CN106223104B - A method of aramid fiber extrusion coating paper is prepared using PSA fiber - Google Patents
A method of aramid fiber extrusion coating paper is prepared using PSA fiber Download PDFInfo
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- CN106223104B CN106223104B CN201610602490.1A CN201610602490A CN106223104B CN 106223104 B CN106223104 B CN 106223104B CN 201610602490 A CN201610602490 A CN 201610602490A CN 106223104 B CN106223104 B CN 106223104B
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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
-
- 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
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- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of methods preparing aramid fiber extrusion coating paper using PSA fiber, specifically include following steps：PSA chopped strands are pre-processed；PSA chopped strands after pretreatment with fluffer discongest for the first time；Then meta-aramid pulp fibers are added, secondary discongest is carried out；Dispersant 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 squeezing, being dried；The aramid fiber extrusion coating paper body paper progress of gained is hot-forming, obtain aramid fiber extrusion coating paper.Aramid fiber extrusion coating paper preparation method 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 industry and material industry interleaving techniques field, it is related to that a kind of using PSA fiber to prepare aramid fiber multiple
The method of combined paper.
Background technology
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 substrate
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, national defense and military to can be used as insulating materials, electronic material, structural material
Using.
The production domesticization of meta-aramid paper base material is also faced with heavy problem, have the problem of material quality, fiber dispersion and it is wet
The problem of method net-forming process and equipment, especially hot press forming technology problem.The meta-position aramid fiber paper mechanical strength properties of formation are poor,
And parchmentizing phenomenon is serious, resistance to ag(e)ing is poor.The bottleneck further applied as restriction aramid paper.
PSA fiber, that is, polysulfones base nylon, chemical name be polyphenylsulfone terephthalamide fiber, English abbreviation PSA,
It is China's independent research, the high-performance synthetic fibers with independent intellectual property right.It is existing in its macromolecular chain segment structure to align again
There is a bit architecture, there is stable and regular molecular structure, crystallinity is high, and the degree of orientation is good.Polysulphonamide fiber has excellent
Heat resistance, chemical stability and electrical insulating property, resistance to thermooxidation outstanding.In 300 DEG C of hot-airs after 100 hours its
Strength retention is 80%, and in 350 DEG C of hot-airs after 50 hours, strength retention remains to reach 50%, and at 270 DEG C
Hereinafter, having good dimensional stability.Polysulphonamide fiber does not have fixed fusing point, 420 DEG C of high-temperature decomposition temperature or more, big
Even if not cracked if strand melts.Polysulphonamide fiber chemical stability protrudes, through 80 DEG C, 30% concentrated hydrochloric acid, sulphur
Acid, nitric acid treatment, fibrous mechanical property is slightly aobvious to be declined.Fiber is hydrophobic fibre, and dispersion effect is poor in water, in synthetic fibers
In the dispersion process of pulp material, it is easy wadding and gathers and influence paper-forming evenness and intensity.And preparing 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.
Invention content
It, can land productivity to greatest extent the object of the present invention is to provide a kind of method preparing aramid fiber extrusion coating paper using PSA fiber
With the high strength characteristics of chopped strand, the strength character of meta-position aramid fiber paper is improved.
The technical solution adopted in the present invention is, a method of aramid fiber extrusion coating paper is prepared using PSA fiber, is specifically included
Following steps：
Step 1, PSA chopped strands are pre-processed；
Step 2, with fluffer will discongest for the first time through the pretreated PSA chopped strands of step 1；Then it adds
Meta-aramid pulp fibers carry out secondary discongest；Dispersant 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, through squeezing, being dried
Aramid fiber extrusion coating paper body paper is obtained afterwards；
Step 4, the aramid fiber extrusion coating paper body paper progress obtained by step 3 is hot-forming, obtain aramid fiber extrusion coating paper.
The features of the present invention also characterized in that
The preprocessing process of wherein step 1 is：
By PSA chopped strands 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
It is dried to over dry in dry case.
The mass ratio of PSA chopped strands and meta-aramid pulp fibers is 4 wherein in step 2：6.
Dispersant wherein in step 2 is polyethylene glycol oxide, and additive amount is to be starched relative to PSA chopped strands and meta-aramid
The 0.05%~0.07% of dregs of rice fiber absolute dry mass, the parameter of discongesting discongested for the first time are：Fluffer discongest 15000r~
25000r；The parameter of discongesting discongested for the second time is：Fluffer discongests 15000r~25000r；What third time was discongested discongests parameter
For：Fluffer discongests 15000r~25000r.
The detailed process of wherein step 3 is：By in the suspension injection sheet forming apparatus obtained by 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.
The pressure of hydraulic press is 0.4MPa~0.6MPa wherein in step 3.
Drying temperature wherein in step 3 in paper baker is 95 DEG C~105 DEG C, drying time be 5min~
8min。
The detailed process of wherein step 4 is：
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 again
Hot pressing 1~3 time on three roller hot presses.
Hot compression parameters wherein in step 4 on vulcanizing press are：Hot pressing temperature is 240 DEG C~290 DEG C, hot pressing time
For 1min~5min, hot pressing pressure is 9MPa~21MPa.
Hot compression parameters wherein in step 4 on three roller hot presses are：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 PSA fibers and meta-aramid pulp fibers
As raw material, hot pressing temperature is controlled, temperature is made to be less than the fusing point of fiber so that PSA fibers table and partial melting, meta-aramid
Pulp fibers melt, and certain pressure condition makes paper crystallinity improve, and strand arrangement is more regular orderly,
Pulp fibers deformation and migration the result is that so that Inter-fiber voids become smaller and tail off, bonded area bigger between fiber, fiber knot
It closes closer, makes into paper tensile index and increase substantially, the advantages of PSA fiber reinforcement meta-position aramid fiber papers is can be to greatest extent
Ground utilizes the high strength characteristics of chopped strand, and effectively disperses heat flow density in hot pressing, so as to improve meta-aramid
The strength character of paper.
Description of the drawings
Fig. 1 is a kind of hot pressing middle plateform vulcanizer heat of method preparing aramid fiber extrusion coating paper using PSA fiber of the present invention
Press influence of the temperature to aramid paper strength character；
Fig. 2 is a kind of hot pressing middle plateform vulcanizer heat of method preparing aramid fiber extrusion coating paper using PSA fiber of the present invention
Press influence of the time to aramid paper strength character；
Fig. 3 is a kind of hot pressing middle plateform vulcanizer heat of method preparing aramid fiber extrusion coating paper using PSA fiber of the present invention
Influence of the pressure pressure to aramid paper strength character.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of method preparing aramid fiber extrusion coating paper using PSA fiber of the present invention, specifically includes following steps：
Step 1, PSA chopped strands are pre-processed；The preprocessing process of PSA chopped strands is：By PSA chopped strands
It is 1.0 × 10 in molar concentration-3Mol/L~3 × 10-3Mol/L, the neopelex that temperature is 40 DEG C~60 DEG C are molten
0.5h~1h is impregnated in liquid, is then washed 3~5 times, is finally dried to over dry in 100 DEG C~105 DEG C vacuum drying chambers.
Step 2, with fluffer will discongest for the first time through the pretreated PSA chopped strands of step 1；Then it adds
Meta-aramid pulp fibers carry out secondary discongest；Dispersant is finally added, third time is carried out and discongests, obtain suspension；
The mass ratio of PSA chopped strands and meta-aramid pulp fibers is 4：6, dispersant is polyethylene glycol oxide, additive amount
For 0.05%~0.07% relative to PSA chopped strands and meta-aramid pulp fibers absolute dry mass, that discongests for the first time dredges
Solving parameter is：Fluffer discongests 15000r~25000r, discongests concentration control in mass percent 0.3%；It discongests for the second time
Discongesting parameter is：Fluffer discongests 15000r~25000r, discongests concentration control in mass percent 0.3%；Third time is discongested
Parameter of discongesting be：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, through squeezing, being dried
Aramid fiber extrusion coating paper body paper is obtained afterwards；
The detailed process of step 3 is：By in the suspension injection sheet forming apparatus obtained by 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 aramid fiber extrusion coating paper body paper progress obtained by step 3 is hot-forming, obtain high performance aramid fiber extrusion coating paper；Step
Rapid 4 detailed process is：
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 again
Hot pressing 1~3 time on three roller hot presses；
Hot compression parameters on vulcanizing press are：Hot pressing temperature be 240 DEG C~290 DEG C, hot pressing time be 1min~
5min, hot pressing pressure are 9MPa~21MPa；
Hot compression parameters on three roller hot presses are：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
PSA chopped strands are pre-processed, preprocessing process is：It is 1.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 15000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 15000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.05% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
15000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 1min through hydraulic press under the pressure of 0.4MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 95 DEG C, drying time 5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in vulcanizing press
Upper hot pressing 2 times, hot pressing temperature are 240 DEG C, hot pressing time 1min, hot pressing pressure 9MPa；Then it is placed on three roller hot presses again
Upper hot pressing 1 time, hot pressing temperature are 220 DEG C, hot pressing pressure 100bar, and roller speed is 0.5m/min, and it is compound to obtain high performance aramid fiber
Paper.
Embodiment 2
PSA chopped strands are pre-processed, preprocessing process is：It is 3.0 × 10 in molar concentration-3Mol/L, temperature are
1h is impregnated in 60 DEG C of neopelex solution, is then washed 5 times, is finally dried in 105 DEG C of vacuum drying chambers absolutely
It is dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 25000r is discongested in fluffer, discongest concentration control in quality
Then percentage 0.3% weighs 1.90g over dry meta-aramid pulps, be added in the PSA chopped strand solution through discongesting, again
25000r is discongested, concentration control is discongested in mass percent 0.3%, will finally be starched relative to PSA chopped strands and meta-aramid
PSA chopped strands are added with meta-aramid pulp mixed serum in 0.07% polyethylene glycol oxide of dregs of rice fiber absolute dry mass, dredge
25000r is solved, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming apparatus
In, prepare quantification of 100g/m2Then aramid paper humidity strip is squeezed processing 3min under the pressure of 0.6MPa through hydraulic press, is removed
Remove moisture extra in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
It is 105 DEG C, drying time 8min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in vulcanizing press
Upper hot pressing 4 times, hot pressing temperature are 290 DEG C, hot pressing time 5min, hot pressing pressure 21MPa；Then it is placed on three roller hot presses again
Upper hot pressing 3 times, hot pressing temperature are 240 DEG C, hot pressing pressure 140bar, and roller speed is 1.5m/min, and it is compound to obtain high performance aramid fiber
Paper.
Embodiment 3
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added PSA chopped strands and is dredged with meta-aramid pulp mixed serum
20000r is solved, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming apparatus
In, prepare quantification of 100g/m2Then aramid paper humidity strip is squeezed processing 2min under the pressure of 0.5MPa through hydraulic press, is removed
Remove moisture extra in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
It is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in compression molding
Hot pressing 3 times on machine, hot pressing temperature are 240 DEG C, hot pressing time 4min, hot pressing pressure 18MPa；Then it is placed on three roller hot pressing again
Hot pressing 2 times on machine, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and it is 23.2N to obtain tensile index
m·g-1Aramid fiber extrusion coating paper.
Embodiment 4
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 250 DEG C, hot pressing time 4min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
54.3N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 5
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 260 DEG C, hot pressing time 4min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
63.5N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 6
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 4min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
79.6N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 7
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 280 DEG C, hot pressing time 4min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
67.8N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 8
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 290 DEG C, hot pressing time 4min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
62.1N·m·g-1Aramid fiber extrusion coating paper.
In the aramid fiber extrusion coating paper preparation process of above example 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, if the following table 1 is Optimal Experimental middle plateform sulphur
Influence of the change 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, with the raising of temperature, the tensile index of aramid fiber extrusion coating paper gradually increases, and 270 DEG C when being vulcanizing press hot pressing most
Good temperature.Since fiber is similar with the chemical constitution 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-wall-element model 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
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 1min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
48.2N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 10
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 2min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
63.2N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 11
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 3min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
71.8N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 12
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 5min, hot pressing pressure 18MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
74.4N·m·g-1Aramid fiber extrusion coating paper.
In the aramid fiber extrusion coating paper preparation process of above example 6,9,10,11,12, 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 2 is Optimal Experimental
Influence of the middle plateform vulcanizer under different hot pressing times to aramid paper strength character：
Table 2
The results are shown in Figure 1 for optimization, as shown in Figure 2, 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 4min, the paper of aramid fiber extrusion coating paper
Extensional can be best.
Embodiment 13
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 4min, hot pressing pressure 9MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
65.8N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 14
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 4min, hot pressing pressure 12MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
70.3N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 15
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 4min, hot pressing pressure 15MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
74.6N·m·g-1Aramid fiber extrusion coating paper.
Embodiment 16
PSA chopped strands are pre-processed, preprocessing process is：It is 2.0 × 10 in molar concentration-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 drying chambers
Over dry；The pretreated over dry PSA chopped strands of 1.27g are weighed, 20000r is discongested in fluffer, discongest concentration control in matter
Percentage 0.3% is measured, 1.90g over dry meta-aramid pulps are then weighed, is added in the PSA chopped strand solution through discongesting, then
It is secondary to discongest 20000r, it discongests concentration and controls in mass percent 0.3%, it finally will be relative to PSA chopped strands and meta-aramid
0.06% polyethylene glycol oxide of pulp fibers absolute dry mass is added in PSA chopped strands and meta-aramid pulp mixed serum,
20000r is discongested, concentration control is discongested in mass percent 0.3%, obtains suspension, obtained suspension is injected into sheet forming
In device, quantification of 100g/m is prepared2Then aramid paper humidity strip squeezes processing 2min through hydraulic press under the pressure of 0.5MPa,
Remove extra moisture in wet sheet, finally will squeezing treated that wet sheet is dried in paper baker, drying temperature
Degree is 100 DEG C, drying time 6.5min, obtains aramid fiber extrusion coating paper body paper；By obtained aramid fiber extrusion coating paper body paper first in tablet sulphur
Hot pressing 3 times on change machine, hot pressing temperature are 270 DEG C, hot pressing time 4min, hot pressing pressure 21MPa；Then it is placed on three rollers heat again
Hot pressing 2 times on press, hot pressing temperature are 230 DEG C, hot pressing pressure 120bar, and roller speed is 1m/min, and obtaining tensile index is
72.9N·m·g-1Aramid fiber extrusion coating paper.
In the aramid fiber extrusion coating paper preparation process of above example 6,13,14,15,16, 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 3 is Optimal Experimental
Influence of the middle plateform vulcanizer under different hot pressing pressures to aramid paper strength character：
Table 3
The results are shown in Figure 3 for optimization, from the figure 3, it may be seen that when carrying out hot pressing using vulcanizing press, in certain pressure section
Under, with the increase of pressure, the tensile index of aramid fiber extrusion coating paper gradually increases, and when hot pressing pressure is 18MPa, aramid fiber is compound
The paper performance of paper is best.
By above example 3~16 can with obtain, using vulcanizing press carry out hot pressing, 270 DEG C of hot pressing temperature, hot pressing
When pressure 18MPa, hot pressing time 4min, in conjunction with hot pressing on three roller hot presses 2 times, 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. 79.6Nmg-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 boundary 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 carries
It rises, further improves paper strength performance.It is combined with three roller hot press hot-pressing processings using vulcanizing press hot-pressing processing
Hot pressing mode, paper after three roller hot presses and vulcanizing press hot pressing is relatively used alone in the aramid fiber extrusion coating paper strength character prepared
It opens its tensile index and improves 23%.
Claims (6)
1. a kind of method preparing aramid fiber extrusion coating paper using PSA fiber, it is characterised in that：Specifically include following steps：
Step 1, PSA chopped strands are pre-processed；
Step 2, with fluffer will discongest for the first time through the pretreated PSA chopped strands of step 1；Then meta position is added
Ppta-pulp fibre carries out secondary discongest；Dispersant 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 squeezing, being dried
Aramid fiber extrusion coating paper body paper；
The detailed process of the step 3 is：By in the suspension injection sheet forming apparatus obtained by 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；
Step 4, the aramid fiber extrusion coating paper body paper progress obtained by step 3 is hot-forming, obtain aramid fiber extrusion coating paper；
The detailed process of the step 4 is：
The aramid fiber body paper that step 3 is prepared first hot pressing 2~4 times on vulcanizing press, are then placed on three roller hot presses again
Upper hot pressing 1~3 time；
Hot compression parameters in the step 4 on vulcanizing press are：Hot pressing temperature is 240 DEG C~290 DEG C, and hot pressing time is
1min~5min, hot pressing pressure are 9MPa~21MPa；
Hot compression parameters in the step 4 on three roller hot presses are：Hot pressing temperature is 220 DEG C~240 DEG C, hot pressing pressure
100bar~140bar, 0.5~1.5m/min of roller speed.
2. a kind of method preparing aramid fiber extrusion coating paper using PSA fiber according to claim 1, it is characterised in that：The step
Rapid 1 preprocessing process is：
By PSA chopped strands 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 drying chambers
In be dried to over dry.
3. a kind of method preparing aramid fiber extrusion coating paper using PSA fiber according to claim 1, it is characterised in that：The step
The mass ratio of PSA chopped strands and meta-aramid pulp fibers is 4 in rapid 2：6.
4. a kind of method preparing aramid fiber extrusion coating paper using PSA fiber according to claim 3, it is characterised in that：The step
Dispersant in rapid 2 is polyethylene glycol oxide, and additive amount is relative to PSA chopped strands and meta-aramid pulp fibers absolute dry mass
0.05%~0.07%, the parameter of discongesting discongested for the first time is：Fluffer discongests 15000r~25000r；It discongests for the second time
Discongesting parameter is：Fluffer discongests 15000r~25000r；The parameter of discongesting discongested of third time is：Fluffer discongest 15000r~
25000r。
5. a kind of method preparing aramid fiber extrusion coating paper using PSA fiber according to claim 1, it is characterised in that：The step
The pressure of hydraulic press is 0.4MPa~0.6MPa in rapid 3.
6. a kind of method preparing aramid fiber extrusion coating paper using PSA fiber according to claim 1, 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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| CN103485234A (en) * | 2013-10-22 | 2014-01-01 | 陕西科技大学 | Preparation method of mixed fiber system aramid paper |
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| CN101892611A (en) * | 2010-08-18 | 2010-11-24 | 骏源特种纸（上海）有限公司 | Processing technology of polysulfonamide insulation paper |
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