CN112552699A - Carbon fiber-based high-thermal-conductivity modified asphalt mixture and preparation method thereof - Google Patents
Carbon fiber-based high-thermal-conductivity modified asphalt mixture and preparation method thereof Download PDFInfo
- Publication number
- CN112552699A CN112552699A CN202011443600.7A CN202011443600A CN112552699A CN 112552699 A CN112552699 A CN 112552699A CN 202011443600 A CN202011443600 A CN 202011443600A CN 112552699 A CN112552699 A CN 112552699A
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- parts
- asphalt mixture
- fiber
- stirring
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/14—Solid materials, e.g. powdery or granular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a carbon fiber-based high-thermal-conductivity modified asphalt mixture and a preparation method thereof. The invention comprises three-dimensional heat conducting material, styrene monomer, divinylbenzene, initiator, epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate. The asphalt mixture prepared by the invention avoids the defect that the common carbon fiber can only conduct heat in a fixed direction, and further enhances the heat conduction performance of the asphalt mixture. The polystyrene molecular chain generated by rapid polymerization under the synergistic action of high-speed electron irradiation and an initiator potassium persulfate is intertwined with the epoxy resin molecular chain, so that a stable molecular network structure is formed in an asphalt mixture system; the asphalt mixture prepared by the invention has good heat-conducting insulating property, excellent mechanical property, high safety, good stability, and high practicability, is not easy to generate electric leakage phenomenon, and is not easy to generate layering and precipitation phenomenon when standing.
Description
Technical Field
The invention relates to the technical field of asphalt, in particular to a carbon fiber-based high-thermal-conductivity modified asphalt mixture and a preparation method thereof.
Background
The asphalt mixture is a mixture formed by stirring and mixing mineral aggregate and asphalt binder, and is widely applied to various road pavements in China; the road surface formed by paving the asphalt mixture is smooth and flat, has good damping and noise reduction performance, comfortable driving feeling and high safety, and is very popular with people.
Although asphalt pavement has higher security under normal temperature environment, under the cold condition of weather, snow and the problem of freezing appear very easily on the road surface, snow on the road surface with freeze can seriously reduce asphalt pavement's cling compound ability, if not in time handle the snow on road surface with freeze, very easily lead to the traffic safety problem, influence normal traffic order, cause huge threat to citizen's personal safety and property safety.
At present, the modes for solving the problems of accumulated snow and icing on the road surface in China mainly comprise snow melting agent spreading, mechanical snow shoveling, thermal ice melting, electric ice melting and the like; the snow-melting agent spreading method is easy to corrode road facilities, accelerate the road surface aging, pollute underground water sources and the like; the ice crusher used in the mechanical snow shoveling method is easy to damage the road surface, the later repair cost of the road surface is high, and the snow shoveling efficiency is low; the pavement thermal ice-melting and electric ice-melting technology is characterized in that geothermal pipes, electric heating wires and other heating devices are arranged in the pavement to transfer heat energy to the pavement so as to melt ice and snow on the pavement; the method has high snow melting efficiency, does not damage road facilities and road structures, and has very wide application prospect.
However, the common asphalt mixture has poor heat conduction effect and low heat utilization rate, so that the waste of electric power and heat resources is easily caused, and the economic pressure of governments and people is increased; in order to reduce the energy loss rate and improve the snow melting efficiency of the asphalt pavement, researchers consider adding substances such as carbon nanotubes and carbon fibers into the asphalt mixture to enhance the heat conductivity of the asphalt mixture; however, substances such as carbon nanotubes and carbon fibers belong to substances with a one-dimensional nano structure, and although the substances have certain heat conduction performance, the substances have slender structures, and the heat conduction efficiency has anisotropy, namely the substances have high heat conduction performance in a specified direction and have poor heat conduction performance in other directions; the energy loss rate of the asphalt pavement prepared by directly introducing the carbon fiber and the carbon nano tube into the asphalt mixture is still high, and the carbon fiber and the carbon nano tube have excellent conductivity, so that once a heating device in the pavement has an electric leakage condition, the electric shock danger is easily caused to pedestrians on the pavement, and the safety performance of the pavement is reduced.
Therefore, there is a need for an asphalt mixture with high thermal conductivity and safety and a preparation method thereof to solve the problems mentioned above.
Disclosure of Invention
The invention aims to provide a carbon fiber-based high-thermal-conductivity modified asphalt mixture and a preparation method thereof, and aims to solve the problems in the background art.
A high-thermal-conductivity modified asphalt mixture based on carbon fibers comprises the following raw material components: by weight, 80-120 parts of three-dimensional heat-conducting material, 50-60 parts of styrene monomer, 50-60 parts of divinylbenzene, 10-15 parts of initiator, 200 parts of epoxy resin, 70-80 parts of carboxyl silicone oil, 300 parts of epoxy asphalt, 80-100 parts of mineral fiber and 60-90 parts of aggregate. The initiator is potassium persulfate.
Further, the three-dimensional heat conduction material comprises the following raw material components: 80-90 parts of modified carbon fiber, 20-30 parts of amino-hydrocarbon silane coupling agent, 20-30 parts of three-dimensional carbon boron nitride nano powder and 20-30 parts of epoxy-hydrocarbon silane coupling agent.
Further, the mercaptosilane coupling agent is one or more of gamma-mercaptopropyltrimethoxysilane and alpha-mercaptomethyltriethoxysilane; the epoxyhydrocarbyl silane coupling agent is one or more of 3- (2, 3-epoxypropoxy) propyl trimethoxy silane, 2- (3, 4-epoxyhexane) ethyl trimethoxy silane and 3- (2, 3-epoxypropoxy) propyl methyl diethoxy silane; the amino hydrocarbyl silane coupling agent is one or more of 3- (2-amino ethylamino) propyl methyl dimethyl silane and 3-amino propyl triethoxy silane.
Further, the modified carbon fiber comprises the following raw material components: by weight, 100-200 parts of carbon fiber, 30-50 parts of polyurethane emulsion, 60-80 parts of mercaptosilane coupling agent, 60-70 parts of aluminum chloride hexahydrate, 60-70 parts of magnesium chloride hexahydrate, 50-90 parts of polyethylene glycol and 100-120 parts of ammonia water.
Further, the molecular weight of the polyethylene glycol is 1200-1600; the mass fraction of the polyurethane emulsion is 0.2-0.8%; the length of the carbon fiber is 1-90 nm; the diameter of the three-dimensional boron carbonitride nano powder is 2-4 mu m.
A preparation method of a carbon fiber-based high-thermal-conductivity modified asphalt mixture comprises the following steps:
s1, activating carbon fibers:
a. carrying out plasma treatment on the carbon fiber to obtain fiber A;
b. soaking the fiber A in polyurethane emulsion, taking out and drying to obtain activated carbon fiber;
s2, preparing modified carbon fibers:
a. under the condition of low pressure, putting the mercaptosilane coupling agent into an ethanol solution, stirring and dispersing, adding activated carbon fiber, stirring, filtering, washing and drying to obtain fiber B;
b. under the condition of low pressure, putting aluminum chloride hexahydrate and magnesium chloride hexahydrate in deionized water, stirring and dispersing, adding polyethylene glycol and fiber B, and performing ultrasonic dispersion to obtain a material A;
c. dripping the material A into an ammonia water solution, adjusting the pH value, aging, filtering, washing and drying to obtain a material B;
d. calcining the material B, and taking out to obtain modified carbon fibers;
s3, synthesizing a three-dimensional heat conduction material:
a. placing the amino-hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding three-dimensional boron carbonitride nano powder, continuing ultrasonic dispersion, and performing suction filtration to obtain a material C;
b. placing the epoxy hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding the modified carbon fiber, performing ultrasonic dispersion, and performing suction filtration to obtain a material D;
c. uniformly mixing the material C and the material D, adding an ethanol solution, carrying out ball milling, and drying to obtain a three-dimensional heat conducting material;
s4, preparing an asphalt mixture:
a. uniformly mixing the three-dimensional heat-conducting material, a styrene monomer and divinylbenzene, stirring, adding an initiator, and continuously stirring to obtain a material E;
b. and (3) sequentially adding the epoxy resin, the carboxyl silicone oil, the epoxy asphalt, the mineral fiber and the aggregate into the material E, uniformly stirring, and shearing at a high speed to obtain an asphalt mixture.
The method specifically comprises the following steps:
s1, activating carbon fibers:
a. carrying out plasma treatment on the carbon fiber to obtain fiber A;
b. soaking the fiber A in 0.2-0.8 wt% polyurethane emulsion for 20-30min, taking out and drying to obtain activated carbon fiber;
soaking the fiber A in polyurethane emulsion for 20-30min, taking out and drying to obtain activated carbon fiber;
the plasma treatment is carried out under the atmosphere of argon/oxygen mixed gas, on one hand, the influence of impurity gas in the air on the reaction can be reduced, on the other hand, a large number of oxygen-containing groups can be introduced on the carbon fiber, the activity of the carbon fiber is increased, and reaction sites are provided for the subsequent reaction. After the carbon fiber is subjected to plasma treatment, the carbon fiber needs to be soaked in polyurethane emulsion for a period of time, and the polyurethane emulsion can make up for the defects of the carbon fiber caused by the plasma treatment to a certain extent and enhance the mechanical property of the carbon fiber; in order to reduce the influence of plasma treatment on the performance of the carbon fiber as much as possible, the treatment time is not too long and is controlled within 12-22 s; the activated carbon fiber has more active sites, so that the subsequent reaction is more favorably realized;
s2, preparing modified carbon fibers:
a. under the condition of low pressure, putting the mercaptosilane coupling agent into an ethanol solution, stirring and dispersing, adding the activated carbon fiber, stirring and reacting for 2-3h, and performing suction filtration, washing and drying to obtain fiber B;
b. keeping constant temperature environment of 30-40 ℃ under low pressure, placing aluminum chloride hexahydrate and magnesium chloride hexahydrate in deionized water, stirring and dispersing, adding polyethylene glycol and fiber B, and performing ultrasonic dispersion for 2-3 hours to obtain a material A;
the carbon fiber surface is activated, the surface of the carbon fiber is modified with the mercapto silane coupling agent, and the carbon fiber modified by the mercapto silane coupling agent has a large number of mercapto functional groups, so that the carbon fiber has a negative charge characteristic as a whole and has a certain complexing effect on metal ions with a positive charge characteristic. The low-pressure condition can enable the carbon fiber to be fully soaked by the mercaptosilane coupling agent, so that the mercaptosilane coupling agent can be modified on the carbon fiber as much as possible.
c. Raising the pressure to 0.2-0.4MPa, dripping the material A into an ammonia water solution at the dripping speed of 18-20ml/min, adjusting the pH value to 8-10, aging, filtering, washing and drying to obtain a material B;
d. and calcining the material B for 3-5h, and taking out to obtain the modified carbon fiber.
Aluminum ions and magnesium ions in the aluminum chloride hexahydrate and the magnesium chloride hexahydrate are dissociated from the solution and are complexed with sulfydryl on the carbon fiber, so that the aluminum ions and the magnesium ions are adsorbed on the carbon fiber, and under the action of a precipitator, ammonia water, a smooth nano magnesium oxide/nano aluminum oxide compound with fine particle size and fine surface is gradually generated on the carbon fiber; the polyethylene glycol is used as a dispersing agent, so that the coating process of the nano magnesium oxide and the nano aluminum oxide on the carbon fiber is more uniform, and the phenomenon of alternate agglomeration of nano particles is avoided; because the activity of the directly generated nano-alumina/nano-magnesia composite is too high and the property is not stable enough, in order to improve the stability of the modified carbon fiber, the carbon fiber loaded with the nano-magnesia/nano-alumina composite is calcined; the agglomeration between the nano-alumina/nano-magnesia on the calcined carbon fiber is changed from high-activity soft agglomeration into high-stability hard agglomeration; meanwhile, in order to avoid excessive expansion of crystal grains caused by excessively high calcination temperature, so that the overall particle size of the carbon fiber is too large to be beneficial to the subsequent interpenetration reaction in the porous boron nitride, the calcination temperature in the invention needs to be strictly controlled within the range of 300-500 ℃.
S3, synthesizing a three-dimensional heat conduction material:
a. placing the amino-hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding three-dimensional boron carbonitride nano powder, continuing ultrasonic dispersion for 30-50min, and performing suction filtration to obtain a material C;
b. placing the epoxy hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding the modified carbon fiber, performing ultrasonic dispersion for 30-50min, and performing suction filtration to obtain a material D;
c. uniformly mixing the material C and the material D, adding an ethanol solution, ball-milling for 1-3h at the rotating speed of 400r/min under 200-;
the three-dimensional boron carbonitride powder is full of holes with the diameter of 1-100nm, and has high porosity, good mechanical property and heat conductivity and excellent insulativity; the invention respectively modifies an amino-hydrocarbon silane coupling agent and an epoxy-hydrocarbon silane coupling agent on three-dimensional boron carbonitride nano powder and modified carbon fibers, the three-dimensional boron carbonitride nano powder modified by the amino-hydrocarbon silane coupling agent has amino groups and shows positive charge characteristics, the modified carbon fibers modified by the epoxy-hydrocarbon silane coupling agent have groups such as epoxy groups and mercapto groups and mainly show negative charge characteristics, the three-dimensional boron carbonitride nano powder with positive charge and the modified carbon fibers with negative charge are assembled together through charge interaction, and the action is further strengthened under the ball milling reaction; the modified carbon fiber is inserted into pores on the surface of the three-dimensional boron carbonitride to form a three-dimensional heat conducting material through the synergistic effect of chemical combination and physical combination;
mixing the prepared three-dimensional heat-conducting material with styrene monomer, divinylbenzene, epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate to prepare an asphalt mixture; the defect that carbon fibers can only conduct heat in a fixed direction is avoided, the heat conducting capacity of the prepared three-dimensional heat conducting material is further enhanced by utilizing the synergistic effect of the modified carbon fibers and the three-dimensional boron carbonitride powder, and the compressive strength liquid of the material is remarkably improved due to the fact that the modified carbon fibers are loaded; mixing the three-dimensional heat-conducting material with a styrene monomer and divinylbenzene, introducing the styrene monomer and the divinylbenzene into the surface of the three-dimensional heat-conducting material to prepare a material E, and rapidly polymerizing the material E in the asphalt mixture under the synergistic action of high-speed electron irradiation and an initiator potassium persulfate, and winding the material E with epoxy resin molecular chains to form a stable molecular network structure in an asphalt mixture system; meanwhile, the amino-hydrocarbon silane coupling agent and the epoxy-hydrocarbon silane coupling agent on the three-dimensional heat conducting material are crosslinked with carboxyl-group silicon oil molecules in the asphalt mixture besides chemical bond crosslinking, so that a stable and compact network structure in the asphalt mixture is further strengthened, the interface bonding force of the three-dimensional heat conducting material in the asphalt mixture is enhanced, and the mechanical property and the anti-rutting property of the asphalt mixture are improved.
The polystyrene generated in the invention has better heat preservation, insulation and shock resistance, the epoxy resin has the characteristics of large viscosity and good chemical resistance, the asphalt mixture in the invention has good heat preservation and insulation performance under the synergistic action of the polystyrene and the epoxy resin, the stability of each material in the asphalt concrete is good, the layering and precipitation phenomena are not easy to occur during standing, and the prepared asphalt pavement has more excellent performance and very high practicability.
The magnesium oxide/aluminum oxide forbidden band generated on the modified carbon fiber has the width of about 8.2, has certain photocatalysis capacity and sterilization effect, and is good in heat conduction and insulation properties, and the three-dimensional heat conduction powder prepared by introducing the magnesium oxide/aluminum oxide forbidden band onto the carbon fiber not only obviously improves the compression resistance of the three-dimensional heat conduction powder, but also enables the prepared asphalt mixture to have certain sterilization and antibacterial properties, effectively inhibits the formation of mildew spots and bacterial plaques on an asphalt pavement, keeps the pavement clean and tidy, and improves the overall mechanical property of the asphalt pavement.
S4, preparing an asphalt mixture:
a. uniformly mixing the three-dimensional heat-conducting material, a styrene monomer and divinylbenzene, stirring and reacting for 10-20min, adding an initiator, and continuously stirring and reacting for 10-20min to obtain a material E;
b. sequentially adding epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate into the material E, uniformly stirring at the rotating speed of 200-400r/min, and shearing at a high speed of 100-150 ℃ for 1-2h to obtain an asphalt mixture;
further, the step B of the step S4. needs to be carried out under the irradiation condition of the high-speed electron beam rays, and the irradiation dose of the high-speed electron beam rays is 22-28 kGy.
Further, the steps S1-S4 also need to be carried out under a nitrogen atmosphere; avoid other gases or impurities in the air from influencing the reaction.
Further, the plasma treatment operation in the step a of the step S1 needs to be carried out in an argon/oxygen mixed gas atmosphere, the plasma treatment voltage is 5-7kV, the current is 12-20mA, and the plasma treatment time is 12-22 s; the step S1 is performed under an argon/oxygen mixture atmosphere.
Further, the pressure of the low pressure condition is 0.01-0.03 MPa.
Further, the calcination temperature in the step d of the step S2. is 300-500 ℃.
Compared with the prior art, the invention has the following beneficial effects: the invention discloses a carbon fiber-based high-thermal-conductivity modified asphalt mixture and a preparation method thereof. Comprises three-dimensional heat-conducting material, styrene monomer, divinylbenzene, initiator, epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate. The asphalt mixture prepared by the invention avoids the defect that the common carbon fiber can only conduct heat in a fixed direction, and the heat conducting capability of the prepared three-dimensional heat conducting material is further enhanced; the compressive strength is obviously improved because the modified carbon fibers are also loaded on the three-dimensional heat conducting material; the polystyrene molecular chain generated by rapid polymerization under the synergistic action of high-speed electron irradiation and an initiator potassium persulfate is intertwined with the epoxy resin molecular chain, so that a stable molecular network structure is formed in an asphalt mixture system; the asphalt mixture prepared by the invention has good heat conduction insulating property, is not easy to generate electric leakage phenomenon, has high safety, and has good stability and strong mechanical property in asphalt concrete, thereby having very high practicability.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A high-thermal-conductivity modified asphalt mixture based on carbon fibers comprises the following raw material components: the heat-conducting material comprises, by weight, 80 parts of a three-dimensional heat-conducting material, 50 parts of a styrene monomer, 50 parts of divinylbenzene, 10 parts of an initiator, 100 parts of epoxy resin, 70 parts of carboxyl silicone oil, 200 parts of epoxy asphalt, 80 parts of mineral fiber and 60 parts of aggregate.
The three-dimensional heat conduction material comprises the following raw material components: the composite material comprises, by weight, 80 parts of modified carbon fibers, 20 parts of an amino-hydrocarbon-based silane coupling agent, 20 parts of three-dimensional carbon boron nitride nano powder and 20 parts of an epoxy-hydrocarbon-based silane coupling agent.
The modified carbon fiber comprises the following raw material components: the composite material comprises, by weight, 100 parts of carbon fibers, 30 parts of polyurethane emulsion, 60 parts of mercaptosilane coupling agent, 60 parts of aluminum chloride hexahydrate, 60 parts of magnesium chloride hexahydrate, 50 parts of polyethylene glycol and 100 parts of ammonia water.
The molecular weight of the polyethylene glycol is 1200; the mass fraction of the polyurethane emulsion is 0.2%; the length of the carbon fiber is 1 nm; the diameter of the three-dimensional boron carbonitride nano powder is 2 mu m.
S1, activating carbon fibers:
a. carrying out plasma treatment on the carbon fiber in an argon/oxygen mixed gas atmosphere, setting the plasma treatment voltage to be 5kV, the current to be 12mA and the plasma treatment time to be 12s to obtain a fiber A;
b. soaking the fiber A in polyurethane emulsion for 20min, taking out and drying to obtain activated carbon fiber;
s2, preparing modified carbon fibers:
a. under the condition of low pressure, putting the mercaptosilane coupling agent into an ethanol solution, stirring and dispersing, adding the activated carbon fiber, stirring and reacting for 2 hours, and filtering, washing and drying to obtain fiber B;
b. keeping a constant temperature environment of 30 ℃ under a low pressure condition, placing aluminum chloride hexahydrate and magnesium chloride hexahydrate in deionized water, stirring and dispersing, adding polyethylene glycol and fiber B, and performing ultrasonic dispersion for 2 hours to obtain a material A;
c. raising the pressure to 0.2MPa, dripping the material A into an ammonia water solution at the dripping speed of 18ml/min, adjusting the pH value to 8, aging, filtering, washing and drying to obtain a material B;
d. calcining the material B at the temperature of 300 ℃ for 3h, and taking out to obtain modified carbon fibers;
s3, synthesizing a three-dimensional heat conduction material:
a. placing the amino-hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding three-dimensional boron carbonitride nano powder, continuing ultrasonic dispersion for 30min, and performing suction filtration to obtain a material C;
b. placing the epoxy hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding the modified carbon fiber, performing ultrasonic dispersion for 30min, and performing suction filtration to obtain a material D;
c. uniformly mixing the material C and the material D, adding an ethanol solution, carrying out ball milling for 1h at the rotating speed of 200r/min, and drying to obtain a three-dimensional heat conducting material;
s4, preparing an asphalt mixture:
a. uniformly mixing the three-dimensional heat-conducting material, a styrene monomer and divinylbenzene, stirring and reacting for 10min, adding an initiator, and continuously stirring and reacting for 10min to obtain a material E;
b. and (3) sequentially adding epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate into the material E, uniformly stirring at the rotating speed of 200r/min, and shearing at a high speed for 1h at the temperature of 100 ℃ to obtain an asphalt mixture.
The step B of the step S4. needs to be carried out under the irradiation condition of the high-speed electron beam rays, and the irradiation dose of the high-speed electron beam rays is 22 kGy.
The steps S1-S4 also need to be carried out under a nitrogen atmosphere; the pressure under the low pressure condition is 0.01 MPa.
Example 2
A high-thermal-conductivity modified asphalt mixture based on carbon fibers comprises the following raw material components: the heat-conducting resin comprises, by weight, 100 parts of a three-dimensional heat-conducting material, 55 parts of a styrene monomer, 55 parts of divinylbenzene, 13 parts of an initiator, 150 parts of epoxy resin, 75 parts of carboxyl silicone oil, 250 parts of epoxy asphalt, 90 parts of mineral fiber and 70 parts of aggregate.
The three-dimensional heat conduction material comprises the following raw material components: the composite material comprises, by weight, 85 parts of modified carbon fibers, 25 parts of an aminoalkyl silane coupling agent, 25 parts of three-dimensional boron carbonitride nano powder and 25 parts of an epoxyalkyl silane coupling agent.
The modified carbon fiber comprises the following raw material components: the coating comprises, by weight, 150 parts of carbon fibers, 40 parts of polyurethane emulsion, 70 parts of mercaptosilane coupling agent, 65 parts of aluminum chloride hexahydrate, 65 parts of magnesium chloride hexahydrate, 65 parts of polyethylene glycol and 110 parts of ammonia water.
The molecular weight of the polyethylene glycol is 1400; the mass fraction of the polyurethane emulsion is 0.6 percent; the length of the carbon fiber is 40 nm; the diameter of the three-dimensional boron carbonitride nano powder is 3 mu m.
S1, activating carbon fibers:
a. carrying out plasma treatment on the carbon fiber, setting the plasma treatment voltage to be 6kV, the current to be 16mA and the plasma treatment time to be 18s to obtain fiber A;
b. soaking the fiber A in polyurethane emulsion for 25min, taking out and drying to obtain activated carbon fiber;
s2, preparing modified carbon fibers:
a. under the condition of low pressure, putting the mercaptosilane coupling agent into an ethanol solution, stirring and dispersing, adding the activated carbon fiber, stirring and reacting for 2.5h, and performing suction filtration, washing and drying to obtain fiber B;
b. keeping a constant temperature environment of 35 ℃ under a low pressure condition, placing aluminum chloride hexahydrate and magnesium chloride hexahydrate in deionized water, stirring and dispersing, adding polyethylene glycol and fiber B, and performing ultrasonic dispersion for 2.5 hours to obtain a material A;
c. raising the pressure to 0.3MPa, dripping the material A into an ammonia water solution at the dripping speed of 19ml/min, adjusting the pH value to 9, aging, filtering, washing and drying to obtain a material B;
d. calcining the material B at the temperature of 400 ℃ for 4h, and taking out to obtain modified carbon fibers;
s3, synthesizing a three-dimensional heat conduction material:
a. placing the amino-hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding three-dimensional boron carbonitride nano powder, continuing ultrasonic dispersion for 40min, and performing suction filtration to obtain a material C;
b. placing the epoxy hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding the modified carbon fiber, performing ultrasonic dispersion for 40min, and performing suction filtration to obtain a material D;
c. uniformly mixing the material C and the material D, adding an ethanol solution, carrying out ball milling for 2 hours at the rotating speed of 300r/min, and drying to obtain a three-dimensional heat conducting material;
s4, preparing an asphalt mixture:
a. uniformly mixing the three-dimensional heat-conducting material, a styrene monomer and divinylbenzene, stirring and reacting for 15min, adding an initiator, and continuously stirring and reacting for 15min to obtain a material E;
b. and (3) sequentially adding epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate into the material E, uniformly stirring at the rotating speed of 300r/min, and shearing at a high speed of 130 ℃ for 1.5h to obtain an asphalt mixture.
The step B of the step S4 needs to be carried out under the irradiation condition of the high-speed electron beam rays, and the irradiation dose of the high-speed electron beam rays is 25 kGy.
The steps S1-S4 also need to be carried out under a nitrogen atmosphere; the pressure under the low pressure condition is 0.02 MPa.
Example 3
A high-thermal-conductivity modified asphalt mixture based on carbon fibers comprises the following raw material components: the heat-conducting resin comprises, by weight, 120 parts of a three-dimensional heat-conducting material, 60 parts of a styrene monomer, 60 parts of divinylbenzene, 15 parts of an initiator, 200 parts of epoxy resin, 80 parts of carboxyl silicone oil, 300 parts of epoxy asphalt, 100 parts of mineral fiber and 90 parts of aggregate.
The three-dimensional heat conduction material comprises the following raw material components: the composite material comprises, by weight, 90 parts of modified carbon fibers, 30 parts of an amino hydrocarbyl silane coupling agent, 30 parts of three-dimensional carbon boron nitride nano powder and 30 parts of an epoxy hydrocarbyl silane coupling agent.
The modified carbon fiber comprises the following raw material components: the composite material comprises, by weight, 200 parts of carbon fibers, 50 parts of polyurethane emulsion, 80 parts of mercaptosilane coupling agent, 70 parts of aluminum chloride hexahydrate, 70 parts of magnesium chloride hexahydrate, 90 parts of polyethylene glycol and 120 parts of ammonia water.
The molecular weight of the polyethylene glycol is 1600; the mass fraction of the polyurethane emulsion is 0.8%; the length of the carbon fiber is 90 nm; the diameter of the three-dimensional boron carbonitride nano powder is 4 mu m.
S1, activating carbon fibers:
a. carrying out plasma treatment on the carbon fiber, setting the plasma treatment voltage to be 7kV, the current to be 20mA and the plasma treatment time to be 22s to obtain fiber A;
b. soaking the fiber A in polyurethane emulsion for 30min, taking out and drying to obtain activated carbon fiber;
s2, preparing modified carbon fibers:
a. under the condition of low pressure, putting the mercaptosilane coupling agent into an ethanol solution, stirring and dispersing, adding the activated carbon fiber, stirring and reacting for 3 hours, and filtering, washing and drying to obtain fiber B;
b. keeping a constant temperature environment of 40 ℃ under a low pressure condition, placing aluminum chloride hexahydrate and magnesium chloride hexahydrate in deionized water, stirring and dispersing, adding polyethylene glycol and fiber B, and performing ultrasonic dispersion for 3 hours to obtain a material A;
c. raising the pressure to 0.4MPa, dripping the material A into an ammonia water solution at the dripping speed of 20ml/min, adjusting the pH value to 10, aging, filtering, washing and drying to obtain a material B;
d. calcining the material B at 500 ℃ for 5 hours, and taking out to obtain modified carbon fibers;
s3, synthesizing a three-dimensional heat conduction material:
a. placing the amino-hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding three-dimensional boron carbonitride nano powder, continuing ultrasonic dispersion for 50min, and performing suction filtration to obtain a material C;
b. placing the epoxy hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding the modified carbon fiber, performing ultrasonic dispersion for 50min, and performing suction filtration to obtain a material D;
c. uniformly mixing the material C and the material D, adding an ethanol solution, performing ball milling for 3 hours at the rotating speed of 400r/min, and drying to obtain a three-dimensional heat conducting material;
s4, preparing an asphalt mixture:
a. uniformly mixing the three-dimensional heat-conducting material, a styrene monomer and divinylbenzene, stirring and reacting for 20min, adding an initiator, and continuously stirring and reacting for 20min to obtain a material E;
b. and (3) sequentially adding epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate into the material E, uniformly stirring at the rotating speed of 400r/min, and shearing at a high speed of 150 ℃ for 2 hours to obtain an asphalt mixture.
And the step B of the step S4 needs to be carried out under the irradiation condition of high-speed electron beam rays, and the radiation dose of the high-speed electron beam rays is 28 kGy.
The steps S1-S4 also need to be carried out under a nitrogen atmosphere; the pressure under the low pressure condition is 0.03 MPa.
And (3) testing: the asphalt mixture was molded into test pieces of 100mm × 100mm × 50mm by a wheel milling method, and the test pieces were left at room temperature for 48 hours, dried, and subjected to the following performance tests.
And (3) testing the heat conductivity coefficient: the test was performed according to ASTM C1113 transient hot-wire method.
And (3) resistivity testing: the resistivity meter was used for testing.
And (3) testing the compressive strength: the test is carried out according to the test method of road engineering asphalt and asphalt mixture test protocol (JTC F20-2011).
According to the data in the table, the thermal conductivity of the asphalt mixture prepared in the embodiments 1-3 is 0.61-0.73W (m.K), the asphalt mixture has good heat conductivity, high system resistance and good insulativity, the prepared asphalt mixture is not easy to generate electric leakage, and the safety performance of the asphalt road is greatly improved; the compressive strength is far higher than that of the common asphalt mixture, and the asphalt mixture has excellent mechanical properties and high practicability.
Example 4
The difference from example 3 is that magnesium chloride hexahydrate, aluminum chloride hexahydrate were not added; nanometer alumina and nanometer magnesia with high heat conductivity and high insulating performance can not grow on the carbon fiber, and the mechanical property, the heat conductivity and the insulating performance of the asphalt mixture are all reduced.
Example 5
The difference from the embodiment 3 is that the mercaptosilane coupling agent is not added, because the carbon fiber lacks enough active groups to complex metal ions, the load rate of the nano magnesium oxide and the nano aluminum oxide on the carbon fiber is low, and the prepared asphalt mixture has insufficient mechanical property, heat conductivity and insulating property.
Example 6
The difference from the example 3 is that no amino hydrocarbon silane coupling agent or epoxy hydrocarbon silane coupling agent is added; the modified carbon fiber and the three-dimensional boron carbonitride powder can only be assembled by the action of physical ball milling, the assembly effect is poor, the modified carbon fiber and the three-dimensional boron carbonitride powder are easy to separate in the high-speed shearing process of the asphalt mixture, and the three-dimensional heat conducting powder cannot react with the carboxyl silicone oil and strengthen the network structure in the asphalt mixture, so that the thermal conductivity of the asphalt mixture is poor, and the mechanical property is reduced.
Example 7
The difference from the embodiment 3 is that the styrene monomer and the divinylbenzene are not added, the stable network structure can not be generated in the asphalt mixture through copolymerization reaction in the asphalt mixture, and the mechanical property of the asphalt mixture is insufficient.
From the above data and experiments, we can conclude that: the invention discloses a carbon fiber-based high-thermal-conductivity modified asphalt mixture and a preparation method thereof. Comprises three-dimensional heat-conducting material, styrene monomer, divinylbenzene, initiator, epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate. The asphalt mixture prepared by the invention avoids the defect that the common carbon fiber can only conduct heat in a fixed direction, and the heat conducting capability of the prepared three-dimensional heat conducting material is further enhanced; the compressive strength is obviously improved because the modified carbon fibers are also loaded on the three-dimensional heat conducting material; the polystyrene molecular chain generated by rapid polymerization under the synergistic action of high-speed electron irradiation and an initiator potassium persulfate is intertwined with the epoxy resin molecular chain, so that a stable molecular network structure is formed in an asphalt mixture system; the asphalt mixture prepared by the invention has good heat conduction insulating property, is not easy to generate electric leakage phenomenon, has high safety, has good stability of each material in the asphalt concrete, is not easy to generate layering and precipitation phenomenon when standing, and has very practicability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high heat conduction modified asphalt mixture based on carbon fiber which characterized in that: the raw material components are as follows: by weight, 80-120 parts of three-dimensional heat-conducting material, 50-60 parts of styrene monomer, 50-60 parts of divinylbenzene, 10-15 parts of initiator, 200 parts of epoxy resin, 70-80 parts of carboxyl silicone oil, 300 parts of epoxy asphalt, 80-100 parts of mineral fiber and 60-90 parts of aggregate.
2. The carbon fiber-based high-thermal-conductivity modified asphalt mixture according to claim 1, characterized in that: the three-dimensional heat conduction material comprises the following raw material components: 80-90 parts of modified carbon fiber, 20-30 parts of amino-hydrocarbon silane coupling agent, 20-30 parts of three-dimensional carbon boron nitride nano powder and 20-30 parts of epoxy-hydrocarbon silane coupling agent.
3. The carbon fiber-based high-thermal-conductivity modified asphalt mixture according to claim 2, characterized in that: the modified carbon fiber comprises the following raw material components: by weight, 100-200 parts of carbon fiber, 30-50 parts of polyurethane emulsion, 60-80 parts of mercaptosilane coupling agent, 60-70 parts of aluminum chloride hexahydrate, 60-70 parts of magnesium chloride hexahydrate, 50-90 parts of polyethylene glycol and 100-120 parts of ammonia water.
4. The carbon fiber-based high-thermal-conductivity modified asphalt mixture according to claim 3, characterized in that: the molecular weight of the polyethylene glycol is 1200-1600; the mass fraction of the polyurethane emulsion is 0.2-0.8%; the length of the carbon fiber is 1-90 nm.
5. A preparation method of a carbon fiber-based high-thermal-conductivity modified asphalt mixture is characterized by comprising the following steps:
s1, activating carbon fibers:
a. carrying out plasma treatment on the carbon fiber to obtain fiber A;
b. soaking the fiber A in polyurethane emulsion, taking out and drying to obtain activated carbon fiber;
s2, preparing modified carbon fibers:
a. under the condition of low pressure, putting the mercaptosilane coupling agent into an ethanol solution, stirring and dispersing, adding activated carbon fiber, stirring, filtering, washing and drying to obtain fiber B;
b. under the condition of low pressure, putting aluminum chloride hexahydrate and magnesium chloride hexahydrate in deionized water, stirring and dispersing, adding polyethylene glycol and fiber B, and performing ultrasonic dispersion to obtain a material A;
c. dripping the material A into an ammonia water solution, adjusting the pH value, aging, filtering, washing and drying to obtain a material B;
d. calcining the material B, and taking out to obtain modified carbon fibers;
s3, synthesizing a three-dimensional heat conduction material:
a. placing the amino-hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding three-dimensional boron carbonitride nano powder, continuing ultrasonic dispersion, and performing suction filtration to obtain a material C;
b. placing the epoxy hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding the modified carbon fiber, performing ultrasonic dispersion, and performing suction filtration to obtain a material D;
c. uniformly mixing the material C and the material D, adding an ethanol solution, carrying out ball milling, and drying to obtain a three-dimensional heat conducting material;
s4, preparing an asphalt mixture:
a. uniformly mixing the three-dimensional heat-conducting material, a styrene monomer and divinylbenzene, stirring, adding an initiator, and continuously stirring to obtain a material E;
b. and (3) sequentially adding the epoxy resin, the carboxyl silicone oil, the epoxy asphalt, the mineral fiber and the aggregate into the material E, uniformly stirring, and shearing at a high speed to obtain an asphalt mixture.
6. The preparation method of the carbon fiber-based high-thermal-conductivity modified asphalt mixture according to claim 5, characterized by comprising the following steps: the method specifically comprises the following steps:
s1, activating carbon fibers:
a. carrying out plasma treatment on the carbon fiber to obtain fiber A;
b. soaking the fiber A in polyurethane emulsion for 20-30min, taking out and drying to obtain activated carbon fiber;
s2, preparing modified carbon fibers:
a. under the condition of low pressure, putting the mercaptosilane coupling agent into an ethanol solution, stirring and dispersing, adding the activated carbon fiber, stirring and reacting for 2-3h, and performing suction filtration, washing and drying to obtain fiber B;
b. keeping constant temperature environment of 30-40 ℃ under low pressure, placing aluminum chloride hexahydrate and magnesium chloride hexahydrate in deionized water, stirring and dispersing, adding polyethylene glycol and fiber B, and performing ultrasonic dispersion for 2-3 hours to obtain a material A;
c. raising the pressure to 0.2-0.4MPa, dripping the material A into an ammonia water solution at the dripping speed of 18-20ml/min, adjusting the pH value to 8-10, aging, filtering, washing and drying to obtain a material B;
d. calcining the material B for 3-5h, and taking out to obtain modified carbon fibers;
s3, synthesizing a three-dimensional heat conduction material:
a. placing the amino-hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding three-dimensional boron carbonitride nano powder, continuing ultrasonic dispersion for 30-50min, and performing suction filtration to obtain a material C;
b. placing the epoxy hydrocarbon silane coupling agent in an ethanol solution, stirring and dispersing, adding the modified carbon fiber, performing ultrasonic dispersion for 30-50min, and performing suction filtration to obtain a material D;
c. uniformly mixing the material C and the material D, adding an ethanol solution, ball-milling for 1-3h at the rotating speed of 400r/min under 200-;
s4, preparing an asphalt mixture:
a. uniformly mixing the three-dimensional heat-conducting material, a styrene monomer and divinylbenzene, stirring and reacting for 10-20min, adding an initiator, and continuously stirring and reacting for 10-20min to obtain a material E;
b. and sequentially adding epoxy resin, carboxyl silicone oil, epoxy asphalt, mineral fiber and aggregate into the material E, uniformly stirring at the rotating speed of 200-400r/min, and shearing at a high speed of 100-150 ℃ for 1-2h to obtain the asphalt mixture.
7. The preparation method of the carbon fiber-based high-thermal-conductivity modified asphalt mixture according to claim 6, characterized by comprising the following steps: the step B of the step S4. needs to be carried out under the irradiation condition of high-speed electron beam rays, and the irradiation dose of the high-speed electron beam rays is 22-28 kGy.
8. The preparation method of the carbon fiber-based high-thermal-conductivity modified asphalt mixture according to claim 6, characterized by comprising the following steps: the plasma treatment operation in the step (a) of the step (S1) needs to be carried out in an argon/oxygen mixed gas atmosphere, the plasma treatment voltage is 5-7kV, the current is 12-20mA, and the plasma treatment time is 12-22 s; the step S1 is performed under an argon/oxygen mixture atmosphere.
9. The preparation method of the carbon fiber-based high-thermal-conductivity modified asphalt mixture according to claim 6, characterized by comprising the following steps: the pressure of the low-pressure condition is 0.01-0.03 MPa.
10. The preparation method of the carbon fiber-based high-thermal-conductivity modified asphalt mixture according to claim 6, characterized by comprising the following steps: the calcination temperature in the step d of the step S2 is 300-500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011443600.7A CN112552699A (en) | 2020-12-08 | 2020-12-08 | Carbon fiber-based high-thermal-conductivity modified asphalt mixture and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011443600.7A CN112552699A (en) | 2020-12-08 | 2020-12-08 | Carbon fiber-based high-thermal-conductivity modified asphalt mixture and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112552699A true CN112552699A (en) | 2021-03-26 |
Family
ID=75062841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011443600.7A Pending CN112552699A (en) | 2020-12-08 | 2020-12-08 | Carbon fiber-based high-thermal-conductivity modified asphalt mixture and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112552699A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115043624A (en) * | 2022-06-11 | 2022-09-13 | 山东中建西部建设有限公司 | Erosion-resistant large-volume concrete and preparation method thereof |
| CN115216159A (en) * | 2022-07-29 | 2022-10-21 | 邰惠仙 | Oil-proof high-temperature-resistant asphalt and preparation method thereof |
| CN115926482A (en) * | 2022-11-28 | 2023-04-07 | 张晓东 | High-thermal-conductivity asphalt mixture and preparation method thereof |
| CN116514458A (en) * | 2023-07-03 | 2023-08-01 | 山东寿光鲁清石化有限公司 | Asphalt mixture and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285378A (en) * | 2000-09-18 | 2001-02-28 | 梁清源 | Asphalt copolyolefines compound material and preparation process thereof |
| CN101074542A (en) * | 2006-05-21 | 2007-11-21 | 淄博矿业集团有限责任公司 | Method for modifying and producing waste asphalt bamboo fibre and its apparatus |
| CN103865496A (en) * | 2012-12-14 | 2014-06-18 | 深圳市纳宇材料技术有限公司 | Electricity-insulation heat-conduction powder and material, and preparation methods thereof |
| CN109589979A (en) * | 2017-09-30 | 2019-04-09 | 黑龙江大学 | A kind of metal oxide/carbon material compound and its preparation method and application |
| CN110482909A (en) * | 2019-08-13 | 2019-11-22 | 南京林业大学 | High heat conducting nano carbon fiber modifying asphalt preparation method |
| CN110776657A (en) * | 2019-11-05 | 2020-02-11 | 株洲时代新材料科技股份有限公司 | High-thermal-conductivity polyimide film and preparation method thereof |
| CN112032227A (en) * | 2020-08-18 | 2020-12-04 | 东风商用车有限公司 | Friction plate material and preparation method and application thereof |
-
2020
- 2020-12-08 CN CN202011443600.7A patent/CN112552699A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285378A (en) * | 2000-09-18 | 2001-02-28 | 梁清源 | Asphalt copolyolefines compound material and preparation process thereof |
| CN101074542A (en) * | 2006-05-21 | 2007-11-21 | 淄博矿业集团有限责任公司 | Method for modifying and producing waste asphalt bamboo fibre and its apparatus |
| CN103865496A (en) * | 2012-12-14 | 2014-06-18 | 深圳市纳宇材料技术有限公司 | Electricity-insulation heat-conduction powder and material, and preparation methods thereof |
| CN109589979A (en) * | 2017-09-30 | 2019-04-09 | 黑龙江大学 | A kind of metal oxide/carbon material compound and its preparation method and application |
| CN110482909A (en) * | 2019-08-13 | 2019-11-22 | 南京林业大学 | High heat conducting nano carbon fiber modifying asphalt preparation method |
| CN110776657A (en) * | 2019-11-05 | 2020-02-11 | 株洲时代新材料科技股份有限公司 | High-thermal-conductivity polyimide film and preparation method thereof |
| CN112032227A (en) * | 2020-08-18 | 2020-12-04 | 东风商用车有限公司 | Friction plate material and preparation method and application thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115043624A (en) * | 2022-06-11 | 2022-09-13 | 山东中建西部建设有限公司 | Erosion-resistant large-volume concrete and preparation method thereof |
| CN115216159A (en) * | 2022-07-29 | 2022-10-21 | 邰惠仙 | Oil-proof high-temperature-resistant asphalt and preparation method thereof |
| CN115926482A (en) * | 2022-11-28 | 2023-04-07 | 张晓东 | High-thermal-conductivity asphalt mixture and preparation method thereof |
| CN116514458A (en) * | 2023-07-03 | 2023-08-01 | 山东寿光鲁清石化有限公司 | Asphalt mixture and preparation method thereof |
| CN116514458B (en) * | 2023-07-03 | 2023-09-08 | 山东寿光鲁清石化有限公司 | Asphalt mixture and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112552699A (en) | Carbon fiber-based high-thermal-conductivity modified asphalt mixture and preparation method thereof | |
| CN110951254A (en) | Boron nitride composite high-thermal-conductivity insulating polymer composite material and preparation method thereof | |
| CN107434378B (en) | Low-carbon environment-friendly waste asphalt mixture composite permeable mortar for sponge city and preparation method thereof | |
| CN108641386B (en) | Environment-friendly anti-rutting modified asphalt and preparation method thereof | |
| CN110607041B (en) | Road asphalt additive and preparation method thereof | |
| CN110845224A (en) | High-strength anti-aging porcelain insulator and preparation method thereof | |
| CN112551948A (en) | Preparation process of ceramsite asphalt pavement material | |
| CN112723801A (en) | Cement concrete pavement rapid repairing material and preparation method thereof | |
| CN109294595B (en) | Fly ash-based soil curing agent and preparation method and application thereof | |
| CN109574583B (en) | High-strength concrete and preparation method thereof | |
| CN109133802B (en) | Cement-based material for adsorbing and curing chloride ions and preparation method thereof | |
| CN112979198B (en) | Modified montmorillonite self-repairing agent and preparation method and application thereof | |
| CN110451848A (en) | The modified pitch and its preparation method that gather materials towards poor quality and application | |
| CN102408656B (en) | Anti-freeze nanometer titanium dioxide composite material and application thereof | |
| CN107414688B (en) | Rail grinding wheel | |
| CN108410138B (en) | Concrete | |
| CN116444945A (en) | High-heat-conductivity hollow boron nitride microsphere composite polymer material and preparation method thereof | |
| CN113831088B (en) | Phase-change large-volume concrete and preparation method thereof | |
| CN116553880A (en) | Crack-resistant and antifreezing cement-based material, and preparation method and application thereof | |
| CN111893833B (en) | Asphalt pavement with low-noise and anti-skid functions and preparation method thereof | |
| CN110713692A (en) | Preparation method of micro-nano co-doped composite insulating dielectric material, composite filler for insulating dielectric material and insulating dielectric material | |
| CN104356851A (en) | Anticorrosive nanocoating | |
| CN113861706A (en) | Modified asphalt containing nano material and application thereof | |
| Meng et al. | Effect of Carbon Fiber on Microwave Deicing Efficiency of Pavement Concrete | |
| CN114920539B (en) | High-toughness radiation-resistant aerogel heat-insulating material and preparation method thereof |
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 |