Dispersion system of SBS modified emulsified asphalt, coating and preparation method

A dispersion system and emulsified asphalt technology, which is applied in asphalt coatings, coatings, etc., and can solve the problems of poor storage stability of emulsions

Pending Publication Date: 2022-05-10
CHINA FIRST METALLURGICAL GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the related art, the dispersion system of SBS and SBR modified emulsified asphalt, that is, the storage stability of the emulsion is poor

Method used

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  • Dispersion system of SBS modified emulsified asphalt, coating and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Heat 50 parts by mass of asphalt to a molten state at 180°C, then add 5 parts by mass of SBS modifier and 3 parts by mass of o-cresyl glycidyl ether, and stir at constant temperature for 2 hours to fully melt and mix to obtain a mixture a.

[0049] (2) Pour 5 parts by mass of stearylamine polyoxyethylene ether diquaternary ammonium emulsifier into 50 parts by mass of deionized water, stir at 80° C. for 1 hour until uniformly mixed to obtain soap liquid.

[0050] (3) Add mixture A and soap solution to the integrated colloid mill emulsifier at the same time, and shear and emulsify the mixture for 3 hours at a speed of 4500r / min to prepare an emulsion.

[0051] (4) Add 2.5 parts by mass of nano-ZnO to the emulsion, and continue to shear for 2 hours at a speed of 3000 r / min using an integrated colloid mill emulsifier.

[0052] (5) Finally, 3 parts by mass of vinyltriethoxysilane crosslinking agent was added, and stirred for 2 hours to obtain a modified emulsified aspha...

Embodiment 2

[0054] (1) Heat 50 parts by mass of asphalt to a molten state at 180°C, then add 10 parts by mass of SBS modifier and 2 parts by mass of o-cresyl glycidyl ether, and stir at constant temperature for 1 hour to fully melt and mix to obtain a mixture a.

[0055] (2) Pour 3 parts by mass of octadecylamine polyoxyethylene ether diquaternary ammonium emulsifier into 50 parts by mass of deionized water, stir at 80° C. for 1 hour until uniformly mixed to obtain soap liquid.

[0056] (3) Add mixture A and soap solution to the integrated colloid mill emulsifier at the same time, and shear and emulsify the mixture for 3 hours at a speed of 4500r / min to prepare an emulsion.

[0057] (4) Add 2 parts by mass of nano-ZnO to the emulsion, and continue to shear at 3000r / min for 2 hours with an integrated colloid mill emulsifier.

[0058] (5) Finally, 2 parts by mass of vinyltriethoxysilane crosslinking agent was added, and stirred for 2 hours to obtain a modified emulsified asphalt waterproof...

Embodiment 3

[0060] (1) Heat 50 parts by mass of asphalt to a molten state at 180°C, then add 15 parts by mass of SBS modifier and 1 part by mass of o-cresyl glycidyl ether, and stir at constant temperature for 2 hours to fully melt and mix to obtain a mixture a.

[0061] (2) Pour 5 parts by mass of stearylamine polyoxyethylene ether diquaternary ammonium emulsifier into 50 parts by mass of deionized water, stir at 80° C. for 1 hour until uniformly mixed to obtain soap liquid.

[0062] (3) Add mixture A and soap solution to the integrated colloid mill emulsifier at the same time, and shear and emulsify the mixture for 3 hours at a speed of 4500r / min to prepare an emulsion.

[0063] (4) Add 1 part by mass of nano-ZnO to the emulsion, and continue to shear at 3000r / min for 2 hours with an integrated colloid mill emulsifier.

[0064] (5) Finally, 2 parts by mass of vinyltriethoxysilane crosslinking agent was added, and stirred for 2 hours to obtain a modified emulsified asphalt waterproof co...

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Abstract

The invention discloses a dispersion system of SBS modified emulsified asphalt, a coating and a preparation method. According to the dispersion system, the coating and the preparation method of the SBS modified emulsified asphalt, the o-tolyl glycidyl ether and the nano-zinc oxide are compounded and added into the raw materials, the o-tolyl glycidyl ether can reduce the viscosity so as to improve the defects of high viscosity and difficult emulsification when the SBS is high in mixing amount, and the molecular chain of the o-tolyl glycidyl ether contains an epoxy group, so that the SBS modified emulsified asphalt has a good dispersion property. The SBS can react with carboxyl in asphalt to generate a covalent bond, namely the poor compatibility of SBS and asphalt molecules is improved by utilizing chemical group bonding with asphalt. Nano-zinc oxide has the characteristics of large specific surface area, large surface free energy and good dispersion effect, forms non-bonding interaction with asphalt to form a more stable structure, and can disperse SBS in the asphalt more uniformly, so that the storage stability of the SBS modified emulsified asphalt is effectively improved.

Description

technical field [0001] The application relates to the technical field of coatings, in particular to a dispersion system of SBS modified emulsified asphalt, a coating and a preparation method. Background technique [0002] Emulsified asphalt is an emulsion of asphalt droplets dispersed in a water-based system, and its viscosity is low enough to obtain sufficient workability at room temperature, thereby greatly reducing energy consumption and environmental pollution during construction. Emulsified asphalt has been widely used in various pavement surface treatments, such as slurry seal, micro-surfacing, mist seal, bond coat and gravel seal. These techniques are considered the most promising treatments for preventive pavement maintenance. However, the performance of emulsified asphalt coatings currently on the market is relatively poor, such as low mechanical strength, poor high and low temperature performance, low cohesive force, and short durability. These main disadvantages...

Claims

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Application Information

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IPC IPC(8): C09D195/00C09D153/02C09D7/61C09D7/63
CPCC09D195/00C09D7/61C09D7/63C08K2201/011C08K2003/2296C08L53/02C08K5/1515C08K3/22
Inventor 徐本春李柯王志成周紫晨张冰曾明
Owner CHINA FIRST METALLURGICAL GROUP
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