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A kind of emulsification regeneration agent with workability and preparation method thereof

A technology for emulsifying regenerant and emulsifier, applied in building components, building insulation materials, buildings, etc., can solve the problems of high heating temperature, poor construction workability, etc., to improve the interface state, improve construction workability, and ensure long-term The effect of stability

Active Publication Date: 2022-03-11
HOHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: In view of the poor construction workability of recycled asphalt mixture in the prior art, and the high heating temperature when the regenerant is used, the present invention provides an emulsified regenerant with construction workability and its preparation method. The emulsified rejuvenator has low viscosity at normal temperature (20°C), has good fluidity and permeability, can be sprayed, can improve the ease of construction of RAP, and reduce the construction temperature

Method used

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  • A kind of emulsification regeneration agent with workability and preparation method thereof
  • A kind of emulsification regeneration agent with workability and preparation method thereof
  • A kind of emulsification regeneration agent with workability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation of emulsification regeneration agent A, step is as follows:

[0024] (1) Heat 55.8 parts by mass of the minus four-line extracted oil to 130°C, add 2.4 parts by mass of SBS modifier, and cut with a shear for 60 min. Then at 80°C, add 1.2 parts by mass of silane coupling agent KH 550, and after ultrasonic dispersion for 60 minutes, add 1.2 parts of sulfur powder and stir for 120 minutes at 120°C to prepare component A.

[0025] (2) Heat 39.2 parts by mass of water to 50°C, add 0.4 parts by mass of slow-cracking and fast-setting cationic emulsifier PRAC417 and 0.4 parts by mass of dilute hydrochloric acid with a mass fraction of 20%, stir until the flocs disappear, and adjust the pH to 2 , formulated as emulsion B.

[0026] (3) Heat component A to 100°C, then add emulsion B, and emulsify and shear at 3500 rpm for 45 min at 80°C to prepare emulsified regenerant, such as figure 1 shown.

Embodiment 2

[0028] The preparation of emulsification regeneration agent B, the steps are as follows:

[0029] (1) Heat 48.3 parts by mass of minus three-line extracted oil to 110°C, add 0.9 parts by mass of SBR modifier, and cut it with a shear for 75 min. Then at 90°C, add 0.6 parts by mass of chelating titanate coupling agent QX-311W, ultrasonically disperse for 45 minutes, then add 0.2 parts of polyisobutylene and stir for 140 minutes at 110°C to prepare Component A.

[0030] (2) Heat 49.5 parts by mass of water to 60°C, add 0.3 parts by mass of slow-cracking and fast-setting cationic emulsifier MQ65 and 0.2 parts by mass of dilute hydrochloric acid with a mass fraction of 20%, stir until the flocs disappear, and adjust the pH to 2.2 , formulated as emulsion B.

[0031] (3) Heat component A to 90°C, then add emulsion B, and emulsify and shear at 3000 rpm for 60 minutes at 70°C to prepare emulsified regenerant B.

Embodiment 3

[0033] The preparation of emulsification regeneration agent C, the steps are as follows:

[0034] (1) Heat 62 parts by mass of rubber oil to 140°C, add 3 parts by mass of EVA modifier and cut with a shear for 45 minutes. Then at 70°C, add 3 parts by mass of aluminum-zirconium coupling agent LD 139, ultrasonically disperse for 75 minutes, then add 2 parts of polyphosphoric acid and stir for 100 minutes at 140°C to prepare Component A.

[0035] (2) Heat 27.5 parts by mass of water to 30°C, add 0.5 parts by mass of slow-cracking and fast-setting cationic emulsifier PRAC417, 0.5 parts by mass of slow-cracking and fast-setting cationic emulsifier MQ65 and 1.5 parts by mass of dilute Sulfuric acid, stirred until the flocs disappeared, the pH was adjusted to 1.8, and emulsion B was prepared.

[0036] (3) Heat component A to 100°C, then add emulsion B, and emulsify and shear at 4000 rpm for 30 minutes at 90°C to prepare emulsified regenerant C.

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Abstract

The invention discloses an emulsification regeneration agent with ease of construction and a preparation method thereof. The raw materials of the emulsification regeneration agent are formulated in parts by mass as follows: 0.3~1 part of emulsifier, 0.2~2 part of stabilizer, 27.5~ 49.5 parts of water, 0.2~1.5 parts of acid, 0.9~3 parts of modifier, 0.6~3 parts of coupling agent, 48.3~62 parts of light oil. The emulsified rejuvenator with workability described in the present invention can not only restore the performance of aged asphalt well, improve the utilization rate of waste pavement materials, but also has a viscosity of 100-300mPa·s at normal temperature (20°C), and has Good fluidity and permeability, easy to spray, can improve the workability of recycled asphalt mixture, and reduce the mixing temperature by 5~16℃. The invention has great significance for promoting the recycling and sustainable development of waste resources.

Description

technical field [0001] The invention relates to asphalt pavement maintenance materials, in particular to an emulsified regeneration agent with ease of construction and a preparation method thereof. Background technique [0002] By the end of 2017, the total mileage of my country's highways had reached 4,773,500 kilometers, including 136,500 kilometers of expressways, ranking first in the world in terms of mileage. With the basic formation of my country's highway construction network and the increase in the number of years of operation, there are more and more large and medium-sized repairs and expansion projects. The waste and used asphalt pavement (RAP) produced by maintenance alone exceeds 20 million tons every year, and this figure is Also growing at a rate of 15%, how to deal with these wastes is a huge problem. [0003] Plant-mixed heat regeneration technology can not only reuse RAP, save costs, protect the environment, and is in line with the concept of waste resource ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L23/20C08L23/08C08K5/544C08K3/06C08K5/00C08K3/32
CPCC08L95/00C08K2003/329C08L53/02C08L9/06C08L23/22C08L23/0853C08K5/544C08K3/06C08K5/0091C08K3/32
Inventor 董夫强马辉唐伟李宁祝争艳秦成林詹贺于新
Owner HOHAI UNIV
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