CN108824085A - A kind of aramid fiber far infrared transmission paper and preparation method thereof - Google Patents
A kind of aramid fiber far infrared transmission paper and preparation method thereof Download PDFInfo
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- CN108824085A CN108824085A CN201810736299.5A CN201810736299A CN108824085A CN 108824085 A CN108824085 A CN 108824085A CN 201810736299 A CN201810736299 A CN 201810736299A CN 108824085 A CN108824085 A CN 108824085A
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- aramid fiber
- aramid
- fiber
- carbon nanotube
- far infrared
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
Abstract
The present invention provides a kind of preparation methods of aramid fiber far infrared transmission paper.In the present invention, the p-aramid fiber chopped strand and para-aramid pulp fiber are as paper base functional material, the excellent characteristics high with specific strength, specific stiffness is big；Simultaneously, p-aramid fiber chopped strand and para-aramid pulp fiber are capable of forming the paper-like object (aramid fiber layer) with network, carbon nanotube can be filled in the network of the paper-like object, it can be combined closely with aramid fiber layer by hot-forming carbon nanotube, the aramid fiber far infrared transmission paper made possesses better Forming Quality and composite performance.Embodiment the result shows that, the far infrared emissivity of aramid fiber far infrared transmission paper provided by the invention can bear the counterweight of 300g and not break up up to 90%.
Description
Technical field
The present invention relates to far-infrared emission material technical fields, and in particular to a kind of aramid fiber far infrared transmission paper and its
Preparation method.
Background technique
Far infrared be it is a kind of positioned at be located at infrared wavelength range in light wave, wavelength in 3~100 μ ms,
Often it is not therefore easily perceived by humans, however far infrared but has life entity a considerable effect, after absorption of human body far infrared, body
Warm rising, telangiectasis, blood circulation are active, enhance the metabolism and the operating of body of human body with this.Far infrared
The excellent performance that line has makes it in application more extensive in life science and biologic medical field.At present only
A small amount of device that can launch outside remote red line, but due to the limitation for emitting far-infrared material person's character, these
Clutter is more in the far infrared that device is issued, and far infrared emissivity is lower.
A kind of new material of the carbon nanotube as far-infrared radiation source, with the same of good physical chemical property
When, the ratio for the far infrared that can launch is up to 90% or more, is a kind of ideal emitting far-infrared material.Mesh
Before, carbon nanotube is applied to emitting far-infrared be usually that carbon nanotube is coated on finished films (such as plastic film),
It is only simply to be laminated compound between the carbon nanotube layer and finished films of formation, compound place can generate larger between two kinds of materials
Energy missing, cannot play the characteristic of material itself completely.Therefore, the far infrared of the composite material obtained in this way
Line emissivity is lower, seriously constrains it and further applies.
Summary of the invention
The purpose of the present invention is to provide a kind of aramid fiber far infrared transmission paper and preparation method thereof, are mentioned using the present invention
The aramid fiber far infrared transmission paper that the method for confession is prepared has excellent far infrared emissivity, while having excellent
Mechanical performance.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical scheme：
The present invention provides a kind of preparation methods of aramid fiber far infrared transmission paper, include the following steps：
(1) by p-aramid fiber chopped strand with discongest agent and water mix after carry out first and discongest processing, gained fiber is washed
Low Temperature Plasma Treating is carried out after washing, by gained fiber with discongest agent and water mix after carry out second and discongest processing, obtain pair
Position aramid short fiber slurry；Ultrasonic treatment and mashing processing are successively carried out after para-aramid pulp fiber is mixed with water, are obtained
To para-aramid pulp fibre stuff；
(2) p-aramid fiber chopped strand slurry, para-aramid pulp fibre stuff in the step (1) are mixed with agent is discongested
It carries out discongesting processing after conjunction, gained aramid fiber slurry is coated in the single side of base film, it is thin in matrix after cured processing
The single side of film forms aramid fiber layer；
(3) by the surface of the alcohol-water dispersion of carbon nanotube aramid fiber layer in the step (2), through solid
Carbon nanotube layer is formed on the surface of the aramid fiber layer after change processing, described matrix film is removed afterwards through hot press molding, obtains
To aramid fiber far infrared transmission paper.
Preferably, p-aramid fiber chopped strand and para-aramid pulp fiber are received with carbon in step (3) in the step (1)
The mass ratio of mitron is (0.5~1.5)：(0.5~1.5)：(0.5~8).
Preferably, the length of p-aramid fiber chopped strand is 3~5mm in the step (1).
Preferably, the length of para-aramid pulp fiber is 1.2~1.8mm in the step (1).
Preferably, in the step (2) aramid fiber slurry base film single side coated weight be 0.2~1mL/cm2。
Preferably, in the step (3) carbon nanotube be crystal whisker-shaped multi-walled carbon nanotube.
Preferably, the concentration of carbon nanotube is 5~15mg/ in the alcohol-water dispersion liquid of carbon nanotube in the step (3)
mL；The alcohol-water dispersion liquid of carbon nanotube is 0.2~1mL/cm in the coated weight of aramid fiber layer surface2。
Preferably, temperature hot-forming in the step (3) is 200~400 DEG C, and pressure is 10~20MPa, and the time is
10~30min.
The present invention provides the aramid fiber far infrared transmission paper that preparation method described in above-mentioned technical proposal is prepared, by
Raw material including p-aramid fiber chopped strand, para-aramid pulp fiber and carbon nanotube is prepared, and the p-aramid fiber is short
It cuts fiber and para-aramid pulp fiber forms the paper-like object with network, it is described carbon nano-tube filled in the paper-like object
Network in.
Preferably, the aramid fiber far infrared transmission paper with a thickness of 0.25~0.35mm.
The present invention provides a kind of preparation methods of aramid fiber far infrared transmission paper, by p-aramid fiber chopped strand and dredge
First is carried out after solution agent and water mixing and discongests processing, will carry out Low Temperature Plasma Treating after gained fiber wash, by gained fibre
Tie up with discongest agent and water mix after carry out second and discongest processing, obtain p-aramid fiber chopped strand slurry；By para-aramid pulp
Fiber successively carries out ultrasonic treatment and mashing processing after mixing with water, obtain para-aramid pulp fibre stuff；By the contraposition
Aramid short fiber slurry, para-aramid pulp fibre stuff carry out discongesting processing after agent mixes with discongesting, and gained aramid fiber is fine
The single side that slurry is coated in base film is tieed up, forms aramid fiber layer in the single side of base film after cured processing；Carbon is received
The alcohol-water dispersion of mitron is on the surface of the aramid fiber layer, in the aramid fiber layer after cured processing
Surface forms carbon nanotube layer, removes described matrix film afterwards through hot press molding, obtains aramid fiber far infrared transmission paper.At this
In invention, the p-aramid fiber chopped strand and para-aramid pulp fiber have specific strength height, ratio as paper base functional material
The big excellent characteristics of rigidity；Meanwhile p-aramid fiber chopped strand and para-aramid pulp fiber are capable of forming with network
Paper-like object (aramid fiber layer), carbon nanotube can be filled in the network of the paper-like object, be received by hot-forming carbon
Mitron can combine closely with aramid fiber layer, and the aramid fiber far infrared transmission paper made possesses better Forming Quality and answers
Performance is closed, can be used for the heating cushions such as high-speed rail, aircraft, car.Embodiment the result shows that, aramid fiber provided by the invention
The far infrared emissivity of far infrared transmission paper can bear the counterweight of 300g and not break up up to 90%.Illustrate that the present invention mentions
The aramid fiber far infrared transmission paper of confession has excellent far infrared emissivity and mechanical performance.
In addition, preparation method provided by the invention is easy to operate, it is convenient for large-scale production.
Specific embodiment
The present invention provides a kind of preparation methods of aramid fiber far infrared transmission paper, include the following steps：
(1) by p-aramid fiber chopped strand with discongest agent and water mix after carry out first and discongest processing, gained fiber is washed
Low Temperature Plasma Treating is carried out after washing, by gained fiber with discongest agent and water mix after carry out second and discongest processing, obtain pair
Position aramid short fiber slurry；Ultrasonic treatment and mashing processing are successively carried out after para-aramid pulp fiber is mixed with water, are obtained
To para-aramid pulp fibre stuff；
(2) p-aramid fiber chopped strand slurry, para-aramid pulp fibre stuff in the step (1) are mixed with agent is discongested
It carries out discongesting processing after conjunction, gained aramid fiber slurry is coated in the single side of base film, it is thin in matrix after cured processing
The single side of film forms aramid fiber layer；
(3) by the surface of the alcohol-water dispersion of carbon nanotube aramid fiber layer in the step (2), through solid
Carbon nanotube layer is formed on the surface of the aramid fiber layer after change processing, described matrix film is removed afterwards through hot press molding, obtains
To aramid fiber far infrared transmission paper.
By p-aramid fiber chopped strand with discongest agent and water mix after carry out first and discongest processing, the progress of gained fiber is low
Isothermal plasma processing, by gained fiber with discongest agent and water mix after progress second discongest processing, it is chopped to obtain p-aramid fiber
Fibre stuff.In the present invention, the length of the p-aramid fiber chopped strand is preferably 3~5mm.The present invention is for the contraposition
The source of aramid short fiber does not have special restriction, using commercial goods well known to those skilled in the art.
The present invention discongests for carrying out described first and discongests agent used by processing and do not have special restriction, using this field
Agent is discongested known to technical staff；In the present invention, described to discongest agent and preferably include neopelex, polyethylene
Pyrrolidones (PVP), polyethylene oxide (PEO) or polyvinyl alcohol (PVA), more preferably neopelex.In this hair
In bright, the mass ratio for discongesting agent, p-aramid fiber chopped strand and water is preferably (0.009~0.011)：1：(50~150),
More preferably 0.01：1：100.The present invention handles not special restriction for described discongest, ripe using those skilled in the art
That knows discongests the technical solution of processing.
In the present invention, the washing is preferably washed.Present invention spy no for the concrete operation method of the washing
Different restriction, using the technical solution of washing well known to those skilled in the art.The present invention is described right using washing removal
The impurity on position aramid short fiber surface.
In the present invention, the pressure of the Low Temperature Plasma Treating is preferably 75~85Pa, more preferably 80Pa；Power
Preferably 75~85W, more preferably 80W；Time is preferably 2.5~3.5min, more preferably 3min.The present invention utilizes low temperature etc.
Gas ions processing further removes the minute impurities on p-aramid fiber chopped strand surface.
The present invention discongests for carrying out described second and discongests agent used by processing and do not have special restriction, using this field
Agent is discongested known to technical staff；In the present invention, described to discongest agent and preferably include neopelex, polyethylene
Pyrrolidones (PVP), polyethylene oxide (PEO) or polyvinyl alcohol (PVA), more preferably neopelex.In this hair
In bright, the mass ratio for discongesting agent, p-aramid fiber chopped strand and water is preferably (0.009~0.011)：1：(50~150),
More preferably 0.01：1：100.The present invention handles not special restriction for described discongest, ripe using those skilled in the art
That knows discongests the technical solution of processing.
The present invention is successively ultrasonically treated after mixing para-aramid pulp fiber with water and mashing processing, is aligned
Ppta-pulp fibre slurry.In the present invention, the length of the para-aramid pulp fiber is preferably 1.2~1.8mm.The present invention
There is no special restriction for the source of the para-aramid pulp fiber, using commercial goods well known to those skilled in the art
?.In the present invention, the mass ratio of the para-aramid pulp fiber and water is preferably 1：(50~150), more preferably 1：
100.In the present invention, the time of the ultrasonic treatment is preferably 20~30min；Power of the present invention for the ultrasonic treatment
There is no special restriction, using power well known to those skilled in the art.The present invention handles without spy the mashing
Different restriction, using the technical solution of mashing processing well known to those skilled in the art；In the present invention, described to be beaten
Beating degree is preferably 40~50 ° of SR in journey, more preferably 45 ° of SR.
After obtaining p-aramid fiber chopped strand slurry and para-aramid pulp fibre stuff, the present invention is by the p-aramid fiber
Chopped strand slurry, para-aramid pulp fibre stuff carry out discongesting processing after agent mixes with discongesting, and gained aramid fiber is starched
Material is coated in the single side of base film, forms aramid fiber layer in the single side of base film after cured processing.The present invention for
It is described to discongest agent and there is no special restriction, agent is discongested using well known to those skilled in the art；In the present invention, described to dredge
Solution agent preferably includes anionic polyacrylamide, neopelex, polyvinylpyrrolidone (PVP), polyethylene oxide
(PEO) or polyvinyl alcohol (PVA), more preferably anionic polyacrylamide.In the present invention, the quality for discongesting agent is preferred
It is the 0.8~1.2% of p-aramid fiber chopped strand and para-aramid pulp total fiber mass, more preferably 1%.The present invention for
Described discongest handles not special restriction, using the technical solution well known to those skilled in the art for discongesting processing.
In the present invention, the coating preferably sprays；The present invention restriction not special for the spraying, using this
The technical solution sprayed known to the technical staff of field.In the present invention, the aramid fiber slurry is in base film list
The coated weight in face is preferably 0.2~1mL/cm2。
The present invention does not have described matrix film special restriction, using base film well known to those skilled in the art
?；In an embodiment of the present invention, tempering film is specifically used.In the present invention, the thickness of described matrix film is preferably 0.8
~1.2mm, more preferably 1mm.The present invention does not have the size of described matrix film special restriction, according to practical need
Select the size of described matrix film；In an embodiment of the present invention, the size of described matrix film is specially
A4 paper size, i.e. 210mm × 297mm.In the present invention, described matrix film mainly plays substrate effect, be able to bear pressure with
High temperature, and be suitble to cut separation.
In the present invention, the temperature of the curing process is preferably 80~120 DEG C, and more preferably 90~100 DEG C；Time is excellent
It is selected as 1~3h, more preferably 2h.In the present invention, the curing process can make the aramid fiber coated in base film single side fine
The solidification of slurry preliminarily dried is tieed up, forms aramid fiber layer in the single side of base film.
After the single side of base film forms aramid fiber layer, the present invention is by the alcohol-water dispersion of carbon nanotube
On the surface of the aramid fiber layer, carbon nanotube layer is formed on the surface of the aramid fiber layer after cured processing, through heat
Described matrix film is removed after molded, obtains aramid fiber far infrared transmission paper.In the present invention, the p-aramid fiber is chopped
The mass ratio of fiber, para-aramid pulp fiber and carbon nanotube is preferably (0.5~1.5)：(0.5~1.5)：(0.5~8),
More preferably 1：1：(1~4), most preferably 1：1：2.
In the present invention, the carbon nanotube is preferably the multi-walled carbon nanotube of crystal whisker-shaped.In the present invention, the carbon is received
Preferably 2~5 μm of the length of mitron, diameter preferably 30~150nm.In the present invention, the carbon nanotube is preferably according to document
(Sun X G,Qiu Z W,Chen L,et al.Industrial synthesis of Whisker carbon
nanotubes[C]//Materials Science Forum.Trans Tech Publications Ltd.,2016,852:
514) method disclosed in is prepared；Being prepared in this way is linear type high-purity high-crystallinity carbon nanotube.?
In the present invention, the concentration of carbon nanotube is preferably 5~15mg/mL in the alcohol-water dispersion liquid of the carbon nanotube, more preferably
8~12mg/mL；The volume ratio of ethyl alcohol and water is preferably 1：(10~30), more preferably 1：20.The present invention is for the carbon nanometer
The preparation method of the alcohol-water dispersion liquid of pipe does not have special restriction, using material dispersion well known to those skilled in the art
Technical solution；The present invention is successively stirred, is ultrasonically treated and shears after preferably mixing carbon nanotube, second alcohol and water
Processing, obtains the alcohol-water dispersion liquid of carbon nanotube.The present invention restriction not special for the stirring, using this field
The carbon nanotube, second alcohol and water are tentatively uniformly mixed by the technical solution stirred known to technical staff.In the present invention
In, the time of the ultrasonic treatment is preferably 10~30min, more preferably 20min；Function of the present invention for the ultrasonic treatment
Rate does not have special restriction, using power well known to those skilled in the art.In the present invention, turn of the shear treatment
Speed is preferably 1800~2200r/min, more preferably 2000r/min；Time is preferably 10~30min, more preferably 20min.
The present invention is uniformly dispersed in carbon nanotube in ethanol-water solution by ultrasonic treatment and shear treatment.
In the present invention, the coating preferably sprays；The present invention restriction not special for the spraying, using this
The technical solution sprayed known to the technical staff of field.In the present invention, the alcohol-water dispersion liquid of the carbon nanotube exists
The coated weight of aramid fiber layer surface is preferably 0.2~1mL/cm2。
In the present invention, the temperature of the curing process is preferably 80~120 DEG C, and more preferably 90~100 DEG C；Time is excellent
It is selected as 22~26h, more preferably for 24 hours.In the present invention, the curing process can make the carbon coated in aramid fiber layer surface
The alcohol-water dispersion liquid preliminarily dried of nanotube solidifies, and forms carbon nanotube layer on the surface of aramid fiber layer；And make the virtue
P-aramid fiber chopped strand and para-aramid pulp fiber preliminarily form network in synthetic fibre fibrous layer.
In the present invention, the hot-forming temperature is preferably 200~400 DEG C, and more preferably 300 DEG C；Pressure is preferred
For 10~20MPa, more preferably 15MPa；Time is preferably 10~30min, more preferably 20min.In the present invention, the heat
It is molded preferably to carry out under vacuum conditions.In the present invention, it is described it is hot-forming can further by carbon nanotube be pressed by
Among the porous network that aramid fiber slurry is formed, realize that carbon nanotube and p-aramid fiber chopped strand and para-aramid pulp are fine
That ties up is compound.
The present invention provides the aramid fiber far infrared transmission paper that preparation method described in above-mentioned technical proposal is prepared, by
Raw material including p-aramid fiber chopped strand, para-aramid pulp fiber and carbon nanotube is prepared, and the p-aramid fiber is short
It cuts fiber and para-aramid pulp fiber forms the paper-like object with network, it is described carbon nano-tube filled in the paper-like object
Network in.In the present invention, the thickness of the aramid fiber far infrared transmission paper is preferably 0.25~0.35mm, more excellent
It is selected as 0.3mm.
Below in conjunction with the embodiment in the present invention, the technical solution in the present invention is clearly and completely described.It is aobvious
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Embodiment 1
1g p-aramid fiber chopped strand (length is 3~5mm) is mixed with 0.01g neopelex and 100mL water
It carries out discongesting processing after conjunction, will be carried out at low temperature plasma under conditions of pressure 80Pa, power 80W after gained fiber washing
3min is managed, carries out discongesting processing after gained fiber is mixed with 0.01g neopelex and 100mL water, be aligned
Aramid short fiber slurry；
It is ultrasonically treated after 1g para-aramid pulp fiber (length is 1.2~1.8mm) is mixed with 100mL water
Then 20min carries out mashing processing, control beating degree is 40 ° of SR, obtains para-aramid pulp fibre stuff；
By the p-aramid fiber chopped strand slurry, para-aramid pulp fibre stuff and discongest agent anion pp acyl
It carries out discongesting processing after amine (additive amount be p-aramid fiber chopped strand and para-aramid pulp total fiber mass 1%) mixing,
Gained aramid fiber slurry is sprayed on to the single side of tempering film (with a thickness of 1mm, size is 210mm × 297mm), 80 DEG C of items
Single side under part after cured processing 1h in tempering film forms aramid fiber layer；
By the multi-walled carbon nanotube of 2g crystal whisker-shaped (length is 2~5 μm, and diameter is 30~150nm) and 10mL ethyl alcohol and
It is stirred after the mixing of 200mL water, carries out ultrasonic treatment 10min later, shear treatment is finally carried out under the conditions of 2000r/min
10min obtains the alcohol-water dispersion liquid of carbon nanotube；
The alcohol-water dispersion liquid of the carbon nanotube is sprayed on to the surface of the aramid fiber layer, is passed through under the conditions of 80 DEG C
Curing process for 24 hours after the aramid fiber layer surface formed carbon nanotube layer, in vacuum environment, 10MPa, 200 DEG C of items
It removes tempering film under part after 10min through hot press molding, aramid fiber far infrared transmission paper is obtained, with a thickness of 0.3mm.
The far infrared emissivity of aramid fiber far infrared transmission paper manufactured in the present embodiment is tested using thermal infrared imager,
The far infrared emissivity of the aramid fiber far infrared transmission paper is up to 90% as the result is shown；It is fine in aramid fiber manufactured in the present embodiment
Counterweight is hung in the lower section for tieing up far infrared transmission paper, to test its intensity, as a result, it has been found that the aramid fiber far infrared transmission paper can
To bear the counterweight of 300g and not break up.It is good remote red to illustrate that aramid fiber far infrared transmission paper provided by the invention has
Outside line emissivity and mechanical performance.
Embodiment 2
2g p-aramid fiber chopped strand (length is 3~5mm) is mixed with 0.02g neopelex and 200mL water
It carries out discongesting processing after conjunction, will be carried out at low temperature plasma under conditions of pressure 80Pa, power 80W after gained fiber washing
3min is managed, carries out discongesting processing after gained fiber is mixed with 0.02g neopelex and 200mL water, be aligned
Aramid short fiber slurry；
It is ultrasonically treated after 2g para-aramid pulp fiber (length is 1.2~1.8mm) is mixed with 200mL water
Then 30min carries out mashing processing, control beating degree is 45 ° of SR, obtains para-aramid pulp fibre stuff；
By the p-aramid fiber chopped strand slurry, para-aramid pulp fibre stuff and discongest agent anion pp acyl
It carries out discongesting processing after amine (additive amount be p-aramid fiber chopped strand and para-aramid pulp total fiber mass 1%) mixing,
Gained aramid fiber slurry is sprayed on to the single side of tempering film (with a thickness of 1mm, size is 210mm × 297mm), 100 DEG C
Under the conditions of it is cured processing 2h after tempering film single side formed aramid fiber layer；
By the multi-walled carbon nanotube of 2g crystal whisker-shaped (length is 2~5 μm, and diameter is 30~150nm) and 10mL ethyl alcohol and
It is stirred after the mixing of 200mL water, carries out ultrasonic treatment 20min later, shear treatment is finally carried out under the conditions of 2000r/min
20min obtains the alcohol-water dispersion liquid of carbon nanotube；
The alcohol-water dispersion liquid of the carbon nanotube is sprayed on to the surface of the aramid fiber layer, is passed through under the conditions of 100 DEG C
Curing process for 24 hours after the aramid fiber layer surface formed carbon nanotube layer, in vacuum environment, 15MPa, 300 DEG C of items
It removes tempering film under part after 20min through hot press molding, aramid fiber far infrared transmission paper is obtained, with a thickness of 0.3mm.
According to the method for embodiment 1 to the far infrared emissivity of aramid fiber far infrared transmission paper manufactured in the present embodiment
It is tested with mechanical performance, it is as a result almost the same with embodiment 1.
Embodiment 3
1g p-aramid fiber chopped strand (length is 3~5mm) is mixed with 0.01g neopelex and 100mL water
It carries out discongesting processing after conjunction, will be carried out at low temperature plasma under conditions of pressure 80Pa, power 80W after gained fiber washing
3min is managed, carries out discongesting processing after gained fiber is mixed with 0.01g neopelex and 100mL water, be aligned
Aramid short fiber slurry；
It is ultrasonically treated after 1g para-aramid pulp fiber (length is 1.2~1.8mm) is mixed with 100mL water
Then 30min carries out mashing processing, control beating degree is 50 ° of SR, obtains para-aramid pulp fibre stuff；
By the p-aramid fiber chopped strand slurry, para-aramid pulp fibre stuff and discongest agent anion pp acyl
It carries out discongesting processing after amine (additive amount be p-aramid fiber chopped strand and para-aramid pulp total fiber mass 1%) mixing,
Gained aramid fiber slurry is sprayed on to the single side of tempering film (with a thickness of 1mm, size is 210mm × 297mm), 120 DEG C
Under the conditions of it is cured processing 2h after tempering film single side formed aramid fiber layer；
By the multi-walled carbon nanotube of 4g crystal whisker-shaped (length is 2~5 μm, and diameter is 30~150nm) and 20mL ethyl alcohol and
It is stirred after the mixing of 400mL water, carries out ultrasonic treatment 30min later, shear treatment is finally carried out under the conditions of 2000r/min
30min obtains the alcohol-water dispersion liquid of carbon nanotube；
The alcohol-water dispersion liquid of the carbon nanotube is sprayed on to the surface of the aramid fiber layer, is passed through under the conditions of 120 DEG C
Curing process for 24 hours after the aramid fiber layer surface formed carbon nanotube layer, in vacuum environment, 20MPa, 400 DEG C of items
It removes tempering film under part after 30min through hot press molding, aramid fiber far infrared transmission paper is obtained, with a thickness of 0.3mm.
According to the method for embodiment 1 to the far infrared emissivity of aramid fiber far infrared transmission paper manufactured in the present embodiment
It is tested with mechanical performance, it is as a result almost the same with embodiment 1.
As seen from the above embodiment, there is aramid fiber far infrared transmission paper provided by the invention excellent far infrared to send out
Penetrate rate and mechanical performance；In addition, preparation method provided by the invention is easy to operate, it is convenient for large-scale production.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of preparation method of aramid fiber far infrared transmission paper, includes the following steps：
(1) by p-aramid fiber chopped strand with discongest agent and water mix after carry out first and discongest processing, after gained fiber wash
Carry out Low Temperature Plasma Treating, by gained fiber with discongest agent and water mix after carry out second and discongest processing, obtain aligning fragrant
Synthetic fibre chopped strand slurry；Ultrasonic treatment and mashing processing are successively carried out after para-aramid pulp fiber is mixed with water, are obtained pair
Position ppta-pulp fibre slurry；
(2) it by p-aramid fiber chopped strand slurry in the step (1), para-aramid pulp fibre stuff and discongests after agent mixes
It carries out discongesting processing, gained aramid fiber slurry is coated in the single side of base film, in base film after cured processing
Single side forms aramid fiber layer；
(3) by the surface of the alcohol-water dispersion of carbon nanotube aramid fiber layer in the step (2), cured place
Carbon nanotube layer is formed on the surface of the aramid fiber layer after reason, described matrix film is removed afterwards through hot press molding, obtains virtue
Synthetic fibre fiber far infrared transmission paper.
2. preparation method according to claim 1, which is characterized in that in the step (1) p-aramid fiber chopped strand and
The mass ratio of carbon nanotube is (0.5~1.5) in para-aramid pulp fiber and step (3)：(0.5~1.5)：(0.5~8).
3. preparation method according to claim 1 or 2, which is characterized in that p-aramid fiber chopped strand in the step (1)
Length be 3~5mm.
4. preparation method according to claim 1 or 2, which is characterized in that para-aramid pulp fiber in the step (1)
Length be 1.2~1.8mm.
5. preparation method according to claim 1, which is characterized in that aramid fiber slurry is in matrix in the step (2)
The coated weight of film single side is 0.2~1mL/cm2。
6. preparation method according to claim 1 or 2, which is characterized in that carbon nanotube is crystal whisker-shaped in the step (3)
Multi-walled carbon nanotube.
7. preparation method according to claim 1, which is characterized in that the alcohol-water of carbon nanotube point in the step (3)
The concentration of carbon nanotube is 5~15mg/mL in dispersion liquid；Painting of the alcohol-water dispersion liquid of carbon nanotube in aramid fiber layer surface
The amount of covering is 0.2~1mL/cm2。
8. preparation method according to claim 1, which is characterized in that hot-forming temperature is 200 in the step (3)
~400 DEG C, pressure is 10~20MPa, and the time is 10~30min.
9. the aramid fiber far infrared transmission paper that any one of claim 1~8 preparation method is prepared, by including contraposition
The raw material of aramid short fiber, para-aramid pulp fiber and carbon nanotube is prepared, the p-aramid fiber chopped strand and
Para-aramid pulp fiber forms the paper-like object with network, the carbon nano-tube filled grid knot in the paper-like object
In structure.
10. aramid fiber far infrared transmission paper according to claim 9, which is characterized in that the aramid fiber far infrared
Emit paper with a thickness of 0.25~0.35mm.
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