CN110342838A - A kind of preparation method and application of high thermal conductivity clinker and its cement products - Google Patents

A kind of preparation method and application of high thermal conductivity clinker and its cement products Download PDF

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Publication number
CN110342838A
CN110342838A CN201910625018.3A CN201910625018A CN110342838A CN 110342838 A CN110342838 A CN 110342838A CN 201910625018 A CN201910625018 A CN 201910625018A CN 110342838 A CN110342838 A CN 110342838A
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clinker
thermal conductivity
high thermal
preparation
graphene oxide
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CN110342838B (en
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叶正茂
景国建
冯浩然
李全亮
王树贤
程新
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University of Jinan
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University of Jinan
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/24Cements from oil shales, residues or waste other than slag
    • C04B7/26Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/36Manufacture of hydraulic cements in general
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/36Manufacture of hydraulic cements in general
    • C04B7/48Clinker treatment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

The invention belongs to cement fabricating technology fields, and in particular to the preparation method and application of a kind of high thermal conductivity clinker and its cement products.It include: to obtain graphene oxide-isopropanol dispersion liquid 1) by graphene oxide ultrasonic disperse into aqueous isopropanol, it is spare;2) clinker powder is added in step 1) graphene oxide-isopropanol dispersion liquid, is stirred continuously, until graphene oxide is all adsorbed onto clinker surface;Then gained wet stock is subjected to feed liquid separation, obtains to surface and is covered with the clinker of graphene oxide;3) the resulting clinker of step 2) is made annealing treatment at a set temperature, removes the functional group in remaining isopropanol and redox graphene, obtained to surface and be covered with the clinker of graphene, is i.e. high thermal conductivity clinker.Method of the invention can be effectively improved the heating conduction of cement products, but can be avoided because be added graphene dispersion agent caused by cement products adaptability the problems such as.

Description

A kind of preparation method and application of high thermal conductivity clinker and its cement products
Technical field
The invention belongs to cement fabricating technology fields, and in particular to a kind of high thermal conductivity clinker and its cement products Preparation method and application.
Background technique
It is only intended to increase understanding of the overall background of the invention for information disclosed in background of invention, without It is existing well known to persons skilled in the art so to be considered as recognizing or imply that information composition has become in any form Technology.
Cement material is one of most widely used construction material in the world.Since nearly threeth century, with cement concrete Extremely critical effect is played in the mankind's activities such as urban transportation construction for the engineering structure of construction material.With the hair of society Exhibition, in terms of people are not limited to intensity to the performance requirement of cement material, functionality has also obtained more and more Concern.The research of high thermal conductivity cement is exactly one of them.In general, the thermal coefficient of cement material is relatively low, this limit It has been made in very various applications.For example, in industrial heat tracing and field of heat exchange, if it is possible to increase substantially the thermally conductive of cement The heat transfer path that coefficient can increase heat transfer area in heat tracing and heat-exchanger rig, establish high-efficient low thermal resistance, reaches raising Heat transfer efficiency, the purpose for reducing energy consumption.In addition, the generally existing thermal cracking of mass concrete is also due to the thermally conductive system of cement Number it is low and caused by, therefore improve cement heating conduction to control concrete thermal cracking also have significant impact.
In general, enhancing the heating conduction of cement by the way of adding heat filling.Carbon black, graphite, iron powder, thermally conductive fibre The substances such as dimension are widely used in improving the thermal conductivity of cement material.But since the thermal coefficient of these materials is lower, it is added to water Its improvement is limited in mud.Meanwhile dispersibility of the heat filling in cement also limits its further application.From Britain Since scholar AndreGeim has found graphene and obtains the Nobel Prize, since graphene has electrical and thermal conductivity, the intensity of superelevation Etc. many excellent performances, the main hot spot of full Material Field research is rapidly become.Graphene is presently found most thin, intensity A kind of maximum, the strongest novel nano-material of conductive and heat-conductive ability.In recent years, many researchs attempt graphene being introduced into cement In sill, improve the hot property of cement-based material using the excellent thermal conductive property of graphene.For example, patent document CN106587847A discloses a kind of graphene-cement base high-heat-conductive composite material and preparation method thereof, first with silane coupled Agent modified graphene improves dispersibility of the graphene in cement using ball milling mixing, comes finally by hot-forming technique Prepare cement material.However, present inventors believe that although this method effectively improves the heating conduction of cement, preparation method There is the adaptability problem with cement matrix in the substances such as cumbersome and addition phenolic resin, dispersing agent, therefore, it is necessary to further How research makes graphene be more efficiently used for improving the thermal conductivity of cement.
Summary of the invention
For above-mentioned problem, the present invention is intended to provide the preparation method of a kind of high thermal conductivity clinker and its cement products And application.Method of the invention can be effectively improved the heating conduction of cement products, while be can be avoided again because graphene is added Caused by dispersing agent the problems such as the adaptability of cement products.
An object of the present disclosure: a kind of preparation method of high thermal conductivity clinker is provided.
Second purpose of the invention: a kind of preparation method of high thermal conductivity cement products is provided.
Third purpose of the present invention: the application of the preparation method of the high thermal conductivity clinker and cement products is provided.
For achieving the above object, the invention discloses following technical proposals:
Firstly, the present invention discloses a kind of preparation method of high thermal conductivity clinker, include the following steps:
(1) by graphene oxide ultrasonic disperse into aqueous isopropanol, graphene oxide-isopropanol dispersion liquid is obtained, it is standby With;
(2) clinker powder is added in step (1) graphene oxide-isopropanol dispersion liquid, is stirred continuously, until Graphene oxide is all adsorbed onto clinker surface;Then gained wet stock is subjected to feed liquid separation, obtains to surface and is covered with oxygen The clinker of graphite alkene;
(3) step (2) resulting clinker is made annealing treatment at a set temperature, remove remaining isopropanol with And the functional group in redox graphene, it obtains to surface and is covered with the clinker of graphene, is i.e. high thermal conductivity clinker.
As further technical solution, in step (1), the piece diameter of the graphene oxide is 0.1-10 μm, rate of oxygen For 20-45%, the number of plies is 1-10 layers.
As further technical solution, in step (1), the ultrasonic power is 300-1800W, frequency 40- 200KHz, ultrasonic time 10-200min.
As further technical solution, in step (1), graphene oxide content is 0.1-1.2mg/ in the dispersion liquid ml。
As further technical solution, in step (2), the clinker includes silicate, aluminate, sulphur aluminic acid Any one in salt, ferrite, phosphate etc..
As further technical solution, in step (2), the clinker powder be can be used to block-like clinker It carries out crumbling method to obtain, such as mechanical lapping, underhand polish.
As further technical solution, in step (2), the partial size of the clinker powder is 300-800 μm.
As further technical solution, in step (2), the graphene oxide-isopropanol dispersion liquid additional amount are as follows: Graphene oxide quality is the 0.5-1.5% of cement clinker quality.
As further technical solution, in step (2), the graphene oxide is all adsorbed onto clinker surface Mark is that the color (faint yellow, high concentration presentation rufous is presented in low concentration) of dispersion liquid disappears.
As further technical solution, in step (2), the implementation of the feed liquid separation includes natural subsidence, mistake Filter etc..
As further technical solution, in step (3), the temperature is 150-350 DEG C, time 3-5h;Preferably In 250 DEG C of annealing 4h.The degree and graphite oxide that annealing temperature restores graphene oxide have very in the form of cement surface Big influence;Research shows that: temperature cannot achieve the thorough reduction of graphene oxide when being lower than 150 DEG C, and graphene oxide Poor thermal conductivity can not play the purpose for promoting cement thermal conductivity;When reaching 350 DEG C or more, the partial oxidation of cement particle surface The carbon skeleton of graphene is destroyed, and leads to the reduction of its heating conduction;Graphene oxide restores most thorough, surface function at 250 DEG C Group's removal is clean, obtained cement excellent thermal conductivity.
The characteristics of preparation method of high thermal conductivity clinker of the present invention, is: by utilizing graphene oxide and water in the solution Adsorptivity between mud clinker realizes the mixed uniformly purpose of the two;It then, on the one hand can be by graphite oxide by annealing Alkene is reduced to the graphene with high thermal conductivity coefficient, while graphene can also be anchored to clinker surface, and enhancing is between the two In conjunction with fastness, help to solve the problems, such as that graphene is adsorbed on surface of material caducous;This is because: the process of annealing In, with fading away for graphene functional group, the atom on clinker surface is intended to fill up the defect of graphene surface, because This, graphene is closely linked with clinker, i.e., graphene is anchored at clinker surface.
Secondly, the present invention discloses a kind of preparation method of high thermal conductivity cement products, comprising: by high thermal conductivity prepared by the present invention Clinker, gypsum and mixing material compounding to get.
As further technical solution, the gypsum is dihydrate gypsum, and volume accounts for high thermal conductivity cement products quality 3-8%.
As further technical solution, the mixing material includes flyash, slag etc., and volume accounts for high thermal conductivity cement system The 10-35% of quality.
As further technical solution, the granularity of the high thermal conductivity cement products is 0.1-80 μm.
Finally, the present invention discloses the preparation method of the high thermal conductivity clinker and its cement products in the field of construction Using.
Compared with prior art, the present invention achieve it is following the utility model has the advantages that
(1) cement products prepared by the present invention has reached the requirement of high-strength highly-conductive hot property, while without any dispersing agent The addition of equal substances, there is no the adaptability problems of additional substance and cement matrix.
(2) graphene oxide is uniformly dispersed in aqueous isopropanol by the present invention by ultrasonic technique, molten with isopropanol Liquid is medium, and by way of physical absorption, graphene oxide can uniformly be attached to the surface of cement clinker particles.
(3) graphene oxide can be restored by annealing, obtains the graphene with high thermal conductivity coefficient.In addition, The boiling point of isopropanol is lower, can volatilize completely in annealing process, and there is no the adaptability problems with cement products.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to exemplary embodiments of the present invention.Such as, used herein, unless the context clearly indicates otherwise, otherwise singular shape Formula is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As previously mentioned, although there are many researchs, and graphene is introduced into cement-based material at present, graphite is utilized The excellent thermal conductive property of alkene improves the hot property of cement-based material, but still there are problems have it is to be solved.Therefore, this hair It is bright to propose the preparation method and application of a kind of high thermal conductivity clinker and its cement products;Now in conjunction with specific embodiment to this Invention is further illustrated.
Embodiment 1
1, a kind of preparation method of high thermal conductivity clinker, includes the following steps:
(1) ordinary portland cement clinker (label PO42.5) is ground to partial size in 300-500 μm of model using disc grinder It is spare in enclosing;
(2) graphene oxide that taking piece diameter is 4-6 μm, rate of oxygen 30%, the number of plies are 1-5 layers, is added into isopropanol In, ultrasonic disperse 30min under conditions of ultrasonic power is 300W, frequency is 200KHz obtains finely dispersed graphite oxide Alkene-isopropanol dispersion liquid, graphene oxide content is 0.1mg/ml, spare;
(3) Portland clinker after grinding in step (1) is slowly added to the graphite oxide that step (2) obtains In alkene-isopropanol dispersion liquid, the time of addition is controlled in 10min, and the graphene oxide quality of the addition is respectively cement The 0.5% of clinker quality and 1%;Then it is mixed by the way of magnetic agitation, mixing speed control is in 200rpm/min, stirring Time is 12h, and graphene oxide has been adsorbed onto clinker surface substantially after the completion of stirring, and the upper surface of dispersion liquid is substantially saturating It is bright;Feed liquid separates by way of filtering again, obtains to surface and is covered with the clinker of graphene oxide;
(4) clinker that the surface that step (3) obtains is covered with graphene oxide is put into drying box, at 150 DEG C Under made annealing treatment, time 4h.The resulting clinker 75g of annealing is taken, dihydrate gypsum 5g, flyash 20g are expert at Ground and mixed 60min is carried out in star mill, carries out screening operation with 200 the polished standard screens after grinding, taking the cement under sieve is height Thermally conductive cement products.
2, performance test:
High thermal conductivity cement products 50g and 25g water manufactured in the present embodiment is taken, is stirred and is formed with net slurry blender, maintenance 28 The measurement of thermal coefficient and thermal diffusion coefficient is carried out after it.Meanwhile only by clinker (without addition graphene in isopropanol) Hot water mud product is made according to above-mentioned step operation, as a control group.Three groups of cement products that test the present embodiment obtains Results of property is as shown in table 1.
Table 1
It was found from the test result that table 1 obtains: after addition graphene, the thermal coefficient and thermal diffusion coefficient of cement are obviously mentioned It is high.With the increase of graphene volume, hot property is also increased accordingly.When graphene volume be 1% when, compared to the control group and Speech, the thermal coefficient of cement improve 41.07%, and thermal diffusion coefficient increases 45.9%.Graphene uniform is dispersed in cement The surface of particle forms good heat conduction network in cement matrix, increases heat transfer in hardened cement stone substrate Speed.Above-mentioned data illustrate that cement products prepared by the present invention has excellent heating conduction.
Embodiment 2
1, a kind of preparation method of high thermal conductivity clinker, includes the following steps:
(1) ordinary portland cement clinker (label PO42.5) is ground to partial size in 300-500 μm of model using disc grinder It is spare in enclosing;
(2) graphene oxide that taking piece diameter is 4-6 μm, rate of oxygen 30%, the number of plies are 1-5 layers, is added into isopropanol In, ultrasonic disperse 30min under conditions of ultrasonic power is 300W, frequency is 200KHz obtains finely dispersed graphite oxide Alkene-isopropanol dispersion liquid, graphene oxide content are 0.1mg/ml;
(3) Portland clinker after grinding in step (1) is slowly added to the graphite oxide that step (2) obtains In alkene-isopropanol dispersion liquid, the time of addition is controlled in 10min, and the graphene oxide quality of addition is cement clinker quality 1%;Then it is mixed by the way of magnetic agitation, mixing speed control is in 200rpm/min, and mixing time is in 12h, stirring Graphene oxide is all adsorbed onto clinker surface, the upper surface substantially transparent of dispersion liquid after the completion.Then pass through filtering Mode must arrive the clinker that surface is covered with graphene oxide;
(4) clinker that the surface that step (3) obtains is covered with graphene oxide is put into drying box, is existed respectively It is made annealing treatment at 150 DEG C, 250 DEG C and 350 DEG C, time 4h.Take the resulting clinker 75g of above-mentioned processing, two water stones Cream 5g, flyash 20g, carry out being fully ground in planetary mills mixing, the time after 60min, grinding with 200 the polished standard screens into Row screening operation, taking the cement under sieve is high thermal conductivity cement products.
2, performance test:
High thermal conductivity cement products 50g and 25g water manufactured in the present embodiment is taken, is stirred and is formed with net slurry blender, maintenance 28 The measurement of thermal coefficient and thermal diffusion coefficient is carried out after it, the results are shown in Table 2.
Table 2
It was found from the test result that table 2 obtains: annealing temperature has apparent shadow to graphene-cement material hot property It rings.Using 250 DEG C of annealing temperature, effect is optimal, followed by 150 DEG C of annealing temperature, hot property it is worst be 350 DEG C Annealing temperature.This is because caused by the degree difference that annealing temperature restores graphene oxide.Graphene oxide is also at 250 DEG C It is former most thorough, very clean, the thermal coefficient height of graphene, so the heating conduction of cement is best of surface functional group removal.And At 350 DEG C, the carbon skeleton of partial oxidation of graphite alkene is destroyed, and heating conduction decreases, thus leads to the hot property of cement Declined.
Embodiment 3
1, a kind of preparation method of high thermal conductivity clinker, includes the following steps:
(1) ordinary portland cement clinker (label PO42.5) is ground to partial size in 500-800 μm of model using disc grinder It is spare in enclosing;
(2) graphene oxide that taking piece diameter is 0.1-4 μm, rate of oxygen 20%, the number of plies are 4-10 layers, is added into isopropyl In alcohol, ultrasonic disperse 200min under conditions of ultrasonic power is 1000W, frequency is 100KHz obtains finely dispersed oxidation Graphene-isopropanol dispersion liquid, graphene oxide content are 1.2mg/ml;
(3) Portland clinker after grinding in step (1) is slowly added to the graphite oxide that step (2) obtains In alkene-isopropanol dispersion liquid, the time of addition is controlled in 10min, and the graphene oxide quality of addition is cement clinker quality 1.5%;Then it is mixed by the way of magnetic agitation, mixing speed is controlled in 250rpm/min, and mixing time is stirred in 12h Graphene oxide is all adsorbed onto clinker surface, the upper surface substantially transparent of dispersion liquid after the completion of mixing.Then pass through filtering Mode must arrive the clinker that surface is covered with graphene oxide;
(4) clinker that the surface that step (3) obtains is covered with graphene oxide is put into drying box, is existed respectively It is made annealing treatment at 250 DEG C, time 3h.Take the resulting clinker 82g of above-mentioned processing, dihydrate gypsum 8g, flyash 10g carries out being fully ground mixing in planetary mills, and the time carries out screening operation with 200 the polished standard screens after 60min, grinding, Taking the cement under sieve is high thermal conductivity cement products.
2, performance test:
High thermal conductivity cement products 50g and 25g water manufactured in the present embodiment is taken, is stirred and is formed with net slurry blender, maintenance 28 The measurement (test group) of thermal coefficient and thermal diffusion coefficient is carried out after it.Meanwhile taking 50g the present embodiment step (3) preparation not Clinker and 25g water by annealing are stirred with net slurry blender and are formed, and carry out thermal coefficient and heat after maintenance 28 days The measurement of diffusion coefficient, as a control group.The results of property for three groups of cement products that test the present embodiment obtains is as shown in table 3.
Table 3
Embodiment 4
1, a kind of preparation method of high thermal conductivity clinker, includes the following steps:
(1) ordinary portland cement clinker (label PO42.5) is ground to partial size in 300-500 μm of model using disc grinder It is spare in enclosing;
(2) graphene oxide that taking piece diameter is 5-10 μm, rate of oxygen 45%, the number of plies are 6-9 layers, is added into isopropanol In, ultrasonic disperse 10min under conditions of ultrasonic power is 1800W, frequency is 40KHz obtains finely dispersed graphite oxide Alkene-isopropanol dispersion liquid, graphene oxide content are 0.8mg/ml;
(3) Portland clinker after grinding in step (1) is slowly added to the graphite oxide that step (2) obtains In alkene-isopropanol dispersion liquid, the time of addition is controlled in 10min, and the graphene oxide quality of addition is cement clinker quality 1.2%;Then it is mixed by the way of magnetic agitation, mixing speed is controlled in 250rpm/min, and mixing time is stirred in 12h Graphene oxide is all adsorbed onto clinker surface, the upper surface substantially transparent of dispersion liquid after the completion of mixing.Then pass through filtering Mode must arrive the clinker that surface is covered with graphene oxide;
(4) clinker that the surface that step (3) obtains is covered with graphene oxide is put into drying box, is existed respectively It is made annealing treatment at 250 DEG C, time 5h.Take the resulting clinker 62g of above-mentioned processing, dihydrate gypsum 3g, flyash 35g carries out being fully ground mixing in planetary mills, and the time carries out screening operation with 200 the polished standard screens after 60min, grinding, Taking the cement under sieve is high thermal conductivity cement products.
2, performance test:
High thermal conductivity cement products 50g and 25g water manufactured in the present embodiment is taken, is stirred and is formed with net slurry blender, maintenance 28 The measurement (test group) of thermal coefficient and thermal diffusion coefficient is carried out after it.Meanwhile taking 50g the present embodiment step (3) preparation not Clinker and 25g water by annealing are stirred with net slurry blender and are formed, and carry out thermal coefficient and heat after maintenance 28 days The measurement of diffusion coefficient, as a control group.The results of property for three groups of cement products that test the present embodiment obtains is as shown in table 4.
Table 4
From the test result of table 3 and 4 it can be seen that annealing has apparent influence to the thermally conductive clinker of preparation, After the annealing by different time, the heating conduction of cement is significantly improved, this is because stone can will be aoxidized by crossing annealing Black alkene is reduced to the graphene with high thermal conductivity coefficient, to improve the heating conduction of cement products.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of preparation method of high thermal conductivity clinker, which comprises the steps of:
(1) by graphene oxide ultrasonic disperse into aqueous isopropanol, graphene oxide-isopropanol dispersion liquid is obtained, it is spare;
(2) clinker powder is added in step (1) graphene oxide-isopropanol dispersion liquid, is stirred continuously, until oxidation Graphene is all adsorbed onto clinker surface;Then gained wet stock is subjected to feed liquid separation, obtains to surface and is covered with oxidation stone The clinker of black alkene;
(3) step (2) resulting clinker is made annealing treatment at a set temperature, remove remaining isopropanol and gone back Functional group in former graphene oxide obtains to surface and is covered with the clinker of graphene, is i.e. high thermal conductivity clinker.
2. the preparation method of high thermal conductivity clinker as described in claim 1, which is characterized in that in step (1), the oxidation The piece diameter of graphene is 0.1-10 μm, rate of oxygen 20-45%, and the number of plies is 1-10 layers.
3. the preparation method of high thermal conductivity clinker as described in claim 1, which is characterized in that in step (1), the ultrasound Power is 300-1800W, frequency 40-200KHz, ultrasonic time 10-200min.
4. the preparation method of high thermal conductivity clinker as described in claim 1, which is characterized in that in step (1), the dispersion Graphene oxide content is 0.1-1.2mg/ml in liquid.
5. the preparation method of high thermal conductivity clinker as described in claim 1, which is characterized in that in step (2), the cement Clinker includes any one in silicate, aluminate, aluminium sulfate, ferrite, phosphate etc.;
Preferably, in step (2), the clinker powder, which can be used, obtains block-like clinker progress crumbling method, For example, mechanical lapping, underhand polish.
6. the preparation method of high thermal conductivity clinker as described in claim 1, which is characterized in that in step (2), the cement The partial size of clinker powder is 300-800 μm;
Preferably, in step (2), the graphene oxide be all adsorbed onto clinker surface mark be dispersion liquid color It disappears;
Preferably, in step (2), the implementation of the feed liquid separation includes natural subsidence or filtering.
7. the preparation method of high thermal conductivity clinker as described in claim 1, which is characterized in that in step (3), the temperature It is 150-350 DEG C, time 3-5h;Preferably in 250 DEG C of annealing 4h.
8. a kind of preparation method of high thermal conductivity cement products characterized by comprising will be described in any one of claims 1-6 Method preparation high thermal conductivity clinker, gypsum and mixing material compounding to get.
9. the preparation method of high thermal conductivity cement products as claimed in claim 7, which is characterized in that the gypsum is two water stones Cream, volume account for the 3-8% of high thermal conductivity cement products quality;
Preferably, the mixing material includes flyash, any one or two kinds in slag, and volume accounts for high thermal conductivity cement products The 10-35% of quality;
Preferably, the granularity of the high thermal conductivity cement products is 0.1-80 μm.
10. such as the preparation method of the described in any item high thermal conductivity clinkers of claim 1-7 and/or such as claim 8 or 9 institutes The application of the preparation method for the high thermal conductivity cement products stated in the field of construction.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111499300A (en) * 2020-04-23 2020-08-07 东南大学 Energy-saving heat-conducting composite material and preparation method and application thereof
CN111847927A (en) * 2020-07-23 2020-10-30 湖州南浔兴云建材有限公司 Preparation method of cement clinker taking waste building blocks as main raw materials

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9208920B2 (en) * 2012-12-05 2015-12-08 Nanotek Instruments, Inc. Unitary graphene matrix composites containing carbon or graphite fillers
CN105895740A (en) * 2016-05-14 2016-08-24 上海大学 Fabrication method of graphene-gold composite electrode for diamond radiation detector
CN106587847A (en) * 2016-12-19 2017-04-26 盐城工学院 Graphene-cement-based high-thermal-conductivity composite material and preparation method thereof
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
CN108658615A (en) * 2018-06-14 2018-10-16 华南理工大学 A kind of graphene-based laminated film of high heat conduction and preparation method thereof
CN108793792A (en) * 2017-04-27 2018-11-13 江苏苏博特新材料股份有限公司 Toughening enhances cement and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9208920B2 (en) * 2012-12-05 2015-12-08 Nanotek Instruments, Inc. Unitary graphene matrix composites containing carbon or graphite fillers
CN105895740A (en) * 2016-05-14 2016-08-24 上海大学 Fabrication method of graphene-gold composite electrode for diamond radiation detector
CN106587847A (en) * 2016-12-19 2017-04-26 盐城工学院 Graphene-cement-based high-thermal-conductivity composite material and preparation method thereof
CN108793792A (en) * 2017-04-27 2018-11-13 江苏苏博特新材料股份有限公司 Toughening enhances cement and preparation method thereof
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
CN108658615A (en) * 2018-06-14 2018-10-16 华南理工大学 A kind of graphene-based laminated film of high heat conduction and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111499300A (en) * 2020-04-23 2020-08-07 东南大学 Energy-saving heat-conducting composite material and preparation method and application thereof
CN111499300B (en) * 2020-04-23 2022-07-01 东南大学 Energy-saving heat-conducting composite material and preparation method and application thereof
CN111847927A (en) * 2020-07-23 2020-10-30 湖州南浔兴云建材有限公司 Preparation method of cement clinker taking waste building blocks as main raw materials

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