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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- 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
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- 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 |
|---|---|---|---|
| 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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| 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 |
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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 |