A kind of solid warm mixing modified double-effect asphalt modifier and preparation method thereof

An asphalt modifier and warm mixing technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of inability to achieve asphalt mixture road performance, modified asphalt performance decay, increase production costs, etc., to achieve improvement The effects of high temperature shear resistance and impact resistance, improved fluidity, and improved low temperature flex resistance

Active Publication Date: 2021-11-16
SHANDONG LUQIAO GROUP CO LTD +6
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the application of road engineering, when the traditional warm mix agent is used in the production of ordinary asphalt mixture, it can only realize the warm mix function, but it cannot improve the road performance of the asphalt mixture; in addition, the warm mix agent is used in modified asphalt When the mixture is produced, it is necessary to purchase the finished modified asphalt in advance, which not only increases the production cost, but also has the hidden danger of performance decay during storage of the modified asphalt and affecting the quality of the road surface.
Therefore, although the modification and warm mixing technology of asphalt mixture has been developed relatively maturely, there is no mature technology for the combination of warm mixing and modification of asphalt mixture.

Method used

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  • A kind of solid warm mixing modified double-effect asphalt modifier and preparation method thereof
  • A kind of solid warm mixing modified double-effect asphalt modifier and preparation method thereof
  • A kind of solid warm mixing modified double-effect asphalt modifier and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] This embodiment provides a solid warm-mix modified double-effect asphalt modifier, which is mainly prepared from the following raw materials: MAH-g-POE, lysine hydrochloride and polyethylene glycol monomethyl ether.

[0028] The preparation method of a solid warm-mix modified double-effect asphalt modifier in this example is as follows:

[0029] Step 1, add 300mL anhydrous toluene solvent in 2L there-necked flask, add 219.2g lysine hydrochloride and 350g MPEG350 (being the polyethylene glycol monomethyl ether of molecular weight 350) and stir, esterification takes place, The reaction was refluxed until anhydrous was formed; then solid sodium bicarbonate was added to continue stirring the reaction until no gas was released, and then the reaction was stopped; the reaction liquid was filtered and washed twice with toluene solution; then vacuum was carried out under the experimental conditions of 80°C and 0.98MPa Drying obtains 507g polyethylene glycol monomethyl ether lysi...

Embodiment 2

[0033] This embodiment provides a solid warm-mix modified double-effect asphalt modifier, which is mainly prepared from the following raw materials: MAH-g-POE, lysine hydrochloride and polypropylene glycol monomethyl ether.

[0034] The preparation method of a solid warm-mix modified double-effect asphalt modifier in this example is as follows:

[0035] Step 1, add 300mL anhydrous toluene solvent in the three-necked flask of 2L, add 219.2g lysine hydrochloride and 400g MPPG400 (polypropylene glycol monomethyl ether that molecular weight is 400) and stir, esterification takes place, and reaction is refluxed to Anhydrous was formed; then solid sodium bicarbonate was added to continue stirring the reaction until no gas was released and the reaction was stopped; the reaction solution was filtered and washed twice with toluene solution; then vacuum-dried under the experimental conditions of 80°C and 0.98MPa to obtain 557g Polypropylene glycol monomethyl ether lysine ester;

[0036...

Embodiment 3

[0039] This example provides a solid warm-mix modified double-effect asphalt modifier, which is mainly prepared from the following raw materials: MAH-g-POE, lysine hydrochloride, polyethylene glycol monomethyl ether and polypropylene glycol A mixture of monomethyl ethers.

[0040] The preparation method of a solid warm-mix modified double-effect asphalt modifier in this example is as follows:

[0041] Step 1, in the there-necked flask of 2L, add 300mL solvent anhydrous toluene, add 274.0g lysine hydrochloride and 200g MPEG400 (being the polyethylene glycol monomethyl ether that molecular weight is 400), 300g MPPG600 (being that molecular weight is 600 Polypropylene glycol monomethyl ether) is stirred, and esterification reaction takes place, and reaction is refluxed to anhydrous generation; Then add sodium bicarbonate solid and continue to stir reaction until no gas is released, then stop reaction; Reaction solution is filtered, washed with toluene solution for 2 Then carry o...

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Abstract

The invention provides a solid warm-mix modified double-effect asphalt modifier and a preparation method thereof, which is mainly prepared from the following raw materials: MAH-g-POE, lysine hydrochloride and polyether glycol monomethyl ether . The solid warm-mix modified double-effect asphalt modifier has dual functions of warm mix and modification. Specifically, the polyether segment contained in it has non-ionic surface activity and lubricating effect, which can reduce the surface interfacial tension between asphalt and aggregate stones, improve the fluidity of the asphalt mixture, and make the asphalt mixture far below the hot mixing temperature. Mix evenly with mineral materials to achieve warm mixing effect. The POE chain contained in it has strong toughness, which can effectively improve the high temperature shear resistance and impact resistance of asphalt mixture, thereby improving the high temperature rutting resistance and low temperature flex resistance of asphalt modified materials; the grafted horse The acid amide group has strong polarity, which makes the asphalt mixture and aggregate stones tightly wrapped, and the mixture is more uniform; realizes the modification effect and improves the pavement performance of the asphalt mixture.

Description

technical field [0001] The invention relates to the technical field of asphalt modification, in particular to a solid warm-mix modified double-effect asphalt modifier and a preparation method thereof. Background technique [0002] The traditional asphalt pavement construction method is the hot-mix asphalt mixture method. During the mixing, transportation and construction process, harmful gases will be released due to the mixing temperature, and a large amount of energy will be consumed, and carbon dioxide and other gases will be released. Therefore, in order to reduce exhaust emissions and reduce energy consumption, people began to develop energy-saving and environmentally friendly warm mix asphalt mixture. Warm mix asphalt mixture improves the workability of asphalt mixture by reducing the viscosity of asphalt binder, so that asphalt can be mixed and constructed at a relatively low temperature, while maintaining performance not lower than that of hot mix asphalt mixture ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/02C08G65/333C08L95/00C08L87/00
CPCC08G65/33396C08G81/025C08L95/00C08L87/005
Inventor 邹泰冯勋红董光彬郝晓君穆明浩张哲陈秀秀王盼毕玉峰耿立涛刘占斌王峥胡佩清刘新强赵景原郑君杨茂君
Owner SHANDONG LUQIAO GROUP CO LTD
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