Hydrophobic and anti-icing emulsified asphalt and preparation method thereof

A technology for emulsified asphalt and anti-icing, which is used in building components, building insulation materials, buildings, etc., can solve the problem of road anti-icing, which has not been truly solved, the adhesion between ice and asphalt pavement is large, and the method of removing ice and snow pollutes the environment, etc. problems, to achieve excellent long-term performance and durability of hydrophobic anti-icing, good road performance, and the effect of improving adhesion

Inactive Publication Date: 2017-12-15
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned winter ice and snow removal methods have problems such as polluting the environment, lack of long-term effect, poor durability, etc., and the problem of road surface anti-icing has not yet been truly resolved
Before the pavement freezes, ice water often has penetrated into the asphalt pavement layer, forming "ice whiskers" in the pores of the asphalt pavement structure, and "nailing" the pavement tightly, making the adhesion between the ice layer and the asphalt pavement very strong, even Using picks, planers, shovels, and shovels, the deicing effect is still not ideal

Method used

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  • Hydrophobic and anti-icing emulsified asphalt and preparation method thereof
  • Hydrophobic and anti-icing emulsified asphalt and preparation method thereof
  • Hydrophobic and anti-icing emulsified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Add 19g of slow-cracking and fast-setting cationic asphalt emulsifier and 0.6g of triethylenetetramine into 470g of tap water, heat to 70°C, stir well, adjust the pH value to 3 with dilute hydrochloric acid, and then fill it with a rubber dropper Add tap water at 70°C to 500g to obtain a soap solution.

[0038]2. Preheat the colloid mill to 70°C with hot water, add 500g of soap solution to the colloid mill, shear and stir for 30s, then slowly add 500g of SK90# matrix asphalt heated to 140°C, and use the colloid mill to shear at high speed for 3-5min , shearing and dispersing asphalt in soap solution to obtain emulsified asphalt.

[0039] 3. Using a high-speed shearing machine, add 9g of silane coupling agent KBM-503 and 150g of perfluoroalkyl compound with a fineness of 800 mesh to 1000g of emulsified asphalt, cut for 20min, then add 132g of water-based epoxy resin and 4.5g of three Ethylene tetramine is stirred evenly, and the hydrophobic anti-icing emulsified asph...

Embodiment 2

[0044] 1. Add 18g of slow-cracking and fast-setting cationic asphalt emulsifier and 0.5g of triethylenetetramine into 470g of tap water, heat to 70°C, stir well, adjust the pH value to 3 with dilute hydrochloric acid, and then fill it with a rubber dropper Add tap water at 70°C to 500g to obtain a soap solution.

[0045] 2. Preheat the colloid mill to 70°C with hot water, add 500g of soap solution to the colloid mill, shear and stir for 30s, then slowly add 500g of SK90# matrix asphalt heated to 140°C, and use the colloid mill to shear at high speed for 3-5min , shearing and dispersing asphalt in soap solution to obtain emulsified asphalt.

[0046] 3. Using a high-speed shearing machine, add 9g of silane coupling agent KBM-503 and 150g of fluorinated ethylene propylene copolymer with a fineness of 625 mesh to 1000g of emulsified asphalt, cut for 20min, then add 132g of water-based epoxy resin and 4.5g The triethylenetetramine is stirred evenly, and the hydrophobic anti-icing ...

Embodiment 3

[0048] 1. Add 18g of slow-cracking and fast-setting cationic asphalt emulsifier and 0.5g of triethylenetetramine into 470g of tap water, heat to 70°C, stir well, adjust the pH value to 3 with dilute hydrochloric acid, and then fill it with a rubber dropper Add tap water at 70°C to 500g to obtain a soap solution.

[0049] 2. Preheat the colloid mill to 70°C with hot water, add 500g of soap solution to the colloid mill, shear and stir for 30s, then slowly add 500g of SK90# matrix asphalt heated to 140°C, and use the colloid mill to shear at high speed for 3-5min , shearing and dispersing asphalt in soap solution to obtain emulsified asphalt.

[0050] 3. Using a high-speed shearing machine, add 9g of silane coupling agent KBM-503 and 150g of fluorinated ethylene propylene copolymer with a fineness of 800 mesh to 1000g of emulsified asphalt, cut for 20min, then add 132g of water-based epoxy resin and 4.5g The triethylenetetramine is stirred evenly, and the hydrophobic anti-icing ...

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Abstract

The invention discloses hydrophobic and anti-icing emulsified asphalt and a preparation method thereof. The hydrophobic and anti-icing emulsified asphalt is composed of matrix asphalt, a soap liquid, a hydrophobing agent, an interface agent, waterborne epoxy resin and a curing agent, wherein the hydrophobing agent is a polyfluoroalkoxy or a fluorinated ethylene propylene copolymer with the fineness of 625-1250mu. The hydrophobic and anti-icing emulsified asphalt disclosed by the invention is relatively good in adhesion to various aggregates and capable of adapting to relatively disadvantage interface conditions and still keeping good hydrophobicity after being permeated into a gap of an asphalt pavement and the insides of the surfaces of the aggregates and being acted by a vehicle load for a relatively long term. The hydrophobic and anti-icing emulsified asphalt id directly spread or is mixed and spread with the aggregates to form a hydrophobic and anti-icing layer by which the adhesive force of an ice layer and the asphalt pavement can be remarkably reduced, so that the ice layer of the asphalt pavement in winter is easily eliminated. A construction technology of the hydrophobic and anti-icing emulsified asphalt is simple, rapid, wide in application range, high in economic and social benefits, high in practicability, good in use effect and convenient to popularize.

Description

technical field [0001] The invention belongs to the technical field of road maintenance, and in particular relates to a hydrophobic anti-icing emulsified asphalt suitable for asphalt pavement in cold regions and a preparation method thereof. Background technique [0002] The antiskid performance of the road is a key factor to ensure the safe driving of vehicles. In winter, the snow and ice on the road will lead to a sharp decline in its anti-skid performance, and the tire adhesion coefficient will be greatly reduced, which will lead to a significant extension of the braking distance of the vehicle, loss of direction control, and frequent traffic accidents. At present, the deicing and deicing methods in various countries in the world mainly adopt mechanical removal and melting methods: [0003] 1. Mechanical deicing and snow removal methods: snow removal machines such as snow throwing vehicles, snow suction vehicles, snow push vehicles and jet snow removal vehicles are mainl...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L63/00C08L23/28C08J3/03
CPCC08J3/03C08J2395/00C08J2423/28C08J2463/00C08L95/005C08L63/00C08L23/28
Inventor 韩森刘建林王康张嘉豪杨晓飞高巍原健安
Owner CHANGAN UNIV
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