A method of formulating an anti-stripping agent

Abstract

The application discloses a preparation method of an anti-stripping agent. The method comprises the following steps: 1) preheating a graphene solution and a surfactant material solvent, and preheating a micro-channel mixer; 2) respectively calibrating the graphene solution and the surfactant material solvent; 3) respectively filling the graphene solution and the surfactant material solvent into filling devices, and then feeding into the micro-channel mixer; and 4) discharging the micro-channel mixer after reaction. The mass ratio of the graphene solution and the surfactant material solvent is 2:8. The graphene anti-stripping agent prepared by the preparation method of the anti-stripping agent can be simultaneously applied to organic polymer active compounds of acid and alkali two kinds of stone materials, has the characteristics of low solid content and dosage, stable performance and structure, not easy to age, hydrolyze, migrate and lose, long-acting, not easy to burn, non-toxic, non-irritating smell, safety and environmental protection and the like.

Description

Technical Field

[0001] This invention relates to the field of anti-stripping agents, and particularly to a method for preparing an anti-stripping agent. Background Technology

[0002] Many roads are now made of asphalt concrete, and anti-stripping agents are often added to prevent them from peeling off.

[0003] Anti-stripping agent is a high molecular compound that can form physical adsorption with the surface of aggregate (acidic stone) or react with the aggregate through its special chemical structure, forming a strong chemical bond between them. This improves the adhesion between asphalt and aggregate, giving it good resistance to heat aging and water damage, and enhances the adhesion between asphalt and aggregate as well as the strength against water damage, thus extending the service life of the pavement.

[0004] Existing anti-stripping agents are generally non-amine anti-stripping agents, which have many disadvantages, such as unstable performance, easy aging, hydrolysis, migration and loss, easy thermal decomposition, migration and loss, poor long-term effect, limited applicable range, and difficulty in being applicable to various types of stone such as acid and alkali. Summary of the Invention

[0005] To address the above problems, the present invention provides a method for preparing an anti-stripping agent.

[0006] According to one aspect of the present invention, a method for preparing an anti-stripping agent is provided, comprising the following steps:

[0007] 1) Preheat the graphene solution and the surfactant solvent, and simultaneously preheat the microchannel mixer:

[0008] 2) Calibrate the graphene solution and the surfactant solvent separately;

[0009] 3) The graphene solution and the surfactant solvent are respectively filled into the filling device and then introduced into the microchannel mixer;

[0010] 4) After the reaction, the microchannel mixer discharges the material;

[0011] The mass ratio of graphene solution to surfactant solvent is 2:8.

[0012] The graphene anti-stripping agent prepared by the method of this invention is an organic polymer active compound that is applicable to both acidic and alkaline stone materials. It has the characteristics of low solid content, stable performance and structure, not easy to age, hydrolyze, migrate and lose, long-lasting effect, non-flammable, non-toxic, odorless, safe and environmentally friendly.

[0013] In some embodiments, in step 1), the graphene solution and the surfactant solvent are preheated to 50-60°C. Preheating the graphene solution and the surfactant solvent to an appropriate temperature reduces their viscosity, ensuring uniform flow within the pipeline.

[0014] In some embodiments, in step 1), the microchannel mixer is preheated to 60°C. Therefore, preheating the microchannel mixer to an appropriate temperature can reduce the viscosity of the mixed solution, giving it better flowability.

[0015] In some implementations, in step 2), the calibration is performed using mass as the unit of measurement for 5 minutes. This establishes the calibration measurement method.

[0016] In some implementations, in step 2), the calibration is repeated until the difference between two calibrations is no higher than 0.2 g / min. Thus, repeated calibration ensures the accuracy of the material quantity.

[0017] In some embodiments, in step 3), the flow rate ratio of the graphene solution to the surfactant solvent is 7:3. This describes a suitable flow rate ratio for the graphene solution and the surfactant solvent during introduction.

[0018] In some embodiments, during step 4), the discharge rate of the microchannel mixer is 400g to 800g / h during the pilot test and 50kg to 60kg / h during the pilot test. This describes a suitable discharge rate range for the microchannel mixer.

[0019] In some implementations, the following steps are also included:

[0020] 5) The mixed solution after discharge is solidified and ground.

[0021] This allows for the production of solid powder anti-stripping agents.

[0022] In some embodiments, in step 5), the mixed solution is heated and ground using a grinder. Thus, a method for processing the discharged mixed solution is described, and the powder from the grinding process can be used as an anti-stripping agent. Attached Figure Description

[0023] Figure 1 This is a schematic diagram illustrating the principle of a method for preparing an anti-stripping agent according to an embodiment of the present invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Figure 1The diagram schematically illustrates a small-scale trial of a method for preparing an anti-stripping agent according to one embodiment of the present invention. Figure 1 As shown, this method mainly involves mixing graphene solution and surfactant solvent using a microchannel mixer. In the figure, the syringe-shaped structure represents the filling device, the coil-shaped structure represents the microchannel mixer, and the beaker-shaped structure represents the device for discharging and sampling.

[0026] The preparation method of the anti-stripping agent in this invention mainly includes the following steps.

[0027] The first step is to preheat the graphene solution and the surfactant solvent, and if necessary, perform filtration or other operations.

[0028] The graphene solution and the surfactant solvent should be preheated to 50-60℃ to reduce the solution viscosity, thereby ensuring that the graphene solution and the surfactant solvent can flow at a uniform speed in the pipeline.

[0029] Simultaneously, the microchannel mixer is also preheated. The preheating temperature of the microchannel mixer is preferably 60℃, which can also reduce the viscosity of the mixed solution, thereby giving it better fluidity.

[0030] The second step is to calibrate the graphene solution and the surfactant solvent separately.

[0031] During calibration, mass is the unit of measurement, and the measurement time is 5 minutes. Calibration can be repeated until the difference between two consecutive calibrations does not exceed the specified amount.

[0032] In the calibration process, the mass ratio of graphene solution to surfactant solvent should preferably be 2:8.

[0033] The third step involves mixing the graphene solution and the surfactant solvent.

[0034] The graphene solution and the surfactant solvent are respectively filled into their respective filling devices, and then sequentially introduced into a microchannel mixer for mixing. During the introduction, one solution can be introduced first, and the other solution can be introduced only after the flow rate has stabilized.

[0035] Preferably, the flow rate ratio of graphene solution to surfactant is 7:3.

[0036] The fourth step is to discharge the material from the microchannel mixer after the mixing reaction.

[0037] To ensure a complete reaction, multiple reaction cycles can be set up. For small-scale trials, the discharge rate of the microchannel mixer should be 400-800 g / h; for pilot-scale trials, the discharge rate should be 50-60 kg / h. The discharged solution can be used as an anti-stripping agent.

[0038] Furthermore, if it is necessary to preserve and transport the anti-stripping agent, it would be more convenient to convert it into a solid. Therefore, a fifth step is set up, which involves coagulating and grinding the discharged mixture into a solid powder.

[0039] Preferably, a suitable grinder is used during grinding, and heating is usually performed in conjunction with it.

[0040] The graphene anti-stripping agent solution prepared by the method of this invention is synthesized using advanced technology and a scientific formula of environmentally friendly, non-toxic, and odorless graphene and surfactant materials, and also has the following characteristics:

[0041] 1. The product has a low doping content, with the graphene solid content being only 0.2% to 0.4%;

[0042] 2. Stable performance and structure, not easily hydrolyzed, migrated, or lost;

[0043] 3. It is resistant to aging and has a long-lasting effect. It can withstand high temperatures of 160℃ for 6 hours and 165℃ for 48 hours.

[0044] 4. It is non-flammable, non-toxic, odorless, safe and environmentally friendly.

[0045] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A method for preparing an anti-stripping agent, characterized in that: Includes the following steps 1) Preheat the graphene solution and the surfactant solvent to 50-60℃, and simultaneously preheat the microchannel mixer to 60℃. 2) Calibrate the graphene solution and the surfactant solvent separately, repeating the calibration until the difference between the two calibrations is no higher than 0.2 g / min. The calibration is performed by mass and lasts for 5 min. 3) The graphene solution and the surfactant solvent are respectively filled into the filling device and then introduced into the microchannel mixer, wherein the flow rate ratio of the graphene solution and the surfactant solvent is 7:

3. 4) After the reaction, the microchannel mixer discharges the material. During the pilot test, the discharge rate of the microchannel mixer is 400g~800g / h, and during the pilot test, the discharge rate of the microchannel mixer is 50kg~60kg / h. The mass ratio of graphene solution to surfactant solvent is 2:

8.

2. The method for preparing an anti-stripping agent according to claim 1, characterized in that: It also includes the following steps 5) Solidify and grind the mixed solution after discharge.

3. The method for preparing an anti-stripping agent according to claim 2, characterized in that: In step 5), the mixture is heated and ground using a grinder.

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