CN107952290A - The preparation of microfibre-carbon nano tube compound material - Google Patents
The preparation of microfibre-carbon nano tube compound material Download PDFInfo
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- CN107952290A CN107952290A CN201610905844.XA CN201610905844A CN107952290A CN 107952290 A CN107952290 A CN 107952290A CN 201610905844 A CN201610905844 A CN 201610905844A CN 107952290 A CN107952290 A CN 107952290A
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- China
- Prior art keywords
- microfibre
- nano tube
- carbon nano
- tube compound
- compound material
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2027—Metallic material
- B01D39/2041—Metallic material the material being filamentary or fibrous
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2055—Carbonaceous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
Abstract
Patent of the present invention discloses preparation and the purposes of microfibre carbon nano tube compound material, it is characterised in that：The composite material is that support type filtering material of the carbon nanotubes as active function is grown on metal structured microfibre.A diameter of 2 10um of the microfibre, carbon nanotube diameter are 20 60nm.The tridimensional network of the filtering material causes macroporosity and good gas permeability, and the pernicious gas available for personal breathing mask and local confined space removes, also can be as the inductive material of Detection of Air Quality sensor.
Description
Technical field
The present invention relates to material science and technical field of environmental purification, and in particular to one kind is using carbon nanotubes as active function
Component, metal microfibre are the filtering material preparation method and application of matrix.
Background technology
The problems such as China's environmental problem is quite serious at present, urban industry pollution, rivers,lakes and seas water pollution, environmental degradation day
Benefit is prominent, and strengthen environmental protection has become the fundamental state policy in China.With being increasingly enhanced for people's environmental consciousness, environmental improvement is seen
Thought turns to watershed management by end treatment, and enterprise is while economic benefit is pursued, it is necessary to realizes low consumption, efficient, pollution-free
The mode of production.Thus, wide market is provided for the development of various filtering materials.
Filtering material is widely used in the fields such as metallurgy, chemical industry, light industry, medicine, food, machinery, automobile and environmental protection.Filtering
Material production is closely coupled with environmental protection industry.In recent years, taken in terms of the production of China's filtering material, product development, the market expansion
Obtained rapid progress.Filter material in the market majority protective device is with organic polymer or similar living with the core filter material of equipment at present
Based on the inorganic material of property charcoal.One of the defects of using organic polymer as filter material is that heat-resisting quantity is poor, can not meet high-temp waste gas
Processing and the requirement of high-temperature operation.Product using inorganic matter as filter material, majority are using sintering/melting or extruding Microspheres Technique system
Standby high surface area overall structure material (such as ceramic honey comb, honeycomb).For sintering/melting micro-sphere material, Zhi Neng
Obtained in fixed area and be distributed very narrow voidage, and gap rate score depends strongly on accumulation mode；In addition, sintering/molten
The effective aperture for melting micro-sphere material formation network also depends on the diameter of microballoon.Therefore, in a way, its application is limited
The exploitation in field.
In recent years, nano material is all obtained in various aspects such as the energy, environmental protection, medical treatment, electronics industry and textile industries
Conspicuous achievement, is known as the important materials of 21 century, wherein, there is the carbon nanotubes of broad based growth and application value
The abundant attention of countries in the world researchers is caused.Carbon nanotubes has lighter quality, and perfect structure connects, in addition
Also there are many unique mechanics, electrically and physically chemical properties, such as high mechanical strength, the metal of protrusion or semiconductor is led
Electrically with good absorption property, it is typical monodimension nanometer material carbon nanotubes, is not only largely applied in material science
In analytical chemistry, and since it has the specific surface area of substantial amounts of micropore and specific activity charcoal bigger, so also extensive
As sorbent material.
The unique advantage of macroporosity is being manufactured based on fibrous material：The aperture of porosity and tridimensional network is easy to adjust
Control, United States Patent (USP) (U.S.Patents 5,304,330；5,080,963；5,1022,745；5,096,663；With 6,231,792)
Having invented has tridimensional network sintered fiber and its manufacture method.The present inventor sends out in American Chemical Society's annual meeting in 2007
Table carries out ammonolysis craft with Ni microfibre inclusion loaded catalysts and prepares hydrogen, its resolution ratio is far above other scientific research institution's water
It is flat.
The content of the invention
It is an object of the invention to not only provide a kind of metal microfibre-carbon nanotubes filter material with good result
Material, and by the improvement of technique, develop the filtering material for removing a variety of pernicious gases.
The invention solves first technical problem be to provide a kind of porous filtering of structuring microfibre-carbon nanotubes
Material.The filtering material is to grow carbon nanotubes in microfibre, forms poroid, the filtering material of high porosity, the fento
The a diameter of 2-10um, a diameter of 20-60nm of carbon nanotubes of dimension.The composite filter material includes microfibre, carbon nanotubes,
Microfibre can be metal microfibre iron, cobalt, nickel, and the binding site of microfibre is sintered together, and form tridimensional network, and carbon is received
Nanotube growth is on the microfibre of tridimensional network, and the voidage of the material is 20-80%, and microfibre accounts for the material cumulative volume
3-15%.The material has the following advantages：(1) there is the microfibre of wide aspect ratio so that influenced from microfiber diameter, solely
On the spot creating large porosity material arbitrarily can cut and select at the same time aperture；(2) tridimensional network can be received with raised growth carbon
Mitron, as filter activity material；(3) tridimensional network of the microfibre described in has good corrosion resistance, anti-oxidant
Performance；(4) manufacturing process is easy, expense is low and is easily modified.
The invention solves second technical problem be to realize the nanostructured of carbon nanotubes, it is characterised in that nanometer
The carbon pipe of level, expands the adsorption surface area and adsorbance to pernicious gas, improves the adsorption efficiency of pernicious gas, improve mass transfer with
Heat transfer efficiency.
The invention solves the 3rd technical problem be to provide a kind of method for manufacturing the filtering material.The present invention adopts
Above-mentioned technical problem is resolved with following technical scheme：(1) microfibre of selected ratio, binding agent are added separately to fit
Measure in water, stir into uniform slurries；(2) obtained slurries are filtered on molding die, forms presoma；(3) will obtain
Presoma drying, sinter under specified temp and atmosphere the binding site of microfibre and microfibre, obtain micro-fiber structure mistake
Filter material material；(4) carbon nanotubes is grown on filtering material, by calcining, obtains structuring microfibre-carbon nanotubes combined filtration
Material.
Technical scheme described further below：
Metal microfibre-carbon nanotubes filtering material preparation method, including following operating procedure：
The first step：Binding agent, microfibre are added to the water successively, stir into uniform slurries, binding agent: microfibre:
The weight ratio of water is 1: 1.5-3: 5-1000, and binding agent is diameter and length is respectively the water-insoluble of 10-100um and 1-5mm
Cellulose, microfibre are metal microfibres；
Second step：Slurries made from second step are added to the water, filter out water after being mixed evenly, are formed on filtering mould
Wet cake, binding agent: the weight ratio of water is 1: 5000-10000；
3rd step：Wet cake made from 3rd step is dried, in air or H at a temperature of 400-1200 DEG C2Middle sintering
5-120 minutes, product, sintered microfiber dimension structuring filtering material is made；
4th step：Using microfibre metal as catalyst, using magnetron sputtering method, H is first used2Processing, 800-900 DEG C of temperature, H2
Flow 100-300sccm, air pressure 2700Pa；
5th step：NH is used afterwards3Instead of H2Gas, is passed through C after 1-5min2H2Gas, proceed by carbon nanotubes coring and
Growth.NH3And C2H2Throughput is respectively 150-400sccm and 60-180sccm, and growth time 10-30min, obtains metal
Microfibre-carbon nanotubes filtering material.
Beneficial effect：
Compared with prior art, the present invention has following remarkable advantage：
(1) composite material contains ties up in the sintered microfiber of tridimensional network
(2) the network aperture of tridimensional network and voidage can continuously regulate and control
(3) composite material has macroporosity, large area volume ratio
(4) tridimensional network can increase growth carbon nano tube surface product
(5) manufacturing process is easy, expense is low and is easily modified
Embodiment
Product of the present invention and preparation method thereof is described below by specific embodiment.Unless stated otherwise, it is of the invention
In used technological means be method known in those skilled in the art.In addition, embodiment be interpreted as it is illustrative,
The scope being not intended to limit the present invention, the spirit and scope of the invention are limited only by the claims that follow.For people in the art
For member, on the premise of without departing substantially from spirit and scope of the present invention, the material component in these embodiments and dosage are carried out
Various changes or change fall within protection scope of the present invention.
Embodiment 1
The first step：Take 1g binding agents to be added in 1000g water, stir evenly, 3g microfibres are then added into aforesaid liquid,
Homogeneous slurry is stirred into, binding agent: microfibre: the weight ratio of water is 1: 3: 1000.Binding agent is diameter and length is respectively 10-
The water insoluble cellulosic of 100um and 1-10mm, microfibre are metal microfibres.
Second step：Slurries made from the first step are added in the filtering container for filling 5000g water, by water after being mixed evenly
Filter out, wet cake, binding agent are formed on filtering mould：The weight ratio for adding water is 1: 6000.
3rd step：Wet cake made from second step is dried, dry filter cake sinters 10 points at a temperature of 800 DEG C in air
Clock, is made dimensional structured filtering material.The voidage of filter material is 80%, and microfibre accounts for the 10% of product cumulative volume.
4th step：Using magnetron sputtering method, H is used2Handle microfibre, 850 DEG C of temperature, H2Flow 200sccm, air pressure are
2700Pa。
5th step：Use NH3Instead of H2Gas, is passed through C after 1min2H2Gas, proceeds by the coring and growth of carbon nanotubes.
NH3And C2H2Throughput is respectively 250sccm and 120sccm, and growth time 15min, obtains metal microfibre-carbon nanotubes
Filtering material, the product labelling are A.
Embodiment 2
The first step：Take 1g binding agents to be added in 1000g water, stir evenly, then by 3g microfibres, 5g active carbon particles
Aforesaid liquid is sequentially added, stirs into homogeneous slurry, binding agent: microfibre: active carbon particle: the weight ratio of water is 1: 3: 5:
1000.Binding agent is diameter and length is respectively the water insoluble cellulosic of 10-100um and 1-10mm, and microfibre is that metal is micro-
Fiber, a diameter of 8-10um, a diameter of 150-200um of active carbon particle.
3rd step：Slurries made from second step are added in the filtering container for filling 5000g water, by water after being mixed evenly
Filter out, wet cake, binding agent are formed on filtering mould：The weight ratio for adding water is 1: 6000.
4th step：Wet cake made from 3rd step is dried, dry filter cake sinters 10 points at a temperature of 800 DEG C in air
Clock, is made product, and sintered microfiber ties up the composite porous of structuring micrometer size granule.The voidage of product is 80%.Should
Product labelling is B.
Embodiment 5
A, two kinds of filtering materials of B carry out low concentration unwanted gas test in tubular reactor.Tubular reactor internal diameter is
12mm.Two kinds of filtering materials are cut into the circular filter film of diameter 12mm, are positioned in tubular reactor.The temperature of reactor
Degree is controlled by (0-400 DEG C) of the temperature controller detected with thermocouple, and the flow of pernicious gas controls (100- by external spinner flowmeter
500sccm).A, the test result of two kinds of filter materials of B is listed in Table 1 below.The result shows that for a variety of pernicious gases of low concentration,
The filter effect of metal microfibre-carbon nanotubes filtering material is better than metal microfibre-activated charcoal filter material.
Table 1
Present invention display, the structuring filtering material that growth carbon nanotubes obtains on flexible microfibre substantially meet industry,
Civilian, military and Code in Hazardous Special Locations pernicious gas requirement of shelter, suitable for the anti-of people's breathing mask and local confined space
Shield.It is the features such as tridimensional network, macroporosity based on micro-fiber structure, good gas permeability, harmful available for industry
The association area such as gas removal and air purification.
The scope of the present invention is not limited by the specific embodiments described, and affiliated scheme is only intended to each as the present invention is illustrated
The single example of aspect.In fact, in addition to content as described herein, those skilled in the art can hold with reference to described above
Change places and grasp to a variety of improvement of the invention.The improvement is also fallen within the scope of the appended claims.
Claims (10)
1. microfibre-carbon nano tube compound material, it is characterised in that：The composite material is raw on metal structured microfibre
Long carbon nanotubes, as the support type filtering material of active function, a diameter of 2-10um of the microfibre, carbon nanotubes
A diameter of 20-60nm.
2. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：The microfibre is to pass through
Filter cake is prepared in wet moulding.
3. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：The metallic fiber accounted for
The percentage by weight of filter material material is 30-90%.
4. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：The carbon nanotubes accounted for
The percentage by weight of filter material material is 10-70%.
5. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：Catalyst-the adsorbent
By in gap of the inclusion between metallic fiber.
6. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：The hole of the filtering material
Gap rate is 40-80%.
7. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：The metal microfibre is
Iron, cobalt, nickel.
8. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：The filtering material can be with
Arbitrary dimension and shape are cut to, can also be directly pleated or direct multiple-layer stacked.
9. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：Can eliminate at the same time a variety of has
Evil gas.
10. microfibre-carbon nano tube compound material according to claim 1, it is characterised in that：It can apply in a people's air defense
The inductive material of malicious mask, confined space protection and gas detection sensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905844.XA CN107952290A (en) | 2016-10-18 | 2016-10-18 | The preparation of microfibre-carbon nano tube compound material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610905844.XA CN107952290A (en) | 2016-10-18 | 2016-10-18 | The preparation of microfibre-carbon nano tube compound material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102600667A (en) * | 2012-02-13 | 2012-07-25 | 清华大学 | Air filter material based on carbon nano tube and preparation method thereof |
| CN103811754A (en) * | 2014-01-22 | 2014-05-21 | 东风商用车有限公司 | Preparation method of lithium iron phosphate/carbon nanotube composite material |
| CN104857928A (en) * | 2014-02-26 | 2015-08-26 | 天津工业大学 | Load-type carbon monoxide filtering material preparation and applications |
| US20150243451A1 (en) * | 2012-11-13 | 2015-08-27 | Daegu Gyeongbuk Institute Of Science And Technology | Method for preparing carbon nanofiber composite and carbon nanofiber composite prepared thereby |
-
2016
- 2016-10-18 CN CN201610905844.XA patent/CN107952290A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102600667A (en) * | 2012-02-13 | 2012-07-25 | 清华大学 | Air filter material based on carbon nano tube and preparation method thereof |
| US20150243451A1 (en) * | 2012-11-13 | 2015-08-27 | Daegu Gyeongbuk Institute Of Science And Technology | Method for preparing carbon nanofiber composite and carbon nanofiber composite prepared thereby |
| CN103811754A (en) * | 2014-01-22 | 2014-05-21 | 东风商用车有限公司 | Preparation method of lithium iron phosphate/carbon nanotube composite material |
| CN104857928A (en) * | 2014-02-26 | 2015-08-26 | 天津工业大学 | Load-type carbon monoxide filtering material preparation and applications |
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Application publication date: 20180424 |