CN101333096A - Conductive cement and method for preparing same - Google Patents
Conductive cement and method for preparing same Download PDFInfo
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- CN101333096A CN101333096A CNA2008100714167A CN200810071416A CN101333096A CN 101333096 A CN101333096 A CN 101333096A CN A2008100714167 A CNA2008100714167 A CN A2008100714167A CN 200810071416 A CN200810071416 A CN 200810071416A CN 101333096 A CN101333096 A CN 101333096A
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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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00844—Uses not provided for elsewhere in C04B2111/00 for electronic applications
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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
- 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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Abstract
The invention discloses a conductive concrete and a preparation method; the conductive cement comprises the following components based on weight proportion: 100 portions of cement, 50-300 portions of sand, 1-30 portions of graphite, and water; wherein, the mass ratio between the dosage of water and the total dosage of the cement, sand and graphite is 0.3:1-0.35:1; the graphite is nano-graphite microchip which is 10-80nm in thickness and 0.2-20 microns in diameter. The cement, the sand and the nano-graphite microchip are evenly mixed, poured and molded, and then maintained for 24 hours at room temperature and under the conditions of 90% humidity for condensation. The conductive concrete obtained in the invention has good conductive properties, simple preparation method, small volume resistivity and high mechanical strength, and can be made into refined products, dope, mortar and concrete; the conductive concrete can be widely applied to industrial anti-static and shielding electromagnetic wave materials and non-metallic electric heating elements.
Description
Technical field
The present invention relates to a kind of electroconductive cement and preparation method thereof, belong to the building material industrial technology field.
Background technology
Cement is as the ideal structured material, so far have a century and a half from invention, it has brought into play great effect for the development of human civilization, still, along with human society and science and technology development, traditional cement material of function singleness can not satisfy the needs of engineering and the requirement of new technology.Modern architecture requires cement material except keeping original characteristic, and some special functional (as electricity, sound, magnetic, heat etc.) also need be arranged, to adapt to multi-functional and requirement intelligent building.
In present known technology, general electroconductive cement and conductive cement product thereof are to make by adding electro-conductive material.The used conductive filler material of the cement based conductive material of current research is carbon fiber, steel fiber and graphite.
As China Patent No. is the patented technology that the patent documentation of 200710024795.X discloses a kind of electroconductive cement and preparation method thereof, this disclosure of the Invention a kind of electroconductive cement, comprise cement body, electro-conductive material and material modified, it is characterized in that the content of described electroconductive cement is: the content of described electroconductive cement is: 20%～50% ak quench steel slag; 2%～7% levigate natural dihydrate gypsum; All the other are Portland clinker, and above composition is made the raw material of electroconductive cement.The technological process of its preparation method is: the raw material of preparation electroconductive cement; Enter the grinding machine grinding after being mixed in proportion with described electroconductive cement raw material; Described electroconductive cement raw material adds water in proportion and stirs; Make moulding; Maintenance is condensed more than 24 hours or 24 hours under 15～25 ℃ of envrionment temperatures, 85%～95% humidity condition.The present invention has reduced the cost of conducting concrete, has developed the application new channel of this industrial waste of ak quench steel slag, reduces the influence to environment, realizes the recycling of Iron and Steel Production byproduct.
And for example the patent documentation of China Patent No. CN1226526 discloses the patented technology of a kind of electrically conductive graphite cement boards and preparation method thereof, and this invention provides a kind of electrically conductive graphite cement composition, a kind of electrically conductive graphite cement boards of preparation thus and their preparation method.Its technical scheme is: electrically conductive graphite cement boards is by hydraulic cement being mixed with a certain proportion of graphite, silica powder, paper pulp or asbestos to form the electroconductive cement composition; With said composition and excessive buck uniform mixing, form the slurry of lower concentration; The time this sizing material forming requirement size and thickness by having the thin layer of graphite cement; And before the high pressure compression moulding of about 100～200kgf/fcm2 a plurality of thin layers of lamination, solidify then and make.The electrically conductive graphite cement boards of this invention can be used for various uses, for example building decorative plate, electric charge anti-static plate and hot-plate.
In the prior art, make in the electroconductive cement process, need to add a large amount of graphite or other conductive filler materials and just can reach reasonable conductive effect, so just cause problems such as conductivity instability, electroconductive cement and product strength thereof are low, have a strong impact on the performance of electroconductive cement and goods thereof.
Summary of the invention
The purpose of this invention is to provide the electroconductive cement that a kind of production method is simple, extrudate density is big, volume specific resistance is little, physical strength is big, use range is wide, cost is low, and electroconductive cement involved in the present invention, raw material sources are extensive, and facility investment is few, very easily promote the use of.
Technical scheme provided by the invention is such: a kind of electroconductive cement, comprise following weight part proportioning: 100 parts of cement, 50～300 parts in sand, 1～30 part in graphite and water, wherein, the mass ratio of the consumption summation of the consumption of water and above-mentioned cement, sand, graphite is 0.3: 1～0.35: 1.
Above-mentioned graphite is the nano-graphite microplate.
The consumption of above-mentioned sand is 100～250 weight parts.
The consumption of above-mentioned graphite is 3～20 weight parts.
The thickness of above-mentioned nano-graphite microplate is less than 100nm.
The thickness of above-mentioned nano-graphite microplate is 10～80nm.
The diameter of above-mentioned nano-graphite microplate is less than 30 μ m.
The diameter of above-mentioned nano-graphite microplate is 0.2～20 μ m.
A kind of preparation method of electroconductive cement, realize by following scheme:
1) prepare raw material: cement 100 weight parts, sand 50～300 weight parts, graphite 1～30 weight part and water, wherein, the mass ratio of the consumption summation of the consumption of water and above-mentioned cement, sand, graphite is 0.3: 1～0.35: 1;
2) pour above-mentioned cement, sand and graphite mixing into stirrer, add water then and stir; Or earlier above-mentioned graphite is mixed with above-mentioned cement and sand with the water mixing and stirring again and stir;
3) casting;
4) maintenance more than 24 hours or 24 hours under room temperature, 90%～95% humidity condition.
Above-mentioned graphite is the nano-graphite microplate.
The consumption of above-mentioned sand is 100～250 weight parts.
The consumption of above-mentioned graphite is 3～20 weight parts.
The thickness of above-mentioned nano-graphite microplate is 10～80nm.
The diameter of above-mentioned nano-graphite microplate is 0.2～20 μ m.
After adopting such scheme, because the graphite that the present invention adopts is the nano-graphite microplate, nano-graphite microplate thickness is less than 100nm, diameter is 0.2～20 μ m, the nano-graphite microplate is more cheap than carbon fiber, manufacture craft is simple, and is better dispersed during with cementitious composite, is difficult for reuniting; The nano-graphite microplate is bigger than common graphite radius-thickness ratio, is easier to form conductive network with cementitious composite time ratio.Electroconductive cement of the present invention adopts the nano-graphite microplate, and volume is few, under the prerequisite of proof strength, has improved conductivity.
Description of drawings
Fig. 1 is the SEM figure of nano-graphite microplate.
Fig. 2 is the Changing Pattern of resistivity of material with common graphite (2000 order) volume.
Fig. 3 is the Changing Pattern of resistivity of material with nano-graphite microplate volume.
Embodiment
Used nano-graphite microplate among the present invention, be according to document [Guohua Chen, et al.Preparation and characterization of graphite nanosheets fromultrasonic powdering technique[J] .Carbon, 2004,42 (4): 753-759.] be made, expanded graphite is soaked 12h in 65: 35 aqueous ethanolic solution of volume ratio, ultrasonication some hrs several times in ultrasonic cleaner make the nano-graphite microplate then.The nano-graphite powder is as a kind of novel conductive filler, be expected to substitute electro-conductive materials such as his carbon black of conduction, conductive metal powder, carbon nanotube, used widely in fields such as conductive plastics, electromagnetic shielding material, absorbing material, electric heating material, lubricants.
The thickness of used nano-graphite microplate is less than 100nm among the present invention, and optimum thickness then is 10～80nm, and the diameter of nano-graphite microplate is less than 30 μ m, and optimum diameter then is 0.2～20 μ m.
Used cement is common 325R/425R silicate cement, aluminate cement among the present invention.
Embodiment 1:
A kind of electroconductive cement of the present invention is made up of the component of following weight part: cement 100 weight parts, sand 50 weight parts, nano-graphite microplate 3 weight parts, water 50 weight parts and water reducer 1.5 weight parts.
The preparation method of a kind of electroconductive cement of the present invention, realized by following scheme:
(1) takes by weighing cement 100 weight parts, sand 50 weight parts, nano-graphite microplate 3 weight parts;
(2) cement, sand and nano-graphite microplate are mixed, add entry 50 weight parts and water reducer 1.5 weight parts, and stir 3min;
(3) casting;
(4) maintenance was condensed in 24 hours under room temperature, 90% humidity condition, tested its every performance.
Embodiment 2:
A kind of electroconductive cement of the present invention is made up of the component of following weight part: cement 100 weight parts, sand 100 weight parts, nano-graphite microplate 8 weight parts, water 65 weight parts and water reducer 1.5 weight parts.
The preparation method of a kind of electroconductive cement of the present invention, realized by following scheme:
(1) takes by weighing cement 100 weight parts, sand 100 weight parts, nano-graphite microplate 8 weight parts;
(2) cement, sand and nano-graphite microplate are mixed, add entry 65 weight parts and water reducer 1.5 weight parts, and stir 3min;
(3) casting;
(4) maintenance was condensed in 24 hours under room temperature, 90% humidity condition, tested its every performance.
Embodiment 3:
A kind of electroconductive cement of the present invention is made up of the component of following weight part: cement 100 weight parts, sand 150 weight parts, nano-graphite microplate 15 weight parts, water 80 weight parts and water reducer 1.5 weight parts.
The preparation method of a kind of electroconductive cement of the present invention, realized by following scheme:
(1) takes by weighing cement 100 weight parts, sand 150 weight parts, nano-graphite microplate 15 weight parts;
(2) cement, sand and nano-graphite microplate are mixed, add entry 80 weight parts and water reducer 1.5 weight parts, and stir 3min;
(3) casting;
(4) maintenance was condensed in 24 hours under room temperature, 90% humidity condition, tested its every performance.
Embodiment 4:
A kind of electroconductive cement of the present invention is made up of the component of following weight part: cement 100 weight parts, sand 200 weight parts, nano-graphite microplate 20 weight parts, water 100 weight parts and water reducer 1.5 weight parts.
The preparation method of a kind of electroconductive cement of the present invention, realized by following scheme:
(1) takes by weighing cement 100 weight parts, sand 200 weight parts, nano-graphite microplate 20 weight parts;
(2) cement, sand and nano-graphite microplate are mixed, add entry 100 weight parts and water reducer 1.5 weight parts, and stir 3min;
(3) casting;
(4) maintenance was condensed in 24 hours under room temperature, 90% humidity condition, tested its every performance.
Embodiment 5:
A kind of electroconductive cement of the present invention is made up of the component of following weight part: cement 100 weight parts, sand 250 weight parts, nano-graphite microplate 25 weight parts, water 110 weight parts and water reducer 1.5 weight parts.
The preparation method of a kind of electroconductive cement of the present invention, realized by following scheme:
(1) takes by weighing cement 100 weight parts, sand 250 weight parts, nano-graphite microplate 25 weight parts;
(2) cement, sand and nano-graphite microplate are mixed, add entry 110 weight parts and water reducer 1.5 weight parts, and stir 3min;
(3) casting;
(4) maintenance was condensed in 24 hours under room temperature, 90% humidity condition, tested its every performance.
Embodiment 6:
A kind of electroconductive cement of the present invention is made up of the component of following weight part: cement 100 weight parts, sand 50 weight parts, nano-graphite microplate 5 weight parts, water 50 weight parts and water reducer 1.5 weight parts.
The preparation method of a kind of electroconductive cement of the present invention, realized by following scheme:
(1) takes by weighing nano-graphite microplate 5 weight parts, add water 50 weight parts and stir;
(2) take by weighing 100 parts of cement again, sand 50 weight parts are added cement and sand in the nano-graphite microplate that stirs;
(3) add 1.5 weight part water reducers then and stir 3min;
(4) casting;
(5) maintenance was condensed in 24 hours under room temperature, 90% humidity condition, tested its every performance.
Embodiment 7:
A kind of electroconductive cement of the present invention is made up of the component of following weight part: cement 100 weight parts, sand 150 weight parts, nano-graphite microplate 15 weight parts, water 80 weight parts and water reducer 1.5 weight parts.
The preparation method of a kind of electroconductive cement of the present invention, realized by following scheme:
(1) takes by weighing nano-graphite microplate 15 weight parts, add water 80 weight parts and stir;
(2) take by weighing cement 100 weight parts again, sand 150 weight parts are added cement and sand in the nano-graphite microplate that stirs;
(3) add 1.5 weight part water reducers then and stir 3min;
(4) casting;
(5) maintenance was condensed in 24 hours under room temperature, 90% humidity condition, tested its every performance.
Embodiment 8:
A kind of electroconductive cement of the present invention is made up of the component of following weight part: cement 100 weight parts, sand 250 weight parts, nano-graphite microplate 25 weight parts, water 110 weight parts and water reducer 1.5 weight parts.
The preparation method of a kind of electroconductive cement of the present invention, realized by following scheme:
(1) takes by weighing nano-graphite microplate 25 weight parts, add water 110 weight parts and stir;
(2) take by weighing cement 100 weight parts again, sand 250 weight parts are added cement and sand in the nano-graphite microplate that stirs;
(3) add 1.5 weight part water reducers then and stir 3min;
(4) casting;
(5) maintenance was condensed in 24 hours under room temperature, 90% humidity condition, tested its every performance.
Claims (14)
1, a kind of electroconductive cement is characterized in that: comprise following weight part proportioning: 100 parts of cement, 50～300 parts in sand, 1～30 part in graphite and water, wherein, the mass ratio of the consumption summation of the consumption of water and above-mentioned cement, sand, graphite is 0.3: 1～0.35: 1.
2, a kind of electroconductive cement according to claim 1 is characterized in that: above-mentioned graphite is the nano-graphite microplate.
3, a kind of electroconductive cement according to claim 1 is characterized in that: the consumption of above-mentioned sand is 100～250 weight parts.
4, a kind of electroconductive cement according to claim 1 is characterized in that: the consumption of above-mentioned graphite is 3～20 weight parts.
5, a kind of electroconductive cement according to claim 2, it is characterized in that: the thickness of above-mentioned nano-graphite microplate is less than 100nm.
6, a kind of electroconductive cement according to claim 5 is characterized in that: the thickness of above-mentioned nano-graphite microplate is 10～80nm.
7, a kind of electroconductive cement according to claim 2 is characterized in that: the diameter of above-mentioned nano-graphite microplate is less than 30 μ m.
8, a kind of electroconductive cement according to claim 7 is characterized in that: the diameter of above-mentioned nano-graphite microplate is 0.2～20 μ m.
9, a kind of preparation method of electroconductive cement is characterized in that: realize by following scheme:
1) prepare raw material: cement 100 weight parts, sand 50～300 weight parts, graphite 1～30 weight part and water, wherein, the mass ratio of the consumption summation of the consumption of water and above-mentioned cement, sand, graphite is 0.3: 1～0.35: 1;
2) pour above-mentioned cement, sand and graphite mixing into stirrer, add water then and stir; Or earlier above-mentioned graphite is mixed with above-mentioned cement and sand with the water mixing and stirring again and stir;
3) casting;
4) maintenance more than 24 hours or 24 hours under room temperature, 90%～95% humidity condition.
10, the preparation method of a kind of electroconductive cement according to claim 9 is characterized in that: above-mentioned graphite is the nano-graphite microplate.
11, the preparation method of a kind of electroconductive cement according to claim 9 is characterized in that: the consumption of above-mentioned sand is 100～250 weight parts.
12, the preparation method of a kind of electroconductive cement according to claim 9 is characterized in that: the consumption of above-mentioned graphite is 3～20 weight parts.
13, the preparation method of a kind of electroconductive cement according to claim 10 is characterized in that: the thickness of above-mentioned nano-graphite microplate is 10～80nm.
14, the preparation method of a kind of electroconductive cement according to claim 10 is characterized in that: the diameter of above-mentioned nano-graphite microplate is 0.2～20 μ m.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229489A (en) * | 2011-04-26 | 2011-11-02 | 北京工业大学 | Graphite-gypsum-based wave-absorbing composite material and preparation method thereof |
| EP2430878A1 (en) * | 2009-05-11 | 2012-03-21 | Wilhelm Zimmerer | Electrical panel heating device and method and material for the production thereof |
| RU2447036C1 (en) * | 2010-10-28 | 2012-04-10 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования Сибирский федеральный университет (СФУ) | Composition for producing construction materials |
| CN103130466A (en) * | 2013-03-25 | 2013-06-05 | 中国科学院上海硅酸盐研究所 | Graphene/cement matrix composite material and preparation method thereof |
| CN103130436A (en) * | 2013-03-25 | 2013-06-05 | 中国科学院上海硅酸盐研究所 | Oxidized graphene and graphene reinforced cement based composite material and preparation method thereof |
| CN104277356A (en) * | 2014-09-04 | 2015-01-14 | 苏州市景荣科技有限公司 | Antistatic PVC foamed sole material and manufacturing method thereof |
| CN104556897A (en) * | 2014-12-18 | 2015-04-29 | 广东电网有限责任公司茂名供电局 | Colored conductive concrete and preparation method thereof |
| CN105367007A (en) * | 2015-12-15 | 2016-03-02 | 湖北大学 | Conductive concrete doped with graphite and polyaniline and preparation method of conductive concrete |
| CN105565737A (en) * | 2015-12-15 | 2016-05-11 | 湖北大学 | Conducting concrete using polyaniline as conducting phase and preparation method thereof |
| CN105693163A (en) * | 2016-01-21 | 2016-06-22 | 湖北大学 | Conductive concrete with high-conductivity polyhiophene as conductive component and preparing method of conductive concrete |
| CN105801076A (en) * | 2016-02-15 | 2016-07-27 | 云南科威液态金属谷研发有限公司 | Electroconductive cement internally doped with low-melting-point alloy and preparation method of electroconductive cement |
| CN107555817A (en) * | 2017-07-17 | 2018-01-09 | 湖南省雷博盾科技有限公司 | A kind of graphene denatured conductive cement and preparation method thereof |
| CN109180092A (en) * | 2018-10-23 | 2019-01-11 | 安徽省安达节能科技有限公司 | A kind of anti-static non-ignition earth material and preparation method thereof |
| CN109399979A (en) * | 2018-11-21 | 2019-03-01 | 华侨大学 | A kind of preparation method of the thermally conductive cement of foam conductive |
| CN110590271A (en) * | 2018-06-12 | 2019-12-20 | 中国石油化工集团公司 | High-thermal-conductivity cement slurry for geothermal well and preparation method thereof |
| US11919809B2 (en) | 2018-03-16 | 2024-03-05 | Concrene Limited | Graphene reinforced concrete |
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|---|---|---|---|---|
| EP2430878A1 (en) * | 2009-05-11 | 2012-03-21 | Wilhelm Zimmerer | Electrical panel heating device and method and material for the production thereof |
| EP2430878B1 (en) * | 2009-05-11 | 2022-07-20 | Wilhelm Zimmerer | Electrical panel heating device and method and material for the production thereof |
| RU2447036C1 (en) * | 2010-10-28 | 2012-04-10 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования Сибирский федеральный университет (СФУ) | Composition for producing construction materials |
| CN102229489A (en) * | 2011-04-26 | 2011-11-02 | 北京工业大学 | Graphite-gypsum-based wave-absorbing composite material and preparation method thereof |
| CN103130466A (en) * | 2013-03-25 | 2013-06-05 | 中国科学院上海硅酸盐研究所 | Graphene/cement matrix composite material and preparation method thereof |
| CN103130436A (en) * | 2013-03-25 | 2013-06-05 | 中国科学院上海硅酸盐研究所 | Oxidized graphene and graphene reinforced cement based composite material and preparation method thereof |
| CN103130466B (en) * | 2013-03-25 | 2015-03-18 | 中国科学院上海硅酸盐研究所 | Graphene/cement matrix composite material and preparation method thereof |
| CN103130436B (en) * | 2013-03-25 | 2015-03-18 | 中国科学院上海硅酸盐研究所 | Oxidized graphene and graphene reinforced cement based composite material and preparation method thereof |
| CN104277356A (en) * | 2014-09-04 | 2015-01-14 | 苏州市景荣科技有限公司 | Antistatic PVC foamed sole material and manufacturing method thereof |
| CN104556897A (en) * | 2014-12-18 | 2015-04-29 | 广东电网有限责任公司茂名供电局 | Colored conductive concrete and preparation method thereof |
| CN105565737A (en) * | 2015-12-15 | 2016-05-11 | 湖北大学 | Conducting concrete using polyaniline as conducting phase and preparation method thereof |
| CN105367007A (en) * | 2015-12-15 | 2016-03-02 | 湖北大学 | Conductive concrete doped with graphite and polyaniline and preparation method of conductive concrete |
| CN105693163A (en) * | 2016-01-21 | 2016-06-22 | 湖北大学 | Conductive concrete with high-conductivity polyhiophene as conductive component and preparing method of conductive concrete |
| CN105801076A (en) * | 2016-02-15 | 2016-07-27 | 云南科威液态金属谷研发有限公司 | Electroconductive cement internally doped with low-melting-point alloy and preparation method of electroconductive cement |
| CN105801076B (en) * | 2016-02-15 | 2017-11-10 | 云南科威液态金属谷研发有限公司 | Electroconductive cement of low-melting alloy and preparation method thereof is mixed in a kind of |
| CN107555817A (en) * | 2017-07-17 | 2018-01-09 | 湖南省雷博盾科技有限公司 | A kind of graphene denatured conductive cement and preparation method thereof |
| US11919809B2 (en) | 2018-03-16 | 2024-03-05 | Concrene Limited | Graphene reinforced concrete |
| CN110590271A (en) * | 2018-06-12 | 2019-12-20 | 中国石油化工集团公司 | High-thermal-conductivity cement slurry for geothermal well and preparation method thereof |
| CN109180092A (en) * | 2018-10-23 | 2019-01-11 | 安徽省安达节能科技有限公司 | A kind of anti-static non-ignition earth material and preparation method thereof |
| CN109399979A (en) * | 2018-11-21 | 2019-03-01 | 华侨大学 | A kind of preparation method of the thermally conductive cement of foam conductive |
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Application publication date: 20081231 |