CN106223103B - A kind of preparation method of polyester meta-aramid extrusion coating paper - Google Patents
A kind of preparation method of polyester meta-aramid extrusion coating paper Download PDFInfo
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- CN106223103B CN106223103B CN201610601710.9A CN201610601710A CN106223103B CN 106223103 B CN106223103 B CN 106223103B CN 201610601710 A CN201610601710 A CN 201610601710A CN 106223103 B CN106223103 B CN 106223103B
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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
- D21H13/24—Polyesters
-
- 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
- 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
-
- 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
-
- 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
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
Abstract
The invention discloses a kind of preparation methods of polyester meta-aramid extrusion coating paper, specifically includes the following steps: pre-processing to PET chopped strand；PET chopped strand after pretreatment discongest for the first time with fluffer；Then meta-aramid pulp fibers are added, secondary discongest is carried out；Dispersing agent is finally added, third time is carried out and discongests, obtain suspension；Obtained suspension is injected in sheet forming apparatus and carries out dehydration forming, polyester meta-aramid extrusion coating paper body paper is obtained after being squeezed, being dried；Obtained suspension is injected in sheet forming apparatus and carries out dehydration forming, aramid fiber electric insulation paper body paper is obtained after being squeezed, being dried；By resulting polyester meta-aramid extrusion coating paper body paper carry out it is hot-forming to get.The preparation method of aramid fiber extrusion coating paper provided by the invention, can maximally utilise chopped strand high strength characteristics and the lower softening temperature of polyester fiber and as fiber is cohered, improve the strength character and insulation performance of meta-position aramid fiber paper.
Description
Technical field
The invention belongs to paper industry and material industry interleaving techniques field, it is related to a kind of polyester meta-aramid extrusion coating paper
Preparation method.
Background technique
Using meta-aramid (poly) pulp fibers and meta-aramid chopped strand as raw material, utilize
Modern paper wet papermaking technology is manufactured paper with pulp and hot-forming flaky composite material obtained, is a kind of high-performance synthetic fibers paper base
Material.Because it with tough mechanical performance, good dielectric properties, ideal high temperature resistance and can flexibly be designed
Property, it is extensive in special dimensions such as aerospace, traffic power, defense military to can be used as insulating materials, electronic material, structural material
Using.
Currently, the production domesticization of meta-aramid paper base material is also faced with heavy problem, there are the problem of material quality, fiber dispersion
The problem of with wet laying process and equipment, especially hot press forming technology problem.The meta-position aramid fiber paper mechanical strength of formation
Can be poor, and parchmentizing phenomenon is serious, paper insulation performance is poor.As restrict aramid paper further apply structural material and
The bottleneck in insulating materials field.
Terylene (polyethylene terephthalate), English abbreviation PET, PET fiber are a kind of thermoplastic fibre, heat resistance phase
To preferable, start to generate that cohere softening point temperature be 238~240 DEG C at 205 DEG C, fusing point is 255~260 DEG C, initial decomposition
350 DEG C of temperature or more.PET fiber also has excellent dielectric properties, elasticity, a dimensional stability, rub resistance, and resistance to daylight is not mould
It does not eat into.PET fiber mixes high performance insulating paper of manufacturing paper with pulp with the synthetic fibers of electrical insulation capability and high temperature resistance.Utilize PET
Fiber is that raw material prepares high temperature insulation paper, can not only improve the service performance of synthetic fibre paper, can also reduce meta-aramid
The usage amount of fiber reduces cost, obtains the relatively high synthetic fibre paper of sexual valence.And in preparation high-performance synthetic fibre paper
In research process, holds suitable heat pressing process and paper strength performance is had decisive impact.Therefore how paper is improved
Evenness and intensity are the emphasis of current field of papermaking research.
Summary of the invention
The object of the present invention is to provide a kind of preparation methods of polyester meta-aramid extrusion coating paper, can maximally utilise
The lower softening temperature of high strength characteristics and polyester fiber of chopped strand and as fiber is cohered, improve the strong of meta-position aramid fiber paper
Spend performance and insulation performance.
The technical scheme adopted by the invention is that a kind of preparation method of polyester meta-aramid extrusion coating paper, specifically include with
Lower step:
Step 1, PET chopped strand is pre-processed；
Step 2, with fluffer will discongest for the first time through the pretreated PET chopped strand of step 1；Then it adds
Meta-aramid pulp fibers carry out secondary discongest；Dispersing agent is finally added, third time is carried out and discongests, obtain suspension；
Step 3, the suspension that step 2 obtains is injected in sheet forming apparatus and carries out dehydration forming, squeezed, be dried
Polyester meta-aramid extrusion coating paper body paper is obtained afterwards；
Step 4, by the resulting polyester meta-aramid extrusion coating paper body paper of step 3 carry out it is hot-forming to get.
The features of the present invention also characterized in that
The wherein preprocessing process of step 1 are as follows:
By PET chopped strand molar concentration be 1.0 × 10-3Mol/L~3 × 10-3Mol/L, temperature are 40 DEG C~60 DEG C
Neopelex solution in impregnate 0.5h~1h, then wash 3~5 times, it is finally dry in 100 DEG C~105 DEG C vacuum
Over dry is dried in dry case.
Wherein the mass ratio of PET chopped strand and meta-aramid pulp fibers is 4:6 in step 2.
Wherein the dispersing agent in step 2 is polyethylene glycol oxide, and additive amount is to starch relative to PET chopped strand and meta-aramid
The 0.05%~0.07% of dregs of rice fiber absolute dry mass, that discongests for the first time discongests parameter are as follows: fluffer discongest 15000r~
25000r；That discongests for the second time discongests parameter are as follows: fluffer discongests 15000r~25000r；What third time was discongested discongests parameter
Are as follows: fluffer discongests 15000r~25000r.
The wherein detailed process of step 3 are as follows: by the resulting suspension injection sheet forming apparatus of step 2, prepare quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 1min~3min through hydraulic press, removes moisture extra in wet sheet, most
Afterwards will squeezing treated that wet sheet is dried in paper baker.
Wherein the pressure of hydraulic press is 0.4MPa~0.6MPa in step 3.
Wherein the drying temperature in step 3 in paper baker be 95 DEG C~105 DEG C, drying time be 5min~
8min。
The wherein detailed process of step 4 are as follows:
The aramid fiber body paper that step 3 is prepared first preheats 30s~50s on vulcanizing press, then in compression molding
Hot pressing 2~4 times on machine are finally placed on three roller hot presses hot pressing 1~3 time.
The wherein hot compression parameters in step 4 on vulcanizing press are as follows: hot pressing temperature is 210 DEG C~260 DEG C, hot pressing time
For 2min~10min, hot pressing pressure is 9MPa~21MPa.
The wherein hot compression parameters in step 4 on three roller hot presses are as follows: hot pressing temperature is 170~190 DEG C, hot pressing pressure
100bar~140bar, 0.5~1.5m/min of roller speed.
The invention has the advantages that preparation method provided by the invention is using PET fiber and meta-aramid pulp fibers
As raw material, hot pressing temperature is controlled, temperature is made to be higher than the fusing point of PET fiber and is lower than the vitrifying of meta-aramid pulp fibers
Transition temperature, so that PET fiber surface portion melts, meta-aramid pulp fibers are melted, and certain pressure condition
So that paper crystallinity improves, strand arrangement is more regular orderly, and pulp fibers deformation and migration are the result is that make fiber
Between gap become smaller and tail off, bonded area is bigger between fiber, fiber combine it is closer, make into paper tensile index and increase substantially,
The advantages of PET fiber enhancing meta-position aramid fiber paper, is that the high strength characteristics and PET fiber of chopped strand can be maximally utilised
Characteristic is cohered, and effectively disperses heat flow density in hot pressing, so as to improve the strength character of meta-position aramid fiber paper.
Detailed description of the invention
Fig. 1 is vulcanizing press hot pressing in a kind of hot pressing of the preparation method of polyester meta-aramid extrusion coating paper of the present invention
Temperature is to the influence of aramid paper intensity/insulation performance；
Fig. 2 is vulcanizing press hot pressing in a kind of hot pressing of the preparation method of polyester meta-aramid extrusion coating paper of the present invention
Pressure is to the influence of aramid paper intensity/insulation performance；
Fig. 3 is vulcanizing press hot pressing in a kind of hot pressing of the preparation method of polyester meta-aramid extrusion coating paper of the present invention
Time is to the influence of aramid paper intensity/insulation performance.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of preparation method of polyester meta-aramid extrusion coating paper of the present invention, specifically includes the following steps:
Step 1, PET chopped strand is pre-processed；
The preprocessing process of PET chopped strand are as follows: by PET chopped strand molar concentration be 1.0 × 10-3Mol/L~3 ×
10-30.5h~1h is impregnated in mol/L, the neopelex solution that temperature is 40 DEG C~60 DEG C, is then washed 3~5 times,
Finally over dry is dried in 100 DEG C~105 DEG C vacuum ovens.
Step 2, with fluffer will discongest for the first time through the pretreated PET chopped strand of step 1；Then it adds
Meta-aramid pulp fibers carry out secondary discongest；Dispersing agent is finally added, third time is carried out and discongests, obtain suspension；
The mass ratio of PET chopped strand and meta-aramid pulp fibers is 4:6, and dispersing agent is polyethylene glycol oxide, additive amount
For 0.05%~0.07% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass, that discongests for the first time is dredged
Solve parameter are as follows: fluffer discongests 15000r~25000r, discongests concentration control in mass percent 0.3%；It discongests for the second time
Discongest parameter are as follows: fluffer discongests 15000r~25000r, discongests concentration control in mass percent 0.3%；Third time is discongested
Discongest parameter are as follows: fluffer discongests 15000r~25000r, discongest concentration control in mass percent 0.3%.
Step 3, the suspension that step 2 obtains is injected in sheet forming apparatus and carries out dehydration forming, squeezed, be dried
Polyester meta-aramid extrusion coating paper body paper is obtained afterwards；
The detailed process of step 3 are as follows: by the resulting suspension injection sheet forming apparatus of step 2, prepare quantification of
100g/m2Then aramid paper humidity strip squeezes processing 1min~3min through hydraulic press, removes moisture extra in wet sheet, finally
Will squeezing treated that wet sheet is dried in paper baker.
Wherein the pressure of hydraulic press is 0.4MPa~0.6MPa, and the drying temperature in paper baker is 95 DEG C~105 DEG C,
Drying time is 5min~8min；
Step 4, the resulting polyester meta-aramid extrusion coating paper body paper progress of step 3 is hot-forming, obtain high performance polyester
Meta-aramid extrusion coating paper；The detailed process of step 4 are as follows:
The aramid fiber body paper that step 3 is prepared first preheats 30s~50s on vulcanizing press, then in compression molding
Hot pressing 2~4 times on machine are finally placed on three roller hot presses hot pressing 1~3 time.
Hot compression parameters on vulcanizing press are as follows: hot pressing temperature be 210 DEG C~260 DEG C, hot pressing time be 2min~
10min, hot pressing pressure are 9MPa~21MPa；
Hot compression parameters on three roller hot presses are as follows: hot pressing temperature is 170 DEG C~190 DEG C, hot pressing pressure 100bar~
140bar, 0.5~1.5m/min of roller speed.
Embodiment 1
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 1.0 × 10-3Mol/L, temperature are
0.5h is impregnated in 40 DEG C of neopelex solution, then washes 3 times, is finally dried in 100 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 15000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 15000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.05% polyethylene oxide solutions are discongested, and 15000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 1min under the pressure of 0.4MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 95 DEG C, drying time 5min, obtains aramid fiber extrusion coating paper body paper；Will
To aramid fiber extrusion coating paper body paper 30s is preheated on vulcanizing press, then hot pressing 2 times, hot pressing temperature are on vulcanizing press
It 210 °, hot pressing time 2min, hot pressing pressure 9MPa, is finally placed on three roller hot presses hot pressing 1 time, hot pressing temperature 170
DEG C, hot pressing pressure 100bar, roller speed is 0.5m/min to get aramid fiber extrusion coating paper.
Embodiment 2
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 3.0 × 10-3Mol/L, temperature are
1.5h is impregnated in 60 DEG C of neopelex solution, then washes 5 times, is finally dried in 100 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 25000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 25000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.07% polyethylene oxide solutions are discongested, and 25000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 3min under the pressure of 0.6MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 105 DEG C, drying time 8min, obtains aramid fiber extrusion coating paper body paper；Will
To aramid fiber extrusion coating paper body paper 50s is preheated on vulcanizing press, then hot pressing 4 times, hot pressing temperature are on vulcanizing press
It 260 °, hot pressing time 10min, hot pressing pressure 21MPa, is finally placed on three roller hot presses hot pressing 3 times, hot pressing temperature is
190 DEG C, hot pressing pressure 140bar, roller speed is 1.5m/min to get aramid fiber extrusion coating paper.
Embodiment 3
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 210 °, hot pressing time 8min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 43.9Nmg that roller speed, which is 1m/min,-1, compressive resistance be
21.6kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 4
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 220 °, hot pressing time 8min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 64.3Nmg that roller speed, which is 1m/min,-1, compressive resistance be
23.9kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 5
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 8min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 74.6Nmg that roller speed, which is 1m/min,-1, compressive resistance be
28.6kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 6
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 240 °, hot pressing time 8min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 63.8Nmg that roller speed, which is 1m/min,-1, compressive resistance be
31.5kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 7
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 250 °, hot pressing time 8min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 56.8Nmg that roller speed, which is 1m/min,-1, compressive resistance be
32.6kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 8
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 260 °, hot pressing time 8min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 48.2Nmg that roller speed, which is 1m/min,-1, compressive resistance be
30.9kV·mm-1Aramid fiber extrusion coating paper.
In the aramid fiber extrusion coating paper preparation process of above embodiments 3~8, remaining technological parameter is constant, to vulcanizing press
Hot pressing temperature be optimized, the Testing index of optimization is the measurement of tensile index and compressive resistance, if the following table 1 is that optimization is real
Test influence of the vulcanizing press under different hot pressing temperatures to aramid fiber extrusion coating paper strength character:
Table 1
Optimum results are as shown in Figure 1, as shown in Figure 1, when carrying out hot pressing using vulcanizing press, in certain silicon carbide
Under, as the temperature rises, the tensile index of aramid fiber extrusion coating paper, compressive resistance gradually increase, and aramid fiber extrusion coating paper at 230 DEG C
Tensile index, the comprehensive performance of compressive resistance are best, and since fiber is similar with the chemical structure of matrix, fusing point between the two is poor
It is different smaller, cause processing temperature section relatively narrow, inappropriate processing temperature can make the melting of fiber orientation structure and cause fiber
Proportion is smaller in entire material, causes large effect to the performance of material, therefore the selection of hot pressing temperature is aramid fiber
Key factor in extrusion coating paper preparation process.
Embodiment 9
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 8min, hot pressing pressure 9MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 53.8Nmg that roller speed, which is 1m/min,-1, compressive resistance be
21.6kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 10
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 8min, hot pressing pressure 12MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 61.9Nmg that roller speed, which is 1m/min,-1, compressive resistance be
24.7kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 11
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 8min, hot pressing pressure 15MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 66.9Nmg that roller speed, which is 1m/min,-1, compressive resistance be
27.8kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 12
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 8min, hot pressing pressure 21MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 68.7Nmg that roller speed, which is 1m/min,-1, compressive resistance be
29.9kV·mm-1Aramid fiber extrusion coating paper.
In the aramid fiber extrusion coating paper preparation process of above embodiments 5,9,10,11,12, remaining technological parameter is constant, to flat
The hot pressing pressure of plate vulcanizer is optimized, and the Testing index of optimization is the measurement of tensile index, compressive resistance, such as the following table 2
It is influence of the vulcanizing press under different hot pressing pressures to aramid paper strength character in optimization experiment:
Table 2
The result of optimization is as shown in Fig. 2, as shown in Figure 2, when carrying out hot pressing using vulcanizing press, in certain pressure section
Under, with the raising of pressure, the tensile index of aramid fiber extrusion coating paper, compressive resistance are gradually increased, and under the pressure of 18Mpa, virtue
The tensile index of synthetic fibre extrusion coating paper, the comprehensive performance of compressive resistance are best.
Embodiment 13
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 2min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 56.8Nmg that roller speed, which is 1m/min,-1, compressive resistance be
23.5kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 14
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 4min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 62.7Nmg that roller speed, which is 1m/min,-1, compressive resistance be
25.8kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 15
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 6min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 68.9Nmg that roller speed, which is 1m/min,-1, compressive resistance be
26.7kV·mm-1Aramid fiber extrusion coating paper.
Embodiment 16
PET chopped strand is pre-processed, preprocessing process are as follows: molar concentration be 2.0 × 10-3Mol/L, temperature are
0.75h is impregnated in 50 DEG C of neopelex solution, then washes 4 times, is finally dried in 102 DEG C of vacuum ovens
Over dry；The pretreated over dry PET chopped strand of 1.27g is weighed, 20000r is discongested in fluffer, discongests concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulp fibers are then added and are discongested, discongests 20000r, discongests concentration control
System is eventually adding in mass percent 0.3% relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.06% polyethylene oxide solutions are discongested, and 20000r is discongested, and are discongested concentration control in mass percent 0.3%, are obtained outstanding
Obtained suspension is injected in sheet forming apparatus, prepares quantification of 100g/m by supernatant liquid2Aramid paper humidity strip, then through oil pressure
Machine squeezes processing 2min under the pressure of 0.5MPa, removes extra moisture in wet sheet, finally will squeezing treated l Water Paper
Piece is dried in paper baker, and drying temperature is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；It will
Obtained aramid fiber extrusion coating paper body paper preheats 40s on vulcanizing press, then hot pressing 3 times, hot pressing temperature on vulcanizing press
It is 230 °, hot pressing time 10min, hot pressing pressure 18MPa, is finally placed on three roller hot presses hot pressing 2 times, hot pressing temperature is
190 DEG C, hot pressing pressure 120bar, it to get tensile index is 71.2Nmg that roller speed, which is 1m/min,-1, compressive resistance be
30.5kV·mm-1Aramid fiber extrusion coating paper.
In the aramid fiber extrusion coating paper preparation process of above embodiments 5,13,14,15,16, remaining technological parameter is constant, to flat
The hot pressing time of plate vulcanizer is optimized, and the Testing index of optimization is the measurement of tensile index, compressive resistance, such as the following table 3
It is influence of the vulcanizing press under different hot pressing times to aramid paper strength character in optimization experiment:
Table 3
The result of optimization is as shown in figure 3, from the figure 3, it may be seen that when carrying out hot pressing using vulcanizing press, in certain time section
Under, as time increases, the tensile index of aramid fiber extrusion coating paper, compressive resistance gradually increase, and in hot pressing 8min, aramid fiber is multiple
The paper performance of combined paper is best.
By above embodiments 3~16 can with obtain, using vulcanizing press carry out hot pressing, 230 DEG C of hot pressing temperature, hot pressing
Pressure 18MPa, hot pressing time 8min, in conjunction with hot pressing 2 times on three roller hot presses, hot pressing temperature is 180 DEG C, and hot pressing pressure is
120bar, roller speed are 1m/min, and polyester meta-aramid extrusion coating paper tensile strength reaches maximum, i.e. 74.6Nmg-1.Using flat
Plate vulcanizer hot press period, at temperature and pressure dual effect, hot pressing actual temperature is higher than real polyester meta-aramid extrusion coating paper
Temperature is arranged in border, and the mutual induction effect of heat, polyester fiber partial melting, meta position pulp occur between pulp fibers and polyester fiber
Fiber largely melts.Meta position pulp fibers are tightly wrapped on chopped strand surface, and chopped strand and pulp are intermolecular mutually
Infiltration fusion, the phase interface adhesive property formed between chopped strand reinforced phase and pulp matrix phase are significantly promoted, PET melting
The increase of degree further reduces paper porosity.Using three roller hot press hot press periods, polyester meta-aramid extrusion coating paper warp
Hot pressing light action, surface strength of paper are further promoted, and paper surface is more smooth, and evenness is promoted, and tightness rises, and are further mentioned
Paper strength performance is risen.The hot pressing mode combined using vulcanizing press hot-pressing processing with three roller hot press hot-pressing processings,
Paper after three roller hot presses and vulcanizing press hot pressing is relatively used alone in the polyester meta-aramid extrusion coating paper strength character prepared
Its tensile index and compressive resistance are promoted.Polyester meta-aramid extrusion coating paper strength character is relatively used alone meta-aramid and is chopped
Fiber and meta-aramid pulp fibers prepare aramid paper tensile index and improve 31%, and compressive resistance improves 83%.
A kind of preparation method of polyester meta-aramid extrusion coating paper of the present invention, in hot pressing, preheating link is aramid paper
A more important link, aramid paper body paper are chopped strand and meta position pulp fibers random alignment and the interpenetrating networks constituted
There are a large amount of small holes in paper in structure, aramid paper body paper is during storage, since capillarity and aramid fiber are fine
Dimension has certain hydrophily, therefore there are certain moisture in paper, paper is not preheated directly carry out it is hot-forming, due to water
Divide evaporation and can not effectively distribute, paper surface generates more bubble, to seriously affect the apparent state of paper and intensive properties
Can, carry out again hot-forming after paper is preheated, water effective distributes in paper, and paper keeps dry before hot-forming
It is dry, influence of the moisture to paper strength performance in paper is eliminated, to obtain ideal paper status.
Claims (7)
1. a kind of preparation method of polyester meta-aramid extrusion coating paper, it is characterised in that: specifically includes the following steps:
Step 1, PET chopped strand is pre-processed；
Step 2, with fluffer will discongest for the first time through the pretreated PET chopped strand of step 1；Then meta position is added
Ppta-pulp fibre carries out secondary discongest；Dispersing agent is finally added, third time is carried out and discongests, obtain suspension；
Step 3, the suspension that step 2 obtains is injected in sheet forming apparatus and carries out dehydration forming, after being squeezed, being dried
Polyester meta-aramid extrusion coating paper body paper；
Step 4, by the resulting polyester meta-aramid extrusion coating paper body paper of step 3 carry out it is hot-forming to get；
The detailed process of the step 4 are as follows:
The polyester meta-aramid extrusion coating paper body paper that step 3 is prepared is preheated into 30s~50s on vulcanizing press first, then
Hot pressing 2~4 times on vulcanizing press are finally placed on three roller hot presses hot pressing 1~3 time；
Hot compression parameters in the step 4 on vulcanizing press are as follows: hot pressing temperature is 210 DEG C~260 DEG C, and hot pressing time is
2min~10min, hot pressing pressure are 9MPa~21MPa；
Hot compression parameters in the step 4 on three roller hot presses are as follows: hot pressing temperature is 170~190 DEG C, hot pressing pressure 100bar
~140bar, 0.5~1.5m/min of roller speed.
2. a kind of preparation method of polyester meta-aramid extrusion coating paper according to claim 1, it is characterised in that: the step
1 preprocessing process are as follows:
By PET chopped strand molar concentration be 1.0 × 10-3Mol/L~3 × 10-3Mol/L, ten that temperature is 40 DEG C~60 DEG C
0.5h~1h is impregnated in dialkyl benzene sulfonic acids sodium solution, is then washed 3~5 times, finally in 100 DEG C~105 DEG C vacuum ovens
In be dried to over dry.
3. a kind of preparation method of polyester meta-aramid extrusion coating paper according to claim 1, it is characterised in that: the step
The mass ratio of PET chopped strand and meta-aramid pulp fibers is 4:6 in 2.
4. a kind of preparation method of polyester meta-aramid extrusion coating paper according to claim 1, it is characterised in that: the step
Dispersing agent in 2 is polyethylene glycol oxide, and additive amount is relative to PET chopped strand and meta-aramid pulp fibers absolute dry mass
0.05%~0.07%, that discongests for the first time discongests parameter are as follows: fluffer discongests 15000r~25000r；That discongests for the second time dredges
Solve parameter are as follows: fluffer discongests 15000r~25000r；Third time discongest discongest parameter are as follows: fluffer discongest 15000r~
25000r。
5. a kind of preparation method of polyester meta-aramid extrusion coating paper according to claim 1, it is characterised in that: the step
3 detailed process are as follows: by the resulting suspension injection sheet forming apparatus of step 2, prepare quantification of 100g/m2Aramid paper is wet
Then piece squeezes processing 1min~3min through hydraulic press, removes extra moisture in wet sheet, finally will squeezing that treated is wet
The scraps of paper are dried in paper baker.
6. a kind of preparation method of polyester meta-aramid extrusion coating paper according to claim 5, it is characterised in that: the step
The pressure of hydraulic press is 0.4MPa~0.6MPa in 3.
7. a kind of preparation method of polyester meta-aramid extrusion coating paper according to claim 5, it is characterised in that: the step
Drying temperature in 3 in paper baker is 95 DEG C~105 DEG C, and drying time is 5min~8min.
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