High-stability waterborne epoxy resin modified emulsified asphalt and preparation method thereof

A technology of water-based epoxy resin and emulsified asphalt, which can be applied to cohesive pavement paved on site, building components, building insulation materials, etc. It can solve the problems of unfavorable rapid opening of traffic, unsmooth spraying construction, and slow strength formation speed. Achieve extended working time, reduce the risk of thickening or segregation, and low kinematic viscosity

Active Publication Date: 2020-07-03
福建省交通科研院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the water-based epoxy resin and water-based curing agent contained in this type of composite binder usually start to react after the system is blended, it is required that the material be used within a few hours or even less after production, otherwise it will cause The thickening phenomenon cannot be sprayed smoothly; on the other hand, if the water-based epoxy resin and water-based curing agent system with a long curing speed are selected, it is easy to cause the strength formation speed of the seal layer to be too slow after construction, which is not conducive to the rapid opening of traffic

Method used

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  • High-stability waterborne epoxy resin modified emulsified asphalt and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] According to the mass fraction, 4 parts of organic bentonite and 0.02 parts of hydroxyethyl cellulose were added to 30.88 parts of water, and stirred at a high speed for 120 minutes with a high-speed disperser at a speed of 1500 r / min to obtain a thickened slurry JY1; Hexaalkyltrimethylammonium chloride, 1.8 parts of cetyl alcohol polyoxyethylene ether and 10 parts of ARADUR® 250 polyamide curing agent (supplied by Huntsman Company of the United States, active hydrogen equivalent of 425-455g / eq) were added to the slurry JY1 , and heated to 50°C, stirred at a high speed for 30 minutes, and the rotation speed was 1000r / min, then adjusted the pH value of the system to 2.0 with industrial hydrochloric acid with a concentration of 33%, and obtained mixed soap liquid ZY1, which was set aside; heated 40 parts of 70# base asphalt to 140-150°C, then add 0.1 part of tall oil fatty acid into the base asphalt while stirring, and after stirring and dispersing evenly, carry out high-s...

Embodiment 2

[0030] According to the mass fraction, 5 parts of lithium-based bentonite and 0.2 parts of polyvinyl alcohol (grade 17-99) were added to 37.5 parts of water, and stirred at a high speed for 60 minutes with a high-speed disperser at a speed of 2000 r / min to obtain a thickened slurry JY2; 0.6 parts of dodecyl dimethyl benzyl ammonium chloride, 0.3 parts of nonylphenol polyoxyethylene ether-10 and 6 parts of ARADUR® 22 modified fatty amine curing agent (supplied by Huntsman Company of the United States, the active hydrogen equivalent is 810-830g / eq) into the slurry JY2, heated to 60°C, stirred at a high speed for 60 minutes, and the rotation speed was 500r / min, then adjusted the pH value of the system to 3.0 with industrial phosphoric acid with a concentration of 85%, and obtained the mixed soap liquid ZY2. Standby; heat 45 parts of 70# base asphalt to 135-145°C, then add 0.5 parts of rosin acid to the base asphalt while stirring, and after stirring and dispersing evenly, pass the...

Embodiment 3

[0032] According to the mass fraction, 3 parts of sodium bentonite and 0.03 parts of hydroxymethyl cellulose were added to 28.27 parts of water, and stirred at a high speed for 120 minutes with a high-speed disperser at a speed of 2000 r / min to obtain a thickened slurry JY3; Octadecyltrimethylammonium bromide, 2.5 parts of octylphenol polyoxyethylene ether-10 and 3 parts of 1,3-cyclohexanedimethylamine (supplied by Sinopharm Chemical Reagent Beijing Co., Ltd., purity 99.0%) were added to In the slurry JY3, heated to 40°C, stirred at a high speed for 60 minutes, and the rotation speed was 1000r / min, and then adjusted the pH value of the system to 4.0 with industrial hydrochloric acid with a concentration of 33%, to obtain a mixed soap liquid ZY3, and set aside; 35 parts of 90# base Heat the asphalt to 130-140°C, then add 0.2 parts of stearic acid to the base asphalt while stirring, and after stirring and dispersing evenly, carry out high-speed shear emulsification through the co...

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Abstract

The invention discloses high-stability waterborne epoxy resin modified emulsified asphalt and a preparation method thereof, belonging to the technical field of road materials. The high-stability waterborne epoxy resin modified emulsified asphalt comprises the following raw materials in percentage by mass: 35%-45% of matrix asphalt, 0.9%-3% of an emulsifier, 3%-5% of a bentonite thixotropic agent,4%-27% of water-borne epoxy resin, 3%-10% of a water-borne epoxy curing agent, 0.1%-0.5% of an anti-stripping agent, 0.02%-0.2% of a thickening agent, 0.5%-2% of a pH regulator and 28%-38% of water. The raw materials are subjected to shearing and emulsifying at a high speed via a colloid mill to obtain the asphalt. Through the thickening effect of the bentonite thixotropic agent and the thickeningagent, the workable time of a cementing material is greatly prolonged, and the risk of thickening and segregation of the cementing material in the process of storage and transportation is reduced; and meanwhile, the water-borne epoxy resin modified emulsified asphalt keeps low kinematic viscosity, so spraying construction can be smoothly carried out, and traffic can be rapidly recovered.

Description

technical field [0001] The invention belongs to the technical field of road materials, in particular to a highly stable water-based epoxy resin modified emulsified asphalt and a preparation method thereof. Background technique [0002] After the highway was built and put into use, the various functions of the pavement showed a trend of continuous attenuation under the action of traffic loads and various natural forces, especially the decline of surface functions characterized by insufficient anti-skid, which is likely to cause traffic accidents and seriously threaten travel safety. . Sealing technologies such as crushed stone seal and fiber seal are preventive maintenance technologies often used in my country to restore the anti-skid function of pavement. Asphalt binder has limited bonding ability and a small covering area for aggregates, which can easily cause loosening and falling off of aggregates in local areas, and even produce "flying stones", which brings secondary ri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/00C08L1/28C08L29/04C08K3/34C08K5/09C08J3/03E01C7/24E01C7/26
CPCC08L95/005C08J3/03E01C7/24E01C7/265C08L2205/03C08J2395/00C08L63/00C08L1/284C08K3/346C08K5/09C08L29/04
Inventor 王家主赵维裕杨龙清朱祖盛江建李森
Owner 福建省交通科研院有限公司
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