CN112794318A - Pipeline lining based on three-dimensional graphene material and preparation method and application thereof - Google Patents
Pipeline lining based on three-dimensional graphene material and preparation method and application thereof Download PDFInfo
- Publication number
- CN112794318A CN112794318A CN202110122054.5A CN202110122054A CN112794318A CN 112794318 A CN112794318 A CN 112794318A CN 202110122054 A CN202110122054 A CN 202110122054A CN 112794318 A CN112794318 A CN 112794318A
- Authority
- CN
- China
- Prior art keywords
- dimensional graphene
- lining
- cement
- pipeline
- graphene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/06—Coatings characterised by the materials used by cement, concrete, or the like
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Nanotechnology (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Ceramic Products (AREA)
Abstract
A preparation method of three-dimensional graphene cement slurry comprises the following steps: dispersing graphite oxide powder in water to obtain a graphene oxide dispersion liquid; closing and heating the graphene oxide dispersion liquid to obtain three-dimensional graphene; dispersing three-dimensional graphene into water to obtain a three-dimensional graphene dispersion liquid; and mixing the three-dimensional graphene dispersion liquid with cement paste to finish the preparation of the three-dimensional graphene cement paste. According to the invention, the pipeline lining is prepared by using the three-dimensional graphene cement paste, based on the characteristic that the three-dimensional graphene and a cement hydration product are mutually penetrated, the cement hydration is promoted, the content and the crystallinity of calcium hydroxide in the cement are improved, the release of substances in the lining into water is effectively reduced, and the pipeline lining has stronger leaching resistance, so that the corrosion resistance of the lining is enhanced, and the pipeline lining has a wide application prospect in the field of municipal engineering tap water transmission and distribution.
Description
Technical Field
The invention belongs to the field of municipal engineering research, particularly relates to a cement lining for a water supply pipeline and a preparation method thereof, and particularly relates to a pipeline lining based on a three-dimensional graphene material and a preparation method and application thereof.
Background
The cement lining pipeline occupies an important position in the water supply field, but the traditional cement lining has the problems of poor corrosion resistance and water quality deterioration caused by lining material leaching, and the inhibition of cement corrosion of the water supply pipeline has important significance for ensuring the water quality of drinking water. Graphene is a carbon nanomaterial with atomic layer thickness and hexagonal honeycomb arrangement formed by hybridization of sp2 carbon atoms, and has high specific surface area and excellent electrical properties, so that the graphene is widely applied to the fields of environment and energy. However, how to apply graphene materials to water supply pipe to improve the stability of the lining has not been reported.
Disclosure of Invention
In view of the above, one of the main objectives of the present invention is to provide a pipeline lining based on three-dimensional graphene material, and a preparation method and an application thereof, so as to at least partially solve at least one of the above technical problems.
In order to achieve the above object, as an aspect of the present invention, there is provided a method for preparing three-dimensional graphene cement slurry, including:
(1) dispersing graphite oxide powder in water to obtain a graphene oxide dispersion liquid;
(2) closing and heating the graphene oxide dispersion liquid to obtain three-dimensional graphene;
(3) dispersing the three-dimensional graphene into water to obtain a three-dimensional graphene dispersion liquid;
(4) and mixing the three-dimensional graphene dispersion liquid with cement paste to finish the preparation of the three-dimensional graphene cement paste.
As another aspect of the invention, the three-dimensional graphene cement paste prepared by the preparation method is also provided.
As another aspect of the present invention, there is also provided a method for preparing a pipeline lining based on a three-dimensional graphene material, including:
coating the three-dimensional graphene cement paste on the inner wall of the pipeline;
and maintaining the pipeline and coating the three-dimensional graphene cement paste on the inner wall of the pipeline to finish the preparation of the pipeline lining.
As another aspect of the invention, the pipeline lining based on the three-dimensional graphene material prepared by the preparation method is also provided.
Finally, as a further aspect of the invention, there is also provided the use of a three-dimensional graphene material based pipe liner as described above in the field of municipal engineering.
Based on the technical scheme, compared with the prior art, the pipeline lining based on the three-dimensional graphene material, and the preparation method and the application thereof have at least one of the following effects:
1. according to the invention, the three-dimensional graphene is doped in the cement lining, the three-dimensional graphene and the cement hydration product are mutually penetrated, the cement hydration is promoted, the content and the crystallinity of calcium hydroxide in the cement are improved, and compared with the cement lining without the three-dimensional graphene, the mass fraction of the calcium hydroxide in the pipeline lining based on the three-dimensional graphene material is improved by more than or equal to 1.5%; thereby better maintaining the passivation state of the inner wall of the metal pipeline and better protecting the inner wall of the metal pipeline;
2. in the hydration process of the cement, hydration products of the cement are inserted in the three-dimensional graphene network, and due to the stronger surface complexation and electrostatic adsorption effects of the three-dimensional graphene on calcium ions in the cement, the release of the calcium ions in the lining into water can be greatly slowed down, the release of substances in the lining into the water is effectively reduced, and the cement has stronger leaching resistance, compared with the traditional cement lining, when the pipeline lining based on the three-dimensional graphene material is soaked in 180d, the TDS (total dissolved solids) release amount is reduced by more than or equal to 15% compared with the cement lining without the three-dimensional graphene, the calcium ion release amount is reduced by more than or equal to 15% compared with the cement lining without the three-dimensional graphene, and the pH value of effluent is reduced by 0.04-0.2 compared with the cement lining without the three-dimensional graphene, so that the corrosion resistance of the lining is enhanced;
3. the preparation method is simple and has wide application prospect in the field of municipal engineering tap water transmission and distribution.
Drawings
Fig. 1 is a flowchart of a preparation method of three-dimensional graphene cement slurry in this embodiment;
fig. 2 is a schematic diagram of the cement pipeline lining and the three-dimensional graphene cement pipeline lining releasing amount of calcium ions with time during the soaking process in the embodiment;
fig. 3 is a schematic diagram showing the change of the TDS release amount of the cement pipeline lining and the three-dimensional graphene cement pipeline lining in the soaking process with time in the embodiment;
fig. 4 is a schematic diagram of the change of the pH value of the effluent water with time during the soaking process of the cement pipeline lining and the three-dimensional graphene cement pipeline lining in the present embodiment.
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
In some embodiments of the present invention, a preparation method of three-dimensional graphene cement slurry is disclosed, as shown in fig. 1, including:
(1) dispersing graphite oxide powder in water to obtain a graphene oxide dispersion liquid;
(2) closing and heating the graphene oxide dispersion liquid to obtain three-dimensional graphene;
(3) dispersing the three-dimensional graphene into water to obtain a three-dimensional graphene dispersion liquid;
(4) and mixing the three-dimensional graphene dispersion liquid with cement paste to finish the preparation of the three-dimensional graphene cement paste.
In some embodiments of the present invention, the substrate is made of a material including any one of sapphire, silicon, gallium nitride, and silicon carbide; in the step (1), the concentration of the graphite oxide powder in the graphene oxide dispersion liquid is 1-20 mg/mL;
in the step (2), the temperature of the closed heating is 80-400 ℃;
in the step (2), the closed heating time is 6-48 h;
in the step (3), the concentration of the three-dimensional graphene in the three-dimensional graphene dispersion liquid is 1 to 100 mg/mL.
In some embodiments of the invention, in step (4), the preparation material of the cement slurry comprises portland cement or ordinary portland cement;
in some embodiments of the invention, in the step (4), the mass ratio of the three-dimensional graphene to the three-dimensional graphene cement paste is 0.01% to 1%;
in some embodiments of the invention, in the step (4), the water cement ratio of the three-dimensional graphene cement paste is 0.3 to 0.5.
In some embodiments of the invention, the three-dimensional graphene cement paste prepared according to the preparation method is also disclosed.
In some embodiments of the present invention, a method for preparing a three-dimensional graphene material-based pipe liner is also disclosed, comprising:
coating the three-dimensional graphene cement paste on the inner wall of the pipeline;
and maintaining the pipeline and coating the three-dimensional graphene cement paste on the inner wall of the pipeline to finish the preparation of the pipeline lining.
In some embodiments of the invention, the lining is applied by a method comprising centrifugal lining, mechanical spraying, or hand lining.
In some embodiments of the invention, the curing method comprises natural curing or steam curing;
wherein, when the curing method is a steam curing method,
the temperature of the steam curing method is 40 to 80 ℃;
the steam curing time is 3 to 10 hours.
In some embodiments of the invention, the pipeline lining based on the three-dimensional graphene material prepared by the preparation method is also disclosed.
In some embodiments of the present invention, during a 180 day deionized water soak,
the pH value of effluent water of the three-dimensional graphene water supply pipeline corrosion-resistant cement lining in the soaking process is 10.64-11.56;
the release amount of calcium ions in the corrosion-resistant cement lining of the three-dimensional graphene water supply pipeline in the soaking process is 1950-2300 mu g/cm2；
The release amount of soluble solids in the soaking process of the three-dimensional graphene water supply pipeline corrosion-resistant cement lining is11000 to 12000 mu g/cm2；
The mass fraction of the calcium hydroxide of the three-dimensional graphene water supply pipeline anti-corrosion cement lining in the pipeline lining is 10-11%.
In some embodiments of the invention, the application of the pipeline lining based on the three-dimensional graphene material in the municipal engineering field is further disclosed.
Different from the traditional cement mortar lining, the invention firstly dopes a small amount of three-dimensional graphene in the cement lining, and the doping of the three-dimensional graphene can promote the hydration of cement, improve the content and the crystallinity of calcium hydroxide in the cement and be beneficial to better maintaining the passivation state of the inner wall of the metal pipeline. In addition, hydration products of the cement are inserted into the three-dimensional graphene network in the hydration process of the cement, and due to the stronger surface complexing and electrostatic adsorption effects of the three-dimensional graphene on calcium ions in the cement, the release of the calcium ions in the lining to water can be greatly slowed down, the corrosion resistance of the cement lining is enhanced, and the cement lining has a wide application prospect in the field of municipal engineering tap water transmission and distribution.
Specifically, one embodiment of the invention discloses a preparation method of a three-dimensional graphene anti-corrosion cement lining for a water supply pipeline (namely a preparation method of a pipeline lining based on a three-dimensional graphene material), which comprises the following steps:
(1) dispersing graphite oxide powder in water;
(2) closing and heating the dispersed liquid obtained in the step (1);
(3) ultrasonically dispersing the three-dimensional graphene obtained in the step (2) into water;
(4) mixing the dispersion liquid obtained in the step (3) with cement paste to obtain three-dimensional graphene cement paste;
(5) coating the three-dimensional graphene cement paste obtained in the step (4) on the inner wall of the pipeline;
(6) and (4) maintaining the pipeline coated with the lining obtained in the step (5), and obtaining the three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely the pipeline lining based on the three-dimensional graphene material) after the maintenance is finished.
Wherein, the concentration of the graphite oxide powder in the step (1) is 1 to 20mg/ml, preferably 1 to 10mg/ml, and more preferably 5 mg/ml.
Wherein the closed heating temperature in the step (2) is, for example, 80 ℃ to 400 ℃, preferably 100 ℃ to 200 ℃, and more preferably 150 ℃; the heating time is, for example, 6 to 48 hours, preferably 10 to 20 hours, and more preferably 12 hours.
Wherein the closed heating in step (2) is performed in a polytetrafluoroethylene reaction vessel, for example.
Wherein the concentration of the three-dimensional graphene in the three-dimensional graphene dispersion liquid in the step (3) is 1-100 mg/mL.
Wherein, the preparation material of the cement paste in the step (4) comprises Portland cement or ordinary Portland cement;
wherein the portland cement is a hydraulic cementing material prepared by grinding portland cement clinker mainly containing calcium silicate, less than 5 percent of limestone or granulated blast furnace slag and a proper amount of gypsum;
wherein, the ordinary portland cement is a hydraulic cementing material prepared by grinding portland cement clinker, 5 to 20 percent of mixed material and a proper amount of gypsum;
wherein, the material for preparing the cement paste in the step (4) is preferably ordinary portland cement;
wherein the water cement ratio of the cement slurry in the step (4) is, for example, 0.3 to 0.5, preferably 0.3 to 0.4, and more preferably 0.3; the percentage of the three-dimensional graphene in the cement paste is, for example, 0.01 to 1%, preferably 0.01 to 0.1%, and more preferably 0.03%.
Wherein, the lining coating method in the step (5) comprises a centrifugal lining coating method, a mechanical spraying method and a manual lining coating method, and the centrifugal lining coating method is preferred.
Wherein the rotational speed of the lining coating machine in the step (5) is 900 to 1500 r.min-1Preferably 1200 to 1400 r.min-1More preferably 1200 r.min-1。
Wherein, the curing method in the step (6) comprises natural curing and steam curing, and preferably steam curing.
Wherein the steam curing temperature in step (6) is, for example, 40 to 80 ℃, preferably 50 to 60 ℃, and more preferably 55 ℃; the steam curing time is, for example, 3 to 10 hours, preferably 5 to 7 hours, and more preferably 5 hours.
The invention further discloses the three-dimensional graphene anti-corrosion cement lining for the water supply pipeline (namely, the pipeline lining based on the three-dimensional graphene material) prepared by the preparation method. The lining has strong resistance to leaching of substances, e.g., in 180 days of immersion, the TDS release is 11888 μ g/cm2The calcium ion release amount is 2222 mu g/cm, which is reduced by more than or equal to 15 percent compared with the cement lining without adding three-dimensional graphene2The cement lining is reduced by more than or equal to 15 percent compared with the cement lining without the three-dimensional graphene; the pH value of the effluent is 10.7, which is reduced by 0.04 to 0.2 compared with the cement lining without the three-dimensional graphene.
In addition, the lining has a higher calcium hydroxide content, so that the inner wall of the metal pipeline can be better protected, for example, the mass fraction of the calcium hydroxide in the lining is 10.18%, and compared with a cement lining without the three-dimensional graphene, the mass fraction of the calcium hydroxide in the lining is improved by more than or equal to 1.5%.
The invention also discloses application of the three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely, the pipeline lining based on the three-dimensional graphene material) in municipal engineering water supply pipelines in some embodiments.
The technical solution of the present invention is further illustrated by the following specific embodiments in combination with the accompanying drawings. It should be noted that the following specific examples are given by way of illustration only and the scope of the present invention is not limited thereto.
In the following examples, the experimental methods used are all conventional methods unless otherwise specified. In the following examples, materials, reagents and the like used were, unless otherwise specified, either commercially available or self-prepared by a known production method.
Example 1
The three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely, the pipeline lining based on the three-dimensional graphene material) is prepared by the following specific steps:
adding oxidized graphene powder into water, crushing for 15min under the conditions of 25KHz and 1000w by using an ultrasonic cell crusher, then putting the crushed graphene powder into an ultrasonic cleaning machine, and carrying out ultrasonic treatment for 30min under the conditions of 40KHz and 300w, and repeating the steps for 3 times to obtain the oxidized graphene dispersion liquid with the concentration of 5 mg/mL.
And (3) putting the dispersion liquid into a polytetrafluoroethylene-lined stainless steel reaction kettle, heating for 12 hours at the temperature of 150 ℃, and obtaining the three-dimensional graphene solid after the reaction is finished.
Grinding the three-dimensional graphene solid, adding a small amount of water, carrying out ultrasonic treatment for 30min in an ultrasonic cleaning machine under the conditions of 40KHz and 300w, and adding water to enable the concentration of the three-dimensional graphene dispersion liquid to be 5 mg/mL.
P.O 52.5.5 common Portland cement is taken, and three-dimensional graphene dispersion liquid and tap water are added in the stirring process, so that the water-cement ratio of the finally mixed three-dimensional graphene cement paste is 0.3, and the three-dimensional graphene accounts for 0.03 percent of the mass of the three-dimensional graphene cement paste.
Adding the mixed three-dimensional graphene cement paste into a cement lining coating machine for the nodular cast iron pipe at 1200 r.min-1The rotational speed of (2) is centrifugally coated and lined on the inner wall of the DN100 centrifugal nodular cast iron pipe.
And (3) after the lining is coated, standing for 5 hours at room temperature, and then performing steam curing for 5 hours at 55 ℃ to obtain the three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely the pipeline lining based on the three-dimensional graphene material).
Comparative example 1
The three-dimensional graphene is not added in the pipeline lining.
For comparison, comparative example 1 is different from example 1 only in that no three-dimensional graphene is added, and a cement lining to which no three-dimensional graphene is added is prepared under the same water cement ratio and lining curing conditions. The calcium ion release amount of the cement lining (namely, the cement lining without adding the three-dimensional graphene) and the three-dimensional graphene cement lining (namely, the three-dimensional graphene water supply pipeline corrosion-resistant cement lining) in the deionized water soaking process is shown in figure 2, the three-dimensional graphene cement lining can obviously reduce the calcium ion release amount, and the calcium ion release amount is 2222 mug/cm in the 180-day soaking process2Compared with a cement lining without the three-dimensional graphene, the cement lining is reduced by 15.73%.
Cement linings (i.e.Cement lining without adding three-dimensional graphene) and three-dimensional graphene cement lining (i.e. three-dimensional graphene water supply pipeline corrosion-resistant cement lining) in the deionized water soaking process, the TDS release amount is shown in fig. 3, the three-dimensional graphene cement lining can obviously reduce the TDS release amount, and in 180d soaking, the TDS release amount of the three-dimensional graphene cement paste lining is 11888 mug/cm2And the reduction is 18.93 percent compared with the cement lining.
Example 2
The three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely, the pipeline lining based on the three-dimensional graphene material) is prepared by the following specific steps:
adding oxidized graphene powder into water, crushing for 15min under the conditions of 25KHz and 1000w by using an ultrasonic cell crusher, then putting the crushed graphene powder into an ultrasonic cleaning machine, and carrying out ultrasonic treatment for 30min under the conditions of 40KHz and 300w, and repeating the steps for 3 times to obtain the oxidized graphene dispersion liquid with the concentration of 10 mg/mL.
And (3) putting the dispersion liquid into a polytetrafluoroethylene-lined stainless steel reaction kettle, heating for 20 hours at 120 ℃, and obtaining the three-dimensional graphene solid after the reaction is finished.
Grinding the three-dimensional graphene solid, adding a small amount of water, carrying out ultrasonic treatment for 30min in an ultrasonic cleaning machine under the conditions of 40KHz and 300w, and adding water to enable the concentration of the three-dimensional graphene dispersion liquid to be 20 mg/mL.
P.O 52.5.5 ordinary Portland cement is taken, and three-dimensional graphene dispersion liquid and tap water are added in the stirring process, so that the water-cement ratio of the finally mixed cement paste is 0.3, and the three-dimensional graphene accounts for 0.03 percent of the mass of the cement.
Adding the mixed cement into a cement lining machine for ductile cast iron pipes at a speed of 1200 r.min-1The rotational speed of (2) is centrifugally coated and lined on the inner wall of the DN100 centrifugal nodular cast iron pipe.
And (3) after the lining is coated, standing for 5 hours at room temperature, and then performing steam curing for 5 hours at 55 ℃ to obtain the three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely the pipeline lining based on the three-dimensional graphene material).
Comparative example 2
The three-dimensional graphene is not added in the pipeline lining.
For comparison, comparative example 2 is different from example 2 only in that no three-dimensional graphene is added, and a cement lining to which no three-dimensional graphene is added is prepared under the same water cement ratio and lining curing conditions. The pH values of the effluent water of the cement lining (i.e., the cement lining without the addition of the three-dimensional graphene) and the three-dimensional graphene cement lining (i.e., the three-dimensional graphene water supply pipeline corrosion-resistant cement lining) in the deionized water soaking process are shown in fig. 4. The pH value of effluent of the three-dimensional graphene cement paste lining can be obviously reduced, and in the 180-day soaking process, the pH value of the effluent of the three-dimensional graphene cement lining is 10.7, which is reduced by 0.04-0.2 compared with the pH value of the effluent of the cement lining.
Example 3
The three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely, the pipeline lining based on the three-dimensional graphene material) is prepared by the following specific steps: adding oxidized graphene powder into water, crushing for 15min under the conditions of 25KHz and 1000w by using an ultrasonic cell crusher, then putting the crushed graphene powder into an ultrasonic cleaning machine, and carrying out ultrasonic treatment for 30min under the conditions of 40KHz and 300w, and repeating the steps for 3 times to obtain the oxidized graphene dispersion liquid with the concentration of 5 mg/mL.
And (3) putting the dispersion liquid into a polytetrafluoroethylene-lined stainless steel reaction kettle, heating for 10 hours at 200 ℃, and obtaining the three-dimensional graphene solid after the reaction is finished.
Grinding the three-dimensional graphene solid, adding a small amount of water, carrying out ultrasonic treatment for 30min in an ultrasonic cleaning machine under the conditions of 40KHz and 300w, and adding water to enable the concentration of the three-dimensional graphene dispersion liquid to be 5 mg/mL.
P.O 52.5.5 ordinary portland cement is taken, and three-dimensional graphene dispersion liquid and tap water are added in the stirring process, so that the water cement ratio of the finally mixed cement is 0.5, and the three-dimensional graphene accounts for 0.03 percent of the mass of the cement.
Adding the mixed cement into a cement lining machine for ductile cast iron pipes at a speed of 1200 r.min-1The rotational speed of (2) is centrifugally coated and lined on the inner wall of the DN100 centrifugal nodular cast iron pipe.
And after the lining is coated, curing at room temperature for 7d to obtain the three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely the pipeline lining based on the three-dimensional graphene material).
Comparative example 3
The three-dimensional graphene is not added in the pipeline lining.
For comparison, comparative example 3 is different from example 3 only in that no three-dimensional graphene is added, and a cement lining to which no three-dimensional graphene is added is prepared under the same water cement ratio and lining curing conditions. The calcium hydroxide in the cement lining (namely the cement lining without the three-dimensional graphene) accounts for 8.53 percent of the mass of the lining;
the mass fraction of calcium hydroxide in the three-dimensional graphene cement lining (namely the three-dimensional graphene anti-corrosion cement lining for the water supply pipeline) accounts for 10.18 percent of the lining.
Example 4
The three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely, the pipeline lining based on the three-dimensional graphene material) is prepared by the following specific steps:
adding oxidized graphene powder into water, crushing for 15min under the conditions of 25KHz and 1000w by using an ultrasonic cell crusher, then putting the crushed graphene powder into an ultrasonic cleaning machine, and carrying out ultrasonic treatment for 30min under the conditions of 40KHz and 300w, and repeating the steps for 3 times to obtain the oxidized graphene dispersion liquid with the concentration of 1 mg/mL.
And (3) putting the dispersion liquid into a polytetrafluoroethylene-lined stainless steel reaction kettle, heating for 20 hours at 100 ℃, and obtaining the three-dimensional graphene solid after the reaction is finished.
Grinding the three-dimensional graphene solid, adding a small amount of water, carrying out ultrasonic treatment for 30min in an ultrasonic cleaning machine under the conditions of 40KHz and 300w, and adding water to enable the concentration of the three-dimensional graphene dispersion liquid to be 100 mg/mL.
P.O 52.5.5 ordinary portland cement is taken, and three-dimensional graphene dispersion liquid and tap water are added in the stirring process, so that the water cement ratio of the finally mixed cement is 0.4, and the three-dimensional graphene accounts for 0.1% of the mass of the cement.
Adding the mixed cement into a cement lining machine for ductile cast iron pipes at a speed of 1200 r.min-1The rotational speed of (2) is centrifugally coated and lined on the inner wall of the DN100 centrifugal nodular cast iron pipe.
And (3) after the lining is coated, standing for 5 hours at room temperature, and then performing steam curing for 10 hours at 55 ℃ to obtain the three-dimensional graphene water supply pipeline corrosion-resistant cement lining (namely the pipeline lining based on the three-dimensional graphene material).
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A preparation method of three-dimensional graphene cement slurry is characterized by comprising the following steps:
(1) dispersing graphite oxide powder in water to obtain a graphene oxide dispersion liquid;
(2) closing and heating the graphene oxide dispersion liquid to obtain three-dimensional graphene;
(3) dispersing the three-dimensional graphene into water to obtain a three-dimensional graphene dispersion liquid;
(4) and mixing the three-dimensional graphene dispersion liquid with cement paste to finish the preparation of the three-dimensional graphene cement paste.
2. The production method according to claim 1,
in the step (1), the concentration of the graphite oxide powder in the graphene oxide dispersion liquid is 1-20 mg/mL;
in the step (2), the temperature of the closed heating is 80-400 ℃;
in the step (2), the closed heating time is 6-48 h;
in the step (3), the concentration of the three-dimensional graphene in the three-dimensional graphene dispersion liquid is 1 to 100 mg/mL.
3. The production method according to claim 1,
in the step (4), the preparation material of the cement slurry comprises Portland cement or ordinary Portland cement;
in the step (4), the mass ratio of the three-dimensional graphene to the three-dimensional graphene cement paste is 0.01-1%;
in the step (4), the water-cement ratio of the three-dimensional graphene cement paste is 0.3 to 0.5.
4. The three-dimensional graphene cement paste prepared according to the preparation method of any one of claims 1 to 3.
5. A preparation method of a pipeline lining based on a three-dimensional graphene material is characterized by comprising the following steps:
lining the inner wall of the pipeline with the three-dimensional graphene cement paste according to claim 4;
and maintaining the pipeline and coating the three-dimensional graphene cement paste on the inner wall of the pipeline to finish the preparation of the pipeline lining.
6. The production method according to claim 5,
the lining adopts a method comprising a centrifugal lining method, a mechanical spraying method or a manual lining method.
7. The production method according to claim 5,
the curing method comprises natural curing or steam curing;
when the curing method is a steam curing method,
the temperature of the steam curing method is 40 to 80 ℃;
the steam curing time is 3 to 10 hours.
8. The pipeline lining based on the three-dimensional graphene material prepared by the preparation method according to any one of claims 5 to 7.
9. The three-dimensional graphene-based material pipe liner according to claim 8,
during the soaking process of the deionized water for 180 days,
the pH value of effluent water of the three-dimensional graphene water supply pipeline corrosion-resistant cement lining in the soaking process is 10.64-11.56;
the three-dimensional grapheneThe release amount of calcium ions in the water supply pipeline corrosion-resistant cement lining in the soaking process is 1950 to 2300 mug/cm2；
The release amount of soluble solids in the corrosion-resistant cement lining of the three-dimensional graphene water supply pipeline in the soaking process is 11000-12000 mu g/cm2；
The mass fraction of the calcium hydroxide of the three-dimensional graphene water supply pipeline anti-corrosion cement lining in the pipeline lining is 10-11%.
10. Use of the three-dimensional graphene-based material pipe liner according to claim 8 or 9 in the field of municipal engineering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110122054.5A CN112794318B (en) | 2021-01-28 | 2021-01-28 | Pipeline lining based on three-dimensional graphene material and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110122054.5A CN112794318B (en) | 2021-01-28 | 2021-01-28 | Pipeline lining based on three-dimensional graphene material and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112794318A true CN112794318A (en) | 2021-05-14 |
| CN112794318B CN112794318B (en) | 2023-06-27 |
Family
ID=75812657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110122054.5A Active CN112794318B (en) | 2021-01-28 | 2021-01-28 | Pipeline lining based on three-dimensional graphene material and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112794318B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893960A (en) * | 2022-11-03 | 2023-04-04 | 新兴铸管股份有限公司 | Mortar lining material, nodular cast iron pipe lining for sewage and manufacturing method of mortar lining material and nodular cast iron pipe lining |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106315573A (en) * | 2016-08-23 | 2017-01-11 | 山东欧铂新材料有限公司 | Preparation method of modified graphene and cement composite material thereof |
| CN108424085A (en) * | 2018-05-02 | 2018-08-21 | 张翼航 | A kind of preparation method of graphene oxide enhancing cement-based mortar material |
| CN108546024A (en) * | 2018-06-22 | 2018-09-18 | 成都新柯力化工科技有限公司 | A kind of corrosion-resistant graphene cement mortar and preparation method |
| US20180277279A1 (en) * | 2016-11-23 | 2018-09-27 | David Brereton | Graphene Containing Composition, Multilayered Hydrogen Graphene Composition, Method of Making Both Compositions, and Applications of Both Compositions |
| CN110857246A (en) * | 2018-08-22 | 2020-03-03 | 西安理工大学 | Graphene oxide compounded cement mortar and preparation method thereof |
| WO2020209975A2 (en) * | 2019-03-12 | 2020-10-15 | H Quest Vanguard, Inc. | Nanocarbon material and applications of nanocarbon material |
-
2021
- 2021-01-28 CN CN202110122054.5A patent/CN112794318B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106315573A (en) * | 2016-08-23 | 2017-01-11 | 山东欧铂新材料有限公司 | Preparation method of modified graphene and cement composite material thereof |
| US20180277279A1 (en) * | 2016-11-23 | 2018-09-27 | David Brereton | Graphene Containing Composition, Multilayered Hydrogen Graphene Composition, Method of Making Both Compositions, and Applications of Both Compositions |
| CN108424085A (en) * | 2018-05-02 | 2018-08-21 | 张翼航 | A kind of preparation method of graphene oxide enhancing cement-based mortar material |
| CN108546024A (en) * | 2018-06-22 | 2018-09-18 | 成都新柯力化工科技有限公司 | A kind of corrosion-resistant graphene cement mortar and preparation method |
| CN110857246A (en) * | 2018-08-22 | 2020-03-03 | 西安理工大学 | Graphene oxide compounded cement mortar and preparation method thereof |
| WO2020209975A2 (en) * | 2019-03-12 | 2020-10-15 | H Quest Vanguard, Inc. | Nanocarbon material and applications of nanocarbon material |
Non-Patent Citations (5)
| Title |
|---|
| 刘洪丽等: "还原氧化石墨烯增强水泥基复合材料微观结构及力学性能", 《水泥工程》 * |
| 张亚娟: "氧化石墨烯分散液对路用水泥砂浆性能的影响", 《公路交通科技(应用技术版)》 * |
| 李振华: "石墨烯气凝胶增韧水泥复合材料的研究", 《水泥技术》 * |
| 王宝民等: "石墨烯的分散性及石墨烯水泥基复合材料的研究进展", 《混凝土》 * |
| 王江昆: "氧化石墨烯改性水泥基复合材料性能研究", 《中国优秀硕博学位论文全文数据库（硕士） 工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893960A (en) * | 2022-11-03 | 2023-04-04 | 新兴铸管股份有限公司 | Mortar lining material, nodular cast iron pipe lining for sewage and manufacturing method of mortar lining material and nodular cast iron pipe lining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112794318B (en) | 2023-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120318172A1 (en) | Calcium ferroaluminate compound, cement admixture and its manufacturing methods, and cement composition | |
| CN112794318B (en) | Pipeline lining based on three-dimensional graphene material and preparation method and application thereof | |
| US20220118516A1 (en) | Silicified modified zero-valent iron and its preparation method and application | |
| CN107915449B (en) | Dry-mixed masonry mortar and preparation method thereof | |
| CN105622023B (en) | A kind of sludge curing agent using clinker | |
| CN106746829B (en) | A kind of graphene-based concrete resist and its application | |
| CN111606648B (en) | Gypsum-based heat-conducting self-leveling mortar and preparation method and application thereof | |
| CN115043621A (en) | High-density cement slurry resistant to high temperature and carbon dioxide corrosion and preparation method and application thereof | |
| US4454172A (en) | Lining metal tubing with a corrosion- and abrasion-proof cement mortar | |
| CN105177540B (en) | A kind of diamond composite deposite applied to stone cutter tool | |
| CN114105513A (en) | Alkali-free accelerator and preparation method and application thereof | |
| CN107382124B (en) | Autoclaved aerated concrete plate steel bar antirust agent and preparation method thereof | |
| CN105062315A (en) | Anticorrosion alkyd resin powder coating for steel structure | |
| CN111019413A (en) | MoSi2Dacromet coating reinforced by SiC microparticles and coating method thereof | |
| CN116081976A (en) | High-performance concrete anti-corrosion reinforcing agent, preparation method and application | |
| CN102249594B (en) | Alkali-activated slag cement retarder and application method thereof | |
| CN110194625B (en) | Method for optimizing cement structure and improving corrosion resistance and permeability resistance of concrete | |
| JP2726475B2 (en) | Lining material and method of manufacturing lining tube using it | |
| KR102322614B1 (en) | Acid resistant concrete composition for structure | |
| CN112159181A (en) | Anticorrosive lining of nodular cast iron pipe for conveying drinking water and manufacturing method | |
| CN115010994B (en) | Modified superfine wollastonite powder and preparation method and application thereof | |
| CN112279546B (en) | Reinforced concrete composite rust inhibitor based on natural gluten | |
| CN108101498B (en) | High-heat-resistance phosphoaluminate cement-based foam concrete material | |
| CN103739097B (en) | Preparation method of corrosion-inhibiting agent made of phosphorus-molybdenum polymer | |
| CN106608721B (en) | Anticorrosion mortar for power transmission line pole tower foundation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhuang Yuan Inventor after: Liu Qiaozhi Inventor after: Shi Baoyou Inventor before: Zhuang Yuan Inventor before: Shi Baoyou Inventor before: Liu Qiaozhi |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |