CN114316611A - Composite modified asphalt based on epoxy resin rubber powder and mixture - Google Patents
Composite modified asphalt based on epoxy resin rubber powder and mixture Download PDFInfo
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Abstract
The invention discloses a composite modified asphalt based on epoxy resin rubber powder and a mixture, wherein during preparation, the spiro phosphate is prepared by 2, 4-dihydroxy benzophenone, triethylamine, chlorinated spiro phosphate and other components, the spiro phosphate has a skeleton structure with excellent flame retardant property and ultraviolet absorption property, and the o-hydroxy benzophenone has excellent ultraviolet absorption property, so that the spiro phosphate is introduced into the asphalt, the flame retardant property of the asphalt can be improved, the ultraviolet aging resistance of the prepared asphalt mixture is improved to a certain extent, and the practicability is more excellent. The invention has reasonable process design and proper component proportion, the prepared mixture has excellent mechanical property, temperature resistance, water resistance, solvent corrosion resistance and fatigue resistance, and meanwhile, the smoke release amount is obviously reduced during construction, and the invention has higher practicability.
Description
Technical Field
The invention relates to the technical field of asphalt, in particular to composite modified asphalt based on epoxy resin glue powder and a mixture.
Background
The asphalt mixture is a composite material, mainly comprising asphalt, coarse aggregate, fine aggregate, mineral powder, polymer and wood cellulose, and is formed into different structures by mixing the materials with different qualities and quantities, and has different mechanical properties. The most common types of asphalt mixtures used in engineering are two: one is asphalt concrete mixture, which is a mixture of mineral aggregate which is composed of coarse aggregate, fine aggregate and filler in proper proportion and meets the specified gradation, and the residual void ratio is less than 10 percent after the mineral aggregate is mixed with asphalt binder and compacted; the other is a bituminous macadam mixture, which is a mixture with residual porosity of more than 10% after mixing and compacting coarse aggregates, fine aggregates and fillers (or no fillers) in a proper proportion with bitumen, and is called as a bituminous macadam mixture for short.
At present, in the processing technology of asphalt mixtures on the market, the problems of large mixing smoke, poor water stability of the asphalt mixtures and the like mostly exist, and inconvenience is brought to the actual use of the actual asphalt mixtures.
Disclosure of Invention
The invention aims to provide composite modified asphalt and a mixture based on epoxy resin rubber powder, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a composite modified asphalt based on epoxy resin rubber powder comprises the following steps:
(1) uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 75-80 ℃, and carrying out heat preservation reaction to obtain a polyurethane prepolymer; uniformly stirring the polyurethane prepolymer, the spiro phosphate and the epoxy resin to obtain modified epoxy resin;
(2) taking the matrix asphalt, heating to 160 ℃ at 130-.
The optimized scheme comprises the following steps:
(1) uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 75-80 ℃, and carrying out heat preservation reaction for 1.5-2h to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 20-30min at 80-90 ℃, heating to 110-120 ℃, stirring for 20-30min, cooling to 80-90 ℃, and stirring for 20-30min to obtain modified epoxy resin;
(2) taking the substrate asphalt, heating to 160 ℃ for 130-.
According to a more optimized scheme, in the step (2), the raw materials of each component are as follows by weight: 0.5-2.5 parts of modified epoxy resin, 110 parts of matrix asphalt, 0.2-1.5 parts of curing agent, 2-12 parts of compatilizer, 1-5 parts of plasticizer, 1-5 parts of assistant and 10-25 parts of rubber powder.
According to a more optimized scheme, in the step (1), the preparation method of the spiro phosphate comprises the following steps: taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 85-90 ℃, stirring until dissolving, adding triethylamine and chlorinated spiro phosphate, continuing to react for 12-16h, cooling after the reaction, carrying out suction filtration to remove the toluene, washing, and carrying out vacuum drying to obtain the spiro phosphate.
In an optimized scheme, the auxiliary agent is one or more of tourmaline and zeolite; the curing agent is one or more of polyazelaic anhydride, polysebacic anhydride and fatty amine.
According to an optimized scheme, the rubber powder is prepared by crushing and grinding waste tires, and the rubber powder is 40-60 meshes.
According to an optimized scheme, the composite modified asphalt is prepared according to the method, and then the composite modified asphalt, the mineral powder, the aggregate, the modified graphene oxide and the water-absorbing adhesive are uniformly stirred at the temperature of 180 ℃ to obtain the mixture according to the asphalt mixture prepared from the composite modified asphalt.
According to an optimized scheme, the preparation method of the modified graphene oxide comprises the following steps:
taking graphene oxide and absolute ethyl alcohol, performing ultrasonic dispersion for 20-30min, stirring at 40 ℃ until the mixture is uniform, then adding tetrabutyl titanate, adding deionized water at 75-80 ℃, stirring for reaction for 4-5h, cooling, washing with deionized water, and performing vacuum drying at 60-70 ℃ to obtain loaded graphene oxide;
and (3) mixing and stirring the loaded graphene oxide and the amino trimethylene phosphoric acid aqueous solution for 20-24h, washing the mixture with deionized water to be neutral, and drying the mixture in vacuum to obtain the modified graphene oxide.
According to the optimized scheme, the preparation method of the water-absorbing glue comprises the following steps: taking acrylic acid, adding sodium hydroxide for neutralization, adding ammonium persulfate, N-methylene-bisacrylamide and 1/2 hollow carbon spheres, stirring for 1.5-2h at 65-70 ℃, adding 1/2 hollow carbon spheres, continuously stirring for 20-30min, washing with ethanol after reaction, and vacuum drying to obtain the water-absorbing adhesive.
In an optimized scheme, the aggregate is one or more of limestone and basalt.
Compared with the prior art, the invention has the following beneficial effects:
the application discloses compound modified asphalt and mixture based on epoxy resin rubber powder, when preparing, this application is earlier through components such as 2, 4-dihydroxy benzophenone, triethylamine, chlorinated spiro phosphate, prepare and obtain spiro phosphate, spiro phosphate skeleton structure has more excellent flame retardant efficiency and ultraviolet absorptivity, and o-hydroxy benzophenone skeleton structure has excellent ultraviolet absorptivity again, consequently introduce spiro phosphate in the asphalt, on the one hand not only can improve its flame retardant property, the anti ultraviolet ageing resistance of the bituminous mixture that obtains of preparation also obtains certain promotion, the practicality is more excellent.
On the basis, polyurethane and epoxy resin are introduced into the modified asphalt for modification, and the asphalt is modified through the cooperation of the polyurethane and the epoxy resin, so that the flexibility of the epoxy resin can be effectively improved through the introduction of the polyurethane, and the prepared asphalt has the advantages of high strength, excellent high-temperature performance and excellent ageing resistance; meanwhile, the asphalt mixture prepared from the composite modified asphalt has excellent high temperature resistance and water stability.
After the preparation process of the composite modified asphalt is disclosed, mixing the components of the composite modified asphalt, mineral powder, aggregate, modified graphene oxide and water-absorbing adhesive to obtain an asphalt mixture; according to the scheme, firstly titanium dioxide is generated on the surface of graphene oxide in situ, on one hand, the existence of the titanium dioxide is matched with spiro phosphate to further improve the ultraviolet aging resistance of the asphalt mixture, and on the other hand, the titanium dioxide generated on the surface of the graphene oxide in situ can avoid the agglomeration of the graphene oxide to improve the dispersion performance of the graphene oxide; however, due to the fact that the graphene oxide is of a layered structure, the dispersibility of the graphene oxide is improved, the difficulty in entering of external water media is reduced, and the waterproof performance of the asphalt mixture is further improved.
In the process of preparing the water-absorbing glue, the application discloses that acrylic acid is taken, sodium hydroxide is added for neutralization, ammonium persulfate, N-methylene-bisacrylamide and 1/2 hollow carbon spheres are added, the mixture is stirred for 1.5-2 hours at 65-70 ℃, and 1/2 amount of hollow carbon spheres are added, so that the hollow carbon spheres are added in batches, the hollow carbon spheres are added in the process because the surfaces of the hollow carbon spheres are coated with the water-absorbing glue, the hollow carbon spheres are added at the moment, partially coated in the water-absorbing glue and partially embedded on the surface of the water-absorbing glue, the hollow carbon spheres are used as a core body, the core body can be used as a reservoir to match the water-absorbing glue action on the surface to greatly reduce the erosion of a water medium, and the hollow carbon spheres on the surface of the water-absorbing glue and tourmaline have a synergistic effect to absorb smoke generated in the mixing process of an asphalt mixture, and the environmental pollution is reduced.
The invention discloses composite modified asphalt based on epoxy resin rubber powder and a mixture, the process design is reasonable, the component proportion is proper, the prepared mixture has excellent mechanical property, temperature resistance, water resistance, solvent corrosion resistance and fatigue resistance, and meanwhile, the smoke release amount is obviously reduced during construction, and the invention has higher 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 composite modified asphalt based on epoxy resin rubber powder comprises the following steps:
(1) taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 85 ℃, stirring until the temperature is raised to be dissolved, adding triethylamine and chlorinated spiro phosphate, continuing to react for 16 hours, cooling after the reaction, removing the toluene by suction filtration, washing, and drying in vacuum to obtain the spiro phosphate. The mol ratio of the 2, 4-dihydroxy benzophenone, the triethylamine and the chlorinated spiro-phosphate is 2: 1: 3.
uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 75 ℃, and carrying out heat preservation reaction for 2 hours to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 30min at 80 ℃, heating to 110 ℃, stirring for 30min, cooling to 80 ℃, and stirring for 30min to obtain modified epoxy resin; the mass ratio of the toluene diisocyanate to the ethylenediamine polyether is 3: 1; the mass ratio of the polyurethane prepolymer to the spiro phosphate to the epoxy resin is 2: 1: 3.
(2) taking 105 parts of matrix asphalt, heating to 140 ℃, adding 0.3 part of curing agent, 2 parts of compatilizer, 1.5 parts of plasticizer and 10 parts of rubber powder, stirring for 30min, adding 0.5 part of modified epoxy resin and 1 part of auxiliary agent, stirring and shearing for 10min at 180 ℃, adding 0.2% of calcium chloride, and developing for 2h to obtain the composite modified asphalt.
In the embodiment, the auxiliary agent is tourmaline; the curing agent is polyazelaic anhydride. The rubber powder is prepared by crushing and grinding waste tires, and the rubber powder is 40 meshes.
Example 2:
a composite modified asphalt based on epoxy resin rubber powder comprises the following steps:
(1) taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 88 ℃, stirring until dissolving, adding triethylamine and chlorinated spiro phosphate, continuing to react for 14 hours, cooling after the reaction, removing the toluene by suction filtration, washing, and drying in vacuum to obtain the spiro phosphate. The mol ratio of the 2, 4-dihydroxy benzophenone, the triethylamine and the chlorinated spiro-phosphate is 2: 1: 3.
uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 78 ℃, and carrying out heat preservation reaction for 1.8h to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 25min at 85 ℃, heating to 115 ℃, stirring for 25min, cooling to 85 ℃, and stirring for 25min to obtain modified epoxy resin; the mass ratio of the toluene diisocyanate to the ethylenediamine polyether is 3: 1; the mass ratio of the polyurethane prepolymer to the spiro phosphate to the epoxy resin is 2: 1: 3.
(2) taking 105 parts of matrix asphalt, heating to 145 ℃, adding 0.3 part of curing agent, 2 parts of compatilizer, 1.5 parts of plasticizer and 10 parts of rubber powder, stirring for 25min, adding 0.5 part of modified epoxy resin and 1 part of auxiliary agent, stirring for 9min at 175 ℃, adding 0.2% of calcium chloride, and developing for 2h to obtain the composite modified asphalt.
In the embodiment, the auxiliary agent is tourmaline; the curing agent is polyazelaic anhydride. The rubber powder is prepared by crushing and grinding waste tires, and the rubber powder is 40 meshes.
Example 3:
a composite modified asphalt based on epoxy resin rubber powder comprises the following steps:
(1) taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 90 ℃, stirring until the temperature is dissolved, adding triethylamine and chlorinated spiro phosphate, continuing to react for 12 hours, cooling after the reaction, removing the toluene by suction filtration, washing, and drying in vacuum to obtain the spiro phosphate. The mol ratio of the 2, 4-dihydroxy benzophenone, the triethylamine and the chlorinated spiro-phosphate is 2: 1: 3.
uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 80 ℃, and carrying out heat preservation reaction for 1.5h to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 20min at 90 ℃, heating to 120 ℃, stirring for 20min, cooling to 90 ℃, and stirring for 20min to obtain modified epoxy resin; the mass ratio of the toluene diisocyanate to the ethylenediamine polyether is 3: 1; the mass ratio of the polyurethane prepolymer to the spiro phosphate to the epoxy resin is 2: 1: 3.
(2) taking 105 parts of matrix asphalt, heating to 150 ℃, adding 0.3 part of curing agent, 2 parts of compatilizer, 1.5 parts of plasticizer and 10 parts of rubber powder, stirring for 30min, adding 0.5 part of modified epoxy resin and 1 part of auxiliary agent, stirring for 8min at 170 ℃, adding 0.2% of calcium chloride, and developing for 2h to obtain the composite modified asphalt.
In the embodiment, the auxiliary agent is tourmaline; the curing agent is polyazelaic anhydride. The rubber powder is prepared by crushing and grinding waste tires, and the rubber powder is 40 meshes.
And (3) detection test:
the composite modified asphalt prepared in examples 1 to 3 was tested according to the method specified in the test protocol for road engineering asphalt and asphalt mixture (JTGE20-2011), and the specific test data were as follows:
example 4:
an asphalt mixture comprising the steps of:
(1) taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 88 ℃, stirring until dissolving, adding triethylamine and chlorinated spiro phosphate, continuing to react for 14 hours, cooling after the reaction, removing the toluene by suction filtration, washing, and drying in vacuum to obtain the spiro phosphate. The mol ratio of the 2, 4-dihydroxy benzophenone, the triethylamine and the chlorinated spiro-phosphate is 2: 1: 3.
uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 78 ℃, and carrying out heat preservation reaction for 1.8h to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 25min at 85 ℃, heating to 115 ℃, stirring for 25min, cooling to 85 ℃, and stirring for 25min to obtain modified epoxy resin; the mass ratio of the toluene diisocyanate to the ethylenediamine polyether is 3: 1; the mass ratio of the polyurethane prepolymer to the spiro phosphate to the epoxy resin is 2: 1: 3.
(2) taking 105 parts of matrix asphalt, heating to 150 ℃, adding 1 part of curing agent, 4 parts of compatilizer, 4 parts of plasticizer and 18 parts of rubber powder, stirring for 25min, adding 2.5 parts of modified epoxy resin and 2.5 parts of auxiliary agent, stirring and shearing for 9min at 170 ℃, adding 0.2% calcium chloride, and developing for 2h to obtain the composite modified asphalt.
In the embodiment, the auxiliary agent is tourmaline; the curing agent is polyazelaic anhydride. The rubber powder is prepared by crushing and grinding waste tires, and the rubber powder is 40 meshes.
(3) Taking graphene oxide and absolute ethyl alcohol, performing ultrasonic dispersion for 20min, stirring at 40 ℃ until the mixture is uniform, then adding tetrabutyl titanate, adding deionized water at 75 ℃, stirring for reaction for 5h, cooling, washing with deionized water, and performing vacuum drying at 60 ℃ to obtain loaded graphene oxide;
and (3) mixing and stirring the loaded graphene oxide and the amino trimethylene phosphoric acid aqueous solution for 20h, washing the mixture with deionized water to be neutral, and drying the mixture in vacuum to obtain the modified graphene oxide.
(4) Taking acrylic acid, adding sodium hydroxide for neutralization, adding ammonium persulfate, N-methylene-bisacrylamide and 1/2 hollow carbon spheres, stirring for 2 hours at 65 ℃, adding 1/2 hollow carbon spheres, continuously stirring for 20 minutes, washing with ethanol after reaction, and drying in vacuum to obtain the water-absorbing adhesive.
(5) Taking the composite modified asphalt, the mineral powder, the aggregate, the modified graphene oxide and the water-absorbing adhesive, and uniformly stirring at 170 ℃ to obtain a mixture. The mass ratio of the composite modified asphalt to the aggregate to the mineral powder is 6: 95: 1: 4: 3. the aggregate is limestone.
Example 5:
an asphalt mixture comprising the steps of:
(1) taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 88 ℃, stirring until dissolving, adding triethylamine and chlorinated spiro phosphate, continuing to react for 14 hours, cooling after the reaction, removing the toluene by suction filtration, washing, and drying in vacuum to obtain the spiro phosphate. The mol ratio of the 2, 4-dihydroxy benzophenone, the triethylamine and the chlorinated spiro-phosphate is 2: 1: 3.
uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 78 ℃, and carrying out heat preservation reaction for 1.8h to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 25min at 85 ℃, heating to 115 ℃, stirring for 25min, cooling to 85 ℃, and stirring for 25min to obtain modified epoxy resin; the mass ratio of the toluene diisocyanate to the ethylenediamine polyether is 3: 1; the mass ratio of the polyurethane prepolymer to the spiro phosphate to the epoxy resin is 2: 1: 3.
(2) taking 105 parts of matrix asphalt, heating to 150 ℃, adding 1 part of curing agent, 4 parts of compatilizer, 4 parts of plasticizer and 18 parts of rubber powder, stirring for 25min, adding 2.5 parts of modified epoxy resin and 2.5 parts of auxiliary agent, stirring and shearing for 9min at 170 ℃, adding 0.2% calcium chloride, and developing for 2h to obtain the composite modified asphalt.
In the embodiment, the auxiliary agent is tourmaline; the curing agent is polyazelaic anhydride. The rubber powder is prepared by crushing and grinding waste tires, and the rubber powder is 40 meshes.
(3) Taking graphene oxide and absolute ethyl alcohol, performing ultrasonic dispersion for 25min, stirring at 40 ℃ until the mixture is uniform, then adding tetrabutyl titanate, adding deionized water at 78 ℃, stirring and reacting for 4.5h, cooling, washing with deionized water, and performing vacuum drying at 65 ℃ to obtain loaded graphene oxide;
and (3) mixing and stirring the loaded graphene oxide and the amino trimethylene phosphoric acid aqueous solution for 22h, washing the mixture with deionized water to be neutral, and drying the mixture in vacuum to obtain the modified graphene oxide.
(4) Taking acrylic acid, adding sodium hydroxide for neutralization, adding ammonium persulfate, N-methylene-bisacrylamide and 1/2 hollow carbon spheres, stirring for 1.8h at 68 ℃, adding 1/2 hollow carbon spheres, continuously stirring for 25min, washing with ethanol after reaction, and vacuum drying to obtain the water-absorbing adhesive.
(5) Taking the composite modified asphalt, the mineral powder, the aggregate, the modified graphene oxide and the water-absorbing adhesive, and uniformly stirring at 165 ℃ to obtain a mixture. The mass ratio of the composite modified asphalt to the aggregate to the mineral powder is 6: 95: 1: 4: 3. the aggregate is limestone.
Example 6:
an asphalt mixture comprising the steps of:
(1) taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 88 ℃, stirring until dissolving, adding triethylamine and chlorinated spiro phosphate, continuing to react for 14 hours, cooling after the reaction, removing the toluene by suction filtration, washing, and drying in vacuum to obtain the spiro phosphate. The mol ratio of the 2, 4-dihydroxy benzophenone, the triethylamine and the chlorinated spiro-phosphate is 2: 1: 3.
uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 78 ℃, and carrying out heat preservation reaction for 1.8h to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 25min at 85 ℃, heating to 115 ℃, stirring for 25min, cooling to 85 ℃, and stirring for 25min to obtain modified epoxy resin; the mass ratio of the toluene diisocyanate to the ethylenediamine polyether is 3: 1; the mass ratio of the polyurethane prepolymer to the spiro phosphate to the epoxy resin is 2: 1: 3.
(2) taking 105 parts of matrix asphalt, heating to 150 ℃, adding 1 part of curing agent, 4 parts of compatilizer, 4 parts of plasticizer and 18 parts of rubber powder, stirring for 25min, adding 2.5 parts of modified epoxy resin and 2.5 parts of auxiliary agent, stirring and shearing for 9min at 170 ℃, adding 0.2% calcium chloride, and developing for 2h to obtain the composite modified asphalt.
In the embodiment, the auxiliary agent is tourmaline; the curing agent is polyazelaic anhydride. The rubber powder is prepared by crushing and grinding waste tires, and the rubber powder is 40 meshes.
(3) Taking graphene oxide and absolute ethyl alcohol, performing ultrasonic dispersion for 30min, stirring at 40 ℃ until the mixture is uniform, then adding tetrabutyl titanate, adding deionized water at 80 ℃, stirring for reaction for 4h, cooling, washing with deionized water, and performing vacuum drying at 70 ℃ to obtain loaded graphene oxide;
and (3) mixing and stirring the loaded graphene oxide and the amino trimethylene phosphoric acid aqueous solution for 24h, washing the mixture with deionized water to be neutral, and drying the mixture in vacuum to obtain the modified graphene oxide.
(4) Taking acrylic acid, adding sodium hydroxide for neutralization, adding ammonium persulfate, N-methylene-bisacrylamide and 1/2 hollow carbon spheres, stirring for 1.5h at 70 ℃, adding 1/2 hollow carbon spheres, continuously stirring for 30min, washing with ethanol after reaction, and vacuum drying to obtain the water-absorbing adhesive.
(5) Taking the composite modified asphalt, the mineral powder, the aggregate, the modified graphene oxide and the water-absorbing adhesive, and uniformly stirring at 160 ℃ to obtain a mixture. The mass ratio of the composite modified asphalt to the aggregate to the mineral powder is 6: 95: 1: 4: 3. the aggregate is limestone.
Taking example 5 as a test group, a control test is carried out, specifically, comparative example 1 and comparative example 2
Comparative example 1: in comparative example 1, no water-absorbing glue was introduced, and the rest of the process was unchanged.
An asphalt mixture comprising the steps of:
(1) taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 88 ℃, stirring until dissolving, adding triethylamine and chlorinated spiro phosphate, continuing to react for 14 hours, cooling after the reaction, removing the toluene by suction filtration, washing, and drying in vacuum to obtain the spiro phosphate. The mol ratio of the 2, 4-dihydroxy benzophenone, the triethylamine and the chlorinated spiro-phosphate is 2: 1: 3.
uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 78 ℃, and carrying out heat preservation reaction for 1.8h to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 25min at 85 ℃, heating to 115 ℃, stirring for 25min, cooling to 85 ℃, and stirring for 25min to obtain modified epoxy resin; the mass ratio of the toluene diisocyanate to the ethylenediamine polyether is 3: 1; the mass ratio of the polyurethane prepolymer to the spiro phosphate to the epoxy resin is 2: 1: 3.
(2) taking 105 parts of matrix asphalt, heating to 150 ℃, adding 1 part of curing agent, 4 parts of compatilizer, 4 parts of plasticizer and 18 parts of rubber powder, stirring for 25min, adding 2.5 parts of modified epoxy resin and 2.5 parts of auxiliary agent, stirring and shearing for 9min at 170 ℃, adding 0.2% calcium chloride, and developing for 2h to obtain the composite modified asphalt.
In the embodiment, the auxiliary agent is tourmaline; the curing agent is polyazelaic anhydride. The rubber powder is prepared by crushing and grinding waste tires, and the rubber powder is 40 meshes.
(3) Taking graphene oxide and absolute ethyl alcohol, performing ultrasonic dispersion for 25min, stirring at 40 ℃ until the mixture is uniform, then adding tetrabutyl titanate, adding deionized water at 78 ℃, stirring and reacting for 4.5h, cooling, washing with deionized water, and performing vacuum drying at 65 ℃ to obtain loaded graphene oxide;
and (3) mixing and stirring the loaded graphene oxide and the amino trimethylene phosphoric acid aqueous solution for 22h, washing the mixture with deionized water to be neutral, and drying the mixture in vacuum to obtain the modified graphene oxide.
(4) Taking the composite modified asphalt, the mineral powder, the aggregate, the modified graphene oxide and the water-absorbing adhesive, and uniformly stirring at 165 ℃ to obtain a mixture. The mass ratio of the composite modified asphalt to the aggregate to the mineral powder is 6: 95: 1: 4: 3. the aggregate is limestone.
And (3) detection test:
1. the composite modified asphalt mixtures prepared in examples 4 to 6 and comparative example 1 were respectively tested according to the method specified in road engineering asphalt and asphalt mixture test protocol (JTGE20-2011), and the specific detection data are as follows:
2. the asphalt mixture prepared by the method has the advantages of excellent flame retardant effect, obvious smoke suppression effect in the mixing process, low smoke release amount, limit oxygen index larger than 31 and excellent processing effect.
And (4) conclusion: the invention discloses composite modified asphalt based on epoxy resin rubber powder and a mixture, the process design is reasonable, the component proportion is proper, the prepared mixture has excellent mechanical property, temperature resistance, water resistance, solvent corrosion resistance and fatigue resistance, and meanwhile, the smoke release amount is obviously reduced during construction, and the invention has higher practicability.
Finally, it should be noted that: although the present invention 2 has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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. A composite modified asphalt based on epoxy resin rubber powder is characterized in that: the method comprises the following steps:
(1) uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 75-80 ℃, and carrying out heat preservation reaction to obtain a polyurethane prepolymer; uniformly stirring the polyurethane prepolymer, the spiro phosphate and the epoxy resin to obtain modified epoxy resin;
(2) taking the substrate asphalt, heating to 160 ℃ for 130-.
2. The composite modified asphalt based on epoxy resin glue powder as claimed in claim 1, wherein: the method comprises the following steps:
(1) uniformly stirring toluene diisocyanate and ethylenediamine polyether, heating to 75-80 ℃, and carrying out heat preservation reaction for 1.5-2h to obtain a polyurethane prepolymer; taking the polyurethane prepolymer, the spiro phosphate and the epoxy resin, stirring for 20-30min at 80-90 ℃, heating to 110-120 ℃, stirring for 20-30min, cooling to 80-90 ℃, and stirring for 20-30min to obtain modified epoxy resin;
(2) taking the substrate asphalt, heating to 160 ℃ for 130-.
3. The composite modified asphalt based on epoxy resin glue powder as claimed in claim 2, wherein: in the step (2), the raw materials of each component are calculated by weight: 0.5-2.5 parts of modified epoxy resin, 110 parts of matrix asphalt, 0.2-1.5 parts of curing agent, 2-12 parts of compatilizer, 1-5 parts of plasticizer, 1-5 parts of assistant and 10-25 parts of rubber powder.
4. The composite modified asphalt based on epoxy resin glue powder as claimed in claim 2, wherein: in the step (1), the preparation method of the spiro phosphate comprises the following steps: taking 2, 4-dihydroxy benzophenone and toluene, uniformly mixing, heating to 85-90 ℃, stirring until dissolving, adding triethylamine and chlorinated spiro phosphate, continuing to react for 12-16h, cooling after the reaction, carrying out suction filtration to remove the toluene, washing, and carrying out vacuum drying to obtain the spiro phosphate.
5. The composite modified asphalt based on epoxy resin glue powder as claimed in claim 2, wherein: the auxiliary agent is any one or more of tourmaline and zeolite; the curing agent is one or more of polyazelaic anhydride, polysebacic anhydride and fatty amine.
6. The composite modified asphalt based on epoxy resin glue powder as claimed in claim 2, wherein: the rubber powder is prepared by crushing and grinding waste tires, and is 40-60 meshes.
7. An asphalt mixture prepared from the composite modified asphalt of any one of claims 1 to 6, which is characterized in that: taking the composite modified asphalt, the mineral powder, the aggregate, the modified graphene oxide and the water-absorbing adhesive prepared by any one of the claims 1 to 6, and uniformly stirring at the temperature of 160 ℃ and 180 ℃ to obtain a mixture.
8. The asphalt mixture according to claim 7, wherein: the preparation method of the modified graphene oxide comprises the following steps:
taking graphene oxide and absolute ethyl alcohol, performing ultrasonic dispersion for 20-30min, stirring at 40 ℃ until the mixture is uniform, then adding tetrabutyl titanate, adding deionized water at 75-80 ℃, stirring for reaction for 4-5h, cooling, washing with deionized water, and performing vacuum drying at 60-70 ℃ to obtain loaded graphene oxide;
and (3) mixing and stirring the loaded graphene oxide and the amino trimethylene phosphoric acid aqueous solution for 20-24h, washing the mixture with deionized water to be neutral, and drying the mixture in vacuum to obtain the modified graphene oxide.
9. The asphalt mixture according to claim 7, wherein: the preparation method of the water-absorbing adhesive comprises the following steps: taking acrylic acid, adding sodium hydroxide for neutralization, adding ammonium persulfate, N-methylene-bisacrylamide and 1/2 hollow carbon spheres, stirring for 1.5-2h at 65-70 ℃, adding 1/2 hollow carbon spheres, continuously stirring for 20-30min, washing with ethanol after reaction, and vacuum drying to obtain the water-absorbing adhesive.
10. The asphalt mixture according to claim 7, wherein: the aggregate is one or more of limestone and basalt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111218337.6A CN114316611A (en) | 2021-10-20 | 2021-10-20 | Composite modified asphalt based on epoxy resin rubber powder and mixture |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115353326A (en) * | 2022-07-27 | 2022-11-18 | 魏玉芝 | Reflective anti-vehicle-mark asphalt and preparation method thereof |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890344A (en) * | 2010-07-27 | 2010-11-24 | 华东理工大学 | Preparation method of graphene/titanium dioxide composite photocatalyst |
| CN104513276A (en) * | 2013-09-27 | 2015-04-15 | 青岛市首胜实业有限公司 | Improved synthesis technology of chlorinated spiro-phosphate ester |
| CN107244667A (en) * | 2017-05-23 | 2017-10-13 | 深圳大学 | A kind of amphipathic aeroge and preparation method |
| CN107722361A (en) * | 2017-09-26 | 2018-02-23 | 同济大学 | A kind of preparation method of the magnesium-supported redox graphene fire retardant of nanometer of ATMP |
| CN108219153A (en) * | 2017-11-30 | 2018-06-29 | 中南民族大学 | Siliceous hyperbranched poly phosphamide expansion type flame retardant and its preparation method and application |
| CN108250666A (en) * | 2018-01-18 | 2018-07-06 | 同济大学 | A kind of amino trimethylene phosphonic salt load graphene oxide activeness and quietness phenolic foam material and preparation method thereof |
| CN108342092A (en) * | 2018-02-11 | 2018-07-31 | 安徽海德化工科技有限公司 | A kind of casein modified pitch and preparation method thereof |
| CN108752850A (en) * | 2018-05-08 | 2018-11-06 | 上海浦兴路桥建设工程有限公司 | A kind of graphene oxide Modified coloured asphalt cementitious matter and preparation method thereof |
| CN109369957A (en) * | 2018-11-20 | 2019-02-22 | 华南理工大学 | It is a kind of to have both UV absorption and fire-retardant difunctional phosphorus flame retardant and preparation and application |
| CN109401349A (en) * | 2018-11-26 | 2019-03-01 | 长沙理工大学 | A kind of graphene oxide modified pitch and preparation method thereof |
| CN110372844A (en) * | 2019-06-18 | 2019-10-25 | 中路高科(北京)公路技术有限公司 | A kind of polyurethane injecting paste material and preparation method and application |
| CN111732710A (en) * | 2020-06-29 | 2020-10-02 | 合肥精创科技有限公司 | Epoxy modified polyurethane material for mud pump piston and preparation method thereof |
| CN111825388A (en) * | 2020-06-21 | 2020-10-27 | 江阴市新远见工程有限公司 | Modified epoxy asphalt concrete and processing technology thereof |
| CN112480695A (en) * | 2020-11-06 | 2021-03-12 | 安徽工业大学 | Preparation method of graphene modified asphalt and product thereof |
| CN112645643A (en) * | 2020-04-26 | 2021-04-13 | 赵俊 | Environment-friendly warm-mix asphalt mixture |
| CN113773663A (en) * | 2021-10-18 | 2021-12-10 | 陕西理工大学 | Asphalt containing modified nano graphene oxide and asphalt mixture |
-
2021
- 2021-10-20 CN CN202111218337.6A patent/CN114316611A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890344A (en) * | 2010-07-27 | 2010-11-24 | 华东理工大学 | Preparation method of graphene/titanium dioxide composite photocatalyst |
| CN104513276A (en) * | 2013-09-27 | 2015-04-15 | 青岛市首胜实业有限公司 | Improved synthesis technology of chlorinated spiro-phosphate ester |
| CN107244667A (en) * | 2017-05-23 | 2017-10-13 | 深圳大学 | A kind of amphipathic aeroge and preparation method |
| CN107722361A (en) * | 2017-09-26 | 2018-02-23 | 同济大学 | A kind of preparation method of the magnesium-supported redox graphene fire retardant of nanometer of ATMP |
| CN108219153A (en) * | 2017-11-30 | 2018-06-29 | 中南民族大学 | Siliceous hyperbranched poly phosphamide expansion type flame retardant and its preparation method and application |
| CN108250666A (en) * | 2018-01-18 | 2018-07-06 | 同济大学 | A kind of amino trimethylene phosphonic salt load graphene oxide activeness and quietness phenolic foam material and preparation method thereof |
| CN108342092A (en) * | 2018-02-11 | 2018-07-31 | 安徽海德化工科技有限公司 | A kind of casein modified pitch and preparation method thereof |
| CN108752850A (en) * | 2018-05-08 | 2018-11-06 | 上海浦兴路桥建设工程有限公司 | A kind of graphene oxide Modified coloured asphalt cementitious matter and preparation method thereof |
| CN109369957A (en) * | 2018-11-20 | 2019-02-22 | 华南理工大学 | It is a kind of to have both UV absorption and fire-retardant difunctional phosphorus flame retardant and preparation and application |
| CN109401349A (en) * | 2018-11-26 | 2019-03-01 | 长沙理工大学 | A kind of graphene oxide modified pitch and preparation method thereof |
| CN110372844A (en) * | 2019-06-18 | 2019-10-25 | 中路高科(北京)公路技术有限公司 | A kind of polyurethane injecting paste material and preparation method and application |
| CN112645643A (en) * | 2020-04-26 | 2021-04-13 | 赵俊 | Environment-friendly warm-mix asphalt mixture |
| CN111825388A (en) * | 2020-06-21 | 2020-10-27 | 江阴市新远见工程有限公司 | Modified epoxy asphalt concrete and processing technology thereof |
| CN111732710A (en) * | 2020-06-29 | 2020-10-02 | 合肥精创科技有限公司 | Epoxy modified polyurethane material for mud pump piston and preparation method thereof |
| CN112480695A (en) * | 2020-11-06 | 2021-03-12 | 安徽工业大学 | Preparation method of graphene modified asphalt and product thereof |
| CN113773663A (en) * | 2021-10-18 | 2021-12-10 | 陕西理工大学 | Asphalt containing modified nano graphene oxide and asphalt mixture |
Non-Patent Citations (6)
| Title |
|---|
| RUIFENG ZHOU 等: "Mild-method synthesized GO-TiO2 retains oxygen-containing functional groups as an effective adsorbent", 《JOURNAL OF SOLID STATE CHEMISTRY 》 * |
| 刘克非等: "氧化石墨烯改性沥青及其混合料抗老化性能试验研究", 《公路》 * |
| 朱俊材等: "氧化石墨烯改性沥青结合料的性能", 《中国粉体技术》 * |
| 李水平等: "SBS改性沥青基吸水膨胀防水材料的研制", 《石油大学学报(自然科学版)》 * |
| 王延飞: "有机/埃洛石复合高吸水材料的制备及其性能研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
| 邢春静等: "纳米二氧化钛光催化技术在沥青路面材料中的应用研究", 《金属功能材料》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115353326A (en) * | 2022-07-27 | 2022-11-18 | 魏玉芝 | Reflective anti-vehicle-mark asphalt and preparation method thereof |
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