified paper based on surface modification and preparation method thereof |
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