Environment-friendly asphalt warm mixing agent, preparation and application

A warm mix agent and asphalt technology, applied in building thermal insulation materials, climate change adaptation, building components, etc., can solve the problems of dust pollution, reduce asphalt viscosity, reduce low temperature crack resistance, etc., achieve energy saving and emission reduction effect, reduce surface Tension, the effect of increasing fluidity

Active Publication Date: 2017-10-10
HAISO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The foam acts as a lubricant, so that the mixture has better mixability at a lower temperature (warm mix asphalt mixture at 120-130°C), but the problem of dust pollution is inevitable during the production of zeolite The organic viscosity-reducing type is to add a rheology modifier to the asphalt, such as adding Sasobit wax to the asphalt, that is, a polyethylene wax with a long carbon chain to reduce the viscosity of the asphalt, improve the high temperatu

Method used

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  • Environment-friendly asphalt warm mixing agent, preparation and application
  • Environment-friendly asphalt warm mixing agent, preparation and application
  • Environment-friendly asphalt warm mixing agent, preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] 0.21 mol of oxalic acid was added to 0.2 mol of toluene solution of allyl alcohol-based polyoxyethylene-propylene ether with a molecular weight of 1600, heated and stirred for esterification, reacted at 100°C for 8 hours, and monitored by titration of acid value reaction. When the acid value did not change, 0.22 mol of diethylenetriamine was added dropwise to the flask. After 2 hours of dropping, the reaction was carried out at 110°C for 4 hours. The reaction was monitored by titrating the amine value. During the reaction, a water trap was used to remove the water during the reaction. After the reaction was completed, toluene was distilled off under reduced pressure. Weigh 60 parts of the above-mentioned amidation reaction product, add 40 parts of distilled water and emulsify for 30 minutes through a high-speed disperser, and prepare a 60 wt% warming agent concentrate.

Example Embodiment

[0030] Example 2

[0031] 0.3 mol of malonic acid was added to 0.3 mol of toluene solution with a molecular weight of 800 allyl alcohol-based polyoxyethylene-propylene ether, heated and stirred for esterification, reacted at 90°C for 12 hours, and the reaction was monitored by titrating the acid value . When the acid value no longer changes, 0.36 mol of butanediamine is added dropwise to the flask. After 2 hours of dropping, the reaction is carried out at 120°C for 6 hours. The reaction is monitored by titrating the amine value. During the reaction, a water trap was used to remove the water during the reaction. After the reaction was completed, toluene was distilled off under reduced pressure. Weigh 65 parts of the above-mentioned amidation reaction product, add 35 parts of distilled water and emulsify for 30 minutes through a high-speed disperser, to prepare a 65% by weight warming agent concentrate.

Example Embodiment

[0032] Example 3

[0033] 0.51 mol of succinic acid was added to 0.5 mol of toluene solution with a molecular weight of 320 allyl alcohol-based polyoxyethylene-propylene ether, and the temperature was raised and stirred for esterification reaction. The reaction was carried out at 110°C for 10 hours, and the reaction was monitored by titrating the acid value. When the acid value no longer changes, 0.52 mol of polyethylene polyamine is added dropwise to the flask. After 2 hours of dropping, the reaction is carried out at 100°C for 8 hours. The reaction is monitored by titrating the amine value. During the reaction, a water trap was used to remove the water during the reaction. After the reaction, the water and toluene were distilled off under reduced pressure. Weigh 70 parts of the above amidation reaction product, add 30 parts of distilled water and emulsify for 30 minutes through a high-speed disperser, to prepare a 70wt% warming agent concentrate.

[0034] Influence of Environme...

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Abstract

The invention relates to an environment-friendly asphalt warm mixing agent and a preparation method thereof. The environment-friendly asphalt warm mixing agent is acquired in the manner of esterification reaction of allyl alcohol polyoxyethylene-propylene ester and excessive saturated binary acid and then amidation reaction with organic amine. The allyl alcohol polyoxyethylene-propylene ester has the structural formula as follows, wherein the molecular weight is Mn more than or equal to 320 but less than or equal to 1600. After the asphalt warm mixing agent provided by the invention is added to asphalt, the surface tension of the asphalt can be reduced, the liquidity of the asphalt can be increased, the stirring and construction forming temperature of the asphalt mixture can be reduced, the energy consumption and the harmful gas emission can be reduced, the asphalt ageing can be delayed and the service life of the asphalt road can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of asphalt additive preparation, and in particular relates to an environment-friendly asphalt warm mix agent, its preparation and application. Background technique [0002] Warm mix asphalt technology refers to the use of specific methods or additives to reduce the viscosity of asphalt mixture at lower temperatures, so as to achieve good construction performance and road performance. A new energy-saving and environmentally friendly technology. Compared with hot mix asphalt mixture, warm mix asphalt mixture has the advantages of saving energy and reducing consumption, reducing harmful gas and smoke emissions, reducing the aging degree of asphalt mixing, and prolonging the construction season of asphalt pavement. [0003] At present, there are many types of warm-mix asphalt technologies, mainly including Aspha-Min (asphalt mineral method), Sasobit wax, Evotherm (Yilu), Rediset WMA and other technologies. Acco...

Claims

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Application Information

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IPC IPC(8): C08G65/333C08L95/00C08L71/02C04B26/26C04B24/32
CPCC04B24/32C04B26/26C04B2111/0075C08G65/3322C08G65/33306C08L95/00C08L71/02C04B14/02Y02A30/30
Inventor 赵帆王友奎段冲
Owner HAISO TECH
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