CN109929121B - Asphalt emulsifier, mineral latex asphalt and mineral latex asphalt mixture - Google Patents
Asphalt emulsifier, mineral latex asphalt and mineral latex asphalt mixture Download PDFInfo
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Abstract
The invention belongs to the technical field of emulsifiers, and particularly relates to an asphalt emulsifier, mineral latex asphalt and a mineral latex asphalt mixture. The asphalt emulsifier provided by the invention comprises alkylamide polyamine ether, fatty amine and alcohol amine, wherein the alkylamide polyamine ether has a long-chain end group and has good lipophilicity with asphalt; under the action of fatty amine and alcohol amine, the mineral latex asphalt compatible with the thickening agent and the filler under the weak alkali condition can be obtained after the asphalt is emulsified by the emulsifier, and the mineral latex asphalt is matched with fine sand and water for use to obtain the mineral rubber emulsified asphalt mixture meeting the construction requirement of the fine sand-containing fog seal.
Description
Technical Field
The invention belongs to the technical field of emulsifiers, and particularly relates to an asphalt emulsifier, mineral latex asphalt and a mineral latex asphalt mixture.
Background
The basic requirements of the emulsified asphalt mixture used in the field of preventive maintenance of fine sand-containing fog seal of highways, airport runways and ordinary asphalt roads are that the emulsified asphalt mixture has good fine sand suspension, viscosity adjustability, storage stability and the like. The asphalt emulsifier used in the existing slurry seal and gravel synchronous seal technology is mainly cationic, and when the cationic emulsifier is used for emulsifying asphalt, in order to give full play to the effect of the emulsifier and improve the storage stability of the emulsified asphalt, the pH value needs to be adjusted to 2-3, and strong acid can react with filler to cause the emulsified asphalt to deteriorate; meanwhile, the traditional cation emulsified asphalt has low viscosity, cannot stably suspend fine sand, and cannot meet the construction requirement of a fine sand-containing fog seal.
Disclosure of Invention
The invention aims to provide an asphalt emulsifier, which is used for emulsifying and modifying asphalt to obtain mineral latex asphalt compatible with a thickening agent and a filler under the condition of weak alkali, and the mineral latex asphalt is matched with fine sand and water to obtain a mineral rubber emulsified asphalt mixture meeting the construction requirement of fine sand-containing fog seal.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides an asphalt emulsifier, which comprises alkylamide polyamine ether, fatty amine and alcohol amine, wherein the alkylamide polyamine ether has a structural general formula shown as formula 1:
in the formula 1, R is C13-C19 alkyl, n is 1-4, and m is 1-3.
Preferably, the preparation method of the alkylamide polyamine ether comprises the following steps: and carrying out condensation reaction on fatty acid, polyethylene polyamine and ethylene oxide to obtain the alkylamide polyamine ether.
Preferably, the temperature of the condensation reaction is 100-180 ℃, and the time of the condensation reaction is 1-6 h.
Preferably, the molar ratio of the fatty acid, the polyethylene polyamine and the ethylene oxide is 1 (1-1.1) to 1-3.
Preferably, the fatty amine comprises hexadecylamine and/or octadecylamine; the alcohol amine comprises ethanolamine and/or diethanolamine.
Preferably, the asphalt emulsifier comprises, by mass, 60-90 parts of alkylamide polyamine ether, 8-12 parts of fatty amine and 2-5 parts of alcohol amine.
The invention provides a preparation method of the asphalt emulsifier in the technical scheme, which comprises the following steps:
and mixing the alkyl amide polyamine ether with fatty amine and alcohol amine in sequence to obtain the asphalt emulsifier.
The invention also provides mineral latex asphalt, which comprises asphalt, an asphalt emulsifier, toughening resin, a thickening agent, a filler and water, wherein the asphalt emulsifier is the asphalt emulsifier in the technical scheme or the asphalt emulsifier prepared by the preparation method in the technical scheme.
The invention provides a preparation method of mineral gum emulsified asphalt, which comprises the following steps:
mixing an asphalt emulsifier, a toughening resin and asphalt to obtain a mixture;
mixing the mixture with an aqueous dispersion of a thickener to obtain a thickened material;
diluting the thickening material, and then mixing the obtained diluted material with a filler to obtain the mineral latex asphalt.
The invention provides a mineral rubber emulsified asphalt mixture which comprises, by mass, 100-120 parts of mineral rubber emulsified asphalt, 35-55 parts of fine sand and 8-15 parts of water; the mineral latexed asphalt is the mineral latexed asphalt in the technical scheme or the mineral latexed asphalt prepared by the preparation method in the technical scheme.
The asphalt emulsifier provided by the invention comprises alkylamide polyamine ether, fatty amine and alcohol amine, wherein the structural general formula of the alkylamide polyamine ether is shown as a formula 1:
in the formula 1, R is C13-C19 alkyl, n is 1-4, and m is 1-3. The asphalt emulsifier provided by the invention has the lipophilic end of long-chain alkyl, and has good compatibility with asphalt; the amino in the fatty amine and the alcohol amine has certain cationic property, can improve the adhesive force between the emulsifier and stone, and is favorable for improving the emulsifying effect of the emulsifier.
The invention also utilizes the asphalt emulsifier of the technical scheme to compound to obtain the mineral latex asphalt, which comprises asphalt, an asphalt emulsifier, toughening resin, a thickening agent, filler and water, wherein the asphalt emulsifier is the asphalt emulsifier of the technical scheme. The invention combines the toughening resin and the asphalt emulsifier for use, is favorable for forming a microcapsule structure with the emulsifier as a shell and the asphalt as a capsule core, and has good dispersibility in the aqueous colloidal solution, thereby realizing the emulsification of the asphalt under the condition of not adjusting the pH value of the water phase.
The invention also provides a mineral rubber emulsified asphalt mixture which comprises 100-120 parts of mineral rubber emulsified asphalt, 35-55 parts of fine sand and 8-15 parts of water by mass, wherein the mineral rubber emulsified asphalt is the mineral rubber emulsified asphalt in the technical scheme or the mineral rubber emulsified asphalt prepared by the preparation method in the technical scheme. The mineral latex asphalt provided by the invention has excellent fine sand suspending capacity, emulsified asphalt microcapsule particles can be better attached to and coated on fine gravel, and the obtained mineral latex asphalt mixture meets the construction requirement of a fine sand-containing fog seal.
Drawings
Fig. 1 is a schematic construction diagram of the mineral rubber emulsified asphalt mixture provided by the invention, wherein 1 is a mineral latex asphalt mixture, 2 is a black asphalt pavement surface layer, 3 is a base layer, and 4 is a cushion layer.
Detailed Description
The invention provides an asphalt emulsifier, which comprises alkylamide polyamine ether, fatty amine and alcohol amine, wherein the alkylamide polyamine ether has a structural general formula shown as formula 1:
in the formula 1, R is C13-C19 alkyl, n is 1-4, and m is 1-3.
The asphalt emulsifier provided by the invention comprises alkylamide polyamine ether, wherein the structural general formula of the alkylamide polyamine ether is shown as the formula 1; in the formula 1, R is C13-C19 alkyl, preferably C15-C17 long-chain alkyl. The invention controls the chain length of R between C13 and C19, can improve the lipophilicity of the emulsifier and improve the compatibility of the emulsifier and the asphalt.
In the invention, n in the formula 1 is 1-4, preferably 2-3, and more preferably 2. In the present invention, n is preferably controlled by the selection of the preparation material of the alkylamidopolyamine ether, and further, the preparation material of the alkylamidopolyamine ether preferably includes a fatty acid, a polyethylenepolyamine, and an ethylene oxide. In the invention, the value of n and the selection of the components of the polyethylene polyamine have the following corresponding relationship:
when the polyethylene polyamine is ethylenediamine, the value of n is 1;
when the polyethylene polyamine is diethylenetriamine, the value of n is 2;
when the polyethylene polyamine is triethylene tetramine, the value of n is 3;
when the polyethylene polyamine is tetraethylenepentamine, the value of n is 4;
when the polyethylene polyamine is a mixture of several components, n is a non-integer between 1 and 4.
In the invention, m in the formula 1 is 1-3, preferably 1-2, and more preferably 1-1.5. In the invention, the value of m is controlled by the dosage of the epoxy ethylene in the preparation material of the alkylamide polyamine ether.
In the present invention, the method for producing the alkylamidopolyamine ether preferably includes: and carrying out condensation reaction on fatty acid, polyethylene polyamine and ethylene oxide to obtain the alkylamide polyamine ether.
In the present invention, the production raw material of the alkylamidopolyamine ether preferably includes fatty acid, polyethylene polyamine and ethylene oxide; the fatty acid is preferably represented by RCOO-H, and R is in accordance with the above-mentioned technical scheme and does not repeat here.
In the present invention, the polyethylene polyamine preferably includes one or more of ethylenediamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine, more preferably diethylenetriamine and/or triethylenetetramine, and still more preferably diethylenetriamine or a mixture of diethylenetriamine and triethylenetetramine. In the invention, when the polyethylene polyamine is a mixture of several components, the invention has no special requirement on the mass ratio of the components in the mixture.
In the present invention, the molar ratio of the fatty acid, the polyethylene polyamine and the ethylene oxide is preferably 1: (1-1.1): (1-3), more preferably 1: (1-1.05): (1-2).
In the present invention, it is preferable to mix the fatty acid, the polyethylene polyamine and the ethylene oxide and then perform the condensation reaction. The invention does not require special mixing in any way, as is well known to those skilled in the art. In the invention, the condensation reaction temperature is preferably 100-180 ℃, and more preferably 120-150 ℃; the time of the condensation reaction is preferably 1-6, more preferably 2-3 h, and the time of the condensation reaction is the time for keeping the reaction system at the condensation reaction temperature; the condensation reaction is preferably carried out under stirring conditions, using speeds well known to those skilled in the art.
After the condensation reaction is completed, the invention obtains the alkyl amide polyamine ether. In the invention, the alkylamide polyamine ether is reddish brown liquid and is cooled to be paste.
The asphalt emulsifier provided by the invention comprises fatty amine, wherein the fatty amine preferably comprises hexadecylamine and/or octadecylamine; when the fatty amine is a mixture of two components, the invention has no special requirement on the mass ratio of the components in the mixture. The present invention does not specifically require the specific structure of the fatty amine, and is preferably well known to those skilled in the art.
The asphalt emulsifier provided by the invention also comprises alcohol amine, wherein the alcohol amine preferably comprises ethanolamine and/or diethanolamine, and more preferably diethanolamine.
The asphalt emulsifier provided by the invention preferably comprises 60-90 parts by mass of alkylamide polyamine ether, 8-12 parts by mass of fatty amine and 2-5 parts by mass of alcohol amine. In the invention, the alkyl amide polyamine ether is preferably 65-85 parts, and more preferably 70-80 parts. The fatty amine is preferably 9-11 parts, and more preferably 10 parts, based on the mass parts of the alkylamide polyamine ether; the alcohol amine is preferably 3 to 4 parts, and more preferably 3 parts.
In the invention, the alkylamide polyamine ether is used as a base material, the fatty amine is used as an auxiliary emulsifier, and the alcohol amine is used as an auxiliary agent, so that under the action of the fatty amine and the alcohol amine, the emulsifying effect of the alkylamide polyamine ether is improved, and meanwhile, the adhesion to stone is also improved.
The invention provides a preparation method of the asphalt emulsifier in the technical scheme, which comprises the following steps:
and mixing the alkyl amide polyamine ether with fatty amine and alcohol amine in sequence to obtain the asphalt emulsifier.
The invention mixes the alkyl amide polyamine ether with fatty amine and alcohol amine in turn to obtain the asphalt emulsifier. In the invention, the mixing temperature of the alkyl amide polyamine ether and the fatty amine is preferably not less than 90 ℃, and more preferably 90-95 ℃; the mixing time is preferably based on the full melting of the alkylamide polyamine ether and the fatty amine; the mixing temperature of the mixture of the alkylamide polyamine ether and the fatty amine and the alcohol amine is preferably less than or equal to 80 ℃, and the mixing time is preferably selected to ensure that all the components are uniformly mixed. In the present invention, the mixing is preferably carried out under stirring conditions in a speed and manner well known to those skilled in the art.
The invention also provides mineral latex asphalt, which comprises asphalt, an asphalt emulsifier, toughening resin, a thickening agent, filler and water; the asphalt emulsifier is the asphalt emulsifier in the technical scheme or the asphalt emulsifier prepared by the preparation method in the technical scheme.
The mineral latexed pitch of the present invention includes pitch. The asphalt type of the invention has no special requirements, including paraffin-based asphalt or naphthenic asphalt, and the asphalt type of the invention has no special requirements and can be a type well known to those skilled in the art.
The mineral latexes asphalt of the invention comprises asphalt emulsifier, which has the same composition with the asphalt emulsifier in the above technical scheme or the asphalt emulsifier prepared by the preparation method in the above technical scheme, and the composition is not repeated here.
The mineral latex asphalt comprises toughening resin, wherein the toughening resin preferably comprises one or more of butadiene styrene diene emulsion, acrylic emulsion and polyvinyl alcohol resin, and more preferably butadiene styrene diene emulsion or acrylic emulsion. In the invention, the solid content of the butadiene styrene diene emulsion is preferably 60-70%, and more preferably 63-67%; the solid content of the acrylic acid emulsification is preferably 45-55%, and more preferably 47-52%.
The mineral latexed asphalt of the present invention comprises a thickener, preferably comprising kaolin and/or bentonite; when the thickener is a mixture of two components, the invention has no special requirement on the mass ratio of the components in the mixture.
The mineral latexed asphalt of the present invention includes a filler, preferably including one or more of limestone, granite, and quartz, preferably limestone. The present invention does not require a particular particle size for the filler, and may be performed as is well known to those skilled in the art.
The mineral-latexed asphalt of the present invention also includes water selected from water for mineral-latexed asphalt well known to those skilled in the art. In the invention, the water preferably comprises hot water and cold water, the temperature of the hot water is preferably 85-95 ℃, and the temperature of the cold water is preferably room-temperature water. The invention preferably utilizes hot water to form the aqueous thickener solution and utilizes cold water to dilute the thickened slurry, as described in the preparation method section.
In the invention, the mineral latex asphalt preferably comprises 100 parts by mass of asphalt, 1.2-1.6 parts by mass of asphalt emulsifier, 1.0-3.0 parts by mass of toughening resin, 15-20 parts by mass of thickener, 100-120 parts by mass of filler and 200-230 parts by mass of water. In the invention, the emulsifier is preferably 1.3-1.5 parts by mass based on the mass parts of the asphalt; the toughening resin is preferably 1.5-2.5 parts; the preferable part of the thickener is 16-19 parts; the preferable amount of the filler is 105-115 parts; the water is preferably 205 to 225 parts.
In the invention, asphalt is used as a base material, and the asphalt emulsifier can be coated on the surface of asphalt particles under the action of the toughening resin to form a microcapsule structure with the asphalt emulsifier as a shell and the asphalt particles as capsule cores, thereby increasing the fine sand suspending capacity of the asphalt; and the thickening agent and the filler can further improve the asphalt strength and the sand suspending capacity.
The invention also provides a preparation method of the mineral latexes asphalt, which comprises the following steps:
mixing an asphalt emulsifier, a toughening resin and asphalt to obtain a mixture;
mixing the mixture with an aqueous dispersion of a thickener to obtain a thickened material;
diluting the thickening material, and then mixing the obtained diluted material with a filler to obtain the mineral latex asphalt.
The invention mixes the asphalt emulsifier, the toughening resin and the asphalt to obtain the mixture. In the present invention, the asphalt is preferably molten asphalt when mixed; the temperature of the asphalt is preferably 120-130 ℃, and more preferably 124-128 ℃. The invention has no special requirements on the adding time and the adding mode of each component, and the asphalt emulsifier and the toughening resin are preferably added into the molten asphalt. In the invention, the mixing is preferably carried out under the condition of shearing, and the shearing speed is preferably 2000-4000 r/min, more preferably 2500-3500 r/min; the shearing time is preferably 15-30 min, and more preferably 20-25 min.
After the mixture is obtained, the invention mixes the mixture with the water dispersion of the thickening agent to obtain the thickening material. In the present invention, the aqueous dispersion of the thickener preferably includes the thickener and water, and the mass ratio of the thickener to the water is preferably 1: 10-15, more preferably 1: 1-12; the water is preferably hot water, and the temperature of the hot water is preferably 85-95 ℃, more preferably 87-93 ℃, and further preferably 90-92 ℃. In the present invention, the water in the aqueous dispersion of the thickener is preferably part of the water in the asphalt mix.
In the present invention, the aqueous dispersion of the thickener is preferably obtained by mixing the thickener and water, followed by stirring; the stirring speed is preferably 1000-1500 r/min, more preferably 1100-1400 r/min, and still more preferably 1200-1300 r/min. The invention has no special requirement on the stirring time, and can uniformly disperse the thickening agent. In the invention, when the mixture is mixed with the aqueous dispersion of the thickening agent, the mixture is preferably added and mixed in batches, more preferably added in 2-4 times, and even more preferably added in 3 times; when adding, the addition amount of different batches of mixed materials is preferably equal. In the present invention, the mixture is preferably mixed with an aqueous dispersion of the thickener under stirring; the stirring speed is preferably 2500-3200 r/min, more preferably 2600-3100 r/min, and still more preferably 2700-3000 r/min; the stirring time is preferably 10-30 min, and more preferably 15-20 min.
After the thickening material is obtained, diluting the thickening material, and then mixing the obtained diluted material with a filler to obtain the mineral latex asphalt. In the present invention, the water for dilution is preferably cold water, and the temperature of the cold water is preferably room temperature. In the present invention, the water for dilution is preferably part of the water used for the mineral skim asphalt, and the sum of the mass of water in the aqueous dispersion of the thickener is equal to the mass of water in the mineral latex asphalt.
In the invention, the dilution is preferably carried out under the stirring condition, and the stirring speed is preferably 1500-2500 r/min, more preferably 1700-2400 r/min, and still more preferably 1800-2300 r/min; the stirring time is preferably 10-30 min, more preferably 15-25 min, and still more preferably 18-22 min.
After dilution, the invention mixes the diluted materials with fillers to obtain the mineral latex asphalt. The mixing mode is not specially required, and the filler is preferably added into the diluted material and then stirred; the stirring speed is preferably consistent with the stirring speed in the dilution process, and the stirring time is preferably 15-20 min, and more preferably 18-20 min.
The invention provides a mineral rubber emulsified asphalt mixture which comprises, by mass, 100-120 parts of mineral rubber emulsified asphalt, 35-55 parts of fine sand and 8-15 parts of water; the mineral latexed asphalt is the mineral latexed asphalt in the technical scheme or the mineral latexed asphalt prepared by the preparation method in the technical scheme.
The mineral rubber emulsified asphalt mixture comprises 100-120 parts by mass of mineral rubber emulsified asphalt, preferably 100-115 parts by mass of mineral rubber emulsified asphalt, and more preferably 105-110 parts by mass of mineral rubber emulsified asphalt. The mineral latexed asphalt is the mineral latexed asphalt described in the above technical scheme or the mineral latexed asphalt prepared by the preparation method described in the above technical scheme, and the description is not repeated.
Based on the mass parts of the mineral rubber emulsified asphalt, the mineral rubber emulsified asphalt mixture provided by the invention comprises 35-55 parts of fine sand, preferably 37-52 parts of fine sand, and more preferably 40-50 parts of fine sand. In the invention, the particle size of the fine sand is preferably 20-80 meshes, and more preferably 30-70 meshes.
Based on the mass parts of the mineral rubber emulsified asphalt, the mineral rubber emulsified asphalt mixture provided by the invention comprises 8-15 parts of water, preferably 9-14 parts of water, and more preferably 10-13 parts of water.
In the invention, the mineral latex asphalt has excellent sand suspending capacity, and when the mineral latex asphalt is mixed with the fine sand and water in the above dosage, the comprehensive performance of the mixture is excellent, and the construction requirement of the fine sand-containing fog seal is met.
The preparation method of the mineral rubber emulsified asphalt has no special requirements, and the mineral rubber emulsified asphalt, the fine sand and the water are preferably mixed and uniformly stirred.
In order to further illustrate the present invention, the asphalt emulsifier, the mineral latexed asphalt and the mineral latexed asphalt mixture provided by the present invention will be described in detail below with reference to the drawings and examples, which should not be construed as limiting the scope of the present invention.
Example 1
Mixing fatty acid (C15), ethylenediamine and ethylene oxide according to a molar ratio of 1:1:3, and then reacting at 120 ℃ for 6 hours to obtain alkylamide polyamine ether;
mixing alkyl amide polyamine ether with hexadecylamine at 90 ℃, stirring for 10min at the rotating speed of 100r/min, then cooling to 80 ℃, mixing with ethanolamine, and stirring for 10min at the rotating speed of 200r/min to obtain an asphalt emulsifier;
mixing asphalt and butadiene styrene diene emulsion, shearing at the rotating speed of 3000r/min for 20min, mixing the mixture obtained after shearing with kaolin water dispersion, and stirring at the rotating speed of 3000r/min for 20min to obtain a thickening material;
mixing the thickening material with the rest room temperature water, adding limestone into the mixture, and stirring at 2000r/min for 30min to obtain a mineral latex type emulsifier;
and mixing 100 parts by mass of the mineral latex type emulsifier with 35 parts of fine sand and 10 parts of water to obtain the mineral latex asphalt mixture.
Examples 2 to 4
Prepared according to the method of example 1, except that:
in the embodiment 2, the polyethylene polyamine is diethylenetriamine, the fatty amine is octadecylamine, the thickening agent is bentonite, and the toughening resin is acrylic emulsion;
in the embodiment 3, the polyethylene polyamine is triethylene tetramine, the alcohol amine is diethanol amine, the thickening agent is a mixture of bentonite and kaolin in a mass ratio of 1:1, and the toughening resin is polyvinyl alcohol resin;
in example 4, the polyenylpolyamine is tetraethylenepentamine, the thickener is kaolin, and the toughening resin is a mixture of butadiene styrene diene and acrylic acid in a mass ratio of 1: 1;
examples 1-4 the amount of each component of the mineral emulsified asphalt and the mineral emulsified asphalt mixture was varied and specifically listed in table 1.
Table 1 examples 1-4 amounts of asphalt emulsifier, mineral gum emulsified asphalt and mineral gum emulsified asphalt mixture
Characterization of Performance and results
The properties of the mineral skim emulsified asphalt obtained in examples 1 to 4 were characterized according to ASTM D2939, and the results are shown in Table 2.
Table 2 results of testing the properties of the mineral rubber-emulsified asphalt obtained in examples 1 to 4
The test results in table 2 show that the asphalt emulsifier provided by the invention can be used for carrying out emulsification modification on asphalt, and the performance of the mineral gum emulsified asphalt obtained after modification meets the ASTM D2939 standard.
The performance of the mineral rubber emulsified asphalt mixture obtained in the examples 1-4 is tested according to the following standards GB/T1768-2006, JG/T24-2018, GB/T1865-2009, GB/T9269 and GB/T1768-2006, and the test results are shown in Table 3. Wherein the traditional anionic emulsified asphalt mixture comprises anionic emulsified asphalt: fine sand 100: 20); the traditional cationic emulsified asphalt mixture consists of (cationic emulsified asphalt: fine sand 100: 15). Test samples of the compound were prepared according to the structure shown in fig. 1, and the test results are shown in table 3.
Table 3 results of performance test of the mineral gum emulsified asphalt mixtures obtained in examples 1 to 4
The test results in table 3 show that the mineral gum emulsified asphalt mixtures obtained in examples 1 to 4 are excellent in adhesiveness, wear resistance, adhesion and the like, and the comprehensive properties are obviously improved, wherein the viscosity is obviously superior to that of anionic emulsified asphalt and cationic emulsified asphalt, which indicates that the mineral gum emulsified asphalt mixture provided by the invention has better sand suspension retention time and uniformity. In addition, compared with the existing cationic emulsified asphalt mixture and anionic emulsified asphalt mixture, the mineral gum emulsified asphalt mixture provided by the invention has the advantages that the storage stability is obviously enhanced, and the application range of the mixture is further expanded.
The embodiments show that the asphalt emulsifier provided by the invention has excellent emulsifying performance, and after the asphalt is emulsified and modified, the compatibility of the asphalt with the thickening agent, the fine aggregate and the water body glue is improved, so that the mineral glue emulsified asphalt with excellent performance can be obtained by the obtained emulsified asphalt under the condition of not adjusting the pH value, and a foundation is provided for obtaining an asphalt mixture meeting the construction requirement of a sealing layer containing fine sand fog.
In addition, the invention also provides a preparation method of the asphalt emulsifier and the mineral gum emulsified asphalt, which is simple and easy to control and is suitable for industrial production.
Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.
Claims (8)
1. An asphalt emulsifier comprises 60-90 parts of alkylamide polyamine ether, 8-12 parts of fatty amine and 2-5 parts of alcohol amine; the fatty amine comprises hexadecylamine and/or octadecylamine; the alcohol amine comprises ethanolamine and/or diethanolamine;
the structural general formula of the alkyl amide polyamine ether is shown as formula 1:
in the formula 1, R is C13-C19 alkyl, n is 1-4, and m is 1-3.
2. The asphalt emulsifier of claim 1, wherein the alkyl amide polyamine ether is prepared by a process comprising: and carrying out condensation reaction on fatty acid, polyethylene polyamine and ethylene oxide to obtain the alkylamide polyamine ether.
3. The asphalt emulsifier according to claim 2, wherein the temperature of the condensation reaction is 100 to 180 ℃ and the time of the condensation reaction is 1 to 6 hours.
4. The asphalt emulsifier of claim 2, wherein the molar ratio of the fatty acid, the polyethylene polyamine, and the ethylene oxide is 1 (1-1.1) to (1-3).
5. The method for preparing the asphalt emulsifier of any one of claims 1 to 4, comprising the steps of:
and mixing the alkyl amide polyamine ether with fatty amine and alcohol amine in sequence to obtain the asphalt emulsifier.
6. The mineral latex asphalt comprises asphalt, an asphalt emulsifier, toughening resin, a thickener, a filler and water, wherein the asphalt emulsifier is the asphalt emulsifier disclosed by any one of claims 1-4 or prepared by the preparation method disclosed by claim 5.
7. The method of preparing mineral skim asphalt of claim 6, comprising the steps of:
mixing an asphalt emulsifier, a toughening resin and asphalt to obtain a mixture;
mixing the mixture with an aqueous dispersion of a thickener to obtain a thickened material;
diluting the thickening material, and then mixing the obtained diluted material with a filler to obtain the mineral latex asphalt.
8. A mineral rubber emulsified asphalt mixture comprises, by mass, 100-120 parts of mineral rubber emulsified asphalt, 35-55 parts of fine sand and 8-15 parts of water; the mineral emulsified asphalt is the mineral emulsified asphalt of claim 6 or the mineral emulsified asphalt prepared by the preparation method of claim 7.
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