CN106245421B - A kind of preparation method of contraposition/meta-aramid extrusion coating paper - Google Patents
A kind of preparation method of contraposition/meta-aramid extrusion coating paper Download PDFInfo
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- CN106245421B CN106245421B CN201610600988.4A CN201610600988A CN106245421B CN 106245421 B CN106245421 B CN 106245421B CN 201610600988 A CN201610600988 A CN 201610600988A CN 106245421 B CN106245421 B CN 106245421B
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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
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- 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
- 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
- D21H17/53—Polyethers; Polyesters
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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
- 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
- D21H21/10—Retention agents or drainage improvers
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of contraposition/meta-aramid extrusion coating paper preparation methods, specifically includes the following steps: pre-processing to p-aramid fiber chopped strand；P-aramid fiber 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, aramid fiber extrusion coating paper body paper is obtained after being squeezed, being dried；By resulting aramid fiber 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 the high strength characteristics of chopped strand, improve the strength character of meta-position aramid fiber paper.
Description
Technical field
The invention belongs to paper industries and material industry interleaving techniques field, are related to a kind of contraposition/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, resistance to ag(e)ing is poor.The bottleneck further applied as restriction aramid paper.
P-aramid fiber (poly(p-phenylene terephthalamide)), English abbreviation PPTA exist in para-aramid fiber main chain pair
Penylene base keeps main chain rigidly larger, and rotational energy is higher in strand, and planar rigidity extended chain conformation is presented in macromolecule.P-aramid fiber
Fiber is prepared by fiber spinning from crystalline state method, has tensile strength outstanding, stretch modulus, heat resistance, dielectric properties.With meta-aramid
Fiber is compared, and para-aramid fiber intensity is its 3~7 times, the good reputation with " synthetic steel wire ".Heat resistance is good, vitrifying
Transition temperature is 345 DEG C, and decomposition temperature is 560 DEG C.Limit oxygen index is 28~30.
Meta-aramid (poly), English abbreviation PMIA, meta-aramid pulp is by aramid fiber condensate
Solution thread is vigorously stirred by precipitating equipment high speed in precipitating agent or solidification liquid and is frozen into pulp state fine crushing, be made heavy
Fiber is analysed, pulp is also.There are hydrophilic radicals for meta-aramid pulp macromolecular chain, have good dispersibility in water, with height
Performance chopped strand, which mixes, prepares high-temperature resistance insulation paper.
Using not homologous assorted fibre at paper method, the confounding effect different from Single Fiber may be generated, to send out
Enhancing and the toughening effect for waving various fibers are expected to become the solution insufficient effective way of aramid fiber strength character.Aramid fiber is chopped fine
Though dimension is homologous structure with pulp, there are still certain interface interactions for cohesive process between the fiber of different shape.How to control
Hot pressing temperature appropriate is made, makes to reach good bonding state between fiber to be the key that obtain high-intensitive aramid paper.Using contraposition
Aramid short fiber is reinforcing material, is mixed into paper with meta-aramid pulp, by hot pressing for aramid fiber extrusion coating paper, hopes acquisition
High-performance aramid paper.
Summary of the invention
It, can land productivity to greatest extent the object of the present invention is to provide a kind of contraposition/meta-aramid extrusion coating paper preparation method
With the high strength characteristics of chopped strand, the strength character of meta-position aramid fiber paper is improved.
The technical scheme adopted by the invention is that a kind of contraposition/meta-aramid extrusion coating paper preparation method, specifically include with
Lower step:
Step 1, p-aramid fiber chopped strand is pre-processed；
Step 2, with fluffer will discongest for the first time through the pretreated p-aramid fiber chopped strand of step 1；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；
Step 3, the suspension that step 2 obtains is injected in sheet forming apparatus and carries out dehydration forming, squeezed, be dried
Aramid fiber extrusion coating paper body paper is obtained afterwards；
Step 4, by the resulting aramid fiber 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 p-aramid fiber chopped strand molar concentration be 1.0 × 10-3Mol/L~3 × 10-3Mol/L, temperature are 40 DEG C
0.5h~1h is impregnated in~60 DEG C of neopelex solution, is then washed 3~5 times, finally at 100 DEG C~105 DEG C
Over dry is dried in vacuum oven.
Wherein the mass ratio of p-aramid fiber 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 relative to p-aramid fiber chopped strand and meta position
The 0.05%~0.07% of ppta-pulp fibre absolute dry mass, that discongests for the first time discongests parameter are as follows: fluffer discongests 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:
Then the aramid fiber body paper that step 3 is prepared first hot pressing 2~4 times on vulcanizing press are placed on three rollers heat again
Hot pressing 1~3 time on press.
The wherein hot compression parameters in step 4 on vulcanizing press are as follows: hot pressing temperature is 240 DEG C~290 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 220 DEG C~240 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 para-aramid fiber and meta-aramid pulp
Fiber controls hot pressing temperature as raw material, and temperature is made to be lower than the fusing point of fiber so that para-aramid fiber table and part is molten
Melt, meta-aramid pulp fibers melt, and certain pressure condition improves paper crystallinity, and strand arranges more
Add it is regular orderly, pulp fibers deformation and migration the result is that Inter-fiber voids is made to become smaller and tail off, bonded area between fiber
More greatly, the advantages of fiber combines closer, makes into paper tensile index and increases substantially, and para-aramid fiber enhances meta-position aramid fiber paper
It is that the high strength characteristics of chopped strand can be maximally utilised, improves the strength character of meta-position aramid fiber paper.
Detailed description of the invention
Fig. 1 is vulcanizing press heat in a kind of hot pressing of the preparation method of contraposition/meta-aramid extrusion coating paper of the present invention
Press influence of the temperature to aramid paper strength character；
Fig. 2 is vulcanizing press heat in a kind of hot pressing of the preparation method of contraposition/meta-aramid extrusion coating paper of the present invention
Influence of the pressure pressure to aramid paper strength character；
Fig. 3 is vulcanizing press heat in a kind of hot pressing of the preparation method of contraposition/meta-aramid extrusion coating paper of the present invention
Press influence of the time to aramid paper strength character.
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 contraposition/meta-aramid extrusion coating paper of the present invention, specifically includes the following steps:
Step 1, p-aramid fiber chopped strand is pre-processed；
The preprocessing process of p-aramid fiber chopped strand are as follows: by p-aramid fiber 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, then
Washing 3~5 times, is finally dried to over dry in 100 DEG C~105 DEG C vacuum ovens.
Step 2, with fluffer will discongest for the first time through the pretreated p-aramid fiber chopped strand of step 1；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；
The mass ratio of p-aramid fiber chopped strand and meta-aramid pulp fibers is 4:6, and dispersing agent is polyethylene glycol oxide, is added
Dosage is 0.05%~0.07% relative to p-aramid fiber chopped strand and meta-aramid pulp fibers absolute dry mass, for the first time
That discongests discongests parameter are as follows: fluffer discongests 15000r~25000r, discongests concentration control in mass percent 0.3%；Second
It is secondary discongest discongest parameter are as follows: fluffer discongests 15000r~25000r, discongest concentration control in mass percent 0.3%；The
That discongests three times discongests parameter are as follows: fluffer discongests 15000r~25000r, discongests 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
Aramid fiber 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 aramid fiber extrusion coating paper body paper of step 3 is carried out hot-forming to get aramid fiber extrusion coating paper；Step 4
Detailed process are as follows:
Then the aramid fiber body paper that step 3 is prepared first hot pressing 2~4 times on vulcanizing press are placed on three rollers heat again
Hot pressing 1~3 time on press；
Hot compression parameters on vulcanizing press are as follows: hot pressing temperature be 240 DEG C~290 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 220 DEG C~240 DEG C, hot pressing pressure 100bar~
140bar, 0.5~1.5m/min of roller speed.
Embodiment 1
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 1.0 × 10-30.5h is impregnated in mol/L, the neopelex solution that temperature is 40 DEG C, then washing 3 times, finally
Over dry is dried in 100 DEG C of vacuum ovens；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, in fluffer
In discongest 15000r, discongest concentration control in mass percent 0.3%, 1.90g over dry meta-aramid pulp be then added and carries out
It discongests, discongests 15000r, discongest concentration control in mass percent 0.3%, be eventually adding relative to p-aramid fiber chopped strand
It is discongested with 0.05% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongests 15000r, discongested dense
Degree control obtains suspension in mass percent 0.3%, and obtained suspension is injected in sheet forming apparatus, is prepared quantification of
100g/m2Then aramid paper humidity strip squeezes processing 1min through hydraulic press under the pressure of 0.4MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 95 DEG C, and drying time is
5min obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper, hot pressing 2 times, hot pressing temperature are on vulcanizing press
240 DEG C, hot pressing time 2min, hot pressing pressure 9MPa；It is finally placed on three roller hot presses again hot pressing 1 time, hot pressing temperature is
220 DEG C, hot pressing pressure 100bar, roller speed is 0.5m/min to get aramid fiber extrusion coating paper.
Embodiment 2
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 3.0 × 10-31h is impregnated in mol/L, the neopelex solution that temperature is 60 DEG C, then washes 5 times, finally exists
Over dry is dried in 105 DEG C of vacuum ovens；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, in fluffer
25000r is discongested, discongests concentration control in mass percent 0.3%, 1.90g over dry meta-aramid pulp is then added and is dredged
Solution, discongest 25000r, discongest concentration control in mass percent 0.3%, be eventually adding relative to p-aramid fiber chopped strand with
0.07% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass are discongested, and are discongested 25000r, are discongested concentration
Control obtains suspension in mass percent 0.3%, and obtained suspension is injected in sheet forming apparatus, is prepared quantification of
100g/m2Then aramid paper humidity strip squeezes processing 3min through hydraulic press under the pressure of 0.6MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 105 DEG C, drying time
For 8min, aramid fiber extrusion coating paper body paper is obtained；By obtained aramid fiber extrusion coating paper body paper on vulcanizing press hot pressing 4 times, hot pressing temperature
It is 290 DEG C, hot pressing time 10min, hot pressing pressure 21MPa；It is finally placed on three roller hot presses again hot pressing 3 times, hot pressing temperature
Degree is 240 DEG C, hot pressing pressure 140bar, and roller speed is 1.5m/min to get aramid fiber extrusion coating paper.
Embodiment 3
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 240 DEG C, hot pressing time 6min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 56.9Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 4
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 250 DEG C, hot pressing time 6min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 80.0Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 5
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 260 DEG C, hot pressing time 6min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 106.0Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 6
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 270 DEG C, hot pressing time 6min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 161.2Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 7
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 6min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 212.6Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 8
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 290 DEG C, hot pressing time 6min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 131.7Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined 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 is optimized, and the Testing index of optimization is the measurement of tensile index, if the following table 1 is compression molding in optimization experiment
Influence of the machine 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 gradually increases, and 280 DEG C when being vulcanizing press hot pressing most
Good temperature.Since fiber is similar with the chemical structure of matrix, different melting points between the two are smaller, cause processing temperature section compared with
Narrow, inappropriate processing temperature can make the melting of fiber orientation structure and cause fiber proportion in entire material smaller,
Large effect caused to the performance of material, thus the selection of hot pressing temperature be the key that in aramid fiber extrusion coating paper preparation process because
Element.
Embodiment 9
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 6min, hot pressing pressure 9MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 90.4Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 10
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 6min, hot pressing pressure 12MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 143.9Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 11
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 6min, hot pressing pressure 18MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 192.5Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 12
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 6min, hot pressing pressure 21MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 143.8Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
In the aramid fiber extrusion coating paper preparation process of above embodiments 7,9,10,11,12, 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, if the following table 2 is optimization experiment
Influence of the middle vulcanizing press in different hot pressing pressures to aramid paper strength character:
Table 2
The result of optimization is as shown in Fig. 2, when carrying out hot pressing using vulcanizing press, under certain pressure section, with pressure
The tensile index of the raising of power, aramid fiber extrusion coating paper gradually increases, and under the pressure of 15Mpa, the paper performance of aramid fiber extrusion coating paper
It is best.
Embodiment 13
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 2min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 147.1Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 14
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 4min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 186.6Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 15
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 8min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, hot pressing
Temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 199.7Nmg that roller speed, which is 1m/min,-1Aramid fiber it is multiple
Combined paper.
Embodiment 16
P-aramid fiber chopped strand is pre-processed, preprocessing process are as follows: by p-aramid fiber chopped strand mole dense
Degree is 2.0 × 10-30.75h is impregnated in mol/L, the neopelex solution that temperature is 50 DEG C, then washing 4 times, most
Over dry is dried in 102 DEG C of vacuum ovens afterwards；The pretreated over dry p-aramid fiber chopped strand of 1.27g is weighed, is being discongested
Discongest 20000r in machine, discongest concentration control in mass percent 0.3%, be then added 1.90g over dry meta-aramid pulp into
Row is discongested, and 20000r is discongested, and discongests concentration control in mass percent 0.3%, is eventually adding relative to the chopped fibre of p-aramid fiber
It ties up and is discongested with 0.06% polyethylene oxide solutions of meta-aramid pulp fibers absolute dry mass, discongest 20000r, discongest
Concentration is controlled in mass percent 0.3%, obtains suspension, and obtained suspension is injected in sheet forming apparatus, is prepared quantitative
For 100g/m2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa, it is extra in wet sheet to remove
Moisture, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature is 100 DEG C, when drying
Between be 6.5min, obtain aramid fiber extrusion coating paper body paper；Aramid fiber extrusion coating paper body paper hot pressing 3 times, the hot pressing on vulcanizing press that will be obtained
Temperature is 280 DEG C, hot pressing time 10min, hot pressing pressure 15MPa；It is finally placed on three roller hot presses again hot pressing 2 times, heat
Pressing temperature is 230 DEG C, hot pressing pressure 120bar, and it to get tensile index is 157.2Nmg that roller speed, which is 1m/min,-1Aramid fiber
Extrusion coating paper.
In the aramid fiber extrusion coating paper preparation process of above embodiments 7,13,14,15,16, 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, if the following table 3 is optimization experiment
Influence of the middle vulcanizing press under different hot pressing times to aramid paper strength character:
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 gradually increases, and in hot pressing 6min, the paper of aramid fiber extrusion coating paper
Extensional can be best.
Contraposition obtained by aramid fiber extrusion coating paper preparation method using above-described embodiment 7/meta-aramid extrusion coating paper and Nomex
The physical property of 410 (0.13mm) paper compares, as a result as shown in table 4 below
Table 4
By above embodiments 3~16 can with obtain, using vulcanizing press carry out hot pressing, 280 DEG C of hot pressing temperature, hot pressing
Pressure 15MPa, hot pressing time 6min, in conjunction with hot pressing 2 times on three roller hot presses, hot pressing temperature is 230 DEG C, and hot pressing pressure is
120bar, roller speed are 1m/min, and aramid fiber extrusion coating paper tensile strength reaches maximum, i.e. 212.2Nmg-1.Using vulcanizing press
Hot press period, aramid fiber extrusion coating paper is at temperature and pressure dual effect, and hot pressing actual temperature is higher than actual setting temperature, in hot pressing
Temperature is higher than 273 DEG C of meta position pulp fibers glass transition temperature, and pulp fibers melting degree is higher, viscosity flow enhancing, closely
Ground is wrapped in chopped strand surface, and effectively bonded area becomes larger between fiber, and chopped strand is merged with intermolecular interpenetrate of pulp,
The phase interface adhesive property formed between chopped strand reinforced phase and pulp matrix phase is significantly promoted.Using three roller hot press heat
Pressure stage, aramid fiber extrusion coating paper are further promoted through hot pressing light action, surface strength of paper, and paper surface is more smooth, and evenness mentions
It rises, further improves paper strength performance.It is combined using vulcanizing press hot-pressing processing with three roller hot press hot-pressing processings
Hot pressing mode, the aramid fiber extrusion coating paper tensile index prepared is about 2 times of Nomex T410 paper tensile index.
Claims (7)
1. a kind of contraposition/meta-aramid extrusion coating paper preparation method, it is characterised in that: specifically includes the following steps:
Step 1, p-aramid fiber chopped strand is pre-processed；
Step 2, with fluffer will discongest for the first time through the pretreated p-aramid fiber chopped strand of step 1；Then add again
Enter meta-aramid pulp fibers, 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
Aramid fiber extrusion coating paper body paper；
Step 4, by the resulting aramid fiber 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:
Aramid fiber extrusion coating paper body paper hot pressing 2~4 times on vulcanizing press that step 3 is prepared first, are then placed on three rollers again
Hot pressing 1~3 time on hot press；
Hot compression parameters in the step 4 on three roller hot presses are as follows: hot pressing temperature is 220 DEG C~240 DEG C, hot pressing pressure
100bar~140bar, 0.5~1.5m/min of roller speed；
Hot compression parameters in step 4 on vulcanizing press are as follows: hot pressing temperature be 240 DEG C~290 DEG C, hot pressing time be 2min~
10min, hot pressing pressure are 9MPa~21MPa.
2. a kind of preparation method of contraposition/meta-aramid extrusion coating paper according to claim 1, it is characterised in that: the step
Rapid 1 preprocessing process are as follows:
By p-aramid fiber 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.
3. a kind of preparation method of contraposition/meta-aramid extrusion coating paper according to claim 1, it is characterised in that: the step
The mass ratio of p-aramid fiber chopped strand and meta-aramid pulp fibers is 4:6 in rapid 2.
4. a kind of preparation method of contraposition/meta-aramid extrusion coating paper according to claim 1, it is characterised in that: the step
Dispersing agent in rapid 2 is polyethylene glycol oxide, and additive amount is exhausted relative to p-aramid fiber chopped strand and meta-aramid pulp fibers
The 0.05%~0.07% of dry mass, that discongests for the first time discongests parameter are as follows: fluffer discongests 15000r~25000r；Second
That discongests discongests parameter are as follows: fluffer discongests 15000r~25000r；What third time was discongested discongests parameter are as follows: fluffer is discongested
15000r~25000r.
5. a kind of preparation method of contraposition/meta-aramid extrusion coating paper according to claim 1, it is characterised in that: step 3
Detailed process are as follows: by the resulting suspension injection sheet forming apparatus of step 2, prepare quantification of 100g/m2Aramid paper humidity strip,
Then processing 1min~3min is squeezed through hydraulic press, removes extra moisture in wet sheet, it finally will squeezing treated l Water Paper
Piece is dried in paper baker.
6. a kind of preparation method of contraposition/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 rapid 3.
7. a kind of preparation method of contraposition/meta-aramid extrusion coating paper according to claim 5, it is characterised in that: the step
Drying temperature in rapid 3 in paper baker is 95 DEG C~105 DEG C, and drying time is 5min~8min.
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