CN107673688A - A kind of CNT cement composite material and preparation method thereof - Google Patents
A kind of CNT cement composite material and preparation method thereof Download PDFInfo
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- CN107673688A CN107673688A CN201710853162.3A CN201710853162A CN107673688A CN 107673688 A CN107673688 A CN 107673688A CN 201710853162 A CN201710853162 A CN 201710853162A CN 107673688 A CN107673688 A CN 107673688A
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Classifications
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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
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
Abstract
The invention discloses a kind of CNT cement composite material, it is characterised in that including following raw material and weight fraction：The mass parts of Portland cement 90 100, the mass parts of sand 135 150, the mass parts of water 40 45, the mass parts of gypsum 48, the mass parts of second class powered coal ash 27 30, the mass parts of defoamer 0.1 0.4, the mass parts of water reducer 27 30, the mass parts of dispersant 10 15, the mass parts of CNT 9 10, the mass parts of liquid-state epoxy resin 10 20, the mass parts of the concentrated sulfuric acid 37 and the mass parts of concentrated nitric acid 5 10.Carboxylation modification is carried out to CNT by using the concentrated sulfuric acid and concentrated nitric acid, makes CNT relatively uniform in the surface distributed of composite, makes CNT distribution more uniform by using mix grinding technique, improves the performance of composite；Chemical modification is added by using mix grinding technique, inert particle surface is produced powerful chemical action, and the generation of chemical action energy is one relatively slow, can be adjusted and control its generating process.
Description
Technical field
The present invention relates to field of material technology, specially a kind of CNT cement composite material and preparation method thereof.
Background technology
CNT, also known as Baji-tube, it is a kind of One-dimensional Quantum material with special construction, there is radial dimension to receive
Rice magnitude, axial dimension is micron dimension, and pipe both ends are substantially all the design feature of sealing.CNT is as 1-dimention nano
Material, in light weight, hexagonal structure connection is perfect, has many abnormal mechanics, electricity and chemical properties.In recent years with carbon
Its wide application prospect of going deep into of nanotube and nano materials research is also constantly shown.
Cement, powdery hydraulicity inorganic coagulation material, add water stir after into slurry, can harden in atmosphere or in water
Preferably hardening, and can the materials such as sand, stone is cemented together securely.For a long time, it is as a kind of important gelling material
Material, is widely used in the engineerings such as civil construction, water conservancy, national defence.
Currently used process for dispersing is using surfactant combination ultrasonic technique, the active force of surfactant and is surpassed
Sound technique is physical force, destroys another physical force with a kind of physical force, its effect is undesirable, leads
The CNT skewness for meeting material surface is caused, influences the performance of composite.
The content of the invention
It is an object of the invention to the CNT skewness for existing CNT cement composite material surface
Situation, there is provided a kind of CNT cement composite material and preparation method thereof.
The present invention is solves above-mentioned technical deficiency, using modified technical scheme, including following raw material and weight fraction：It is general
Logical portland cement 90-100 mass parts, sand 135-150 mass parts, water 40-45 mass parts, gypsum 4-8 mass parts, two level fine coal
Grey 27-30 mass parts, defoamer 0.1-0.4 mass parts, water reducer 27-30, dispersant 10-15 mass parts, CNT 9-10
Mass parts, liquid-state epoxy resin 10-20 mass parts, concentrated sulfuric acid 3-7 mass parts and concentrated nitric acid 5-10 mass parts.
As a kind of preferred embodiment of the present invention, including following raw material and weight fraction：Portland cement 100
Mass parts, the mass parts of sand 150, the mass parts of water 45, the mass parts of gypsum 8, the mass parts of second class powered coal ash 30, the mass parts of defoamer 0.4,
The mass parts of water reducer 30, the mass parts of dispersant 10, the mass parts of CNT 10, the mass parts of liquid-state epoxy resin 20, the matter of the concentrated sulfuric acid 7
Measure part and the mass parts of concentrated nitric acid 10.
It is as follows as a kind of preferred embodiment of the present invention, manufacturing process steps：
A. above-mentioned raw materials are prepared according to certain pbw；
B. Portland cement is placed in cement mixer, sand, water and diminishing is added into Portland cement
Agent, mixing time continue 3 minutes；
C. it is CNT and dispersant is scattered 30 minutes at a high speed using ultrasonic agitation machine；
D. the mixture of CNT and dispersant is added in cement mixer, mixed slowly 2 minutes；
E. addition defoamer in most backward cement mixer, quick stirring 3 minutes, complete to prepare.
As the present invention a kind of preferred embodiment, the defoamer I be organosiloxane.
Compared with prior art, beneficial effects of the present invention are as follows：
1st, by the present invention in that carrying out Carboxylation modification to CNT with the concentrated sulfuric acid and concentrated nitric acid, CNT is made multiple
The surface distributed of condensation material is relatively uniform, makes CNT distribution more uniform by using mix grinding technique, improves composite
Performance.
2nd, by the present invention in that adding chemical modification with mix grinding technique, inert particle surface is made to produce powerful chemical action
Can, and the generation of chemical action energy is one relatively slow, can be adjusted and control its generating process.
Embodiment
A kind of CNT cement composite material, it is characterised in that including following raw material and weight fraction：Normal silicate
Cement 90-100 mass parts, sand 135-150 mass parts, water 40-45 mass parts, gypsum 4-8 mass parts, second class powered coal ash 27-30
Mass parts, defoamer 0.1-0.4 mass parts, water reducer 27-30 mass parts, dispersant 10-15 mass parts, CNT 9-10 matter
Measure part, liquid-state epoxy resin 10-20 mass parts, concentrated sulfuric acid 3-7 mass parts and concentrated nitric acid 5-10 mass parts.
A kind of described CNT cement composite material, including following raw material and weight fraction：Portland cement
100 mass parts, the mass parts of sand 150, the mass parts of water 45, the mass parts of gypsum 8, the mass parts of second class powered coal ash 30, the mass of defoamer 0.4
Part, the mass parts of water reducer 30, the mass parts of dispersant 10, the mass parts of CNT 10, the mass parts of liquid-state epoxy resin 20, the concentrated sulfuric acid
7 mass parts and the mass parts of concentrated nitric acid 10.
A kind of preparation method of described CNT cement composite material, manufacturing process steps are as follows：
A. above-mentioned raw materials are prepared according to certain pbw；
B. Portland cement is placed in cement mixer, sand, water and diminishing is added into Portland cement
Agent, mixing time continue 3 minutes；
C. it is CNT and dispersant is scattered 30 minutes at a high speed using ultrasonic agitation machine；
D. the mixture of CNT and dispersant is added in cement mixer, mixed slowly 2 minutes；
E. addition defoamer in most backward cement mixer, quick stirring 3 minutes, complete to prepare.
The defoamer is organosiloxane.
Embodiment 1
A kind of CNT cement composite material, including following raw material and weight fraction：The mass of Portland cement 100
Part, the mass parts of sand 150, the mass parts of water 45, the mass parts of gypsum 8, the mass parts of second class powered coal ash 30, the mass parts of defoamer 0.4, diminishing
The mass parts of agent 30, the mass parts of dispersant 10, the mass parts of CNT 10, the mass parts of liquid-state epoxy resin 20, the mass parts of the concentrated sulfuric acid 7
With the mass parts of concentrated nitric acid 10.
Manufacturing process steps are as follows：
A. above-mentioned raw materials are prepared according to certain pbw；
B. Portland cement is placed in cement mixer, sand, water and diminishing is added into Portland cement
Agent, mixing time continue 3 minutes；
C. it is CNT and dispersant is scattered 30 minutes at a high speed using ultrasonic agitation machine；
D. the mixture of CNT and dispersant is added in cement mixer, mixed slowly 2 minutes；
E. addition defoamer in most backward cement mixer, quick stirring 3 minutes, complete to prepare.
Manufacture craft in the present invention improves the distribution situation for the CNT for meeting material surface, is distributed CNT
More uniformly, the structural strength of composite is improved.
Embodiment 2
A kind of CNT cement composite material, including following raw material and weight fraction：The mass of Portland cement 100
Part, the mass parts of sand 150, the mass parts of water 45, the mass parts of gypsum 8, the mass parts of second class powered coal ash 30, the mass parts of defoamer 0.4, diminishing
The mass parts of agent 30, the mass parts of dispersant 10, the mass parts of CNT 10, the mass parts of liquid-state epoxy resin 20, the mass parts of the concentrated sulfuric acid 7
With the mass parts of concentrated nitric acid 10.
Manufacturing process steps are as follows：
A. above-mentioned raw materials are prepared according to certain pbw；
B. CNT is uniformly mixed with second class powered coal ash first；
C. the mixture of CNT and second class powered coal ash is put into high speed ball mill, milling time continues 20 minutes；
D. Portland cement, Sha Heshui are put into cement mixer, water reducer is added into cement mixer, stirred
Mixing the time continues 3 minutes；
E. the CNT and the mixture of second class powered coal ash added into cement mixer after grinding, adds water, water
The stirring of mud mixer continues 2 minutes, finally adds defoamer again, and mixing time continues 3 minutes, completes to prepare.
Manufacture craft in the present invention realizes Mechanics of Machinery effect using mix grinding technique so that CNT is the same as two level fine coal
Ash produces chemisorbed, because second class powered coal ash has preferable mobility and good with cement compatibility, and can produce secondary
Hydration reaction, the surface distributed for realizing CNT in composite is more uniform, improves CNT cement composite material
Dispersiveness and compression strength, because abrasive power reduces the aspect ratio of CNT, add the anti-crack ability of CNT.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification made；Equivalent substitution；Improve etc., it should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of CNT cement composite material, it is characterised in that including following raw material and weight fraction：Normal silicate water
Mud 90-100 mass parts, sand 135-150 mass parts, water 40-45 mass parts, gypsum 4-8 mass parts, second class powered coal ash 27-30 matter
Measure part, defoamer 0.1-0.4 mass parts, water reducer 27-30, dispersant 10-15 mass parts, CNT 9-10 mass parts, liquid
State epoxy resin 10-20 mass parts, concentrated sulfuric acid 3-7 mass parts and concentrated nitric acid 5-10 mass parts.
2. a kind of CNT cement composite material according to claim 1, it is characterised in that including following raw material and again
Measure fraction：The mass parts of Portland cement 100, the mass parts of sand 150, the mass parts of water 45, the mass parts of gypsum 8, second class powered coal ash
30 mass parts, the mass parts of defoamer 0.4, the mass parts of water reducer 30, the mass parts of dispersant 10, CNT 10, liquid epoxy tree
The mass parts of fat 20, the mass parts of the concentrated sulfuric acid 7 and the mass parts of concentrated nitric acid 10.
A kind of 3. CNT cement composite material preparation method according to claim 1, it is characterised in that manufacture craft
Step is as follows：
A. above-mentioned raw materials are prepared according to certain pbw；
B. Portland cement is placed in cement mixer, sand, water and water reducer is added into Portland cement, is stirred
Mixing the time continues 3 minutes；
C. it is CNT and dispersant is scattered 30 minutes at a high speed using ultrasonic agitation machine；
D. the mixture of CNT and dispersant is added in cement mixer, mixed slowly 2 minutes；
E. addition defoamer in most backward cement mixer, quick stirring 3 minutes, complete to prepare.
A kind of 4. preparation method of CNT cement composite material according to claim 1, it is characterised in that：It is described to disappear
Infusion is organosiloxane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710853162.3A CN107673688A (en) | 2017-09-20 | 2017-09-20 | A kind of CNT cement composite material and preparation method thereof |
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| CN201710853162.3A CN107673688A (en) | 2017-09-20 | 2017-09-20 | A kind of CNT cement composite material and preparation method thereof |
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| CN107673688A true CN107673688A (en) | 2018-02-09 |
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| CN201710853162.3A Pending CN107673688A (en) | 2017-09-20 | 2017-09-20 | A kind of CNT cement composite material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840640A (en) * | 2018-08-28 | 2018-11-20 | 长安大学 | A kind of carbon nano tube/epoxy resin composite strengthening grouting material and preparation method thereof |
| CN109020422A (en) * | 2018-09-28 | 2018-12-18 | 长安大学 | A kind of 3D printing carbon nanotube ultra-high performance concrete and preparation method thereof |
| CN110550919A (en) * | 2019-09-29 | 2019-12-10 | 北京工业大学 | method for improving chloride ion permeation resistance of cement-based material |
| CN112811868A (en) * | 2021-01-19 | 2021-05-18 | 盐城工学院 | Carbon nanotube modified sea sand cement mortar and preparation method thereof |
| CN113929377A (en) * | 2020-07-14 | 2022-01-14 | 南京林业大学 | Preparation method of carbon nanotube modified high-strength high-toughness cement-based composite material |
| CN115477496A (en) * | 2022-08-31 | 2022-12-16 | 江苏百瑞吉新材料有限公司 | Concrete anti-cracking additive and preparation method and application thereof |
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| CN102199032A (en) * | 2011-01-21 | 2011-09-28 | 合肥工业大学 | Carbon nanotube reinforced alumina ceramic composite material and its preparation method |
| CN104341719A (en) * | 2014-10-23 | 2015-02-11 | 衡水学院 | Method for preparing carbon-nanotube epoxy-resin composite material |
| CN104387005A (en) * | 2014-10-30 | 2015-03-04 | 苏州莱特复合材料有限公司 | Carbon nanotube/cement composite material and preparation method thereof |
| CN107010893A (en) * | 2017-04-10 | 2017-08-04 | 河海大学 | A kind of graphene/carbon nano-tube cement group water-proofing material and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840640A (en) * | 2018-08-28 | 2018-11-20 | 长安大学 | A kind of carbon nano tube/epoxy resin composite strengthening grouting material and preparation method thereof |
| CN108840640B (en) * | 2018-08-28 | 2019-06-21 | 长安大学 | A kind of carbon nano tube/epoxy resin composite strengthening grouting material and preparation method thereof |
| CN109020422A (en) * | 2018-09-28 | 2018-12-18 | 长安大学 | A kind of 3D printing carbon nanotube ultra-high performance concrete and preparation method thereof |
| CN109020422B (en) * | 2018-09-28 | 2019-06-25 | 长安大学 | A kind of 3D printing carbon nanotube ultra-high performance concrete and preparation method thereof |
| CN110550919A (en) * | 2019-09-29 | 2019-12-10 | 北京工业大学 | method for improving chloride ion permeation resistance of cement-based material |
| CN113929377A (en) * | 2020-07-14 | 2022-01-14 | 南京林业大学 | Preparation method of carbon nanotube modified high-strength high-toughness cement-based composite material |
| CN112811868A (en) * | 2021-01-19 | 2021-05-18 | 盐城工学院 | Carbon nanotube modified sea sand cement mortar and preparation method thereof |
| CN115477496A (en) * | 2022-08-31 | 2022-12-16 | 江苏百瑞吉新材料有限公司 | Concrete anti-cracking additive and preparation method and application thereof |
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Application publication date: 20180209 |
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