CN114133757B - Surface-used tackifying high-strength emulsified asphalt and preparation method thereof - Google Patents
Surface-used tackifying high-strength emulsified asphalt and preparation method thereof Download PDFInfo
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- CN114133757B CN114133757B CN202111656565.1A CN202111656565A CN114133757B CN 114133757 B CN114133757 B CN 114133757B CN 202111656565 A CN202111656565 A CN 202111656565A CN 114133757 B CN114133757 B CN 114133757B
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- 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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention relates to the field of road maintenance materials, in particular to a tackifying high-strength emulsified asphalt for surface treatment and a preparation method thereof. The technical key points are as follows: comprises a component A and a component B, wherein the weight part ratio of the component A to the component B is 100 (2-10); wherein, the component A is modified emulsified asphalt containing an emulsifier I; the component B is a resin emulsion containing an emulsifier II; the emulsifier I is an amine emulsifier, and the emulsifier II is an amide amphoteric emulsifier. The tackifying high-strength emulsified asphalt for the surface and the preparation method thereof provided by the invention have the characteristics of strong cohesive force, good elastic recovery performance, excellent high-low temperature performance and the like, and have remarkable promotion effect on the cohesiveness, wear resistance, water damage resistance and cracking resistance of the surface system mixture.
Description
Technical Field
The invention relates to the field of road maintenance materials, in particular to a tackifying high-strength emulsified asphalt for surface treatment and a preparation method thereof.
Background
The surface system is a road maintenance method for completing construction of high-quality fine aggregate and polymer modified emulsified asphalt at one time by using special construction equipment, and can inhibit disintegration cracking of the road surface, close pores of the road surface, prevent the road from being infiltrated by rainwater and improve the durability and skid resistance of the road surface.
The commonly used polymer modified emulsified asphalt is SBR emulsified asphalt and SBS modified emulsified asphalt. The SBR emulsified asphalt is obtained by mixing latex and soap liquid and then emulsifying road petroleum asphalt, or is obtained by directly mixing the latex and soap liquid with road petroleum asphalt emulsified finished products. The SBR emulsified asphalt has low requirements on production equipment and relatively simple production process. The SBS modified emulsified asphalt is obtained by modifying road petroleum asphalt by using an SBS modifier, and then emulsifying the road petroleum asphalt, wherein the SBS modifier has higher requirements on production equipment and lower addition amount of the SBS modifier.
The existing SBR emulsified asphalt has low softening point and poor high-temperature performance and ageing resistance; the SBS modified emulsified asphalt reduces the addition amount of the SBS modifier in the SBS emulsified asphalt, so that the SBS modified emulsified asphalt has insufficient cohesive force and unsatisfactory high-low temperature performance. Therefore, when the SBR emulsified asphalt and the SBS modified emulsified asphalt are used as cementing materials at the surface, diseases such as fine aggregate falling and cracking can occur after cold and hot alternation of summer heat and winter cold. This has limited the development of wear layers at the road surface, which is a short plate in high quality surface treatments.
In view of the defects existing in the existing polymer emulsified asphalt, the inventor researches and innovates based on years of rich experience and professional knowledge of the materials and by matching with theoretical analysis, and develops the surface-used tackifying high-strength emulsified asphalt and the preparation method thereof, and the surface-used tackifying high-strength emulsified asphalt has the characteristics of strong cohesive force, good elastic recovery performance, excellent high-low temperature performance and the like, and has remarkable promotion effect on the cohesiveness, wear resistance, water damage resistance and cracking resistance of surface-used system mixtures.
Disclosure of Invention
The first purpose of the invention is to provide the tackifying high-strength emulsified asphalt, which is solidified by cementing with each other through the successive demulsification of A, B components, so that the cohesive force of the polymer emulsified asphalt is improved, the high-low temperature performance of the surface material is improved, and the occurrence of diseases such as falling off, cracking and the like of fine aggregates of a wearing layer is avoided.
The technical aim of the invention is realized by the following technical scheme:
the invention provides tackifying high-strength emulsified asphalt which comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 100 (2-10);
wherein, the component A is modified emulsified asphalt containing an emulsifier I; the component B is a resin emulsion containing an emulsifier II;
the emulsifier I is an amine emulsifier, and the emulsifier II is an amide amphoteric emulsifier.
In the invention, the component A is initiated by the component B, and the components are sequentially demulsified, cemented and solidified with each other, so that the adhesive has the characteristic of strong cohesive force.
Further, emulsifier I is a mixture of N- [ 2-hydroxy-3-octadecylamino ] -propyltrimethylammonium chloride and N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyltrimethylammonium chloride;
the weight part ratio of the N- [ 2-hydroxy-3-octadecylamino ] -propyl trimethyl ammonium chloride and the N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyl trimethyl ammonium chloride is (5-7): 1, preferably 6:1.
Further, emulsifier II is a mixture of octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride and octadecyl-bis (N-methylol propionamide) -sodium acetate ammonium chloride;
the weight part ratio of the octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride to the octadecyl-bis (N-hydroxymethyl propionamide) -sodium acetate ammonium chloride is (3-4): 1, preferably 4:1.
In the present invention, the difference between the hydrophilic-lipophilic balance (HLB) of emulsifier I and emulsifier II makes emulsifier I have a stronger affinity for modified asphalt and emulsifier II has a stronger affinity for resin.
Although both emulsifier I and emulsifier II are slow-breaking quick-setting emulsifiers, the formula of emulsifier I is [ C 18 H 37 NHCH 2 CH(OH)CH 2 ]-N+(CH 3 ) 3 Cl-and [ C 12 H 25 O(CH 2 CH 2 O) 9 CH 2 CH(OH)CH 2 ]-N + (CH 3 ) 3 Cl-, and emulsifier II is C 18 H 37 -N + [CH 2 CH(OH)CH 2 SO 3 Na](CH 2 CH 2 CONH 2 ) 2 Cl-and C 18 H 37 -N + [CH 2 COONa](CH 2 CH 2 CONHCH 2 OH) 2 Cl-emulsifier I is long linear compared with emulsifier II,the hydrophobic group chain segment is longer, the hydrophilic group is smaller, the molecular arrangement of the emulsifier is compact, the interface film of the latex particles is firm, the stability of the component A is good, and the demulsification speed is slower; the emulsifier II has larger hydrophilic groups and better hydrophilicity, so that the particles of the component B are easier to move in an aqueous medium, are easier to electrochemically deposit when contacting the surface of mineral aggregate, and the particles of the component B are more likely to be electrochemically deposited on the surface of mineral aggregate, and the particles of the component B are more likely to be-CH 2 CH(OH)CH 2 SO 3 Na or-CH 2 The COONa anion group attracts to induce the hydrophilic extreme movement of the emulsifier I, reduces the strength of the A-component latex particle film and initiates demulsification.
Therefore, the emulsion breaking and condensing time of the component A containing the emulsifier I is longer than that of the component B containing the emulsifier II, so that the component B can finish coating on the surface of mineral aggregate at first in the coating, initial setting, curing and forming processes of the emulsified asphalt, emulsion breaking is started at first, and then the component A is started to be subjected to emulsion breaking, so that the component A and the component B are crosslinked and cured, and the cohesive force of the polymer emulsified asphalt is obviously improved.
Further, the component A comprises the following components in percentage by mass: 45-63% of road petroleum asphalt, 2-5.6% of SBS elastomer, 3-6% of rubber oil, 0.05-0.35% of sulfur, 0.5-2.5% of emulsifier I, 0.1-0.4% of hydrochloric acid and 22.15-49.35% of water.
In the process of breaking the interfacial film of the component B and coating and solidifying the mineral aggregate, the component B breaks the charge balance of the emulsion, so that the osmotic pressure of the colloidal particles of the component A is reduced, then the component A is initiated, and is demulsified and coated on the surface of the resin mineral aggregate in sequence with the component B, so that the coating film thickness on the surface of the mineral aggregate is further increased, the effect of rolling and embedding is achieved, the modified asphalt material in the component A and the resin material in the component B are adhered and solidified under the driving of the rolling and embedding effect, and are filled between the mineral aggregates, and the adhesive property of the polymer emulsified asphalt is greatly improved.
Further, the component B comprises the following components in percentage by mass: 24-36% of reactive resin, 16-24% of rosin resin, 1-5% of emulsifier II, 0.1-0.5% of hydrochloric acid and 34.5-58.9% of water.
The component B is quickly diffused and deposited on the surface of the mineral aggregate through the electrochemical deposition of anions and cations, and compared with the component A, the coating property is stronger; the resin material in the component B has a higher proportion of polar reactive groups, and can generate the physical entanglement and the intermolecular acting force adsorption action of the polymer chain segments with the modified asphalt of the component A; epoxy groups, phenolic hydroxyl groups and the like in the resin material react with active groups C=C, hydroxyl groups and carboxylic acid in SBS and asphalt through addition and condensation to form a grafted and crosslinked network structure to form stable chemical bonds, so that the polymer emulsified asphalt containing A, B components has excellent cementing property.
Further, the road petroleum asphalt in the component A is No. 90 or No. 70A road petroleum asphalt.
Further, the SBS elastomer is a linear structure, the weight average molecular weight is 15-20 ten thousand, wherein the weight part ratio of S (styrene block)/B (butadiene block) is 2: 8-4: 6, preferably 3:7.
Further, the aromatic hydrocarbon content in the rubber oil is 30-40%, and preferably the aromatic base rubber oil.
Further, the reactive resin is any one or a mixture of a plurality of ethylene-n-butyl acrylate-glycidyl methacrylate triblock copolymer, alkylphenol-formaldehyde resin or hexamethoxy-melamine resin.
Further, the reactive resin is an ethylene-n-butyl acrylate-glycidyl methacrylate triblock copolymer including those available from DuPontAnd/or alkylphenol-formaldehyde resins.
Further, the rosin resin is a low molecular polymer obtained by esterifying and modifying natural rosin with glycerol or pentaerythritol, the number average molecular weight is 4000-6000, and the softening point is 70-100 ℃. Which increases the solubility of the reactive resin in the solvent and has the effect of improving the plasticity and increasing the toughness.
The second object of the invention is to provide a preparation method of the tackifying high-strength emulsified asphalt for surface treatment, which has the same technical effects.
The technical aim of the invention is realized by the following technical scheme:
a preparation method of tackifying high-strength emulsified asphalt for surface treatment specifically comprises the following steps: the component A and the component B are prepared separately and stored separately; before construction, checking A, B component temperature to keep it between 10-60deg.C, slowly adding component B into component A to reduce emulsion concentration change, and stirring
Further, the preparation method of the component A specifically comprises the following operation steps:
s1, heating road petroleum asphalt, sequentially adding rubber oil and SBS elastomer, adding sulfur after the SBS elastomer is uniformly dispersed, and continuously stirring and developing to obtain modified asphalt for emulsification;
s2, adding the emulsifier I into water, and adjusting the pH value to prepare soap solution;
s3, adding the modified asphalt for emulsification and the soap solution into a colloid mill to obtain a component A.
In step S1, the heating temperature of the road petroleum asphalt is 150-160 ℃.
Further, in the step S1, after the rubber oil and the SBS elastomer are added, the temperature is controlled at 170-180 ℃ and a high-speed shearing machine is adopted for shearing, so that the SBS elastomer is finely dispersed, then the sulfur is added, and the mixture is stirred and developed for 3 hours at the temperature of 170-175 ℃ to obtain the modified asphalt for emulsification.
Further, in step S2, hydrochloric acid is added to adjust the pH to 1.5 to 2.5, and the temperature is controlled to 45 to 65 ℃.
In step S3, the mass ratio of the modified asphalt for emulsification to the soap solution is (25 to 34): (16-25).
Further, the preparation method of the component B specifically comprises the following operation steps:
a1, adding rosin resin into petroleum ether solvent, and stirring at room temperature to disperse and dissolve the rosin resin;
a2, adding the reactive resin into the rosin resin petroleum ether solution, and shearing and dispersing to obtain a mixed resin solution;
a3, preparing the emulsifier II into emulsifier II soap solution;
a4, mixing and emulsifying the mixed resin solution and the emulsifier II soap solution to obtain an emulsified resin solution;
and A5, evaporating and recovering petroleum ether solvent in the emulsified resin solution, wherein the rest resin solution is the component B.
In step A2, the temperature at the time of shearing and dispersing is 20-40 ℃.
In summary, the invention has the following beneficial effects:
the invention utilizes the action of anion and cation electrochemical deposition in the component B to lead the component B to be deposited on the surface of the mineral aggregate before the component A, breaks the charge balance of emulsion in the process of breaking the interfacial film of the component B and wrapping and solidifying the mineral aggregate, reduces the osmotic pressure of the colloidal particles of the component A, demulsifies the component A, wraps the surface of the resin mineral aggregate, forms rolling and embedding, promotes the adhesion and solidification of the resin material of the component B and the modified asphalt material of the component A, improves the adhesive property of the polymer emulsified asphalt, and greatly improves the high-low temperature property of the polymer emulsified asphalt.
Detailed Description
In order to further illustrate the technical means and effects adopted by the invention to achieve the preset aim, the specific implementation mode, the characteristics and the effects of the tackifying high-strength emulsified asphalt and the preparation method thereof are described in detail below.
The sources of the raw materials used in the examples:
road asphalt: jiangsu Hengtai asphalt Co., ltd;
SBS elastomer: ningbo Jinhai Chenpharmaco Co., ltd;
MS-3 grading basalt: jiangsu Mao Di group Co., ltd;
petroleum ether solvent: jinan Chengyi chemical industry Co., ltd;
rosin resin: zhejiang Xin pine resin Co., ltd;
n- [ 2-hydroxy-3-octadecylamino ] -propyltrimethylammonium chloride: lifan chemical Co., ltd;
n- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyltrimethylammonium chloride: lifan chemical Co., ltd;
octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride: kang Disi chemical industry (Hubei) limited;
octadecyl-bis (N-methylol propionamide) -sodium acetate ammonium chloride: kang Disi chemical industry (Hubei) limited;
rubber oil: next to Shanghai Uygur company;
ethylene-n-butyl acrylate-glycidyl methacrylate triblock copolymer: dupont, usa;
alkylphenol-formaldehyde resin: jinan Sanding Polymer New Material Co., ltd;
hexamethoxy-melamine resin: new allnex company of america;
portland cement: anhui conch group Limited liability company;
SBR latex: shandong chemical industry Co., ltd;
JY-R7M type slow-breaking quick-setting emulsifier: jiangsu Jinyang new material science and technology Co., ltd.
Example 1: tackifying high-strength emulsified asphalt and preparation method thereof
The tackifying high-strength emulsified asphalt provided in the embodiment comprises, by weight, 95 parts of a component and 5 parts of a component B.
The preparation method of the component A comprises the following steps of:
s1, heating 617 parts of Sk90# asphalt to 160 ℃, sequentially adding 6.5 parts of rubber oil and 26 parts of SBS elastomer, controlling the temperature to 180 ℃, shearing by using a high-speed shearing machine, adding 0.5 part of sulfur after the SBS elastomer is finely and uniformly dispersed, and stirring and developing for 3 hours at the temperature of 175 ℃ to obtain 650 parts of modified asphalt for emulsification;
s2, adding 2.5 parts of an emulsifier I into water, adding hydrochloric acid, adjusting the pH to 2.0, and adjusting the temperature to 65 ℃ to prepare 350 parts of soap solution;
s3, enabling the 175 ℃ modified asphalt and 65 ℃ soap solution to flow through a colloid mill according to the weight portion ratio of 65/35, and obtaining the component A.
Wherein the emulsifier I is a mixture of N- [ 2-hydroxy-3-octadecylamino ] -propyltrimethylammonium chloride and N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyltrimethylammonium chloride; and the weight ratio of the N- [ 2-hydroxy-3-octadecylamino ] -propyl trimethyl ammonium chloride to the N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyl trimethyl ammonium chloride is 6:1.
The preparation method of the component B comprises the following steps of:
a1, adding 24 parts of rosin resin into 200 parts of petroleum ether solvent with the boiling range of 60-90 ℃ and stirring to disperse and dissolve the rosin resin;
a2, adding 36 parts of ethylene-n-butyl acrylate-glycidyl methacrylate triblock copolymer resin into a rosin resin petroleum ether solvent, and shearing and dispersing at the temperature of 35+/-3 ℃ to obtain a mixed resin solution;
a3, adding the petroleum ether resin solution and 40 parts of emulsifier II soap solution (containing 3 parts of emulsifier II) into a colloid mill for emulsification to obtain an emulsified resin solution;
and A4, recovering the petroleum ether solvent in the emulsified resin solution by a rotary evaporator to obtain a component B with the solid content of 60%.
Wherein emulsifier II is a mixture of octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride and octadecyl-bis (N-methylol propionamide) -sodium acetate ammonium chloride; and the weight part ratio of the octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride to the octadecyl-bis (N-hydroxymethyl propionamide) -sodium acetate ammonium chloride is 4:1.
The embodiment also provides a tackifying high-strength emulsified asphalt slurry mixture prepared from the tackifying high-strength emulsified asphalt, which is prepared from the following components in parts by weight:
(1) Slowly adding 5 parts of the component B into 95 parts of the component A, and mixing and stirring to obtain the tackifying high-elasticity emulsified asphalt;
(2) Uniformly mixing 200 parts of MS-3 type grading basalt with 1 part of silicate cement, and then adding 6 parts of water for pre-mixing;
(3) And (3) adding 16 parts of the tackifying high-strength emulsified asphalt obtained in the step (1) into the mixture obtained in the step (2) according to the oil-stone ratio, and uniformly mixing.
Table 1 screening test results of MS-3 type grading basalt
| Screen mesh size (mm) | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Yield (%) | 100 | 83.6 | 54.3 | 35.4 | 20.7 | 14.9 | 9.2 | 5.4 |
Example 2: tackifying high-strength emulsified asphalt and preparation method thereof
The tackifying high-strength emulsified asphalt provided in the embodiment comprises, by weight, 95 parts of a component and 5 parts of a component B.
The preparation of component A was carried out in the same manner as in example 1.
The preparation method of the component B comprises the following steps of:
a1, adding 24 parts of rosin resin into 200 parts of petroleum ether solvent with the boiling range of 60-90 ℃ and stirring to disperse and dissolve the rosin resin;
a2, adding 40 parts of alkylphenol-formaldehyde resin into a rosin resin petroleum ether solvent, and shearing and dispersing at the temperature of 35+/-3 ℃ to obtain a mixed resin solution;
a3, adding the petroleum ether resin solution and 40 parts of emulsifier II soap solution (containing 4 parts of emulsifier II) into a colloid mill for emulsification to obtain an emulsified resin solution;
and A4, recovering the petroleum ether solvent in the emulsified resin solution by a rotary evaporator to obtain a component B with the solid content of 60%.
Wherein emulsifier II is a mixture of octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride and octadecyl-bis (N-methylol propionamide) -sodium acetate ammonium chloride; and the weight part ratio of the octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride to the octadecyl-bis (N-hydroxymethyl propionamide) -sodium acetate ammonium chloride is 4:1.
The embodiment also provides a viscosity-increasing high-strength emulsified asphalt slurry mixture prepared by adopting the viscosity-increasing high-strength emulsified asphalt, and the preparation method is the same as that of the embodiment 1.
Example 3: tackifying high-strength emulsified asphalt and preparation method thereof
The tackifying high-strength emulsified asphalt provided in the embodiment comprises, by weight, 95 parts of a component and 5 parts of a component B.
The preparation method of the component A comprises the following steps of:
s1, heating 597.5 parts of Zhenhai 70# asphalt to 160 ℃, sequentially adding 26 parts of rubber oil and 26 parts of SBS elastomer, controlling the temperature to 180 ℃, shearing by using a high-speed shearing machine, adding 0.5 part of sulfur after the SBS elastomer is finely and uniformly dispersed, and stirring and developing for 3 hours at the temperature of 175 ℃ to obtain 650 parts of modified asphalt for emulsification;
s2, adding 3 parts of an emulsifier I into water, adding hydrochloric acid, adjusting the pH to 2.0, and adjusting the temperature to 65 ℃ to prepare 350 parts of soap solution;
s3, enabling the 175 ℃ modified asphalt and 65 ℃ soap solution to flow through a colloid mill according to the weight portion ratio of 65/35, and obtaining the component A.
Wherein the emulsifier I is a mixture of N- [ 2-hydroxy-3-octadecylamino ] -propyltrimethylammonium chloride and N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyltrimethylammonium chloride; and the weight ratio of the N- [ 2-hydroxy-3-octadecylamino ] -propyl trimethyl ammonium chloride to the N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyl trimethyl ammonium chloride is 6:1.
The preparation method of the component B comprises the following steps of:
a1, adding 18 parts of rosin resin into 200 parts of petroleum ether solvent with the boiling range of 60-90 ℃ and stirring to disperse and dissolve the rosin resin;
a2, adding 42 parts of ethylene-n-butyl acrylate-glycidyl methacrylate triblock copolymer resin into a rosin resin petroleum ether solvent, and shearing and dispersing at the temperature of 35+/-3 ℃ to obtain a mixed resin solution;
a3, adding the petroleum ether resin solution and 40 parts of emulsifier II soap solution (containing 4 parts of emulsifier II) into a colloid mill for emulsification to obtain an emulsified resin solution;
and A4, recovering the petroleum ether solvent in the emulsified resin solution by a rotary evaporator to obtain a component B with the solid content of 60%.
Wherein emulsifier II is a mixture of octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride and octadecyl-bis (N-methylol propionamide) -sodium acetate ammonium chloride; and the weight part ratio of the octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride to the octadecyl-bis (N-hydroxymethyl propionamide) -sodium acetate ammonium chloride is 4:1.
The embodiment also provides a viscosity-increasing high-strength emulsified asphalt slurry mixture prepared by adopting the viscosity-increasing high-strength emulsified asphalt, and the preparation method is the same as that of the embodiment 1.
Example 4: tackifying high-strength emulsified asphalt and preparation method thereof
The tackifying high-strength emulsified asphalt provided in the embodiment comprises, by weight, 95 parts of a component and 5 parts of a component B.
Wherein, the preparation method of the A component is the same as in example 3.
The preparation method of the component B comprises the following steps of:
a1, adding 15 parts of rosin resin into 200 parts of petroleum ether solvent with the boiling range of 60-90 ℃ and stirring to disperse and dissolve the rosin resin;
a2, adding 45 parts of alkylphenol-formaldehyde resin into a rosin resin petroleum ether solvent, and shearing and dispersing at the temperature of 35+/-3 ℃ to obtain a mixed resin solution;
a3, adding the petroleum ether resin solution and 40 parts of emulsifier II soap solution (containing 5 parts of emulsifier II) into a colloid mill for emulsification to obtain an emulsified resin solution;
and A4, recovering the petroleum ether solvent in the resin emulsion solution through a rotary evaporator to obtain a component B with the solid content of 60%.
Wherein emulsifier II is a mixture of octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride and octadecyl-bis (N-methylol propionamide) -sodium acetate ammonium chloride; and the weight part ratio of the octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride to the octadecyl-bis (N-hydroxymethyl propionamide) -sodium acetate ammonium chloride is 4:1.
The embodiment also provides a viscosity-increasing high-strength emulsified asphalt slurry mixture prepared by adopting the viscosity-increasing high-strength emulsified asphalt, and the preparation method is the same as that of the embodiment 1.
Comparative example 1
The emulsified asphalt provided in this example comprises, by weight, 95 parts of a component and 5 parts of B component.
The preparation of component A was carried out in the same manner as in example 1.
The preparation method of the component B comprises the following steps of:
a1, adding 24 parts of rosin resin into 200 parts of petroleum ether solvent with the boiling range of 60-90 ℃ and stirring to disperse and dissolve the rosin resin;
a2, adding 36 parts of ethylene-n-butyl acrylate-glycidyl methacrylate triblock copolymer resin into a rosin resin petroleum ether solvent, and shearing and dispersing at the temperature of 35+/-3 ℃ to obtain a mixed resin solution;
a3, adding the petroleum ether resin solution and 40 parts of emulsifier I soap solution (containing 5 parts of emulsifier I) into a colloid mill for emulsification to obtain an emulsified resin solution;
and A4, recovering the petroleum ether solvent in the resin emulsion solution through a rotary evaporator to obtain a component B with the solid content of 60%.
Wherein the emulsifier I is a mixture of N- [ 2-hydroxy-3-octadecylamino ] -propyltrimethylammonium chloride and N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyltrimethylammonium chloride; and the weight ratio of the N- [ 2-hydroxy-3-octadecylamino ] -propyl trimethyl ammonium chloride to the N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyl trimethyl ammonium chloride is 6:1.
The embodiment also provides a viscosity-increasing high-strength emulsified asphalt slurry mixture prepared by adopting the viscosity-increasing high-strength emulsified asphalt, and the preparation method is the same as that of the embodiment 1.
Comparative example 2
The emulsified asphalt provided in this example comprises, by weight, 95 parts of a component and 5 parts of B component.
The preparation method of the component A comprises the following steps of:
s1, heating 617 parts of Sk90# asphalt to 160 ℃, sequentially adding 6.5 parts of rubber oil and 26 parts of SBS elastomer, controlling the temperature to 180 ℃, shearing by using a high-speed shearing machine, adding 0.5 part of sulfur after the SBS elastomer is finely and uniformly dispersed, and stirring and developing for 3 hours at the temperature of 175 ℃ to obtain 650 parts of modified asphalt for emulsification;
s2, adding 4 parts of emulsifier II into water, adding hydrochloric acid, adjusting the pH to 2.0, and adjusting the temperature to 65 ℃ to prepare 350 parts of soap solution;
s3, enabling the 175 ℃ modified asphalt and 65 ℃ soap solution to flow through a colloid mill according to the weight portion ratio of 65/35, and obtaining the component A.
Wherein emulsifier II is a mixture of octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride and octadecyl-bis (N-methylol propionamide) -sodium acetate ammonium chloride; and the weight part ratio of the octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride to the octadecyl-bis (N-hydroxymethyl propionamide) -sodium acetate ammonium chloride is 4:1.
The preparation of component B was carried out in the same manner as in example 1.
In this example, an emulsified asphalt slurry mixture prepared by using the above emulsified asphalt is also provided, and the preparation method is the same as that in example 1.
Comparative example 3
The SBR modified emulsified asphalt comprises the following components in parts by weight: 4 parts of JY-R7M slow-breaking quick-setting emulsifier, 10 parts of SBR latex and 60 parts of Zhenhai 70# asphalt.
The preparation method comprises the following steps:
s1, adding 4 parts of slow-cracking quick-setting cationic emulsifier and 10 parts of SBR latex into water, adding hydrochloric acid, adjusting the pH to 2.0, and adjusting the temperature to 60 ℃ to prepare soap solution;
s2, adding 145 ℃ Zhenhai 70# asphalt and 60 ℃ soap solution into a colloid mill according to the weight part ratio of 65/35, and carrying out high-speed shearing grinding to obtain the SBR modified emulsified asphalt.
The preparation method of the SBR emulsified asphalt slurry mixture is the same as that of example 1.
Performance testing
The viscosity-increasing high-strength emulsified asphalt evaporation residue prepared according to the test of highway engineering asphalt and asphalt mixture test procedure (JTG E20-2011) issued by the transportation department is tested for softening point, penetration and 5 ℃ ductility, 30min and 60min cohesive force tests of the slurry mixture are tested, the soaking is carried out for 1h, and the soaking is carried out for 6d, and the data are shown in Table 2.
The 15℃pullout strength test was carried out according to the paint and varnish pullout test (GB/T5210-2006), the substrate used being a flat cement admixture slab, and the test data being shown in Table 2.
TABLE 2 detection results of emulsified asphalt of examples 1 to 4 and comparative examples 1 to 3
As can be seen from Table 2, the tackifying high-strength emulsified asphalt obtained by adding the reactive resin emulsion, preparing the component A by adopting the emulsifier I and the emulsifier II and compounding the component B has higher drawing strength at 15 ℃ than the modified emulsified asphalt prepared without adding the reactive resin and using the single emulsifier I or the emulsifier II; the slurry mixture test also shows that the slurry mixture cohesive force and wet wheel abrasion loss prepared by using the tackifying high-strength emulsified asphalt in the embodiment are better than those of the modified emulsified asphalt in the comparative example, and the evaporation residue test result shows that the tackifying high-strength emulsified asphalt has higher softening point and good low-temperature ductility.
The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.
Claims (5)
1. The tackifying high-strength emulsified asphalt for the surface is characterized by comprising a component A and a component B, wherein the weight ratio of the component A to the component B is 100 (2-10);
the component A comprises the following components in percentage by weight: 45-63% of road petroleum asphalt, 2-5.6% of SBS elastomer, 3-6% of rubber oil, 0.05-0.35% of sulfur, 0.5-2.5% of emulsifier I, 0.1-0.4% of hydrochloric acid and 22.15-49.35% of water;
the component B comprises the following components: 24-36% of reactive resin, 16-24% of rosin resin, 1-5% of emulsifier II, 0.1-0.5% of hydrochloric acid and 34.5-58.9% of water;
the reactive resin is any one or a mixture of more than one of ethylene-n-butyl acrylate-glycidyl methacrylate triblock copolymer, alkylphenol-formaldehyde resin or hexamethoxy-melamine resin;
wherein the emulsifier I is prepared from the following components in parts by weight: 1, and N- [ 2-hydroxy-3-octadecylamino ] -propyltrimethylammonium chloride and N- [ 2-hydroxy-3-dodecyloxy polyoxyethylene ether (9) ] -propyltrimethylammonium chloride;
the emulsifier II is prepared from the following components in parts by weight: 1 (r) a mixture of octadecyl-bis (1-propionamide) - (3-sodium sulfonate-2-hydroxypropyl) ammonium chloride and octadecyl-bis (N-methylolpropionamide) -sodium acetate ammonium chloride.
2. The surface-used tackifying high-strength emulsified asphalt according to claim 1, wherein the rosin resin is a low molecular polymer obtained by esterifying and modifying natural rosin with glycerol or pentaerythritol, the softening point is 70-100 ℃, and the number average molecular weight is 4000-6000.
3. A method for producing a tackified high-strength emulsified asphalt for a surface as set forth in any one of claims 1 or 2, wherein the a component and the B component are produced separately and stored separately; and slowly adding the component B into the component A before construction operation, and uniformly stirring.
4. The method for preparing the tackifying high-strength emulsified asphalt for surface treatment according to claim 3, wherein the preparation method of the component A comprises the following steps:
s1, heating road petroleum asphalt, sequentially adding rubber oil and SBS elastomer, adding sulfur after the SBS elastomer is uniformly dispersed, and continuously stirring and developing to obtain modified asphalt for emulsification;
s2, adding the emulsifier I into water, and adopting hydrochloric acid to adjust the pH value to prepare soap solution;
s3, adding the modified asphalt for emulsification and the soap solution into a colloid mill to obtain the component A.
5. The method for preparing the tackifying high-strength emulsified asphalt for surface treatment according to claim 3, wherein the preparation method of the component B comprises the following operation steps:
a1, adding rosin resin into petroleum ether solvent, and stirring at room temperature to disperse and dissolve the rosin resin;
a2, adding the reactive resin into the rosin resin petroleum ether solution, and shearing and dispersing to obtain a mixed resin solution;
a3, preparing the emulsifier II into emulsifier II soap solution;
a4, mixing and emulsifying the mixed resin solution and the emulsifier II soap solution to obtain an emulsified resin solution;
and A5, evaporating and recovering petroleum ether solvent in the emulsified resin solution, wherein the rest resin solution is the component B.
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