CN111349347A - Modified emulsified asphalt and preparation method thereof - Google Patents
Modified emulsified asphalt and preparation method thereof Download PDFInfo
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- CN111349347A CN111349347A CN202010407711.6A CN202010407711A CN111349347A CN 111349347 A CN111349347 A CN 111349347A CN 202010407711 A CN202010407711 A CN 202010407711A CN 111349347 A CN111349347 A CN 111349347A
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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
- C08L95/005—Aqueous compositions, e.g. emulsions
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
- C07C213/08—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions not involving the formation of amino groups, hydroxy groups or etherified or esterified hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/24—Preparation of carboxylic acid esters by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran
- C07C67/26—Preparation of carboxylic acid esters by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran with an oxirane ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention belongs to the field of road building materials, and particularly relates to modified emulsified asphalt and a preparation method thereof. The modified emulsified asphalt comprises, by weight, 10-20 parts of propylene oxide, 15-30 parts of propionic acid, 5-10 parts of aniline, 5-10 parts of tetradecyl dimethyl tertiary amine, 2-4 parts of SBS modifier, 3-8 parts of sulfur stabilizer, 2-5 parts of cross-linking agent, 3-6 parts of dilute hydrochloric acid and 5-10 parts of anhydrous calcium chloride. The modified emulsified asphalt prepared by the invention can effectively resist ultraviolet light, heat and water damage, and has the best anti-rutting performance.
Description
Technical Field
The invention belongs to the field of road building materials, and particularly relates to modified emulsified asphalt and a preparation method thereof.
Background
Asphalt materials are widely applied to high-grade highways, but asphalt has high temperature sensitivity, is easy to become brittle at low temperature, is easy to flow at high temperature, and has poor viscoelastic property and aging resistance. The rapid increase in traffic and load capacity in recent years has resulted in a range of disease patterns in asphalt pavements, such as ruts, pits, and low temperature cracking. The polymer modified emulsified asphalt is the most effective method for improving the high and low temperature performance of asphalt, reducing the temperature sensitivity and improving the anti-rutting performance, so the invention of the modified emulsified asphalt is necessary.
Disclosure of Invention
In view of the above-mentioned characteristics of the prior art, the present invention aims to provide a modified emulsified asphalt and a preparation method thereof.
In order to achieve the above objects and other related objects, the present invention adopts the following technical solutions:
the invention provides a modified emulsified asphalt, which comprises, by weight, 10-20 parts of propylene oxide, 15-30 parts of propionic acid, 5-10 parts of aniline, 5-10 parts of tetradecyl dimethyl tertiary amine, 20-40 parts of base asphalt, 2-4 parts of SBS modifier, 3-8 parts of sulfur stabilizer, 2-5 parts of cross-linking agent, 3-6 parts of dilute hydrochloric acid and 5-10 parts of anhydrous calcium chloride.
In a second aspect of the present invention, there is provided a method for preparing the modified emulsified asphalt, comprising the steps of:
placing propylene oxide, propionic acid and water in a 250mL single-neck round-bottom flask; weighing aniline in a constant pressure funnel, dropwise adding for 30min, and stirring at 25 ℃ for reacting for 18 h; after the reaction is finished, removing the upper water layer, and washing the organic layer with water for 3 times; recrystallizing with ethyl acetate/petroleum ether, filtering, and vacuum drying to obtain white powder, i.e. intermediate I; weighing tetradecyl dimethyl tertiary amine, placing in 250mL, weighing intermediate I, dissolving in anhydrous ethanol, transferring to a constant pressure funnel, dripping for 30min, and stirring at 80 deg.C for reflux reaction for 8 h; after the reaction is finished, removing the solvent, and recrystallizing for 3 times by using acetone/ethyl acetate to obtain an emulsifier;
step two, heating the base asphalt to 180 ℃, adding the base asphalt into a high-shear dispersion emulsifying machine, then adding an SBS modifier, shearing the mixture at the speed of 3000r/min at 170 ℃ for 30min, stirring the mixture for 2h, keeping the temperature of 175-;
step three, adding distilled water heated to 70 ℃ into a beaker, uniformly stirring the prepared emulsifier, pouring the emulsifier into the beaker, and uniformly stirring the water and the emulsifier by using a glass rod; adding dilute hydrochloric acid to adjust the pH value, and comparing an acidic pH test paper with a standard and standard colorimetric card until the pH value is adjusted to 2-3; adding anhydrous calcium chloride, stirring to obtain soap liquid, and keeping the temperature of the soap liquid at about 70 ℃ all the time in the process;
pouring the weighed SBS modified asphalt with the temperature of 150-160 ℃ into a beaker filled with soap solution slowly, and stirring by using a glass rod continuously to prepare emulsified asphalt; and (3) after the SBS modified emulsified asphalt is completely added into the beaker, putting the beaker into an emulsifying machine for emulsification, slowly changing the position of the machine head in the beaker for emulsification until the convection phenomenon appears by visual observation until the machine head is just immersed into the emulsified asphalt, and preparing the modified emulsified asphalt.
Wherein the mass concentration of the SBS modifier is 4 g/L.
Wherein the mass concentration of the sulfur stabilizer is 2 g/L.
Wherein the mass concentration of the cross-linking agent is 1 g/L.
Compared with the prior art, the modified emulsified asphalt prepared by the invention has better rheological property, maintains a homogeneous phase state during storage, can effectively resist ultraviolet light, heat and water damage, and does not release harmful substances to the environment; and the modified emulsified asphalt has simple production, better comprehensive performance and best anti-rutting performance.
Detailed Description
The present invention will be described in further detail with reference to examples. It should be understood that the preparation methods described in the examples are only for illustrating the present invention and are not to be construed as limiting the present invention, and that the simple modifications of the preparation methods of the present invention based on the concept of the present invention are within the scope of the present invention as claimed.
Example 1
The modified emulsified asphalt comprises, by weight, 10 parts of propylene oxide, 15 parts of propionic acid, 5 parts of aniline, 5 parts of tetradecyl dimethyl tertiary amine, 20 parts of base asphalt, 2 parts of SBS modifier, 3 parts of sulfur stabilizer, 2 parts of crosslinking agent, 3 parts of dilute hydrochloric acid and 5 parts of anhydrous calcium chloride.
A preparation method of modified emulsified asphalt comprises the following steps:
placing propylene oxide, propionic acid and water in a 250mL single-neck round-bottom flask; weighing aniline in a constant pressure funnel, dropwise adding for 30min, and stirring at 25 ℃ for reacting for 18 h; after the reaction is finished, removing the upper water layer, and washing the organic layer with water for 3 times; recrystallizing with ethyl acetate/petroleum ether, filtering, and vacuum drying to obtain white powder, i.e. intermediate I; weighing tetradecyl dimethyl tertiary amine, placing in 250mL, weighing intermediate I, dissolving in anhydrous ethanol, transferring to a constant pressure funnel, dripping for 30min, and stirring at 80 deg.C for reflux reaction for 8 h; after the reaction is finished, removing the solvent, and recrystallizing for 3 times by using acetone/ethyl acetate to obtain an emulsifier;
step two, heating the base asphalt to 180 ℃, adding the base asphalt into a high-shear dispersion emulsifying machine, then adding an SBS modifier, shearing the mixture at the speed of 3000r/min at 170 ℃ for 30min, stirring the mixture for 2h, keeping the temperature of 175-;
step three, adding distilled water heated to 70 ℃ into a beaker, uniformly stirring the prepared emulsifier, pouring the emulsifier into the beaker, and uniformly stirring the water and the emulsifier by using a glass rod; adding dilute hydrochloric acid to adjust the pH value, and comparing an acidic pH test paper with a standard and standard colorimetric card until the pH value is adjusted to 2-3; adding anhydrous calcium chloride, stirring to obtain soap liquid, and keeping the temperature of the soap liquid at about 70 ℃ all the time in the process;
pouring the weighed SBS modified asphalt with the temperature of 150-160 ℃ into a beaker filled with soap solution slowly, and stirring by using a glass rod continuously to prepare emulsified asphalt; and (3) after the SBS modified emulsified asphalt is completely added into the beaker, putting the beaker into an emulsifying machine for emulsification, slowly changing the position of the machine head in the beaker for emulsification until the convection phenomenon appears by visual observation until the machine head is just immersed into the emulsified asphalt, and preparing the modified emulsified asphalt.
Wherein the mass concentration of the SBS modifier is 4 g/L.
Wherein the mass concentration of the sulfur stabilizer is 2 g/L.
Wherein the mass concentration of the cross-linking agent is 1 g/L.
Example 2
The modified emulsified asphalt comprises, by weight, 20 parts of propylene oxide, 30 parts of propionic acid, 10 parts of aniline, 10 parts of tetradecyl dimethyl tertiary amine, 40 parts of base asphalt, 4 parts of SBS modifier, 8 parts of sulfur stabilizer, 5 parts of crosslinking agent, 6 parts of dilute hydrochloric acid and 10 parts of anhydrous calcium chloride.
A preparation method of modified emulsified asphalt comprises the following steps:
placing propylene oxide, propionic acid and water in a 250mL single-neck round-bottom flask; weighing aniline in a constant pressure funnel, dropwise adding for 30min, and stirring at 25 ℃ for reacting for 18 h; after the reaction is finished, removing the upper water layer, and washing the organic layer with water for 3 times; recrystallizing with ethyl acetate/petroleum ether, filtering, and vacuum drying to obtain white powder, i.e. intermediate I; weighing tetradecyl dimethyl tertiary amine, placing in 250mL, weighing intermediate I, dissolving in anhydrous ethanol, transferring to a constant pressure funnel, dripping for 30min, and stirring at 80 deg.C for reflux reaction for 8 h; after the reaction is finished, removing the solvent, and recrystallizing for 3 times by using acetone/ethyl acetate to obtain an emulsifier;
step two, heating the base asphalt to 180 ℃, adding the base asphalt into a high-shear dispersion emulsifying machine, then adding an SBS modifier, shearing the mixture at the speed of 3000r/min at 170 ℃ for 30min, stirring the mixture for 2h, keeping the temperature of 175-;
step three, adding distilled water heated to 70 ℃ into a beaker, uniformly stirring the prepared emulsifier, pouring the emulsifier into the beaker, and uniformly stirring the water and the emulsifier by using a glass rod; adding dilute hydrochloric acid to adjust the pH value, and comparing an acidic pH test paper with a standard and standard colorimetric card until the pH value is adjusted to 2-3; adding anhydrous calcium chloride, stirring to obtain soap liquid, and keeping the temperature of the soap liquid at about 70 ℃ all the time in the process;
pouring the weighed SBS modified asphalt with the temperature of 150-160 ℃ into a beaker filled with soap solution slowly, and stirring by using a glass rod continuously to prepare emulsified asphalt; and (3) after the SBS modified emulsified asphalt is completely added into the beaker, putting the beaker into an emulsifying machine for emulsification, slowly changing the position of the machine head in the beaker for emulsification until the convection phenomenon appears by visual observation until the machine head is just immersed into the emulsified asphalt, and preparing the modified emulsified asphalt.
Wherein the mass concentration of the SBS modifier is 4 g/L.
Wherein the mass concentration of the sulfur stabilizer is 2 g/L.
Wherein the mass concentration of the cross-linking agent is 1 g/L.
Example 3
The modified emulsified asphalt comprises, by weight, 12 parts of propylene oxide, 20 parts of propionic acid, 8 parts of aniline, 10 parts of tetradecyl dimethyl tertiary amine, 30 parts of base asphalt, 2 parts of SBS modifier, 5 parts of sulfur stabilizer, 5 parts of crosslinking agent, 3 parts of dilute hydrochloric acid and 5 parts of anhydrous calcium chloride.
A preparation method of modified emulsified asphalt comprises the following steps:
placing propylene oxide, propionic acid and water in a 250mL single-neck round-bottom flask; weighing aniline in a constant pressure funnel, dropwise adding for 30min, and stirring at 25 ℃ for reacting for 18 h; after the reaction is finished, removing the upper water layer, and washing the organic layer with water for 3 times; recrystallizing with ethyl acetate/petroleum ether, filtering, and vacuum drying to obtain white powder, i.e. intermediate I; weighing tetradecyl dimethyl tertiary amine, placing in 250mL, weighing intermediate I, dissolving in anhydrous ethanol, transferring to a constant pressure funnel, dripping for 30min, and stirring at 80 deg.C for reflux reaction for 8 h; after the reaction is finished, removing the solvent, and recrystallizing for 3 times by using acetone/ethyl acetate to obtain an emulsifier;
step two, heating the base asphalt to 180 ℃, adding the base asphalt into a high-shear dispersion emulsifying machine, then adding an SBS modifier, shearing the mixture at the speed of 3000r/min at 170 ℃ for 30min, stirring the mixture for 2h, keeping the temperature of 175-;
step three, adding distilled water heated to 70 ℃ into a beaker, uniformly stirring the prepared emulsifier, pouring the emulsifier into the beaker, and uniformly stirring the water and the emulsifier by using a glass rod; adding dilute hydrochloric acid to adjust the pH value, and comparing an acidic pH test paper with a standard and standard colorimetric card until the pH value is adjusted to 2-3; adding anhydrous calcium chloride, stirring to obtain soap liquid, and keeping the temperature of the soap liquid at about 70 ℃ all the time in the process;
pouring the weighed SBS modified asphalt with the temperature of 150-160 ℃ into a beaker filled with soap solution slowly, and stirring by using a glass rod continuously to prepare emulsified asphalt; and (3) after the SBS modified emulsified asphalt is completely added into the beaker, putting the beaker into an emulsifying machine for emulsification, slowly changing the position of the machine head in the beaker for emulsification until the convection phenomenon appears by visual observation until the machine head is just immersed into the emulsified asphalt, and preparing the modified emulsified asphalt.
Wherein the mass concentration of the SBS modifier is 4 g/L.
Wherein the mass concentration of the sulfur stabilizer is 2 g/L.
Wherein the mass concentration of the cross-linking agent is 1 g/L.
Example 4
The modified emulsified asphalt comprises, by weight, 14 parts of propylene oxide, 23 parts of propionic acid, 8 parts of aniline, 6 parts of tetradecyl dimethyl tertiary amine, 25 parts of base asphalt, 3 parts of SBS modifier, 8 parts of sulfur stabilizer, 2 parts of crosslinking agent, 4 parts of dilute hydrochloric acid and 9 parts of anhydrous calcium chloride.
A preparation method of modified emulsified asphalt comprises the following steps:
placing propylene oxide, propionic acid and water in a 250mL single-neck round-bottom flask; weighing aniline in a constant pressure funnel, dropwise adding for 30min, and stirring at 25 ℃ for reacting for 18 h; after the reaction is finished, removing the upper water layer, and washing the organic layer with water for 3 times; recrystallizing with ethyl acetate/petroleum ether, filtering, and vacuum drying to obtain white powder, i.e. intermediate I; weighing tetradecyl dimethyl tertiary amine, placing in 250mL, weighing intermediate I, dissolving in anhydrous ethanol, transferring to a constant pressure funnel, dripping for 30min, and stirring at 80 deg.C for reflux reaction for 8 h; after the reaction is finished, removing the solvent, and recrystallizing for 3 times by using acetone/ethyl acetate to obtain an emulsifier;
step two, heating the base asphalt to 180 ℃, adding the base asphalt into a high-shear dispersion emulsifying machine, then adding an SBS modifier, shearing the mixture at the speed of 3000r/min at 170 ℃ for 30min, stirring the mixture for 2h, keeping the temperature of 175-;
step three, adding distilled water heated to 70 ℃ into a beaker, uniformly stirring the prepared emulsifier, pouring the emulsifier into the beaker, and uniformly stirring the water and the emulsifier by using a glass rod; adding dilute hydrochloric acid to adjust the pH value, and comparing an acidic pH test paper with a standard and standard colorimetric card until the pH value is adjusted to 2-3; adding anhydrous calcium chloride, stirring to obtain soap liquid, and keeping the temperature of the soap liquid at about 70 ℃ all the time in the process;
pouring the weighed SBS modified asphalt with the temperature of 150-160 ℃ into a beaker filled with soap solution slowly, and stirring by using a glass rod continuously to prepare emulsified asphalt; and (3) after the SBS modified emulsified asphalt is completely added into the beaker, putting the beaker into an emulsifying machine for emulsification, slowly changing the position of the machine head in the beaker for emulsification until the convection phenomenon appears by visual observation until the machine head is just immersed into the emulsified asphalt, and preparing the modified emulsified asphalt.
Wherein the mass concentration of the SBS modifier is 4 g/L.
Wherein the mass concentration of the sulfur stabilizer is 2 g/L.
Wherein the mass concentration of the cross-linking agent is 1 g/L.
Example 5
The modified emulsified asphalt comprises, by weight, 18 parts of propylene oxide, 25 parts of propionic acid, 9 parts of aniline, 6 parts of tetradecyl dimethyl tertiary amine, 35 parts of base asphalt, 4 parts of SBS modifier, 7 parts of sulfur stabilizer, 4 parts of crosslinking agent, 6 parts of dilute hydrochloric acid and 8 parts of anhydrous calcium chloride.
A preparation method of modified emulsified asphalt comprises the following steps:
placing propylene oxide, propionic acid and water in a 250mL single-neck round-bottom flask; weighing aniline in a constant pressure funnel, dropwise adding for 30min, and stirring at 25 ℃ for reacting for 18 h; after the reaction is finished, removing the upper water layer, and washing the organic layer with water for 3 times; recrystallizing with ethyl acetate/petroleum ether, filtering, and vacuum drying to obtain white powder, i.e. intermediate I; weighing tetradecyl dimethyl tertiary amine, placing in 250mL, weighing intermediate I, dissolving in anhydrous ethanol, transferring to a constant pressure funnel, dripping for 30min, and stirring at 80 deg.C for reflux reaction for 8 h; after the reaction is finished, removing the solvent, and recrystallizing for 3 times by using acetone/ethyl acetate to obtain an emulsifier;
step two, heating the base asphalt to 180 ℃, adding the base asphalt into a high-shear dispersion emulsifying machine, then adding an SBS modifier, shearing the mixture at the speed of 3000r/min at 170 ℃ for 30min, stirring the mixture for 2h, keeping the temperature of 175-;
step three, adding distilled water heated to 70 ℃ into a beaker, uniformly stirring the prepared emulsifier, pouring the emulsifier into the beaker, and uniformly stirring the water and the emulsifier by using a glass rod; adding dilute hydrochloric acid to adjust the pH value, and comparing an acidic pH test paper with a standard and standard colorimetric card until the pH value is adjusted to 2-3; adding anhydrous calcium chloride, stirring to obtain soap liquid, and keeping the temperature of the soap liquid at about 70 ℃ all the time in the process;
pouring the weighed SBS modified asphalt with the temperature of 150-160 ℃ into a beaker filled with soap solution slowly, and stirring by using a glass rod continuously to prepare emulsified asphalt; and (3) after the SBS modified emulsified asphalt is completely added into the beaker, putting the beaker into an emulsifying machine for emulsification, slowly changing the position of the machine head in the beaker for emulsification until the convection phenomenon appears by visual observation until the machine head is just immersed into the emulsified asphalt, and preparing the modified emulsified asphalt.
Wherein the mass concentration of the SBS modifier is 4 g/L.
Wherein the mass concentration of the sulfur stabilizer is 2 g/L.
Wherein the mass concentration of the cross-linking agent is 1 g/L.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The modified emulsified asphalt is characterized by comprising, by weight, 10-20 parts of propylene oxide, 15-30 parts of propionic acid, 5-10 parts of aniline, 5-10 parts of tetradecyl dimethyl tertiary amine, 20-40 parts of base asphalt, 2-4 parts of SBS modifier, 3-8 parts of sulfur stabilizer, 2-5 parts of cross-linking agent, 3-6 parts of dilute hydrochloric acid and 5-10 parts of anhydrous calcium chloride.
2. The modified emulsified asphalt as claimed in claim 1, wherein the SBS modifier has a mass concentration of 4 g/L.
3. The modified emulsified asphalt as claimed in claim 1, wherein the mass concentration of the sulfur stabilizer is 2 g/L.
4. The modified emulsified asphalt as claimed in claim 1, wherein the mass concentration of the cross-linking agent is 1 g/L.
5. The preparation method of the modified emulsified asphalt is characterized by comprising the following steps:
placing propylene oxide, propionic acid and water in a 250mL single-neck round-bottom flask; weighing aniline in a constant pressure funnel, dropwise adding for 30min, and stirring at 25 ℃ for reacting for 18 h; after the reaction is finished, removing the upper water layer, and washing the organic layer with water for 3 times; recrystallizing with ethyl acetate/petroleum ether, filtering, and vacuum drying to obtain white powder, i.e. intermediate I; weighing tetradecyl dimethyl tertiary amine, placing in 250mL, weighing intermediate I, dissolving in anhydrous ethanol, transferring to a constant pressure funnel, dripping for 30min, and stirring at 80 deg.C for reflux reaction for 8 h; after the reaction is finished, removing the solvent, and recrystallizing for 3 times by using acetone/ethyl acetate to obtain an emulsifier;
step two, heating the base asphalt to 180 ℃, adding the base asphalt into a high-shear dispersion emulsifying machine, then adding an SBS modifier, shearing the mixture at the speed of 3000r/min at 170 ℃ for 30min, stirring the mixture for 2h, keeping the temperature of 175-;
step three, adding distilled water heated to 70 ℃ into a beaker, uniformly stirring the prepared emulsifier, pouring the emulsifier into the beaker, and uniformly stirring the water and the emulsifier by using a glass rod; adding dilute hydrochloric acid to adjust the pH value, and comparing an acidic pH test paper with a standard and standard colorimetric card until the pH value is adjusted to 2-3; adding anhydrous calcium chloride, stirring to obtain soap liquid, and keeping the temperature of the soap liquid at about 70 ℃ all the time in the process;
pouring the weighed SBS modified asphalt with the temperature of 150-160 ℃ into a beaker filled with soap solution slowly, and stirring by using a glass rod continuously to prepare emulsified asphalt; and (3) after the SBS modified emulsified asphalt is completely added into the beaker, putting the beaker into an emulsifying machine for emulsification, slowly changing the position of the machine head in the beaker for emulsification until the convection phenomenon appears by visual observation until the machine head is just immersed into the emulsified asphalt, and preparing the modified emulsified asphalt.
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| CN113604066A (en) * | 2021-09-13 | 2021-11-05 | 勤山(上海)机场场道工程技术有限公司 | Self-crosslinking fog sealing material based on cationic water-based acrylic acid, preparation method and application |
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| CN113604066A (en) * | 2021-09-13 | 2021-11-05 | 勤山(上海)机场场道工程技术有限公司 | Self-crosslinking fog sealing material based on cationic water-based acrylic acid, preparation method and application |
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Application publication date: 20200630 |