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Super-hydrophobic asphalt pavement anti-freezing coating and preparing method thereof

An asphalt pavement, anti-icing technology, applied to coatings, roads, roads, etc., can solve the problems of complex preparation process, pavement structure damage, high cost, etc., and achieve simple preparation process, low-carbon and energy-saving materials, and short curing time Effect

Active Publication Date: 2019-04-16
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On December 4, 2017, in Xi'an City, Shaanxi Province, during the sprinkling process of the road surface, the water could not be quickly drained from the road surface, which caused the road surface to freeze, resulting in a series of collisions of 38 vehicles, causing many casualties and a large amount of economic losses.
Due to the rough surface of asphalt concrete, after the water drips, the heat releases and freezes, and the ice and rain concrete on the road interpenetrates each other to form a stable physical connection, which makes deicing difficult
(5) Indirect damage, the use of deicing salt after the pavement is frozen will cause greater damage to the pavement structure
However, there are few reports on the application of superhydrophobic materials in road anti-icing and deicing, and it is still in the initial stage of exploration.
In addition, the preparation process of super-hydrophobic materials is complex and expensive. Whether it is the construction of rough surfaces or the cost of fluorinating agents used to reduce the surface energy of materials, the cost is relatively high. The large-scale use of super-hydrophobic coatings is not suitable for the market in my country's road industry, so In order to be used in the road field of our country, it is necessary to reduce the cost of the material without reducing the performance of the material, simplify the preparation process of the material and be environmentally friendly.

Method used

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  • Super-hydrophobic asphalt pavement anti-freezing coating and preparing method thereof
  • Super-hydrophobic asphalt pavement anti-freezing coating and preparing method thereof
  • Super-hydrophobic asphalt pavement anti-freezing coating and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The simple and convenient superhydrophobic asphalt pavement anti-icing coating of the present embodiment, its preparation process is as follows:

[0031] Add 90 parts of PMHS, 20 parts of KH550, 20 parts of dibutyltin dilaurate and 930 parts of absolute ethanol into the beaker, stir at room temperature at a stirring rate of 2000rpm for 2 hours to fully react between them, and prepare Go out preliminary slurry; Then, add 130 parts of deionized water and 30 parts of ammoniacal liquor respectively in the preliminary slurry with glue tip dropper, the solute mass percentage of ammoniacal liquor is 25%, stirs 18 hours, reacts completely between reactant, At this time, the finished slurry of the functional layer is prepared; finally, the hydrophobic meteorological silica particles are added to the finished slurry of the functional layer and stirred to prepare the finished slurry, wherein the quality of the hydrophobic meteorological silica particles is the final product of the ...

Embodiment 2

[0043] The simple and convenient superhydrophobic asphalt pavement anti-icing coating of the present embodiment, its preparation process is as follows:

[0044] Add 95 parts of PMHS, 25 parts of KH550, 25 parts of dibutyltin dilaurate and 960 parts of absolute ethanol into the beaker, and stir at room temperature at a stirring rate of 2300rpm for 2.1h to fully react between them. Prepare a preliminary slurry; then, add 150 parts of deionized water and 35 parts of ammonia water to the preliminary slurry with a rubber dropper, the solute mass percentage of ammonia water is 25%, stir for 19 hours, and react completely between the reactants , the functional layer finished slurry is prepared at this time; finally, the hydrophobic meteorological silica particles are added into the functional layer finished slurry and stirred to prepare the finished slurry, wherein the mass of the hydrophobic meteorological silica particles is the functional layer 0.8% of the mass of the finished slu...

Embodiment 3

[0058] The simple and convenient superhydrophobic asphalt pavement anti-icing coating of the present embodiment, its preparation process is as follows:

[0059] Add 100 parts of PMHS, 30 parts of KH550, 30 parts of dibutyltin dilaurate and 990 parts of absolute ethanol into the beaker, and stir at room temperature at a stirring rate of 2500rpm for 2.2 hours to make them fully react, Prepare a preliminary slurry; then, add 180 parts of deionized water and 40 parts of ammonia water to the preliminary slurry with a rubber dropper, the solute mass percentage of ammonia water is 25%, stir for 20 hours, and react completely between the reactants , the functional layer finished slurry is prepared at this time; finally, the hydrophobic meteorological silica particles are added into the functional layer finished slurry and stirred to prepare the finished slurry, wherein the mass of the hydrophobic meteorological silica particles is the functional layer 1% of the mass of the finished sl...

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Abstract

The invention belongs to the technical field of the design of asphalt concrete pavement coatings, and relates to a super-hydrophobic asphalt pavement anti-freezing coating and a preparing method thereof. The coating comprises an adhesive layer arranged on the surface of a carrier pavement, a functional layer arranged on the surface of the adhesive layer, and anti-wear filler dispersed in the functional layer. The functional layer is a low-surface-energy material. Slurry of the adhesive layer is formed by mixing epoxy resin 128, an amine curing agent and an epoxy toughening agent 277. Slurry ofthe functional layer is formed by mixing MHX-1107 hydrogen-containing silicone oil, gamma-aminopropyl triethoxysilane, dibutyltin dilaurate, absolute ethyl alcohol, ammonium hydroxide and deionized water. The anti-wear filler is evenly dispersed in the slurry of the functional layer. The performance of the super-hydrophobic asphalt pavement anti-freezing coating can completely meet the requirements for super hydrophobicity, freezing resistance, wear resistance, high friction coefficient and the like.

Description

technical field [0001] The invention belongs to the technical field of asphalt concrete pavement coating design, and relates to an environmentally friendly, economical and simple superhydrophobic asphalt pavement anti-icing coating and a preparation method thereof. Background technique [0002] In most parts of our country, the road surface will freeze in winter, and the road surface after freezing will have a huge impact on traffic, human production and life. On December 4, 2017, in Xi'an City, Shaanxi Province, during the sprinkling process of the road surface, the water could not be quickly drained from the road surface, which caused the road surface to freeze, resulting in a series of collisions of 38 vehicles, causing many casualties and a large number of economic losses. On January 10, 2008, my country's Northwest, Southwest, Central Plains, and South China successively experienced the largest and longest-lasting rainy and snowy weather, which had an extremely adverse ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/05C09D7/63C09D7/61E01C11/24
CPCC08L2205/025C08L2205/03C08L2205/06C09D183/04C09D7/61C09D7/63C09D7/70E01C11/245C08L63/00C08K7/26C08K5/544
Inventor 张争奇赵富强方滢张世豪杨建华田中男张英楠唐周鸣王佳蓉许铖张伟王素青连超
Owner CHANGAN UNIV
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