CN106283834A - A kind of preparation method of high intensity aramid fiber insulation laminate - Google Patents
A kind of preparation method of high intensity aramid fiber insulation laminate Download PDFInfo
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- CN106283834A CN106283834A CN201610767811.3A CN201610767811A CN106283834A CN 106283834 A CN106283834 A CN 106283834A CN 201610767811 A CN201610767811 A CN 201610767811A CN 106283834 A CN106283834 A CN 106283834A
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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
- 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
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- 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
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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
- 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
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Abstract
The invention discloses the preparation method of a kind of high intensity aramid fiber insulation laminate, its step is as follows: discongested in water respectively with meta-aramid fibre fibrid by two kinds of meta-aramid chopped strands, utilize slope screen former to carry out wet method after mixing to manufacture paper with pulp shaping, in molding device, use ultrasonic Treatment；Batched by lamination roller after wet web is squeezed, launch on a conveyor after cut-out, form l Water Paper base, and carry out segmentation hot pressing by feeding trolley feeding plate-type hot-pressing machine；Unload plate after cooling and enter semi-finished product room Balance Treatment, trimming ornamenting, finally give high intensity aramid fiber insulation laminate product.Aramid fiber insulation laminate obtained by the present invention is made up of pure meta-aramid fibers, its thickness 0.8～10mm, density 0.7～1.0g/cc, dimensional accuracy is high, possess mechanical strength and the dielectric property of excellence, temperature resistant grade is high, and good to oil and permeability and the compatibility painted, it is possible to be widely used in the power equipment such as motor, transformator.
Description
Technical field
The invention belongs to paper industry and insulation industry crossing domain, be specifically related to a kind of high intensity aramid fiber insulation laminate
Preparation method.
Background technology
Aramid fiber insulation laminate is with meta-aramid fibers as primary raw material, is manufactured paper with pulp by wet method and laminate presses technique system
Standby High Performance Insulation material.Because it possesses prominent mechanical strength, insulation characterisitic and resistance to elevated temperatures, and to oil and
Paint has good permeability and the compatibility, can become as pad, end circle, stay, square ring, bolt, screw rod, pressure ring, insulating cylinder etc.
The structural member of type part and some oil immersion equipment and be applied in the power equipment such as motor, transformator, market prospect is the most wide.
Meta-aramid fibers has insulating properties and the thermal stability of high intensity, high-modulus and excellence, is to prepare resistance to height
The preferred material of temperature insulating laminated sheet.Surface inertness yet with aramid fiber is strong, is difficult to combine, insulating barrier simultaneously between fiber
The thickness of pressing plate is greatly quantitatively high, uses laminate mechanical strength and insulation characterisitic pole that the preparation method of conventional laminates produced
Low, and be easily delaminated, it is impossible to meeting the requirement of reality application, it is higher that it prepares difficulty, and current patent relates to less, mainly
Use to join with lumber fibre and copy or the method for resin dipping enhancing.
Chinese patent CN:201310418332.7 proposes the ppta-pulp fibre of 20～70% is carried out graft modification, then
Mix to join with the lumber fibre of 30～80% and copy, use vacuum laminator to prepare compound inslation laminate, be effectively increased machinery
Intensity, and reduce dielectric constant, meet the use requirement of extra-high voltage transformer.
Chinese patent CN:00810718.1 use 60～the chopped strand of 97% and 3～40% meta-aramid pulp fine
Dimension prepares aramid paper, and uses thermosetting resin to carry out impregnating rear fender.The aramid layers laminate layer pressing plate that the method is prepared is main
Being applied in circuit board, mechanical strength and dielectric properties are preferable.
Chinese patent CN:200710050007.4 proposes to contain heteroaromatic aramid fiber and thermosetting resin composite membrane-forming,
Again by hot-forming for multilayer film superposition, the laminate layers strength of compressive plate prepared is big, light weight, and anti-flammability and good insulating can be used for
Low-temperature insulation field.
Its mechanical strength and insulation characterisitic are served certain by the insulating laminated sheet preparation method that above-mentioned patent is introduced
Potentiation, but there is also that temperature classification is low and the problem such as poor compatibility.Wherein, lumber fibre is at high temperature, moisture content, oxygen and oil
It is prone to degraded under the common effect of middle acid compound, thus greatly reduces product service life；And the existence of resin can cause
The thermostability of insulating laminated sheet declines, and damages its permeability to oil and painted and compatibility simultaneously, this severely limits insulating barrier
The application of pressing plate.Therefore, use pure meta-aramid fibers to prepare insulating laminated sheet and become technology trends.
Wild the most emerging etc. rugged describing will carry out High Temperature High Pressure after dry meta-position aramid fiber paper multilayer build-up so that it is local produces
Melt bonded, thus prepare pure aramid fiber insulation laminate, thermostability is greatly improved.But this method needs the biggest labor
Power and time, prepared laminate dimensional accuracy is low, and ply adhesion is insufficient, shows as when bending machining, and is produced from inner side
Raw delamination, chaps in outside.
United States Patent (USP) US:5089088 use 20～95% meta-aramid fibre fibrid and 5～80% meta-aramid chopped fine
Dimension prepares aramid fiber wet web, carries out hot-pressing processing, temperature 100～200 DEG C, then added by laminate after being overlapped by multilamellar wet web
Wet to water content 5～25%, then carry out secondary hot pressing process, temperature 200～315 DEG C, finally prepare density 0.14～0.45g/
The pure aramid fiber insulation laminate of cc.Laminate prepared by the method is heat-resist, highlights the absorbability of oil and paint, efficient solution
The problem that ply adhesion of having determined is not enough, but its density is little, and mechanical strength is relatively low.
Along with the development of science and technology, the equipment such as motor, transformator is towards miniaturization, high capacity, safe and reliableization
Direction is developed, and actual application Midst density is that 0.7～1.0g/cc high-strength insulating laminate demand is relatively big, but relevant report is relatively
Few.And on market there is the problems such as performance is not enough, be easily delaminated, dimensional accuracy is the highest in existing product, it is difficult to meet application
Requirement.
Summary of the invention
It is an object of the invention to provide the preparation method of a kind of high intensity aramid fiber insulation laminate, above-mentioned existing to overcome
The defect that technology exists, aramid fiber insulation laminate thickness 0.8～10mm prepared by the present invention, density 0.7～1.0g/cc, size
Precision is high, possesses mechanical strength and the insulation characterisitic of excellence, and temperature resistant grade is high, and has excellent permeability and compatible to oil and paint
Property.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of preparation method of high intensity aramid fiber insulation laminate, described aramid fiber insulation laminate thickness 0.8～10mm, close
Degree 0.7～1.0g/cc, comprises the following steps:
(1) meta-aramid chopped strand A, meta-aramid chopped strand B and meta-aramid fibre fibrid are discongested in water
Rear mixing, described meta-aramid chopped strand A is high-strength high-modulus fibre, length 4～10mm, fiber number 1.5～2.5D；Meta virtue
Synthetic fibre chopped strand B is as-spun fibre, length 1～3mm, fiber number 0.5～1.0D；
(2) utilize slope screen former to carry out wet method to manufacture paper with pulp shaping, concentration 0.005～0.02% of surfing the Net, use in molding device
Ultrasonic Treatment, frequency is 50～100kHz；
(3) wet web is squeezed to moisture content 70～90%, batch wet web by lamination roller, after cut-out on a conveyor
Launch, form l Water Paper base, and send into plate-type hot-pressing machine and carry out segmentation hot pressing；
(4) unload plate after cooling and enter semi-finished product room Balance Treatment, then trimming ornamenting, finally give aramid fiber insulation laminate
Product.
Further, meta-aramid chopped strand A, meta-aramid chopped strand B and the consumption of meta-aramid fibre fibrid
It is respectively as follows:
A () meta-aramid chopped strand A, relative to over dry gross mass 30～70%；
B () meta-aramid chopped strand B, relative to over dry gross mass 0～20%；
C () meta-aramid fibre fibrid, relative to over dry gross mass 30～70%.
Further, the modulus of meta-aramid chopped strand A is 60～80CN/dtex, the mould of meta-aramid chopped strand B
Amount is 30～55CN/dtex.
Further, meta-aramid fibre fibrid passes through multi-stage screening, and the dimension combination ratio of meta-aramid fibre fibrid
Example is≤30 mesh: 30～50 mesh: 50～100 mesh: 100～150 mesh=0～2:1～3:3～7:1～5.
Further, segmentation heat pressing process comprises the following steps:
(a) first paragraph: temperature 70～90 DEG C, pressure 5～10MPa, the time 10～30min；
(b) second segment: temperature 120～180 DEG C, pressure 15～25MPa, the time 0.5～1h；
(c) the 3rd section: temperature 240～300 DEG C, pressure 25～40MPa, the time 1～3h.
Further, after first paragraph hot-pressing processing, the water content of ground paper is 10～30%.
Further, after Balance Treatment, the water content of insulating laminated sheet is 2～5%.
Compared with prior art, the present invention has a following useful technique effect:
In the present invention, meta-aramid chopped strand B is the as-spun fibre processed without hot-stretch, and it is as bonding material
Material, is to realize the key factor that insulating laminated sheet mechanical strength improves.Owing to aramid fiber material body effect of heat insulation is preferable, high-temperature hot
Amount is difficult to conduct the inside to thicker insulating laminated sheet, causes interior of laminates fiber combining power more weak.The present invention is by adding
Adding meta-aramid chopped strand B, its form is comparatively fine, it is possible to be evenly distributed in the three dimensional structure of ground paper, at lower temperature
Under a certain degree of body plastic deformation can occur, thus between fiber, form good combination.Meanwhile, meta-aramid chopped
The optimum amount of fiber B is 0～20%, and its consumption increases along with the increase of insulating laminated sheet thickness.If this fiber consumption
Excessive, can seriously reduce the average length of fiber in ground paper, and then the mechanical strength of infringement insulating laminated sheet.
In the present invention, it is to determine insulating laminated sheet dimensional accuracy that the multi-stage screening restructuring of meta-aramid fibre fibrid processes
Key factor.Due to insulating laminated sheet be by the most quantitative ground paper under the pressure and temperature effect set hot pressing to certain thick
Degree forms, i.e. the thickness and precision of insulating laminated sheet depend on ground paper quantitative stability, and affect the most stable main of ground paper
Factor is the size fluctuation of meta-aramid fibre fibrid during wet method is manufactured paper with pulp.The present invention is by by meta-aramid fibre fibrid
Carrying out multi-stage screening, the fiber choosing different meshes reconfigures, and can control meta-aramid precipitating during wet method is manufactured paper with pulp fine
The size of dimension keeps continual and steady, prepares the most stable l Water Paper base, thus ensures the dimensional accuracy of insulating laminated sheet.
In the present invention, segmentation heat pressing process is used to prepare aramid fiber insulation laminate, wherein, first paragraph temperature and pressure of hot pressing
Relatively low, its effect is to get rid of the Free water in ground paper, makes l Water Paper base interlayer produce mechanical bond；Second segment hot pressing improves temperature
And pressure, its effect is the moisture in the synergy evaporation ground paper utilizing temperature and pressure so that even heat is passed by moisture
It is handed to the inside of ground paper base, promotes interfibrous combination；3rd section of hot pressing uses high temperature high pressure process, makes meta-aramid precipitating fine
Dimension produces melted, bonds and wraps up meta aramid short fiber, promotes the overall performance of aramid fiber insulation laminate further.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Below embodiments of the present invention are described in further detail:
A kind of preparation method of high intensity aramid fiber insulation laminate, described aramid fiber insulation laminate thickness 0.8～10mm, close
Degree 0.7～1.0g/cc, comprises the following steps:
(1) in terms of mass fraction, by 30～70% meta-aramid chopped strand A, 0～20% meta-aramid chopped strand B
With 30～70% meta-aramid fibre fibrid discongest in water after mix, described meta-aramid chopped strand A is high-strength and high-modulus
Fiber, length 4～10mm, fiber number 1.5～2.5D, modulus is 60～80CN/dtex；Meta-aramid chopped strand B is nascent fibre
Dimension, length 1～3mm, fiber number 0.5～1.0D, modulus is 30～55CN/dtex；Described meta-aramid fibre fibrid is by multistage
Sieve, and the dimension combination ratio of meta-aramid fibre fibrid is≤30 mesh: 30～50 mesh: 50～100 mesh: 100～150 mesh=
0～2:1～3:3～7:1～5；
(2) utilize slope screen former to carry out wet method to manufacture paper with pulp shaping, concentration 0.005～0.02% of surfing the Net, use in molding device
Ultrasonic Treatment, frequency is 50～100kHz；
(3) wet web is squeezed to moisture content 70～90%, batch the most quantitative wet web by lamination roller, after cut-out
Launch on a conveyor, form l Water Paper base, and send into plate-type hot-pressing machine and carry out segmentation hot pressing, described segmentation heat pressing process include with
Lower step:
(a) first paragraph: temperature 70～90 DEG C, pressure 5～10MPa, the time 10～30min；
(b) second segment: temperature 120～180 DEG C, pressure 15～25MPa, the time 0.5～1h；
(c) the 3rd section: temperature 240～300 DEG C, pressure 25～40MPa, the time 1～3h；
After first paragraph hot-pressing processing, the water content of ground paper is 10～30%；
(4) unloading plate after cooling and enter semi-finished product room Balance Treatment, making laminate water content is 2～5%, and then trimming is whole
Decorations, finally give aramid fiber insulation laminate product.
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1
Choose the meta-aramid chopped strand A of relative over dry gross mass 70% and the meta virtue of relative over dry gross mass 30%
Synthetic fibre fibrid is discongested in water, and wherein meta-aramid chopped strand A is high-strength high-modulus fibre, length 4mm, fiber number 1.5D, mould
Amount is 60CN/dtex, and meta-aramid fibre fibrid is after multi-stage screening, according to≤30 mesh: 30～50 mesh: 50～100 mesh:
The dimension combination of 100～150 mesh=0:1:7:2 forms；By three kinds of fibre stuff mix homogeneously, slope screen former is utilized to carry out wet
Method is manufactured paper with pulp shaping, concentration 0.005% of surfing the Net, and uses ultrasonic Treatment in molding device, and frequency is 100kHz；Wet web is squeezed extremely
Moisture content 90%, batches wet web by lamination roller, launches on a conveyor after cut-out, forms l Water Paper base, and little by feeding
Car is sent into plate-type hot-pressing machine and is carried out segmentation hot pressing；First paragraph hot pressing temperature 90 DEG C, pressure 10MPa, time 10min so that ground paper
Water content is 30%；Second segment hot pressing temperature 180 DEG C, pressure 25MPa, time 0.5h；3rd section of hot pressing temperature 300 DEG C, pressure
40MPa, time 1h；Unload plate after cooling and enter semi-finished product room Balance Treatment, make laminate water content reach 5%, trimming ornamenting,
Obtain thickness 0.8mm eventually, the high intensity aramid fiber insulation laminate product of density 0.70g/cc.
Embodiment 2
Choose the meta-aramid chopped strand A of relative over dry gross mass 30% and the meta virtue of relative over dry gross mass 70%
Synthetic fibre fibrid is discongested in water, and wherein meta-aramid chopped strand A is high-strength high-modulus fibre, length 10mm, fiber number 2.5D, mould
Amount is 80CN/dtex, and meta-aramid fibre fibrid is after multi-stage screening, according to≤30 mesh: 30～50 mesh: 50～100 mesh:
The dimension combination of 100～150 mesh=1:1:3:5 forms；By three kinds of fibre stuff mix homogeneously, slope screen former is utilized to carry out wet
Method is manufactured paper with pulp shaping, concentration 0.02% of surfing the Net, and uses ultrasonic Treatment in molding device, and frequency is 50kHz；Wet web is squeezed to containing
Water rate 70%, batches wet web by lamination roller, launches on a conveyor after cut-out, forms l Water Paper base, and passes through feeding trolley
Send into plate-type hot-pressing machine and carry out segmentation hot pressing；First paragraph hot pressing temperature 70 DEG C, pressure 5MPa, time 30min so that ground paper is aqueous
Amount is 10%；Second segment hot pressing temperature 120 DEG C, pressure 15MPa, time 1h；3rd section of hot pressing temperature 240 DEG C, pressure 25MPa,
Time 3h；Unload plate after cooling and enter semi-finished product room Balance Treatment, make laminate water content reach 2%, trimming ornamenting, finally give
Thickness 10mm, the high intensity aramid fiber insulation laminate product of density 1.0g/cc.
Embodiment 3
Choose the meta virtue of the meta-aramid chopped strand A of relative over dry gross mass 50%, relative over dry gross mass 10%
Synthetic fibre chopped strand B discongests in water with the meta-aramid fibre fibrid of relative over dry gross mass 40%, wherein meta-aramid chopped
Fiber A is high-strength high-modulus fibre, length 6mm, fiber number 2D, and modulus is 70CN/dtex, and meta-aramid chopped strand B is nascent fibre
Dimension, length 3mm, fiber number 1.0D, modulus is 55CN/dtex, and meta-aramid fibre fibrid is after multi-stage screening, according to≤30
Mesh: 30～50 mesh: 50～100 mesh: the dimension combination of 100～150 mesh=1:3:4:2 forms；By three kinds of fibre stuff mixing all
Even, utilize slope screen former to carry out wet method and manufacture paper with pulp shaping, concentration 0.01% of surfing the Net, use ultrasonic Treatment, frequency in molding device
For 75kHz；Wet web is squeezed to moisture content 80%, batches wet web by lamination roller, launch on a conveyor after cut-out, shape
Become l Water Paper base, and carry out segmentation hot pressing by feeding trolley feeding plate-type hot-pressing machine；First paragraph hot pressing temperature 80 DEG C, pressure
8MPa, time 20min so that ground paper water content is 20%；Second segment hot pressing temperature 150 DEG C, pressure 20MPa, time 0.5h；The
Three sections of hot pressing temperatures 270 DEG C, pressure 30MPa, time 2h；Unload plate after cooling and enter semi-finished product room Balance Treatment, make laminate contain
The water yield reaches 3%, and trimming ornamenting finally gives thickness 3.0mm, and the high intensity aramid fiber insulation laminate of density 0.83g/cc produces
Product.
Embodiment 4
Choose the meta virtue of the meta-aramid chopped strand A of relative over dry gross mass 50%, relative over dry gross mass 20%
Synthetic fibre chopped strand B discongests in water with the meta-aramid fibre fibrid of relative over dry gross mass 30%, wherein meta-aramid chopped
Fiber A is high-strength high-modulus fibre, length 7mm, fiber number 2D, and modulus is 60CN/dtex, and meta-aramid chopped strand B is nascent fibre
Dimension, length 1mm, fiber number 0.5D, modulus is 30CN/dtex, and meta-aramid fibre fibrid is after multi-stage screening, according to≤30
Mesh: 30～50 mesh: 50～100 mesh: the dimension combination of 100～150 mesh=2:3:4:1 forms；By three kinds of fibre stuff mixing all
Even, utilize slope screen former to carry out wet method and manufacture paper with pulp shaping, concentration 0.01% of surfing the Net, use ultrasonic Treatment, frequency in molding device
For 75kHz；Wet web is squeezed to moisture content 80%, batches wet web by lamination roller, launch on a conveyor after cut-out, shape
Become l Water Paper base, and carry out segmentation hot pressing by feeding trolley feeding plate-type hot-pressing machine；First paragraph hot pressing temperature 90 DEG C, pressure
10MPa, time 20min so that ground paper water content is 15%；Second segment hot pressing temperature 150 DEG C, pressure 20MPa, time 1.0h；
3rd section of hot pressing temperature 280 DEG C, pressure 30MPa, time 2h；Unload plate after cooling and enter semi-finished product room Balance Treatment, make laminate
Water content reaches 3%, and trimming ornamenting finally gives thickness 5.0mm, and the high intensity aramid fiber insulation laminate of density 0.90g/cc produces
Product.
The high intensity aramid fiber insulation laminate main performance index that the embodiment of the present invention 3 is made the most relatively,
As shown in table 1.
Table 1 embodiment 3 contrasts with like product performance indications
Data from table 1 are it can be seen that according to the preparation method of the present invention a kind of high intensity aramid fiber insulation laminate, made
Standby aramid fiber insulation laminate is with the obvious advantage in terms of mechanical strength and insulating properties, and maintains the life-time service temperature of 220 DEG C
Degree, is conducive to providing high-quality new material for electric insulation and electron and electrician field.
Claims (7)
1. the preparation method of a high intensity aramid fiber insulation laminate, it is characterised in that described aramid fiber insulation laminate thickness 0.8
～10mm, density 0.7～1.0g/cc, comprise the following steps:
(1) mix after meta-aramid chopped strand A, meta-aramid chopped strand B and meta-aramid fibre fibrid being discongested in water
Closing, described meta-aramid chopped strand A is high-strength high-modulus fibre, length 4～10mm, fiber number 1.5～2.5D；Meta-aramid is short
Cutting fiber B is as-spun fibre, length 1～3mm, fiber number 0.5～1.0D；
(2) utilize slope screen former to carry out wet method to manufacture paper with pulp shaping, concentration 0.005～0.02% of surfing the Net, use ultrasonic in molding device
Ripple processes, and frequency is 50～100kHz；
(3) wet web is squeezed to moisture content 70～90%, batch wet web by lamination roller, open up on a conveyor after cut-out
Open, form l Water Paper base, and send into plate-type hot-pressing machine and carry out segmentation hot pressing；
(4) unload plate after cooling and enter semi-finished product room Balance Treatment, then trimming ornamenting, finally give aramid fiber insulation laminate and produce
Product.
The preparation method of a kind of high intensity aramid fiber insulation laminate the most according to claim 1, it is characterised in that meta virtue
The consumption of synthetic fibre chopped strand A, meta-aramid chopped strand B and meta-aramid fibre fibrid is respectively as follows:
A () meta-aramid chopped strand A, relative to over dry gross mass 30～70%；
B () meta-aramid chopped strand B, relative to over dry gross mass 0～20%；
C () meta-aramid fibre fibrid, relative to over dry gross mass 30～70%.
The preparation method of a kind of high intensity aramid fiber insulation laminate the most according to claim 1, it is characterised in that meta virtue
The modulus of synthetic fibre chopped strand A is 60～80CN/dtex, and the modulus of meta-aramid chopped strand B is 30～55CN/dtex.
The preparation method of a kind of high intensity aramid fiber insulation laminate the most according to claim 1, it is characterised in that meta virtue
Synthetic fibre fibrid passes through multi-stage screening, and the dimension combination ratio of meta-aramid fibre fibrid is≤30 mesh: 30～50 mesh: 50～
100 mesh: 100～150 mesh=0～2:1～3:3～7:1～5.
The preparation method of a kind of high intensity aramid fiber insulation laminate the most according to claim 1, it is characterised in that segmentation heat
Pressure technique comprises the following steps:
(a) first paragraph: temperature 70～90 DEG C, pressure 5～10MPa, the time 10～30min；
(b) second segment: temperature 120～180 DEG C, pressure 15～25MPa, the time 0.5～1h；
(c) the 3rd section: temperature 240～300 DEG C, pressure 25～40MPa, the time 1～3h.
The preparation method of a kind of high intensity aramid fiber insulation laminate the most according to claim 5, it is characterised in that first paragraph
After hot-pressing processing, the water content of ground paper is 10～30%.
The preparation method of a kind of high intensity aramid fiber insulation laminate the most according to claim 1, it is characterised in that at balance
After reason, the water content of insulating laminated sheet is 2～5%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111472191A (en) * | 2020-04-14 | 2020-07-31 | 山东聚芳新材料股份有限公司 | Para-aramid fiber plate and preparation method thereof |
| CN111501417A (en) * | 2020-05-06 | 2020-08-07 | 平江县盛盈云母工业有限公司 | Preparation method of mica paperboard |
| CN115198567A (en) * | 2022-06-28 | 2022-10-18 | 陈克复 | High-performance aramid laminated board and preparation method and application thereof |
| CN115538215A (en) * | 2022-10-20 | 2022-12-30 | 天蔚蓝电驱动科技(江苏)有限公司 | Corona-resistant mica/aramid fiber composite material for new energy automobile and preparation method thereof |
| CN115897292A (en) * | 2022-10-28 | 2023-04-04 | 株洲时代华先材料科技有限公司 | Aramid crepe paper and preparation method thereof |
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