CN1834342A - Meta-aramid paper and preparation method thereof - Google Patents
Meta-aramid paper and preparation method thereof Download PDFInfo
- Publication number
- CN1834342A CN1834342A CN 200610043659 CN200610043659A CN1834342A CN 1834342 A CN1834342 A CN 1834342A CN 200610043659 CN200610043659 CN 200610043659 CN 200610043659 A CN200610043659 A CN 200610043659A CN 1834342 A CN1834342 A CN 1834342A
- Authority
- CN
- China
- Prior art keywords
- meta
- aramid
- slurry
- paper
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004760 aramid Substances 0.000 title claims abstract description 69
- 229920003235 aromatic polyamide Polymers 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 76
- 239000000835 fiber Substances 0.000 claims abstract description 64
- 239000002002 slurry Substances 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000006185 dispersion Substances 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims description 25
- 230000015556 catabolic process Effects 0.000 claims description 24
- 238000006731 degradation reaction Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 18
- 238000005516 engineering process Methods 0.000 claims description 14
- 238000010009 beating Methods 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000013459 approach Methods 0.000 claims description 9
- 230000001376 precipitating effect Effects 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 230000001413 cellular effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 229920001131 Pulp (paper) Polymers 0.000 claims description 3
- 244000007853 Sarothamnus scoparius Species 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 239000011268 mixed slurry Substances 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 238000004079 fireproofing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 239000012780 transparent material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 239000000126 substance Substances 0.000 abstract description 12
- 239000002270 dispersing agent Substances 0.000 abstract description 6
- 229920002994 synthetic fiber Polymers 0.000 abstract description 5
- 238000010292 electrical insulation Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 3
- 238000003490 calendering Methods 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract 1
- 239000012209 synthetic fiber Substances 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 4
- -1 polyparaphenylene Polymers 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 2
- 229920000265 Polyparaphenylene Polymers 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000013064 chemical raw material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- MHSKRLJMQQNJNC-UHFFFAOYSA-N terephthalamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1 MHSKRLJMQQNJNC-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Landscapes
- Paper (AREA)
Abstract
The invention relates to aramid paper and a preparation method thereof, belonging to the technical field of synthetic fiber paper manufacture. The method is characterized in that pure meta-aramid fiber is adopted to prepare meta-aramid paper, 1, according to the weight percentage, 5 to 95 percent of meta-aramid chopped fiber is added into water to prepare slurry, 5 to 95 percent of meta-aramid fibrid is added into the water to prepare slurry, and the two types of slurry are mixed; 2. forming the slurry on a net; 3. squeezing and drying; 4. and high-temperature calendaring and forming. The invention abandons the dependence of raw material dispersion on auxiliary chemical raw materials, solves the dispersion problem in the raw material manufacturing stage, and can realize the uniform dispersion of papermaking pulp without using chemical additives; the problems of high cost of the dispersant, increased sewage treatment burden and influence on temperature resistance caused by the dispersant molecules contained in the finished paper are solved, and the performance of the finished paper is greatly improved; the produced aramid paper has better evenness, mechanical strength, heat resistance and dielectric property, and is used in the fields of electrical insulation, aerospace, transportation and the like.
Description
One, technical field
The present invention relates to a kind of meta-position aramid fiber paper and preparation method, belong to synthetic fibre paper manufacturing technology field.
Two, background technology
1, application number: 200410026569.1 applications for a patent for invention provide a kind of preparation method of polyfiber amide paper, comprise the steps: in water to add the Fanglun slurry cake of the aramid fiber short fibre of 20-90% or polyparaphenylene Ben Bing Er oxazole fiber, 0-40% aramid fiber fibrillating fibre or polyparaphenylene Ben Bing Er oxazole fibrillating fibre, 1-80% and dispersing aid, raw material obtains slurry after disperseing; Approach flow is shaped; Dehydration, squeezing, drying; Hot-forming; The ratio of above-mentioned each component is weight percentage.This invention can effectively solve key technical problem in the aramid fiber fabrication technique made of paper, make its technology more reasonable, can effectively improve the mechanical performance such as tensile strength, tearing strength, tearability, ABRASION RESISTANCE of the evenness of aramid fiber paper and paper and have better elastic and pliability.
2, application number: 200410037774.8 applications for a patent for invention provide a kind of carbon fiber aramid fiber synthetic paper and the wet method technology of manufacturing paper with pulp, and relate to a kind ofly being structural fibers, being aided with the synthetic fibre paper that bondable fibers is made with carbon fiber and aramid fiber; This synthetic fibre paper has excellent specific properties such as lightweight, softness, high strength, high ratio modulus, high temperature resistant, endurance, resist chemical, good electrical conductivity and thermal conductivity, low thermal coefficient of expansion, good biocompatibility, can be widely used in high-tech sectors such as electromechanics, aviation; This invention also provides the wet preparation method of this kind synthetic fibre paper.
3, application number: 99125156.3 applications for a patent for invention provide a kind of completely aromatic-polyamide-fiber synthesized paper sheet technology, it contains the adhesive component of the aramid staple fiber component and the 4-30% weight of 70-96% weight, be a kind of resin binder and/or heat-resisting fine strip body, this aramid staple fiber component comprises 30% weight or higher counterpoint type aramid staple fiber, and each root has the maximum gauge R of two or more annular protrusions spaced apart from each other and the mean ratio R/r of staple fibre ringless-type bossing minimum diameter r is 1.1 or bigger.
4, application number: the laminated plate material technology that 00810718.1 application for a patent for invention provides a kind of Wholly aromatic polyamide fiber paper and made from it, it is by forming by the formed Wholly aromatic polyamide fiber of fiber spinning from crystalline state.This fibrous paper can demonstrate high electrical insulation reliability, excellent back dimensional stability under heat and high heat resistance as the basic material of the substrate of circuit and it under high humility.
5, the patent No.: 93106746.4 applications for a patent for invention provide a kind of method and technology for preparing the powerful aramid paper of high-air-permeability, by the calendered paper of being made up of poly-(poly P phenylene diamine terephthalamide) staple fibre and poly-(mpd-i) fibrid is heat-treated, paper is forced when hot, plus-pressure not, be at least heating 12-100 second under 249 ℃ of temperature, thus the paper that has obtained having the tensile strength of improvement and improved air permeability.
Above-mentioned relevant prior art patent all adopts para-aramid fiber to make the preparation raw material of aramid fiber paper basically, DIMENSIONAL STABILITY and the insulating properties of the aramid fiber paper product of this raw material under high temperature, super-humid conditions is better, but because the elongation at break of p-aramid fiber only is about 2.5%, and p-aramid fiber symmetry degree of orientation and degree of crystallinity are than meta-aramid height, molecule inward turning difficulty, the difficult hydrogen bond action that forms, just because of above-mentioned weakness, the aramid fiber paper mechanical property of above several method preparation is relatively poor, is difficult to be applied to insulating materials field more widely; In addition, there is an obvious problem in prior art for preparing aramid fiber paper in the feedstock production process, i.e. the scattering problem of aramid fiber in water is because the molecule of polyfiber amide is a rigid structure, and the p-aramid fiber surface shows bigger chemical inertness, thereby in water, be difficult to disperse, and make high-intensity aramid fiber paper, aramid fiber short fibre must have enough length, it is poly-that this makes aramid fiber be easy to wadding in water, paper-forming evenness is poor, influences paper quality, and the paper feeding machine is manufactured paper with pulp and brought certain difficulty.
Three, summary of the invention
The object of the present invention is to provide a kind of can be aspect raw material and dispersion and press polish technical elements overcome meta-position aramid fiber paper of prior art deficiency and preparation method thereof.
A kind of meta-position aramid fiber paper preparation method adopts pure meta-aramid fibers to make meta-position aramid fiber paper, and step is as follows:
(1), the meta-aramid staple fiber that adds 5-95% (percentage by weight) in water is made slurry after dispersing apparatus disperses, the meta-aramid fibre fibrid that adds 5-95% (percentage by weight) in water is made slurry after dispersing apparatus disperses, slurry after above-mentioned two kinds of dispersions mixes, and obtains mixed slurry;
(2), approach flow is shaped; (3), squeezing, drying; (4), high-temperature high-pressure Seterolithography.
Meta-aramid fibers, it is the aramid fiber 1313 fiber, full name is a Fanglun 1313, it is a kind of good high-temperature fibre, have good physical and mechanical properties, chemical stability, heat endurance, anti-flammability, electrical insulating property and radiation resistance, be widely used in fields such as high-temperature-resistant filtering material, high-temperature protective clothes, electric insulation;
The meta-aramid insulating paper is as the back converted products of aramid fiber 1313 fiber, have favorable mechanical performance and insulating properties, be a kind of special fibre paper of high added value, this meta-position aramid fiber paper can be used as high-temperature insulation material and is used for electric insulation fields such as motor, transformer manufacturing, also can be used as cellular structural material and is used for high-tech areas such as Aero-Space and bullet train;
The described meta-aramid staple fiber short section fibre that continuous meta-aramid long fiber is cut into of serving as reasons, adopt spray silk, hot drawing-off and cut off Processes and apparatus, produce aramid short fiber, can solve the poly-problem of the wadding of meta-aramid staple fiber in approach system with good dispersiveness and mechanical strength;
Described meta-aramid fibre fibrid is similar to the meta-aramid fibers of string paper pulp for the outer appearnce through the precipitating device processes, change the odontoid of precipitating equipment, the lines of occlusion of tooth and tooth is processed near straight line, strengthen of the shearing of precipitating equipment to raw material, improve its shaped state, produce the fibrid that beating degree and fibrous binding force all meet the papermaking requirement;
Described meta-aramid staple fiber and the percentage by weight of meta-aramid fibre fibrid in raw material can be determined according to the material field of using: when preparing the paper that insulation can be had relatively high expectations, if be used for all kinds of motors, transformer, when power supply is used insulating materials, the preferential percentage by weight of meta-aramid fibers is 40-60%; When preparation electromagnetic wave transparent material cellular material, select the meta-aramid fibers of content 60%-80% for use; When preparation structural material cellular material, fire proofing, select the meta-aramid fibers of 70%-90% for use; When the preparation diaphragm of loudspeaker, select the meta-aramid fibers of 60%-90% for use;
The treated slurry of making of described meta-aramid staple fiber, process comprises following flow process:
1) pulper size degradation: after the finished product staple fiber is opened bag, drop in the hydrabrusher, add deionized water, dense size degradation in carrying out, size degradation concentration is 2-4%;
2) allotment slurry concentration: the slurries behind the size degradation are transported to the allotment stock tank with stock pump, add deionized water, the allotment slurry concentration is to 1-1.5%;
3) desander purifies: deployed slurry is transported to conical refiner with stock pump purifies, the impurity that proportion is bigger is removed;
The treated slurry of making of described meta-aramid fibre fibrid, process comprises following flow process:
1) pulper size degradation: after the finished product fibrid is opened bag, drop in the hydrabrusher, add deionized water, carry out high dense size degradation, size degradation concentration is 5-8%;
2) unload kiln basin: the slurries behind the size degradation are transported to stock pump unload kiln basin, store capacity so that operation is used afterwards;
3) making beating is discongested: unload slurry in the kiln basin and be transported to the making beating equipment of discongesting with stock pump and handle, make fiber reach good wire-dividing broom purification and discongest effect;
4) allocate slurry concentration: the slurries after making beating is discongested are put in the allotment stock tank, add deionized water, and the allotment slurry concentration is to 1-1.5%;
5) desander purifies: deployed slurry is transported to conical refiner with stock pump purifies, the impurity that proportion is bigger is removed;
Described approach flow forming process is that above-mentioned two kinds of slurries mix the back dilution, through the good slurry of pressurized screen screening Top wire former; The preferred special-purpose tiltedly oblique net forming technique of net former; Under the situation that improves the speed of a motor vehicle, be between the 0.96-1.02 by the ratio of regulating slurry speed and network speed, progressively improve the poor in length and breadth of paper strength; This long fibered paper of aramid fiber paper of manufacturing paper with pulp, oblique net paper machine is a best equipment, the former of oblique net paper machine is relatively to be fit to manufacture paper with pulp the former of meta-position aramid fiber paper; Online concentration under relatively also definite different basis weights is at 0.01-0.05%;
Described squeezing, drying process are as follows:
1) squeezing process adopts two one press dewatering of blanket of two rollers;
2) described drying process is a composite drying; At first adopt contactless far-infrared dryer to carry out drying, adopt traditional contact cylinder dried then; Drying process precoating nano-particle material SPT-915S adopts door roll coater and mist formula spraying technology to carry out surface coated and handles, and makes product finally reach stronger heatproof, reactance voltage and mechanical strength quality;
In the described high-temperature high-pressure Seterolithography operation, high temperature press polish operating temperature is 200-380 ℃, and is hot-forming with 100-350Kg/cm line pressure condition, utilizes Fanglun slurry cake that aramid short fiber is bonded together, and makes aramid fiber paper.
The mechanism of action of the present invention is: aramid fiber paper mainly is made up of aramid short fiber and aramid fiber fibrid, staple fiber length provides the mechanical performance of material, aramid fiber fibrid is gossamery membranoid substance, play the effect of bonding, after paper is shaped, by effects such as heating and pressurizing, make staple fiber to be sticked together the pulp fusing that fusing point is low than staple fiber.
With respect to prior art, the present invention has abandoned raw material in the existing other technologies and has disperseed dependence to auxiliary chemical raw material, existing scattering problem was solved in the meta-aramid fibers raw material fabrication stage, do not use any chemical assistant just can realize the even dispersion of paper making pulp; Do not use chemical assistant, not only eliminated the expensive expense of dispersant in the cost of material, more eliminated the problem of the sewage disposal burden increasing that build up of chemicals causes in the plain boiled water reuse process, contain dispersant molecule and influence durothermic problem but also solved one-tenth paper, paper properties especially electrical insulation properties such as dielectric loss factor improves greatly; The aramid fiber paper that the present invention produces can be realized better evenness, mechanical strength, heat resistance and dielectric properties, can be used for fields such as the higher electric insulation of requirement, Aero-Space, communications and transportation.
Four, description of drawings
Fig. 1: a kind of meta-position aramid fiber paper of the present invention and preparation method thereof main flow chart;
Fig. 2: the concrete implementing procedure figure of a kind of meta-position aramid fiber paper of the present invention and preparation method thereof.
Five, the specific embodiment
Provide specific embodiments of the present invention below in conjunction with accompanying drawing, further specify the technology of the present invention solution, but embodiments of the present invention are not limited to following specific embodiments.
Present embodiment meta-position aramid fiber paper preparation method adopts pure meta-aramid fibers to make meta-position aramid fiber paper, and step is referring to shown in preparation method's flow chart of Fig. 1, Fig. 2:
1, the meta-aramid staple fiber that adds 5-95% (percentage by weight) in water is made slurry after dispersing apparatus disperses, the meta-aramid fibre fibrid that adds 5-95% (percentage by weight) in the outside water is made slurry after dispersing apparatus disperses in addition, slurry after above-mentioned two kinds of dispersions mixes, and obtains mixed slurry;
The above-mentioned meta-aramid staple fiber short section fibre that continuous meta-aramid long fiber is cut into of serving as reasons, compare common aramid fiber short fiber, have the characteristics of easy dispersion, high-modulus, aramid short fiber is crisscross to be distributed in the page, play humidification, make paper have higher mechanical strength and impart tear; Aspect the staple fiber improvement in performance, main by improvement to spinning technique, adopt more reasonably spray silk, hot drawing-off and cut off technology and equipment, the aspect index such as fiber number, length, modulus of fiber is made moderate progress, produce the high-modulus aramid short fiber that relatively is fit to papermaking, have good dispersiveness and mechanical strength, solved the poly-problem of the wadding of meta-aramid staple fiber in approach system, for the raising of the manufacture paper with pulp evenness and the paper strength of aramid fiber paper provides basic assurance;
Above-mentioned meta-aramid fibre fibrid is the meta-aramid fibers that is similar to string paper pulp through the outer appearnce of special precipitating device processes, can become paper separately, gives the general character of page with paper, improves the insulating properties of page; Fibrid improvement in performance aspect, by research to the fibrid microscopic dimensions, the fibrid production equipment is transformed, change the odontoid of precipitating equipment, the lines of occlusion of tooth and tooth is processed near straight line, strengthens of the shearing of precipitating equipment, improved its shaped state raw material, produce the fibrid that beating degree and fibrous binding force all meet the papermaking requirement, for improve in the paper-making process wet web strength with become the paper dielectric properties that strong assurance is provided;
The treated slurry of making of meta-aramid staple fiber, process comprises following flow process:
1) pulper size degradation: after the finished product staple fiber is opened bag, drop in the hydrabrusher, add deionized water, dense size degradation in carrying out, size degradation concentration is 2-4%;
2) allotment slurry concentration: the slurries behind the size degradation are transported to the allotment stock tank with stock pump, add deionized water, the allotment slurry concentration is to 1-1.5%;
3) desander purifies: deployed slurry is transported to conical refiner with stock pump purifies, the impurity that proportion is bigger is removed;
The treated slurry of making of meta-aramid fibre fibrid, process comprises following flow process:
1) pulper size degradation: after the finished product fibrid is opened bag, drop in the hydrabrusher, add deionized water, carry out high dense size degradation, size degradation concentration is 5-8%;
2) unload kiln basin: the slurries behind the size degradation are transported to stock pump unload kiln basin, store capacity so that operation is used afterwards;
3) making beating is discongested: unload slurry in the kiln basin and be transported to the making beating equipment of discongesting with stock pump and handle, make fiber reach good wire-dividing broom purification and discongest effect;
4) allocate slurry concentration: the slurries after making beating is discongested are put in the allotment stock tank, add deionized water, and the allotment slurry concentration is to 1-1.5%;
5) desander purifies: deployed slurry is transported to conical refiner with stock pump purifies, the impurity that proportion is bigger is removed;
2, approach flow is shaped
Two kinds of slurry dilute with waters through mixing screen with pressurized screen, keep good slurry online; The preferred special-purpose tiltedly oblique net forming technique of net former of Top wire former operation; Under the situation that improves the speed of a motor vehicle, be between the 0.96-1.02 by the ratio of regulating slurry speed and network speed, progressively improve the poor in length and breadth of paper strength; This long fibered paper of aramid fiber paper of manufacturing paper with pulp, oblique net paper machine is a best equipment, the former of oblique net paper machine is relatively to be fit to manufacture paper with pulp the former of meta-position aramid fiber paper; Online concentration under relatively also definite different basis weights is at 0.01-0.05%;
3, squeezing, drying
1) squeezing process adopts two one press dewatering of blanket of two rollers;
2) drying process is a composite drying; Adopt contactless far-infrared dryer to carry out drying earlier, change hydrone and the relative position of meta-aramid fibers and the motion state of hydrone itself from microcosmic, reach predrying before contact oven dry, increase dry transition, the undesired production time that the bonding of minimizing meta-aramid fibers and drying cylinder causes, enhance productivity; Adopt traditional contact cylinder dried again; Drying process precoating nano-particle material SPT-915S adopts door roll coater and mist formula spraying technology to carry out surface coated and handles, and makes product finally reach stronger heatproof, reactance voltage and mechanical strength quality;
4, high-temperature high-pressure Seterolithography
In the high-temperature high-pressure Seterolithography operation, high temperature press polish operating temperature is 200-380 ℃, and is hot-forming with 100-350Kg/cm line pressure condition, utilizes Fanglun slurry cake that aramid short fiber is bonded together and makes aramid fiber paper.
With respect to prior art, embodiments of the present invention have been abandoned raw material in the existing other technologies and have been disperseed dependence to auxiliary chemical raw material, existing scattering problem was solved in the meta-aramid fibers raw material fabrication stage, do not use any chemical assistant just can realize the even dispersion of paper making pulp.Do not use chemical assistant, not only eliminated the expensive expense of dispersant in the cost of material, more eliminated the problem of the sewage disposal burden increasing that build up of chemicals causes in the plain boiled water reuse process, contain dispersant molecule and influence durothermic problem but also solved one-tenth paper, paper properties especially electrical insulation properties such as dielectric loss factor improves greatly; Embodiments of the present invention have been used the oblique net former and the high temperature press polish modular system that can reach good result, its high temperature press polish modular system is brought up to 200-380 ℃ from temperature conditions 100-350 ℃ of prior art, line pressure is brought up to 100-350kg/cm from 0-200kg/cm, paper properties improves greatly, the aramid fiber paper of producing can be realized better evenness, mechanical strength, heat resistance and dielectric properties, can be used for fields such as the higher electric insulation of requirement, Aero-Space, communications and transportation.
Claims (10)
1, a kind of meta-position aramid fiber paper preparation method is characterized in that adopting pure meta-aramid fibers to make meta-position aramid fiber paper, and preparation process is as follows:
(1), the meta-aramid staple fiber that adds 5-95% in water is by weight percentage made slurry after dispersing apparatus disperses, the meta-aramid fibre fibrid that adds 5-95% in water is by weight percentage made slurry after dispersing apparatus disperses, slurry after above-mentioned two kinds of dispersions mixes, and obtains mixed slurry;
(2), approach flow is shaped;
(3), squeezing, drying;
(4), high-temperature high-pressure Seterolithography.
2, according to the described a kind of meta-position aramid fiber paper preparation method of claim 1, it is characterized in that
The described meta-aramid staple fiber short section fibre that continuous meta-aramid long fiber is cut into of serving as reasons, adopt spray silk, hot draft process and equipment, produce the high-modulus aramid short fiber that is fit to papermaking, this fiber has good dispersiveness and mechanical strength, can solve the poly-problem of the wadding of meta-aramid staple fiber in approach system;
Described meta-aramid fibre fibrid is similar to the meta-aramid fibers of string paper pulp for the outer appearnce through the precipitating device processes, change the odontoid of precipitating equipment, the lines of occlusion of tooth and tooth is processed near straight line, strengthen of the shearing of precipitating equipment to raw material, improve its shaped state, produce the fibrid that beating degree and fibrous binding force all meet the papermaking requirement.
3, according to the described a kind of meta-position aramid fiber paper preparation method of claim 1, it is characterized in that
Described meta-aramid staple fiber and the percentage by weight of meta-aramid fibre fibrid in raw material can be determined according to the material field of using: when preparing the paper that insulation can be had relatively high expectations, if be used for all kinds of motors, transformer, when power supply is used insulating materials, the preferential percentage by weight of meta-aramid fibers is 40-60%; When preparation electromagnetic wave transparent material cellular material, select the meta-aramid fibers of content 60%-80% for use; When preparation structural material cellular material, fire proofing, select the meta-aramid fibers of 70%-90% for use; When the preparation diaphragm of loudspeaker, select the meta-aramid fibers of 60%-90% for use.
4, according to the described a kind of meta-position aramid fiber paper preparation method of claim 1, it is characterized in that the treated slurry of making of described meta-aramid staple fiber, process comprises following flow process:
1) pulper size degradation: after the finished product staple fiber is opened bag, drop in the hydrabrusher, add deionized water, dense size degradation in carrying out, size degradation concentration is 2-4%;
2) allotment slurry concentration: the slurries behind the size degradation are transported to the allotment stock tank with stock pump, add deionized water, the allotment slurry concentration is to 1-1.5%;
3) desander purifies: deployed slurry is transported to conical refiner with stock pump purifies, the impurity that proportion is bigger is removed.
5, according to the described a kind of meta-position aramid fiber paper preparation method of claim 1, it is characterized in that the treated slurry of making of described meta-aramid fibre fibrid, process comprises following flow process:
1) pulper size degradation: after the finished product fibrid is opened bag, drop in the hydrabrusher, add deionized water, carry out high dense size degradation, size degradation concentration is 5-8%;
2) unload kiln basin: the slurries behind the size degradation are transported to stock pump unload kiln basin, store capacity so that operation is used afterwards;
3) making beating is discongested: unload slurry in the kiln basin and be transported to the making beating equipment of discongesting with stock pump and handle, make fiber reach good wire-dividing broom purification and discongest effect;
4) allocate slurry concentration: the slurries after making beating is discongested are put in the allotment stock tank, add deionized water, and the allotment slurry concentration is to 1-1.5%;
5) desander purifies: deployed slurry is transported to conical refiner with stock pump purifies, the impurity that proportion is bigger is removed.
6,, it is characterized in that described approach flow forming process is that two kinds of slurries mix the back dilution, through the good slurry of pressurized screen screening Top wire former according to the described a kind of meta-position aramid fiber paper preparation method of claim 1; The preferred special-purpose tiltedly oblique net forming technique of net former.
7, according to the described a kind of meta-position aramid fiber paper preparation method of claim 6, it is characterized in that the oblique net forming technique of described oblique net former, under the situation that improves the speed of a motor vehicle, the ratio of regulating slurry speed and network speed is between the 0.96-1.02, and the online concentration under the different basis weights is at 0.01-0.05%.
8,, it is characterized in that described squeezing, drying process are as follows according to the described a kind of meta-position aramid fiber paper preparation method of claim 1:
1) squeezing: squeezing process adopts two one press dewatering of blanket of two rollers;
2) drying: described drying process is a composite drying; At first adopt contactless far-infrared dryer to carry out drying, adopt traditional contact cylinder dried then; Drying process precoating nano-particle material SPT-915S adopts door roll coater and mist formula spraying technology to carry out surface coated and handles.
9, according to the described a kind of meta-position aramid fiber paper preparation method of claim 1, it is characterized in that in the described high-temperature high-pressure Seterolithography operation, high temperature press polish operating temperature is 200-380 ℃, hot-forming with 100-350Kg/cm line pressure condition, utilize Fanglun slurry cake that aramid short fiber is bonded together, make aramid fiber paper.
10, a kind of meta-position aramid fiber paper is characterized in that it being the aramid fiber paper that makes according to arbitrary described a kind of meta-position aramid fiber paper preparation method among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610043659 CN1834342A (en) | 2006-04-13 | 2006-04-13 | Meta-aramid paper and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610043659 CN1834342A (en) | 2006-04-13 | 2006-04-13 | Meta-aramid paper and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1834342A true CN1834342A (en) | 2006-09-20 |
Family
ID=37002233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610043659 Pending CN1834342A (en) | 2006-04-13 | 2006-04-13 | Meta-aramid paper and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1834342A (en) |
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100567633C (en) * | 2006-09-30 | 2009-12-09 | 烟台氨纶集团有限公司 | Aramid paper taking para-aramid chopped fibers as raw materials and preparation method thereof |
| CN101792983A (en) * | 2010-03-17 | 2010-08-04 | 山东齐峰特种纸业股份有限公司 | Aramid fiber paper for aerospace and manufacturing method thereof |
| CN101792979A (en) * | 2010-03-17 | 2010-08-04 | 山东齐峰特种纸业股份有限公司 | Aramid fiber paper pretreatment method for aerospace |
| CN102261009A (en) * | 2011-07-13 | 2011-11-30 | 钟洲 | Preparation method of aramid insulating paper |
| CN102277772A (en) * | 2011-08-09 | 2011-12-14 | 圣欧（苏州）安全防护材料有限公司 | Method for calendaring aramid fiber insulation paper |
| CN102352576A (en) * | 2011-09-28 | 2012-02-15 | 陕西科技大学 | Preparation method for polyimide fiber paper |
| CN101775757B (en) * | 2009-12-31 | 2012-05-30 | 烟台民士达特种纸业股份有限公司 | Preparation method of meta-aramid paper with different smoothness on two sides |
| CN101748646B (en) * | 2009-12-31 | 2012-05-30 | 烟台民士达特种纸业股份有限公司 | Sizing agent for preparing meta-aramid paper, production method, meta-aramid paper prepared from sizing agent and production method |
| CN103046427A (en) * | 2012-12-20 | 2013-04-17 | 华南理工大学 | Method for preparing aromatic polyamide fiber paper base material by electrospinning technology |
| CN103451989A (en) * | 2013-09-18 | 2013-12-18 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN103568415A (en) * | 2013-11-06 | 2014-02-12 | 嘉兴比诺克特种绝缘材料有限公司 | Production method of composite aramid fiber electrical insulation non-woven material |
| CN104343041A (en) * | 2014-10-15 | 2015-02-11 | 中国海诚工程科技股份有限公司 | Preparation method of meta-aramid paper |
| CN104818654A (en) * | 2015-04-01 | 2015-08-05 | 圣欧芳纶（淮安）有限公司 | m-aramid fiber-based conductive paper and conductive belt and preparation method thereof |
| CN105220262A (en) * | 2015-08-24 | 2016-01-06 | 江苏先诺新材料科技有限公司 | A kind of polyimides (PI) pulp and preparation method thereof |
| CN106192601A (en) * | 2016-08-26 | 2016-12-07 | 超美斯新材料股份有限公司 | High intensity aramid paper and preparation method thereof |
| CN106245411A (en) * | 2016-08-30 | 2016-12-21 | 烟台民士达特种纸业股份有限公司 | A kind of production method of meta-aramid fibers paper base material |
| CN106283836A (en) * | 2016-08-30 | 2017-01-04 | 烟台民士达特种纸业股份有限公司 | A kind of preparation method of high density aramid fiber insulation hardboard |
| CN106758484A (en) * | 2015-11-24 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | A kind of preparation method of aramid fiber cardboard |
| CN107090734A (en) * | 2017-05-30 | 2017-08-25 | 李晓旭 | A kind of preparation technology of the chopped paper of aramid fiber |
| CN108285540A (en) * | 2018-02-11 | 2018-07-17 | 陕西科技大学 | A kind of preparation method of aramid nano-fiber water-dispersed and aramid fiber nanometer paper |
| CN108744297A (en) * | 2018-07-06 | 2018-11-06 | 江西克莱威纳米碳材料有限公司 | A kind of far infrared paper and preparation method thereof and a kind of aramid fiber far-infrared physiotherapy electric heating device |
| CN110154464A (en) * | 2019-06-14 | 2019-08-23 | 赣州龙邦材料科技有限公司 | Aramid fiber paper base flexibility coat copper plate and its manufacturing method |
| CN110331616A (en) * | 2013-09-04 | 2019-10-15 | 杜邦帝人先进纸（日本）有限公司 | Conductive aramid paper and its manufacturing method |
| CN111021150A (en) * | 2019-12-17 | 2020-04-17 | 株洲时代华先材料科技有限公司 | High-insulation-performance meta-aramid thick paper and preparation method thereof |
| CN111235944A (en) * | 2020-02-17 | 2020-06-05 | 陕西科技大学 | Aramid nanofiber coated aramid paper and preparation method thereof |
| CN111778764A (en) * | 2020-06-28 | 2020-10-16 | 上海奇鹏新材料科技中心 | Aviation-grade aramid fiber honeycomb paper and preparation method thereof |
| CN112726264A (en) * | 2020-12-25 | 2021-04-30 | 烟台民士达特种纸业股份有限公司 | Polyimide paper base material for wave-transparent honeycomb and preparation method thereof |
| CN114575176A (en) * | 2022-04-07 | 2022-06-03 | 赣州龙邦材料科技有限公司 | Method for manufacturing low-cost pure meta-aramid insulating composite paper |
| CN115125765A (en) * | 2022-06-14 | 2022-09-30 | 株洲时代华先材料科技有限公司 | Preparation method of low-air permeability and low-quantitative meta-aramid honeycomb paper |
| CN115216990A (en) * | 2022-06-10 | 2022-10-21 | 超美斯新材料股份有限公司 | Method for improving flatness of aramid paper |
| CN115787123A (en) * | 2022-09-16 | 2023-03-14 | 株洲时代华先材料科技有限公司 | Meta-aramid fibrid with centralized length distribution and high water retention value and preparation method thereof |
-
2006
- 2006-04-13 CN CN 200610043659 patent/CN1834342A/en active Pending
Cited By (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100567633C (en) * | 2006-09-30 | 2009-12-09 | 烟台氨纶集团有限公司 | Aramid paper taking para-aramid chopped fibers as raw materials and preparation method thereof |
| CN101748646B (en) * | 2009-12-31 | 2012-05-30 | 烟台民士达特种纸业股份有限公司 | Sizing agent for preparing meta-aramid paper, production method, meta-aramid paper prepared from sizing agent and production method |
| CN101775757B (en) * | 2009-12-31 | 2012-05-30 | 烟台民士达特种纸业股份有限公司 | Preparation method of meta-aramid paper with different smoothness on two sides |
| CN101792983A (en) * | 2010-03-17 | 2010-08-04 | 山东齐峰特种纸业股份有限公司 | Aramid fiber paper for aerospace and manufacturing method thereof |
| CN101792979A (en) * | 2010-03-17 | 2010-08-04 | 山东齐峰特种纸业股份有限公司 | Aramid fiber paper pretreatment method for aerospace |
| CN101792979B (en) * | 2010-03-17 | 2012-07-25 | 山东齐峰特种纸业股份有限公司 | Aramid fiber paper pretreatment method for aerospace |
| CN102261009A (en) * | 2011-07-13 | 2011-11-30 | 钟洲 | Preparation method of aramid insulating paper |
| CN102277772A (en) * | 2011-08-09 | 2011-12-14 | 圣欧（苏州）安全防护材料有限公司 | Method for calendaring aramid fiber insulation paper |
| CN102277772B (en) * | 2011-08-09 | 2013-06-19 | 圣欧芳纶（江苏）股份有限公司 | Method for calendaring aramid fiber insulation paper |
| CN102352576A (en) * | 2011-09-28 | 2012-02-15 | 陕西科技大学 | Preparation method for polyimide fiber paper |
| CN103046427A (en) * | 2012-12-20 | 2013-04-17 | 华南理工大学 | Method for preparing aromatic polyamide fiber paper base material by electrospinning technology |
| CN110331616A (en) * | 2013-09-04 | 2019-10-15 | 杜邦帝人先进纸（日本）有限公司 | Conductive aramid paper and its manufacturing method |
| CN103451989A (en) * | 2013-09-18 | 2013-12-18 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN103451989B (en) * | 2013-09-18 | 2015-07-01 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN103568415A (en) * | 2013-11-06 | 2014-02-12 | 嘉兴比诺克特种绝缘材料有限公司 | Production method of composite aramid fiber electrical insulation non-woven material |
| CN104343041A (en) * | 2014-10-15 | 2015-02-11 | 中国海诚工程科技股份有限公司 | Preparation method of meta-aramid paper |
| CN104343041B (en) * | 2014-10-15 | 2016-09-14 | 中国海诚工程科技股份有限公司 | A kind of preparation method of meta-position aramid fiber paper |
| CN104818654A (en) * | 2015-04-01 | 2015-08-05 | 圣欧芳纶（淮安）有限公司 | m-aramid fiber-based conductive paper and conductive belt and preparation method thereof |
| CN105220262B (en) * | 2015-08-24 | 2019-11-08 | 江苏先诺新材料科技有限公司 | A kind of polyimides (PI) pulp and preparation method thereof |
| CN105220262A (en) * | 2015-08-24 | 2016-01-06 | 江苏先诺新材料科技有限公司 | A kind of polyimides (PI) pulp and preparation method thereof |
| CN106758484A (en) * | 2015-11-24 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | A kind of preparation method of aramid fiber cardboard |
| CN106758484B (en) * | 2015-11-24 | 2019-08-09 | 株洲时代新材料科技股份有限公司 | A kind of preparation method of aramid fiber cardboard |
| CN106192601A (en) * | 2016-08-26 | 2016-12-07 | 超美斯新材料股份有限公司 | High intensity aramid paper and preparation method thereof |
| CN106192601B (en) * | 2016-08-26 | 2018-07-13 | 超美斯新材料股份有限公司 | High intensity aramid paper and preparation method thereof |
| CN106283836A (en) * | 2016-08-30 | 2017-01-04 | 烟台民士达特种纸业股份有限公司 | A kind of preparation method of high density aramid fiber insulation hardboard |
| CN106245411A (en) * | 2016-08-30 | 2016-12-21 | 烟台民士达特种纸业股份有限公司 | A kind of production method of meta-aramid fibers paper base material |
| CN107090734A (en) * | 2017-05-30 | 2017-08-25 | 李晓旭 | A kind of preparation technology of the chopped paper of aramid fiber |
| CN107090734B (en) * | 2017-05-30 | 2019-08-16 | 南通新源特种纤维有限公司 | A kind of preparation process of the chopped paper of aramid fiber |
| CN108285540A (en) * | 2018-02-11 | 2018-07-17 | 陕西科技大学 | A kind of preparation method of aramid nano-fiber water-dispersed and aramid fiber nanometer paper |
| CN108285540B (en) * | 2018-02-11 | 2020-09-29 | 陕西科技大学 | Preparation method of water-dispersible aramid nanofiber and aramid nano paper |
| CN108744297A (en) * | 2018-07-06 | 2018-11-06 | 江西克莱威纳米碳材料有限公司 | A kind of far infrared paper and preparation method thereof and a kind of aramid fiber far-infrared physiotherapy electric heating device |
| CN110154464A (en) * | 2019-06-14 | 2019-08-23 | 赣州龙邦材料科技有限公司 | Aramid fiber paper base flexibility coat copper plate and its manufacturing method |
| CN111021150A (en) * | 2019-12-17 | 2020-04-17 | 株洲时代华先材料科技有限公司 | High-insulation-performance meta-aramid thick paper and preparation method thereof |
| CN111021150B (en) * | 2019-12-17 | 2022-01-25 | 株洲时代华先材料科技有限公司 | High-insulation-performance meta-aramid thick paper and preparation method thereof |
| CN111235944A (en) * | 2020-02-17 | 2020-06-05 | 陕西科技大学 | Aramid nanofiber coated aramid paper and preparation method thereof |
| CN111778764A (en) * | 2020-06-28 | 2020-10-16 | 上海奇鹏新材料科技中心 | Aviation-grade aramid fiber honeycomb paper and preparation method thereof |
| CN112726264A (en) * | 2020-12-25 | 2021-04-30 | 烟台民士达特种纸业股份有限公司 | Polyimide paper base material for wave-transparent honeycomb and preparation method thereof |
| CN114575176A (en) * | 2022-04-07 | 2022-06-03 | 赣州龙邦材料科技有限公司 | Method for manufacturing low-cost pure meta-aramid insulating composite paper |
| CN115216990A (en) * | 2022-06-10 | 2022-10-21 | 超美斯新材料股份有限公司 | Method for improving flatness of aramid paper |
| CN115125765A (en) * | 2022-06-14 | 2022-09-30 | 株洲时代华先材料科技有限公司 | Preparation method of low-air permeability and low-quantitative meta-aramid honeycomb paper |
| CN115787123A (en) * | 2022-09-16 | 2023-03-14 | 株洲时代华先材料科技有限公司 | Meta-aramid fibrid with centralized length distribution and high water retention value and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1834342A (en) | Meta-aramid paper and preparation method thereof | |
| CN100567633C (en) | Aramid paper taking para-aramid chopped fibers as raw materials and preparation method thereof | |
| CN110528314B (en) | Composite sheet containing melt-blown polyphenylene sulfide superfine fibers and preparation method and application thereof | |
| CN106245411B (en) | A kind of production method of meta-aramid fibers paper base material | |
| DK2492392T3 (en) | A process for the preparation of aramidpapir and aramidpapir obtained thereby | |
| CN101144253B (en) | High-temperature resistant insulation continuous sheet and manufacturing method thereof | |
| CN1974925A (en) | Synthetic fiber paper containing polyphenyl sulfide and aromid fiber and producing method thereof | |
| CN103572640A (en) | Method for preparing para aramid paper from para aramid fibrid | |
| CN100554581C (en) | Multiple proportional layered compound polyfiber amide paper of manufacturing paper with pulp and preparation method thereof | |
| CN112609493A (en) | Composite papermaking nano reinforced aramid fiber paper and preparation method thereof | |
| CN1078645C (en) | Special synthetic fiber paper and its production | |
| CN1942629A (en) | Aramid paper blend | |
| CN102517976A (en) | Preparation method of pure p-aramid paper | |
| CN1710196A (en) | Full-para-polyfiber amide paper, and its preparing method and use | |
| CN111485446A (en) | Enhanced aramid paper and preparation method thereof | |
| CN1683712A (en) | PBO fiber paper base material and its preparing method and use | |
| CN1710195A (en) | Paper-base composite material for preparing honeycomb briquette core material and its preparing method | |
| CN103485234A (en) | Preparation method of mixed fiber system aramid paper | |
| CN111546722A (en) | Reinforced high-thermal-conductivity mica tape and preparation method thereof | |
| KR101430556B1 (en) | Fabrication method of thermoplastic nanofiber composites using cellulose nanofibers and thermoplastic synthetic polymeric fibers | |
| CN111549567A (en) | Modified preparation method of high-thermal-conductivity mica paper | |
| US20180304555A1 (en) | Porous single resin fiber composite material and method for manufacturing porous single resin fiber composite material | |
| CN1300413C (en) | Amide aramid fiber paper, preparation method and application | |
| JP2013511629A (en) | Collapsible core based on carbon fiber paper and articles made therefrom | |
| CN1948615A (en) | Synthetic fiber paper containing basalt fiber and chemical fiber and its preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YANTAI SPANDEX GROUP LTD. Free format text: FORMER OWNER: YANTAI POLYURETHANE FIBRE CO., LTD. Effective date: 20070323 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070323 Address after: 264006, Yantai Shandong economic and Technological Development Zone Emei Road No. 1, Yantai spandex Limited by Share Ltd aramid Division Applicant after: Yantai Spandex Group Co., Ltd. Address before: 264006, Yantai Shandong economic and Technological Development Zone Emei Road No. 1, Yantai spandex Limited by Share Ltd aramid Division Applicant before: Yantai Spandex Co., Ltd. |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |