CN109183275A - A kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper - Google Patents
A kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper Download PDFInfo
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- CN109183275A CN109183275A CN201810992964.7A CN201810992964A CN109183275A CN 109183275 A CN109183275 A CN 109183275A CN 201810992964 A CN201810992964 A CN 201810992964A CN 109183275 A CN109183275 A CN 109183275A
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- Prior art keywords
- graphene oxide
- formaldehyde resin
- resin modified
- phenol
- net type
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper, its material composition is made of 1%~3% graphene oxide, 80%~90% phenol-formaldehyde resin modified, 3%~5% inorganic salts, 5%~10% pH adjusting agent and 0.5%~1% dispersing agent, composite fibre preparation is carried out using electrostatic spinning mode, proportioned raw material is sufficiently mixed to stir evenly and obtains graphene oxide phenol-formaldehyde resin modified mixed solvent system, is then placed on progress electrostatic net in strong electrical field.Nanoscale spider net type conductive fiber paper can be produced in the present invention, have preparation process simple, filter effect is good, good intensity, toughness and electric conductivity, further increases its filterability using electrostatic adsorption, expands the application range of fiber filter paper.
Description
Technical field
The invention patent relates to filter paper fields, and in particular to a kind of graphene oxide phenol-formaldehyde resin modified spider net type is conductive
Filter paper.
Background technique
Cobweb has very strong effect in the Nature, it does not just have good viscosity, and some cobwebs have
The intensity of very high intensity, some spider silks is also eager to excel than the steel wire of equivalent weight, and elasticity is also higher, has in many fields imitative
The application of raw cobweb.Electrostatic net spining technology has had the research in some patent reports and laboratory.In electrostatic spinning work
During skill, so that liquid surface is formed an electric field first, when electric field force acts on liquid surface, band will be generated in liquid surface
The liquid jet of charge.Liquid jet can be attracted by the substance with opposite charges and with suitable potential and is stretched.?
During liquid jet is stretched, fiber will be generated by drying and curing.Pass through the objects such as the cooling of liquid, the evaporation of solvent
Reason solidifies or can make the liquid jet being stretched solidification and drying by chemosetting.The fiber of generation is suitable by one
Reception device place and with reversed charge is collected, and can when needed be removed fiber from collection device, or
It may be directly applied to the target formation zone with reversed charge.
Graphene oxide is a kind of new carbon haveing excellent performance, specific surface area with higher and surface official abundant
It can group.Graphene oxide composite material, which includes polymerization species composite material, and inorganic species composite material is even more has widely
Application field, therefore the surface of graphene oxide is modified as another research emphasis.
Filter paper is a kind of scientific apparatus, it can effective filter medium, filter paper is widely used for each neck
Domain.Kinds of fibers according to composition filter paper is different, and performance, the purposes of filter paper are also different, have for the common of general occasion
Filter paper also has ultra-clean polypropylene filter paper etc. for the glass fiber filter paper under high temperature.
Current filtering paper product is existing very much, and its application range leaf is very extensive, but in the side of high efficiency filter performance
Face also needs further to study, and even needs the filter paper of conductive energy in certain places, can also utilize its electrostatic
Suction-operated further increases its filterability, therefore with regard to how to produce the mistake with high efficiency filter performance and conductive energy
Filter paper product is a current topic being badly in need of solution and studying.
The Chinese patent application of Patent No. CN106638154A discloses a kind of low bulk density refractory glass fibre mistake
Filter paper, it is characterised in that the low bulk density refractory glass fibre filter paper is 0.3~2 μm by 25~40 parts of average diameters
The hollow glass fibre that two-component glass fibre and 60~75 parts of average diameters are 4~8 μm is uniformly distributed composition, bulk density 1.2
~1.8g/cm3, the two-component glass fibre is formed after two furnaces mixed respectively by the glass raw material of two kinds of components
Liquid is closed, then is formed through thermal-flame blowing wire drawing.The invention also discloses a kind of low bulk density refractory glass fibre filter paper
Preparation method, it is characterised in that the following steps are included: (1) raw material preparation；(2) disperse slurrying；(3) wet forming；(4) suction is de-
Water；(5) it is dried.
A kind of electrostatic spraying nanometer spider web waterproof humidity-permeant film of the Chinese patent application of Patent No. CN104562444A and
Preparation method assists electrostatic spraying lotion preparation nanometer spider web into the net anti-more particularly to a kind of using back draught blowing
The processing technology of water moisture permeable membrane, specifically: during electrostatic spraying, with back draught in the spray for being parallel to polymer emulsion drop
Direction is penetrated to be blown drop, promote drop in the electric field flight when stress deformation form liquid film, and then mutually separate and to form tool
There is the two-dimension netted material of stable hexagonal meshes structure.The characteristics of this nanometer of spider web waterproof humidity-permeant film is that spider web area coverage is
100%, structural intergrity is good, average pore size is 10~200nm, porosity of=80%.The waterproof humidity-permeant film water pressure resistance >=
120kPa, moisture-inhibiting flux >=15000g/m2/d
A kind of reusable nanometer spider web air-filtering membrane of the Chinese patent application of Patent No. CN107362701A
And preparation method thereof, the multilevel structure nanometer arachnoid being mutually compounded to form for the ultra-fine arachnoid of two dimension and 1-dimention nano fiber
Material；The preparation method comprises the following steps: dissolving the polymer in the mixed solvent, bivalent inorganic salt is added, stirring forms homogeneous spinning solution；
Carry out electrostatic net with resulting spinning solution, during electrostatic spraying with lateral airflow to polymer jet stream carry out blowing and
Relative humidity gradient field is formed in spinning section, promotes the quick of the formation of electrification droplet, the slenderizing of jet stream and solvent
It volatilizees and mutually separates；After well-dried, reusable nanometer spider web air-filtering membrane is obtained.The invention preparation process letter
Single, the structure controllability of filter membrane is strong, and spider web coverage rate is 100%, to filter efficiency >=99% of 2.5 μm of particulate matters, resistance
Pressure drop≤120Pa, dust containing capacity >=40g/m2, residual dust containing capacity≤5g/m2 after deashing have good reusable property.
A kind of nanometer of spider web/beading fiber composite air filtration of the Chinese patent application of Patent No. CN106984201A
Film and preparation method thereof, filter membrane include that nanometer spider web receiving layer, beading fibrous layer and the nanometer spider web being arranged from below to up cover
Cap rock；Preparation method are as follows: contain the nanometer of two-dimension netted tunica fibrosa and 1-dimention nano fiber by the preparation of electrostatic network technology
Arachnoid, the aluminium foil surface for being deposited on reception roller obtain a nanometer spider web receiving layer；It is prepared by electrostatic spinning technique by continuous
Beading fiber composed by bead of the diameter up to micro-meter scale of nanofiber and distribution on it, is deposited on a nanometer spider web and connects
It receives layer surface and obtains beading fibrous layer；Nanometer arachnoid is prepared by electrostatic network technology and is deposited on beading fiber layer surface,
Obtain a nanometer spider web coating；Sufficiently a nanometer spider web/beading fiber composite air-filtering membrane is obtained after drying.
Such as above-mentioned several patents, the relevant technical products in this field are disclosed, but how more high standard high efficiency is high
It is that this field is badly in need of solving that quality, which obtains a kind of spider net type conducting filtration paper with high efficiency filter performance and electric conductivity,
Technical problem.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of graphene oxide phenol-formaldehyde resin modified spider webs
Formula conducting filtration paper.
In order to solve the above-mentioned technical problem, used technical solution is: graphene oxide phenol-formaldehyde resin modified spider net type
The material composition of conducting filtration paper be by 1%~3% graphene oxide, 80%~90% phenol-formaldehyde resin modified, 3%~
5% inorganic salts, 5%~10% pH adjusting agent and 0.5%~1% dispersing agent composition, carried out using electrostatic spinning mode
Proportioned raw material is sufficiently mixed stirring certain time by composite fibre preparation, obtains the good oxygen of uniformity polymolecularity
Then graphite alkene/phenol-formaldehyde resin modified mixed solvent system is put graphene oxide/phenol-formaldehyde resin modified mixed solvent system
Electrostatic net is carried out in strong electrical field, under electric field action, the drop at syringe needle is guided by air-flow, makes its stress stretcher strain
Electrification droplet is split into, extend from conical tip and then is mutually separated, and forms two-dimension netted knot on the roller for be covered with aluminium foil
The nano-scale fiber nethike embrane of structure, together through composite deposition by the nanofiber grade nethike embrane of several layers of formation, after placing a period of time
It is dried to obtain spider net type conducting filtration paper through drier.
Further, the graphene oxide is the graphene oxide thin slice of single atomic layer, electrostatic network fiber
Diameter is between 5nm~100nm.
Further, the electrostatic network process controls guide pin tip liquid using the air-flow of different directions and wind speed
The direction of drop, guidance electrostatic net form specific two-dimensional network structure on the roller for be covered with aluminium foil.
Further, the pH adjusting agent is polyacrylic acid, and dispersing agent is organic dispersing agent polyacrylamide or fat
One of acid polyethylene glycol ester, inorganic salts are in calcium chloride, potassium chloride, sodium chloride, sodium carbonate, sodium bicarbonate and potassium carbonate
Any one or a few mixture.
Further, the spinning voltage in the electrostatic network process in electrostatic network process is normal voltage, is received
Distance is 10~25cm, and spinning speed is 0.1~2mL/h, and drum rotation speed is 20~100r/min, the temperature and time of drier
Meet graphene oxide/phenol-formaldehyde resin modified spider net type conducting filtration paper and reaches defined standard moisture content.
Advantage for present invention: (1) the final conducting filtration paper that addition graphene oxide obtains has excellent
Electric conductivity can use its electrostatic adsorption and further increase its filterability, and solving general fiber filter paper can not yet
With the problem on conductive field.(2) addition graphene oxide enhances the intensity and toughness of fiber.(3) electrostatic net is used
Method prepares graphene oxide/phenol-formaldehyde resin modified spider net type conducting filtration paper, and technological operation is simple, high production efficiency.(4)
The spider net type filter paper arrived has efficient strainability, and good obdurability (5) spider web area coverage is big, and porosity is higher than
85%, structural intergrity is good.
Specific embodiment
Combined with specific embodiments below, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalences of the invention
It is as defined in the appended claims that the modification of form falls within the application.
Embodiment 1
A kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper, wherein graphene oxide phenol-formaldehyde resin modified
The material composition of spider net type conducting filtration paper be by 2% graphene oxide, 88% phenol-formaldehyde resin modified, 4% inorganic salts,
5.5% pH adjusting agent and 0.5% dispersing agent composition, composite fibre preparation is carried out using electrostatic spinning mode, will be matched
Raw material be sufficiently mixed stirring certain time, obtain the good graphene oxide/phenol-formaldehyde resin modified of uniformity polymolecularity
Then graphene oxide/phenol-formaldehyde resin modified mixed solvent system is placed in strong electrical field and carries out electrostatic by mixed solvent system
Net guides the drop at syringe needle by air-flow, its stress stretcher strain is made to split into electrification droplet under electric field action, from
Conical tip extends and then mutually separates, and the nano-scale fiber nethike embrane of two-dimensional network structure is formed on the roller for be covered with aluminium foil,
The nanofiber grade nethike embrane that several layers are formed together, is dried to obtain after placing a period of time through composite deposition through drier
Spider net type conducting filtration paper.
Further, the graphene oxide is the graphene oxide thin slice of single atomic layer, electrostatic network fiber
Diameter is between 5nm~100nm.
Further, the electrostatic network process controls guide pin tip liquid using the air-flow of different directions and wind speed
The direction of drop, guidance electrostatic net form specific two-dimensional network structure on the roller for be covered with aluminium foil.
Further, the pH adjusting agent is polyacrylic acid, and dispersing agent is organic dispersing agent fatty acid polyethylene glycol ester,
Inorganic salts are the mixture of calcium chloride and potassium carbonate.
Further, the spinning voltage in the electrostatic network process in electrostatic network process is normal voltage, is received
Distance is 20cm, and the temperature and time of spinning speed 1mL/h, drum rotation speed 40r/min, drier meet graphite oxide
Alkene/phenol-formaldehyde resin modified spider net type conducting filtration paper reaches defined standard moisture content.
In the present embodiment, spider web coverage rate is 100%, porosity 90%, for the particulate matter less than 1 μm, filtering effect
Rate reaches 99% or more.
Embodiment 2
A kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper, wherein graphene oxide phenol-formaldehyde resin modified
The material composition of spider net type conducting filtration paper be by 1.5% graphene oxide, 90% phenol-formaldehyde resin modified, 2.7% nothing
Machine salt, 5% pH adjusting agent and 0.8% dispersing agent composition, carry out composite fibre preparation using electrostatic spinning mode, will match
Good raw material is sufficiently mixed stirring certain time, obtains the good graphene oxide/modified phenolic resin of uniformity polymolecularity
Then graphene oxide/phenol-formaldehyde resin modified mixed solvent system is placed in strong electrical field and carries out electrostatic by rouge mixed solvent system
Net is sprayed, under electric field action, the drop at syringe needle is guided by air-flow, its stress stretcher strain is made to split into electrification droplet,
Extend from conical tip and then mutually separate, and forms the nano-scale fiber net of two-dimensional network structure on the roller for be covered with aluminium foil
Film, the nanofiber grade nethike embrane that several layers are formed together, are dried after placing a period of time through drier through composite deposition
Obtain spider net type conducting filtration paper.
Further, the graphene oxide is the graphene oxide thin slice of single atomic layer, electrostatic network fiber
Diameter is between 5nm~100nm.
Further, the electrostatic network process controls guide pin tip liquid using the air-flow of different directions and wind speed
The direction of drop, guidance electrostatic net form specific two-dimensional network structure on the roller for be covered with aluminium foil.
Further, the pH adjusting agent is polyacrylic acid, and dispersing agent is organic dispersing agent polyacrylamide, inorganic salts
For calcium chloride.
Further, the spinning voltage in the electrostatic network process in electrostatic network process is normal voltage, is received
Distance is 30cm, and the temperature and time of spinning speed 0.8mL/h, drum rotation speed 50r/min, drier meet graphite oxide
Alkene/phenol-formaldehyde resin modified spider net type conducting filtration paper reaches defined standard moisture content.
In the present embodiment, spider web coverage rate is 100%, porosity 88%, for the particulate matter less than 1 μm, filtering effect
Rate reaches 99% or more.
It above are only two specific embodiments of the invention, but the design concept of the present invention is not limited to this, all benefits
It is made a non-material change to the present invention with this design, should belong to the behavior for invading the scope of protection of the invention.But it is all
Without departing from the content of technical solution of the present invention, according to the technical essence of the invention any type of letter to the above embodiments
Single modification, equivalent variations and remodeling, still fall within the protection scope of technical solution of the present invention.
Claims (5)
1. a kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper, it is characterised in that the graphene oxide/
The material composition of phenol-formaldehyde resin modified spider net type conducting filtration paper be by 1%~3% graphene oxide, 80%~90% change
Property phenolic resin, 3%~5% inorganic salts, 5%~10% pH adjusting agent and 0.5%~1% dispersing agent composition, use
Electrostatic spinning mode carries out composite fibre preparation, and proportioned raw material is sufficiently mixed stirring certain time, it is high to obtain the uniformity
The graphene oxide of favorable dispersibility/phenol-formaldehyde resin modified mixed solvent system, then by graphene oxide/modified phenolic resin
Rouge mixed solvent system is placed on progress electrostatic net in strong electrical field, under electric field action, guides the drop at syringe needle by air-flow,
So that its stress stretcher strain is split into electrification droplet, extend from conical tip and then mutually separate, and in the roller for being covered with aluminium foil
The upper nano-scale fiber nethike embrane for forming two-dimensional network structure, the nanofiber grade nethike embrane that several layers are formed is through composite deposition one
It rises, is dried to obtain spider net type conducting filtration paper through drier after placing a period of time.
2. a kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper according to claim 1, feature exist
In the graphene oxide thin slice that the graphene oxide is single atomic layer, the diameter of electrostatic network fiber is in 5nm~100nm
Between.
3. a kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper according to claim 1, feature exist
The direction of guide pin tip drop is controlled using the air-flow of different directions and wind speed in the electrostatic network process, is guided quiet
EFI net forms specific two-dimensional network structure on the roller for be covered with aluminium foil.
4. a kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper according to claim 1, feature exist
It is polyacrylic acid in the pH adjusting agent, dispersing agent is in organic dispersing agent polyacrylamide or fatty acid polyethylene glycol ester
One kind, inorganic salts are any one or a few in calcium chloride, potassium chloride, sodium chloride, sodium carbonate, sodium bicarbonate and potassium carbonate
Mixture.
5. a kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper according to claim 1, feature exist
Spinning voltage in the electrostatic network process in electrostatic network process is normal voltage, and receiving distance is 10~25cm,
Spinning speed is 0.1~2mL/h, and drum rotation speed is 20~100r/min, and the temperature and time of drier meets graphene oxide
Phenol-formaldehyde resin modified (UM-PF) spider net type conducting filtration paper reaches defined standard moisture content.
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| CN201810992964.7A CN109183275A (en) | 2018-08-24 | 2018-08-24 | A kind of graphene oxide phenol-formaldehyde resin modified spider net type conducting filtration paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110643115A (en) * | 2019-10-21 | 2020-01-03 | 中国科学院山西煤炭化学研究所 | Preparation method of phenolic resin raw material for improving strength of phenolic resin fiber precursor |
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| CN106984201A (en) * | 2017-05-08 | 2017-07-28 | 河北科技大学 | Nanometer spider web/beading fiber composite air-filtering membrane and preparation method thereof |
| CN107362701A (en) * | 2017-08-25 | 2017-11-21 | 河北科技大学 | One kind is repeatable to utilize nanometer spider web air-filtering membrane and preparation method thereof |
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| JP2008019182A (en) * | 2006-07-11 | 2008-01-31 | Unitika Ltd | Insect-repellent/antimicrobial sheet |
| CN103215693A (en) * | 2013-02-01 | 2013-07-24 | 清华大学 | Graphene-oxide-modified phenolic-resin-based ultrafine porous carbon fiber and preparation method thereof |
| CN106120027A (en) * | 2016-06-30 | 2016-11-16 | 天津工业大学 | A kind of preparation method of high porosity mesopore nano-graphene fiber |
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| CN110643115A (en) * | 2019-10-21 | 2020-01-03 | 中国科学院山西煤炭化学研究所 | Preparation method of phenolic resin raw material for improving strength of phenolic resin fiber precursor |
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Application publication date: 20190111 |