CN107640755A - One kind improves the oil loving method of foam carbon surface - Google Patents
One kind improves the oil loving method of foam carbon surface Download PDFInfo
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- CN107640755A CN107640755A CN201711116474.2A CN201711116474A CN107640755A CN 107640755 A CN107640755 A CN 107640755A CN 201711116474 A CN201711116474 A CN 201711116474A CN 107640755 A CN107640755 A CN 107640755A
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- foam
- carbon
- oil loving
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- foam carbon
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Abstract
The invention discloses one kind to improve the oil loving method of foam carbon surface, and it is using resin based foam carbon as raw material, dries, is heat-treated after aluminum salt solution impregnates, and obtaining surface has preferable oil loving novel foam charcoal.Carbon foam density produced by the present invention is low, porosity is high, good conductivity, surface degree of graphitization is high, have more mesopore and macropore, and hole links at different levels, there are good adsorption properties to oily substance, while it prepares that cost is low, technique is simple, pollution-free, equipment investment is few, can be recycled, easily realize industrialization.
Description
Technical field
The invention belongs to high performance carbon cellulosic material field, and in particular to one kind improves the oil loving method of foam carbon surface.
Background technology
Carbon foam is once it is found that cause extensive concern, turning into study hotspot for many years, different presomas are prepared into
The Carbon foam arrived has very big difference in aspect of performance.Conventional presoma mainly has pitch, coal and organic polymer.It is organic poly-
Compound is the primary raw material for early stage preparing Carbon foam, is mostly the face of pentagon 12 by being pyrolyzed Carbon foam made from organic polymer
Body structure, there is very high percent opening, hole wall is in non-graphitized state, has excellent heat-insulating property, is a kind of high-performance
Heat-barrier material, while there is higher corrosion resistance, it can apply to electrochemistry and electronic applications.Using pitch and coal as presoma
The Carbon foam of preparation is mainly spherical porosity shape structure, and such Carbon foam via count is more, the graphitization net formed for a large amount of ligaments
Shape structure, heat, electrical conduction can be efficiently carried out, there is excellent electrical and thermal conductivity performance, while micropore in the foam carbon structure
Distribution and arrangement are relatively neat, and ligament structure is fine and close, and stomata is connected with each other, and has higher mechanical strength and gas permeability.
Because resin machine-shaping property is excellent, is not required to applied foam agent and is not required to using a series of features such as template, no
Pitch, coal etc. is address only to prepare complex process in Carbon foam, be difficult to complicated shaping, preparation condition requirement height, operational hazards, system
The shortcomings of product poor mechanical property, while overcome using organic polymer as presoma and prepare complex process in Carbon foam, be difficult to again
Miscellaneous shaping, the shortcomings of carbon yield is relatively low, Mechanical Properties of Products is poor, therefore resin is to prepare the excellent presoma of Carbon foam.
With expanding economy, oil and petroleum product Isoquant are continuously increased, and huge push away is played to industrial expansion
Enter effect, but marine oil overflow accident occurs again and again, and huge harm is brought to the marine environment around accident, therefore, explores
Absorption and recovery to oil turn into the focus of people's research.Carbon foam has high porosity, density is light, intensity is high, it is corrosion-resistant,
The features such as high temperature resistant, there is excellent absorption property, but because the Carbon foam prepared by resin is mostly wire rope state
Charcoal, hole wall is in non-graphitized state, and high-temperature process is difficult to graphitization, poor to the absorption property of oil, therefore how to improve resin
The lipophile on based foam carbon surface becomes a problem.
The content of the invention
It is an object of the invention to provide one kind to improve the oil loving method of foam carbon surface, its obtained foam carbon surface
Degree of graphitization is high, has more mesopore and macropore, and hole link at different levels, has good adsorption properties to oily substance.
To achieve the above object, the present invention adopts the following technical scheme that：
One kind improves the oil loving method of foam carbon surface, and it is in 0.1mol/L-4mol/L aluminium salt by resin based foam carbon
In solution, in 1.0 × 10-2-1.0×1056-48h is impregnated under Pa vacuum conditions, is then taken out, is dried at 50 DEG C -200 DEG C
2h-24h, remove moisture, place into vacuum sintering furnace, in 1200 DEG C -2000 DEG C, vacuum be 1.0 × 10-2-1.0×103
0.1h -6h are heat-treated under conditions of Pa.
The aluminium salt is the one or more in aluminum nitrate, aluminum sulfate, aluminium chloride, aluminium sulfide, alumina silicate.
The beneficial effects of the present invention are：
The present invention by adjusting the concentration of aluminium salt species and its solution, dip time and the temperature and time of graphitization processing,
To improve the lipophile of foam carbon surface, surface lipophile Carbon foam is made.The density of the Carbon foam as made from the inventive method
For 0.1~0.3g/cm3, porosity is 85~98%, and electrical conductivity is 8~20S/cm, and the adsorbance to oil is 7.1-15.2g/g,
And the inventive method has the advantages that cost is low, simple to operate, step is few, pollution-free, equipment investment is few.
Brief description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph of surface lipophile Carbon foam prepared by the embodiment of the present invention 1；
Fig. 2 is the scanning electron microscope (SEM) photograph of surface lipophile Carbon foam prepared by the embodiment of the present invention 2；
Fig. 3 is the scanning electron microscope (SEM) photograph of surface lipophile Carbon foam prepared by the embodiment of the present invention 3；
Fig. 4 is the scanning electron microscope (SEM) photograph of surface lipophile Carbon foam prepared by the embodiment of the present invention 4；
Fig. 5 is the scanning electron microscope (SEM) photograph of surface lipophile Carbon foam prepared by the embodiment of the present invention 5.
Embodiment
In order that content of the present invention easily facilitates understanding, with reference to embodiment to of the present invention
Technical scheme is described further, but the present invention is not limited only to this.
Embodiment 1
1mol/L aluminum nitrate solution is prepared in container, by the vacuum impregnation of resin based foam carbon in this solution（Vacuum 1.0 ×
101 Pa）Middle 12h, then takes out sample, dries 10h at 100 DEG C in drying box, removes moisture, is finally put into sample very
In empty sintering furnace, 5h is kept after being warming up to 1200 DEG C with 5 DEG C/min heating rate（Vacuum 1.0 × 10-1 Pa）, then with stove
Room temperature taking-up is cooled to, producing surface has oil loving foam carbon material.The scanning electron microscope (SEM) photograph of gained Carbon foam such as Fig. 1 institutes
Show, its performance parameter is as follows：Porosity 91.0%, density 0.16g/cm3, electrical conductivity 14.2S/cm, to oil adsorbance be
10.6g/g。
Embodiment 2
Prepare 2mol/L aluminum nitrate-sulfuric acid aluminium mixture（Mass ratio is 1:1）Solution is true by resin based foam carbon in container
Sky is impregnated in this solution（Vacuum 1.0 × 102 Pa）Middle 24h, then takes out sample, dries 8h at 120 DEG C in drying box,
Moisture is removed, finally sample is put into vacuum sintering furnace, 2h is kept after being warming up to 1400 DEG C with 10 DEG C/min heating rate
（Vacuum 1.0 × 102 Pa）, then cool to room temperature taking-up with the furnace, producing surface has oil loving foam carbon material.Gained steeps
The scanning electron microscope (SEM) photograph of foam charcoal is as shown in Fig. 2 its performance parameter is as follows：Porosity 93.8%, density 0.14g/cm3, electrical conductivity
15.9S/cm, the adsorbance to oil is 11.4g/g.
Embodiment 3
0.3mol/L aluminum sulfate solution is prepared in container, by the vacuum impregnation of resin based foam carbon in this solution（Vacuum
1.0Pa）Middle 20h, then takes out sample, dries 12h at 90 DEG C in drying box, removes moisture, is finally put into sample very
In empty sintering furnace, 2h is kept after being warming up to 1800 DEG C with 3 DEG C/min heating rate（Vacuum 1.0 × 10-1 Pa）, then with stove
Room temperature taking-up is cooled to, producing surface has oil loving foam carbon material.The scanning electron microscope (SEM) photograph of gained Carbon foam such as Fig. 3 institutes
Show, its performance parameter is as follows：Porosity 89.1%, density 0.23g/cm3, electrical conductivity 8.8S/cm, the adsorbance to oil is 7.1g/
g。
Embodiment 4
0.5mol/L liquor alumini chloridi is prepared in container, by the vacuum impregnation of resin based foam carbon in this solution（Vacuum 1.0
×105 Pa）Middle 36h, then takes out sample, dries 16h at 50 DEG C in drying box, removes moisture, is finally put into sample
In vacuum sintering furnace, 1h is kept after being warming up to 2000 DEG C with 15 DEG C/min heating rate（Vacuum 1.0 × 10-2 Pa）, then with
Stove is cooled to room temperature taking-up, and producing surface has oil loving foam carbon material.The scanning electron microscope (SEM) photograph of gained Carbon foam such as Fig. 4 institutes
Show, its performance parameter is as follows：Porosity 89.8%, density 0.22g/cm3, electrical conductivity 9.0S/cm, the adsorbance to oil is 8.6g/
g。
Embodiment 5
Prepare 3mol/L aluminum nitrate-aluminum chloride mixture（Mass ratio is 2:1）Solution is true by resin based foam carbon in container
Sky is impregnated in this solution（Vacuum 1.0 × 10-2 Pa）Middle 48h, then takes out sample, is dried in drying box at 70 DEG C
24h, moisture is removed, finally sample is put into vacuum sintering furnace, protected after being warming up to 1600 DEG C with 20 DEG C/min heating rate
Hold 3h（Vacuum 1.0 × 103Pa）, then cool to room temperature taking-up with the furnace, producing surface has oil loving foam carbon material.Institute
The scanning electron microscope (SEM) photograph of Carbon foam is obtained as shown in figure 5, its performance parameter is as follows：Porosity 95.5%, density 0.11g/cm3, electrical conductivity
16.7S/cm, the adsorbance to oil is 15.2g/g.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, it should all belong to the covering scope of the present invention.
Claims (6)
1. one kind improves the oil loving method of foam carbon surface, it is characterised in that：By resin based foam carbon in aluminum salt solution it is true
Taken out after sky dipping, dry, place into vacuum sintering furnace and be heat-treated.
2. improve the oil loving method of foam carbon surface according to claim 1, it is characterised in that：The concentration of aluminum salt solution is
0.1mol/L-4mol/L；The aluminium salt is the one or more in aluminum nitrate, aluminum sulfate, aluminium chloride, aluminium sulfide, alumina silicate.
3. improve the oil loving method of foam carbon surface according to claim 1, it is characterised in that：The vacuum-impregnated time
For 6-48h, vacuum is 1.0 × 10-2-1.0×105 Pa。
4. improve the oil loving method of foam carbon surface according to claim 1, it is characterised in that：The temperature of the drying is
50 DEG C -200 DEG C, drying time 2h-24h.
5. improve the oil loving method of foam carbon surface according to claim 1, it is characterised in that：The temperature of the heat treatment
Spend for 1200 DEG C -2000 DEG C, vacuum is 1.0 × 10-2-1.0×103Pa, processing time are 0.1h -6h.
A kind of 6. surface lipophile Carbon foam made from method as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711116474.2A CN107640755A (en) | 2017-11-13 | 2017-11-13 | One kind improves the oil loving method of foam carbon surface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711116474.2A CN107640755A (en) | 2017-11-13 | 2017-11-13 | One kind improves the oil loving method of foam carbon surface |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738953A (en) * | 2013-12-23 | 2014-04-23 | 大连理工大学 | Preparation method for carbon nano tube-graphene composite foam |
| CN106629709A (en) * | 2016-11-02 | 2017-05-10 | 广西大学 | Method for preparing foam carbon adsorbing material with template process |
-
2017
- 2017-11-13 CN CN201711116474.2A patent/CN107640755A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738953A (en) * | 2013-12-23 | 2014-04-23 | 大连理工大学 | Preparation method for carbon nano tube-graphene composite foam |
| CN106629709A (en) * | 2016-11-02 | 2017-05-10 | 广西大学 | Method for preparing foam carbon adsorbing material with template process |
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Application publication date: 20180130 |