CN106758458A - A kind of transformer of heat-resistant stable aramid fiber based insulation paper and preparation method thereof - Google Patents

A kind of transformer of heat-resistant stable aramid fiber based insulation paper and preparation method thereof Download PDF

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Publication number
CN106758458A
CN106758458A CN201611254217.0A CN201611254217A CN106758458A CN 106758458 A CN106758458 A CN 106758458A CN 201611254217 A CN201611254217 A CN 201611254217A CN 106758458 A CN106758458 A CN 106758458A
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parts
aramid fiber
pulp
added
fiber
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CN201611254217.0A
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Chinese (zh)
Inventor
李新满
徐江林
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Tongling Sanjia Transformer Polytron Technologies Inc
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Tongling Sanjia Transformer Polytron Technologies Inc
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Classifications

    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/007—Modification of pulp properties by mechanical or physical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/26—Polyamides; Polyimides
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
    • 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
    • D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D21H15/10—Composite fibres
    • D21H15/12—Composite fibres partly organic, partly inorganic
    • 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
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/52—Epoxy resins
    • 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
    • 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
    • D21H21/143—Agents preventing ageing of paper, e.g. radiation absorbing substances
    • 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
    • D21H21/18—Reinforcing agents
    • 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

Abstract

The present invention discloses a kind of transformer of heat-resistant stable aramid fiber based insulation paper, is made up of the raw material of following weight portion：Aramid fiber 35 50, glass fibre 12 22, chlorosulfonic acid 42 65, POCl3 13 22, ammonium chloride 27, appropriate deionized water, appropriate chloroform, vinyltrimethoxy silane 0.2 1, nano silicon 10 20, appropriate absolute ethyl alcohol, appropriate cyclohexanone, cuprous bromide 12, bipyridyl 36, antioxidant CA 12, sodium cellulose glycolate 25, pectin fiber 25, epoxy resin 37, Glucomannan 0.5 1, polyoxyethylene nonylphenol ether 0.2 0.5.The present invention processes aramid fiber with glass fibre mixing mashing, introduces SO in fiber surface afterwards2Cl groups, with the nanometer titanium dioxide pasc reaction modified through double bond, reach the effect for improving fiber interface caking property, improve the performances such as mechanical performance, corrosion-resistant, high temperature resistant and the intensity of insulating paper, and the dielectric constant of product is low.

Description

A kind of transformer of heat-resistant stable aramid fiber based insulation paper and preparation method thereof
Technical field
It is exhausted with aramid fiber base the present invention relates to transformer technology field, more particularly to a kind of transformer of heat-resistant stable Edge paper and preparation method thereof.
Background technology
Insulating paper is widely used as the insulating materials of the equipment such as motor, cable, capacitor and transformer, be also laminated product, The main composition material of the insulating materials such as composite and preimpregnation material.Due to the specific use of insulating paper, it is desirable to which it must have The characteristic of other paper kinds is different from for some, mainly including mechanical performance, electric property and heat endurance.
Based on B grades, F grades, in some aspect of performance Shortcomings, such as performance is unstable for the insulating board of current China's production Fixed, bad mechanical strength, heat-resisting quantity not enough, loss of properties on aging, the problems such as polluted to environment, had a strong impact on transformer The prospect that equipment develops to miniaturization, high capacity, extra-high voltage.
Zhang Hongrui, Liang Guozheng et al. are at it《The research of hyperbranched polyorganosiloxane graft modification aramid fiber》In one text, choosing Surface is carried out to aramid fiber with hyperbranched polyorganosiloxane to be modified, by situ aggregation method, modification of aramid fiber is obtained（HSi-g- KF）, a large amount of active function groups that hyperbranched polyorganosiloxane (HSis) is carried improve the surface wettability of HSi-g-KF fibers ,- Si-O- and-Si-C- segments then significantly improve the uvioresistant radiation property of HSi-g-KF fibers so that glue on the surface of aramid fiber Knot property, ageing resistance and fire resistance have all been lifted.
Micro/nano level silica (SiO2) tiny balloon has been entrained in macromolecular material polyimides to reduce Dielectric constant, dielectric constant drops to 1.8 from 2.3, and silica relative low price, can obviously reduce cost.So Present invention selection nano silicon is modified to insulating paper, reaches demand of the transformer equipment to miniaturization.
The content of the invention
The object of the invention is exactly to make up the defect of prior art, there is provided a kind of transformer aramid fiber of heat-resistant stable Fiber base insulating paper and preparation method thereof.
A kind of transformer of heat-resistant stable aramid fiber based insulation paper, is made up of the raw material of following weight portion：Aramid fiber Fiber 35-50 parts, glass fibre 12-22 parts, chlorosulfonic acid 42-65 parts, POCl3 13-22 parts, ammonium chloride 2-7 parts, deionization Appropriate amount of water, appropriate chloroform, vinyltrimethoxy silane 0.2-1 parts, nano silicon 10-20 parts, appropriate absolute ethyl alcohol, ring Appropriate hexanone, cuprous bromide 1-2 parts, bipyridyl 3-6 parts, antioxidant CA 1-2 parts, sodium cellulose glycolate 2-5 parts, pectin is fine 2-5 parts, epoxy resin 3-7 parts, Glucomannan 0.5-1 parts, polyoxyethylene nonylphenol ether 0.2-0.5 parts of dimension.
Comprise the following steps that：
（1）Raw fibre is pre-processed：
1. decentralized processing, is carried out to aramid fiber, glass fibre using trough-style pulp beater, deionized water control beating consistency is added In 2-5%, it is placed in thiolysis 3-8 minutes in fiber card breaker, obtains aramid fiber/glass fibre mixing pulp, then will mixing fibre Dimension pulp is placed in vacuum environment, dry dry under the conditions of 98-105 DEG C；
2., above-mentioned dried composite fibre pulp is placed in ultrasonic disperse 2-3 hours in chloroform, adds chlorosulfonic acid to stir at room temperature Reaction 30-50 minute is mixed, ammonium chloride is added while stirring afterwards, oil bath heating is to starting dropwise addition trichlorine oxygen after 70-80 DEG C afterwards Phosphorus, charging terminates rear constant temperature stirring reaction 2-4 hours, and be positioned over the sulfonated oil of lower floor in crystallisation by cooling kettle by static layering, cold But cooled down to less than 25 DEG C, crystallized, filter cake through washing 2-4 time, is dried under vacuum to constant weight by filtering, obtained chlorosulfonation and modify Composite fibre pulp；
（2）Double bond is introduced in nano-silica surface：
It is well mixed during vinyltrimethoxy silane is added into absolute ethyl alcohol, regulation pH value of solution to alkalescent is added after drying Nano silicon stir 10-30 minutes, after be put into water-bath and be heated to reflux, stirring reaction 40-60 minutes, will be by table Nano silicon after the modifier treatment of face takes out, and is put into 95-105 DEG C of baking oven and dries 22-25 hour, obtains surface pair The nano silicon of key modification；
（3）The preparation of graft modification composite fibre pulp：
By step（2）Nano silicon after treatment is added in the four round flask containing cyclohexanone, supersonic oscillations 10- 20 minutes, backward reaction system in add step（1）The composite fibre pulp and cuprous bromide of chlorosulfonation modification, connection pyrrole Pyridine, under nitrogen protection, 25-35 DEG C carries out constant temperature polymerisation, centrifugation after reaction 3-5 hours, product spend from Sub- water cyclic washing repeatedly, constant weight is dried under vacuum in 70-85 DEG C, obtains graft modification composite fibre pulp；
（4）To be added in flask with polyoxyethylene nonylphenol ether, epoxy resin after Glucomannan deionized water dissolving, control bath temperature exists Stirred 30-60 minutes at 70-85 DEG C, add pectin fiber and continue to stir 1-2 hours, then adjust solution ph in neutrality, It is emulsified with mulser, obtains modified epoxy resin emulsion；
（5）By above-mentioned graft modification composite fibre pulp, step（4）Modified epoxy resin emulsion is placed in and 2- is stirred in deionized water 5 hours, it is beaten using beater, mashing is stopped when the beating degree of slurry is to 40 ° of SR, adds deionized water to make slurry Concentration carries out mechanical agitation in 2%, is added thereto to antioxidant CA, sodium cellulose glycolate and is stirred with 300-500 revs/min Mix 30-50 minutes, carry out dehydrating shaping during pulp suspension finally is sent into paper industry former, you can needed for obtaining absolutely Edge paper.
Wherein, described step（4）In Two stage dryer is used to the drying of pulp suspension, the dry temperature of first paragraph is 105-115 DEG C, the dry temperature of second segment is 145-155 DEG C.
Compared with prior art, the present invention has advantages below：
（1）The present invention by aramid fiber and glass fibre mixing mashing treatment, using the excellent properties of glass fibre, answer by preparation Combined paper substantially increases the effect of the aspects such as its mechanical performance, fire-retardant, corrosion-resistant, high temperature resistant and intensity, and can increase substantially The insulating properties of insulating paper, carry out chlorosulfonation treatment using chlorosulfonic acid to pulp afterwards, in fiber surface introducing-SO2Cl groups, It is easy to introduce polar group (- OH ,-NH in fiber surface grafting2,-NHNH2), reach the effect for improving fiber interface caking property.
（2）The present invention is by double bond containing silicone couplet（Vinyltrimethoxy silane）With the silicon of nano-silica surface Hydrogen-based is reacted, and double bond is introduced into nano silicon ion surface, the then-SO with fiber surface2Cl radical reactions, realize grafting Reaction so that nano-silicon dioxide particle is difficult to reunite, and is uniformly dispersed in paper pulp, hence it is evident that the dielectric for reducing insulating paper is normal Number, electrical insulation capability, breakdown voltage are improved, while improving its effect at aspects such as wearability, resistances to ag(e)ing.
（3）The present invention is modified treatment to insulating paper using epoxy resin and pectin fiber, it is possible to increase insulating paper Temperature classification, makes the operating temperature grade of insulating paper improve more than 30 DEG C, and thermal stability, insulating properties and mechanical performance are notable Improve, be that transformer miniaturization and high capacity provide a kind of high performance insulating paper.
Specific embodiment
A kind of transformer of heat-resistant stable aramid fiber based insulation paper, is made up of the raw material of following weight portion：Aramid fiber 45 parts of fiber, 20 parts of glass fibre, 62 parts of chlorosulfonic acid, 19 parts of POCl3,6 parts of ammonium chloride, appropriate deionized water, chloroform is fitted Amount, 0.6 part of vinyltrimethoxy silane, 16 parts of nano silicon, appropriate absolute ethyl alcohol, appropriate cyclohexanone, cuprous bromide 1 Part, 3 parts of bipyridyl, 1 part of antioxidant CA, 4 parts of sodium cellulose glycolate, 4 parts of pectin fiber, 5 parts of epoxy resin, Glucomannan 0.7 part, 0.4 part of polyoxyethylene nonylphenol ether.
Comprise the following steps that：
（1）Raw fibre is pre-processed：
1. decentralized processing, is carried out to aramid fiber, glass fibre using trough-style pulp beater, deionized water control beating consistency is added 2%, thiolysis 5 minutes in fiber card breaker are placed in, obtain aramid fiber/glass fibre mixing pulp, then starch composite fibre The dregs of rice are placed in vacuum environment, dry dry under the conditions of 100 DEG C；
2. above-mentioned dried composite fibre pulp, is placed in ultrasonic disperse 3 hours in chloroform, chlorosulfonic acid stirring is added at room temperature Reaction 40 minutes, adds ammonium chloride while stirring afterwards, and oil bath heating is to starting after 75 DEG C that POCl3, charging knot is added dropwise afterwards Be positioned over the sulfonated oil of lower floor in crystallisation by cooling kettle by constant temperature stirring reaction 3 hours after beam, static layering, be cooled to 25 DEG C with Under cooled down, crystallized, filter cake through washing 3 times, is dried under vacuum to constant weight by filtering, obtains the composite fibre slurry of chlorosulfonation modification The dregs of rice；
（2）Double bond is introduced in nano-silica surface：
It is well mixed during vinyltrimethoxy silane is added into absolute ethyl alcohol, regulation pH value of solution to alkalescent is added after drying Nano silicon stir 20 minutes, after be put into water-bath and be heated to reflux, stirring reaction 50 minutes will be modified by surface Nano silicon after agent treatment takes out, and is put into 100 DEG C of baking oven and dries 24 hours, obtains the nanometer of surface double-bond modification Silica；
（3）The preparation of graft modification composite fibre pulp：
By step（2）Nano silicon after treatment is added in the four round flask containing cyclohexanone, supersonic oscillations 15 Minute, backward reaction system in add step（1）The composite fibre pulp and cuprous bromide, bipyridyl of chlorosulfonation modification, Under nitrogen protection, 30 DEG C carry out constant temperature polymerisation, centrifugation after reacting 4 hours, and product deionized water is repeatedly Washing is multiple, and constant weight is dried under vacuum in 80 DEG C, obtains graft modification composite fibre pulp；
（4）To be added in flask with polyoxyethylene nonylphenol ether, epoxy resin after Glucomannan deionized water dissolving, control bath temperature exists Stirred 50 minutes at 80 DEG C, add pectin fiber and continue to stir 2 hours, then adjust solution ph in neutrality, use mulser It is emulsified, obtains modified epoxy resin emulsion；
（5）By above-mentioned graft modification composite fibre pulp, step（4）Modified epoxy resin emulsion is placed in and 2- is stirred in deionized water 5 hours, it is beaten using beater, mashing is stopped when the beating degree of slurry is to 40 ° of SR, adds deionized water to make slurry Concentration carries out mechanical agitation in 2%, is added thereto to antioxidant CA, sodium cellulose glycolate and is stirred 40 with 400 revs/min Minute, carry out dehydrating shaping during pulp suspension finally is sent into paper industry former, you can obtain required insulating paper.
Wherein, described step（4）In Two stage dryer is used to the drying of pulp suspension, the dry temperature of first paragraph is 110 DEG C, the dry temperature of second segment is 150 DEG C.
According to insulating paper manufactured in the present embodiment, its performance test is as follows：
Breakdown voltage（In air）：14.8KV；Fire-retardant rank：V0Level；Dielectric constant：3.1；, dielectric dissipation factor：0.043；It is anti- Tensile strength：Longitudinal 83Mpa, horizontal 42Mpa；
Water content：< 8.0% ；Oil absorbency：> 15% ；Coefficient of thermal expansion（120℃）：< 0.6.

Claims (3)

1. a kind of transformer of heat-resistant stable aramid fiber based insulation paper, it is characterised in that by the raw material of following weight portion Composition：Aramid fiber 35-50 parts, glass fibre 12-22 parts, chlorosulfonic acid 42-65 parts, POCl3 13-22 parts, ammonium chloride 2-7 Part, appropriate deionized water, appropriate chloroform, vinyltrimethoxy silane 0.2-1 parts, nano silicon 10-20 parts, anhydrous second Appropriate alcohol, appropriate cyclohexanone, cuprous bromide 1-2 parts, bipyridyl 3-6 parts, antioxidant CA 1-2 parts, sodium cellulose glycolate 2-5 Part, pectin fiber 2-5 parts, epoxy resin 3-7 parts, Glucomannan 0.5-1 parts, polyoxyethylene nonylphenol ether 0.2-0.5 parts.
2. the transformer of a kind of heat-resistant stable according to claims 1 preparation side of aramid fiber based insulation paper Method, it is characterised in that comprise the following steps that：
（1）Raw fibre is pre-processed：
1. decentralized processing, is carried out to aramid fiber, glass fibre using trough-style pulp beater, deionized water control beating consistency is added In 2-5%, it is placed in thiolysis 3-8 minutes in fiber card breaker, obtains aramid fiber/glass fibre mixing pulp, then will mixing fibre Dimension pulp is placed in vacuum environment, dry dry under the conditions of 98-105 DEG C；
2., above-mentioned dried composite fibre pulp is placed in ultrasonic disperse 2-3 hours in chloroform, adds chlorosulfonic acid to stir at room temperature Reaction 30-50 minute is mixed, ammonium chloride is added while stirring afterwards, oil bath heating is to starting dropwise addition trichlorine oxygen after 70-80 DEG C afterwards Phosphorus, charging terminates rear constant temperature stirring reaction 2-4 hours, and be positioned over the sulfonated oil of lower floor in crystallisation by cooling kettle by static layering, cold But cooled down to less than 25 DEG C, crystallized, filter cake through washing 2-4 time, is dried under vacuum to constant weight by filtering, obtained chlorosulfonation and modify Composite fibre pulp；
（2）Double bond is introduced in nano-silica surface：
It is well mixed during vinyltrimethoxy silane is added into absolute ethyl alcohol, regulation pH value of solution to alkalescent is added after drying Nano silicon stir 10-30 minutes, after be put into water-bath and be heated to reflux, stirring reaction 40-60 minutes, will be by table Nano silicon after the modifier treatment of face takes out, and is put into 95-105 DEG C of baking oven and dries 22-25 hour, obtains surface pair The nano silicon of key modification；
（3）The preparation of graft modification composite fibre pulp：
By step（2）Nano silicon after treatment is added in the four round flask containing cyclohexanone, supersonic oscillations 10- 20 minutes, backward reaction system in add step（1）The composite fibre pulp and cuprous bromide of chlorosulfonation modification, connection pyrrole Pyridine, under nitrogen protection, 25-35 DEG C carries out constant temperature polymerisation, centrifugation after reaction 3-5 hours, product spend from Sub- water cyclic washing repeatedly, constant weight is dried under vacuum in 70-85 DEG C, obtains graft modification composite fibre pulp；
（4）To be added in flask with polyoxyethylene nonylphenol ether, epoxy resin after Glucomannan deionized water dissolving, control bath temperature exists Stirred 30-60 minutes at 70-85 DEG C, add pectin fiber and continue to stir 1-2 hours, then adjust solution ph in neutrality, It is emulsified with mulser, obtains modified epoxy resin emulsion；
（5）By above-mentioned graft modification composite fibre pulp, step（4）Modified epoxy resin emulsion is placed in and 2- is stirred in deionized water 5 hours, it is beaten using beater, mashing is stopped when the beating degree of slurry is to 40 ° of SR, adds deionized water to make slurry Concentration carries out mechanical agitation in 2%, is added thereto to antioxidant CA, sodium cellulose glycolate and is stirred with 300-500 revs/min Mix 30-50 minutes, carry out dehydrating shaping during pulp suspension finally is sent into paper industry former, you can needed for obtaining absolutely Edge paper.
3. the transformer of a kind of heat-resistant stable according to claims 2 preparation side of aramid fiber based insulation paper Method, it is characterised in that described step（4）In Two stage dryer, the dry temperature of first paragraph are used to the drying of pulp suspension It it is 105-115 DEG C, the dry temperature of second segment is 145-155 DEG C.
CN201611254217.0A 2016-12-30 2016-12-30 A kind of transformer of heat-resistant stable aramid fiber based insulation paper and preparation method thereof Withdrawn CN106758458A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110016838A (en) * 2019-02-25 2019-07-16 薛向东 A kind of preparation method of stable type Composite aramid fiber insulating paper
CN111608002A (en) * 2020-04-17 2020-09-01 仙鹤股份有限公司 Preparation method of carbonization-free solid capacitor paper

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105355267A (en) * 2015-11-04 2016-02-24 铜陵三佳变压器有限责任公司 Insulation paper containing glass fiber used for transformer
CN105350390A (en) * 2015-11-04 2016-02-24 铜陵三佳变压器有限责任公司 Preparation of corundum fiber insulating paper for transformers
CN105421141A (en) * 2015-11-04 2016-03-23 铜陵三佳变压器有限责任公司 Transformer applicable insulating paper with good high temperature resistance level

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105355267A (en) * 2015-11-04 2016-02-24 铜陵三佳变压器有限责任公司 Insulation paper containing glass fiber used for transformer
CN105350390A (en) * 2015-11-04 2016-02-24 铜陵三佳变压器有限责任公司 Preparation of corundum fiber insulating paper for transformers
CN105421141A (en) * 2015-11-04 2016-03-23 铜陵三佳变压器有限责任公司 Transformer applicable insulating paper with good high temperature resistance level

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110016838A (en) * 2019-02-25 2019-07-16 薛向东 A kind of preparation method of stable type Composite aramid fiber insulating paper
CN111608002A (en) * 2020-04-17 2020-09-01 仙鹤股份有限公司 Preparation method of carbonization-free solid capacitor paper

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