CN108238761A - A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement - Google Patents
A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement Download PDFInfo
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- CN108238761A CN108238761A CN201611217849.XA CN201611217849A CN108238761A CN 108238761 A CN108238761 A CN 108238761A CN 201611217849 A CN201611217849 A CN 201611217849A CN 108238761 A CN108238761 A CN 108238761A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 37
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 37
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 23
- 239000004568 cement Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000012986 modification Methods 0.000 title claims abstract description 16
- 230000004048 modification Effects 0.000 title claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000011398 Portland cement Substances 0.000 claims abstract description 11
- 239000010881 fly ash Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011083 cement mortar Substances 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 6
- 239000006185 dispersion Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 13
- 102000002151 Microfilament Proteins Human genes 0.000 claims description 7
- 108010040897 Microfilament Proteins Proteins 0.000 claims description 7
- 210000003632 microfilament Anatomy 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 5
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical compound [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/36—Diameter
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/90—Electrical properties
- C04B2111/905—Anti-static materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/90—Electrical properties
- C04B2111/94—Electrically conducting materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of preparation methods of carbon nano-tube modification fine stainless steel wire electroconductive cement, include the following steps:(1) 2~8 parts of 35~45 parts of water, aqueous dispersion 1~2min of stirring are sequentially added by weight in agitator for cement mortar, add in 2~8 parts of 1~2min of stirring of carbon nanotube;Add in 0.02~1.00 part of 65~80 parts of portland cement, 6~7 parts of flyash, 5~8 parts of fine stainless steel wire, water-reducing agent 5~10min of stirring;(2) step (1) obtained mixture is poured into mold;(3) mold is put into after being conserved 15~20 days in curing box and demoulded;A diameter of 30~45nm of the carbon nanotube.Preparation process of the present invention is simple, and obtained cement has good electric conductivity, pressure-sensitive and durability, while has good compatibility with concrete structure.
Description
Technical field
The present invention relates to a kind of preparation methods of carbon nano-tube modification fine stainless steel wire electroconductive cement.
Background technology
Concrete is the widest construction material of modern Application, with abundant raw material, cheap, simple for process, strong
The advantages that degree is high, durability is good.Ready-mixed concrete is one kind of concrete, refers to by cement, gathers materials, water and mixes as needed
The components such as the additive, the mineral admixture that enter by a certain percentage mixing plant through metering, sell after mixing and using transport vehicle
It is transported to the concrete mix of place to use at the appointed time.Because site operation has greater environmental impacts, premixing mixes
Solidifying soil receives more and more attention.Due to external loads and corrosion, the effect of the environmental conditions such as material aging and fatigue, bridge
It easily fails during being on active service with concrete structures such as building constructions, so as to threaten the security of the lives and property of people.Structure
Health monitoring technique can pass through the real-time prison to steel bar corrosion rate, water content, pH value, acceleration, stress, strain and crack
Survey the assessment realized to structural behaviour.Mainly include resistance-strain applied to the sensor of concrete structure health monitoring at present
Piece, fibre optical sensor, piezoelectric ceramics and marmem etc..However these sensors there are durability is poor, sensitivity is low, into
This height and with concrete structure compatibility it is bad the shortcomings of.
Invention content
The present invention provides a kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement, cement tool of the present invention
There are good electric conductivity, pressure-sensitive and durability, while there is good compatibility with concrete structure.To reach above-mentioned technology
Effect, the present invention are realized especially by following technical scheme:
A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement, it is characterised in that include the following steps:
(1) 2~8 parts of 35~45 parts of water, aqueous dispersion stirrings 1 are sequentially added by weight in agitator for cement mortar
~2min adds in 2~8 parts of 1~2min of stirring of carbon nanotube;Add in 65~80 parts of portland cement, 6~7 parts of flyash, stainless
0.02~1.00 part of 5~8 parts of steel microfilament, water-reducing agent 5~10min of stirring;
(2) step (1) obtained mixture is poured into mold;
(3) mold is put into after being conserved 15~20 days in curing box and demoulded;
A diameter of 30~45nm of the carbon nanotube.
Further, in the above-mentioned technical solutions, the preparation method of carbon nano-tube is to take copper nitrate 1 according to parts by weight
Part, 6~8 parts of mixtures of 2~4 parts of ferrocene and polypropylene, 2~3 parts of kaolin discharge after 210~220 DEG C of melting mixings, so
Batch mixing is placed in Muffle furnace afterwards, is taken out after being heated 1~2 minute at 800~1000 DEG C and obtains black solid;By black solid
Object, which is added in the hydrochloric acid of a concentration of 10~15wt%, to be impregnated 4~5 hours, is then centrifuged for detaching, is obtained black solid;By black
Solid is dried in vacuo, and obtains carbon nanotube.
Further, in the above-mentioned technical solutions, the portland cement strength grade is C35 or C40.
Further, in the above-mentioned technical solutions, the specific surface of the flyash is 520~760m2/kg。
Further, in the above-mentioned technical solutions, a diameter of 7~9 μm of the fine stainless steel wire, length are 5~8mm,
Elongation percentage > 3%, tensile strength are 1000~1100MPa.
Further, in the above-mentioned technical solutions, temperature is 18~20 DEG C in curing box, and humidity is 92~96%.
Invention advantageous effect
Contain carbon nano-tube fibre in the present invention in cement raw material, form netted pilotaxitic texture, can not only improve cement
The mechanical strength of matrix, and since fiber and cement matrix collective effect can play good extraction and bridging overlap joint effect
Should, fine stainless steel wire is contained in concrete of the present invention, is not influenced in use by corrosion;Microfilament diameter is small, can be low
Effective enhancing network is formed under volume, improves the intensity and toughness of Reactive Powder Concrete matrix;Microfilament pliability is high, can expand
Open up the application range of Reactive Powder Concrete.Cement of the present invention has good electric conductivity, pressure-sensitive and durability, while with mixing
Xtah Crude Clay structure has good compatibility.On road surface electrostatic screen, traffic detection, monitoring steel bar corrosion, stress/strain monitoring,
Crack and damage monitoring etc. have wide research and application prospect.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement, includes the following steps:
(1) 2 parts of 35 parts of water, aqueous dispersion 1~2min of stirring are sequentially added by weight in agitator for cement mortar,
Add in 2 parts of 1~2min of stirring of carbon nanotube;Add in 65 parts of portland cement, 6 parts of flyash, 5 parts of fine stainless steel wire, water-reducing agent
0.02 part of stirring 5min;
(2) step (1) obtained mixture is poured into mold;
(3) mold is put into after being conserved 15 days in curing box and demoulded.
The portland cement strength grade is C35.The specific surface of the flyash is 520~760m2/kg.It is described not
A diameter of 7~9 μm of rust steel microfilament, length are 5~8mm, and elongation percentage > 3%, tensile strength is 1000~1100MPa.
The carbon nanotube use following methods preparation method for according to parts by weight take 1 part of copper nitrate, 2 parts of ferrocene and
6 parts of mixtures of polypropylene, 2 parts of kaolin discharge after 210~220 DEG C of melting mixings, and then batch mixing is placed in Muffle furnace,
It is taken out after being heated 1~2 minute at 800~1000 DEG C and obtains black solid;Black solid object is added to a concentration of 10wt%'s
It is impregnated 4 hours in hydrochloric acid, is then centrifuged for detaching, obtains black solid;Black solid is dried in vacuo, obtains carbon nanotube.Institute
State a diameter of 30~45nm of carbon nanotube.
Embodiment 2
A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement, includes the following steps:
(1) 8 parts of 45 parts of water, aqueous dispersion stirring 2min are sequentially added by weight in agitator for cement mortar, are added
Enter 8 parts of 1~2min of stirring of carbon nanotube;Add in 80 parts of portland cement, 7 parts of flyash, 8 parts of fine stainless steel wire, water-reducing agent
1.00 parts of stirring 10min;
(2) step (1) obtained mixture is poured into mold;
(3) mold is put into after being conserved 20 days in curing box and demoulded.
The portland cement strength grade is C40.The specific surface of the flyash is 520~760m2/kg.It is described not
A diameter of 7~9 μm of rust steel microfilament, length are 5~8mm, and elongation percentage > 3%, tensile strength is 1000~1100MPa.
The carbon nanotube use following methods preparation method for according to parts by weight take 1 part of copper nitrate, 4 parts of ferrocene and
8 parts of mixtures of polypropylene, 3 parts of kaolin discharge after 210~220 DEG C of melting mixings, and then batch mixing is placed in Muffle furnace,
It is taken out after being heated 1~2 minute at 900 DEG C and obtains black solid;Black solid object is added to the salt of a concentration of 10~15wt%
It is impregnated 4~5 hours in acid, is then centrifuged for detaching, obtains black solid;Black solid is dried in vacuo, obtains carbon nanotube.Institute
State a diameter of 30~45nm of carbon nanotube.
Embodiment 3
A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement, includes the following steps:
(1) 5 parts of 40 parts of water, aqueous dispersion 1~2min of stirring are sequentially added by weight in agitator for cement mortar,
Add in 5 parts of 1~2min of stirring of carbon nanotube;Add in 70 parts of portland cement, 6 parts of flyash, 6 parts of fine stainless steel wire, water-reducing agent
0.06 part of stirring 10min;
(2) step (1) obtained mixture is poured into mold;
(3) mold is put into after being conserved 20 days in curing box and demoulded.
The portland cement strength grade is C35.The specific surface of the flyash is 520~760m2/kg.It is described not
A diameter of 7~9 μm of rust steel microfilament, length are 5~8mm, and elongation percentage > 3%, tensile strength is 1000~1100MPa.
The carbon nanotube use following methods preparation method for according to parts by weight take 1 part of copper nitrate, 3 parts of ferrocene and
7 parts of mixtures of polypropylene, 2 parts of kaolin discharge after 210~220 DEG C of melting mixings, and then batch mixing is placed in Muffle furnace,
It is taken out after being heated 1~2 minute at 950 DEG C and obtains black solid;Black solid object is added in the hydrochloric acid of a concentration of 15wt%
It impregnates 4~5 hours, is then centrifuged for detaching, obtains black solid;Black solid is dried in vacuo, obtains carbon nanotube.The carbon
A diameter of 30~45nm of nanotube.
The preferred embodiment of the present invention described in detail above.It should be appreciated that those of ordinary skill in the art without
Creative work is needed according to the present invention can to conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are analysed under this invention's idea by logic minute on the basis of existing technology, reasoning or limited experiment can obtain
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (6)
1. a kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement, it is characterised in that include the following steps:
(1) sequentially added by weight in agitator for cement mortar 35~45 parts of water, 2~8 parts of aqueous dispersion stirring 1~
2min adds in 2~8 parts of 1~2min of stirring of carbon nanotube;Add in 65~80 parts of portland cement, 6~7 parts of flyash, stainless steel
0.02~1.00 part of 5~8 parts of microfilament, water-reducing agent 5~10min of stirring;
(2) step (1) obtained mixture is poured into mold;
(3) mold is put into after being conserved 15~20 days in curing box and demoulded;
A diameter of 30~45nm of the carbon nanotube.
2. the preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement according to claim 1, it is characterised in that:
The preparation method of carbon nano-tube is to take 6~8 parts of 1 part of copper nitrate, 2~4 parts of ferrocene and polypropylene according to parts by weight
Mixture, 2~3 parts of kaolin discharge after 210~220 DEG C of melting mixings, and then batch mixing is placed in Muffle furnace, 800~
It is taken out after being heated 1~2 minute at 1000 DEG C and obtains black solid;Black solid object is added to the salt of a concentration of 10~15wt%
It is impregnated 4~5 hours in acid, is then centrifuged for detaching, obtains black solid;Black solid is dried in vacuo, obtains carbon nanotube.
3. the preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement according to claim 1, it is characterised in that:Institute
Portland cement strength grade is stated as C35 or C40.
4. the preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement according to claim 1, it is characterised in that:Institute
The specific surface for stating flyash is 520~760m2/kg。
5. the preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement according to claim 1, it is characterised in that:Institute
State fine stainless steel wire a diameter of 7~9 μm, length are 5~8mm, and elongation percentage > 3%, tensile strength is 1000~1100MPa.
6. the preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement according to claim 1, it is characterised in that:It supports
Temperature is 18~20 DEG C in protecting box, and humidity is 92~96%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201611217849.XA CN108238761A (en) | 2016-12-26 | 2016-12-26 | A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement |
Applications Claiming Priority (1)
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CN201611217849.XA CN108238761A (en) | 2016-12-26 | 2016-12-26 | A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement |
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CN108238761A true CN108238761A (en) | 2018-07-03 |
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CN201611217849.XA Pending CN108238761A (en) | 2016-12-26 | 2016-12-26 | A kind of preparation method of carbon nano-tube modification fine stainless steel wire electroconductive cement |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110627431A (en) * | 2019-09-09 | 2019-12-31 | 东南大学 | Ultrahigh-sensitivity pressure-sensitive cement-based composite material and preparation method and application thereof |
CN113816697A (en) * | 2021-10-28 | 2021-12-21 | 国网河南省电力公司直流运检分公司 | High-conductivity composite grounding material and preparation method thereof |
-
2016
- 2016-12-26 CN CN201611217849.XA patent/CN108238761A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110627431A (en) * | 2019-09-09 | 2019-12-31 | 东南大学 | Ultrahigh-sensitivity pressure-sensitive cement-based composite material and preparation method and application thereof |
CN113816697A (en) * | 2021-10-28 | 2021-12-21 | 国网河南省电力公司直流运检分公司 | High-conductivity composite grounding material and preparation method thereof |
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Application publication date: 20180703 |