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Warm mix polymer modified asphalt mixture and preparation method thereof

A technology for modifying asphalt and polymers, applied in the direction of climate change adaptation, etc., can solve the problems of poor thermal stability and anti-aging performance of asphalt, environmental pollution, etc., and achieve improved anti-aging performance, shortened reaction time, and stable performance Effect

Active Publication Date: 2017-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In order to solve the problem that the processing and use temperature of polymer modified asphalt mixture is high in the prior art, which may easily cause environmental pollution or the heat stability and anti-aging performance of the asphalt are not good even though the use temperature can be reduced after adding warm mix agent , the present invention provides a warm-mix polymer modified asphalt mixture. A self-made warm mix agent is added to the used asphalt, which can significantly reduce the use temperature of polymer-modified asphalt and reduce the use of polymer-modified asphalt. At the same time, it can improve the thermal stability of asphalt and improve the anti-aging performance

Method used

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  • Warm mix polymer modified asphalt mixture and preparation method thereof
  • Warm mix polymer modified asphalt mixture and preparation method thereof
  • Warm mix polymer modified asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) Preparation of warm mix agent

[0064] Using Ni metal as a catalyst, the CO obtained after gasification of coal, and H 2 The synthesis reaction is carried out to obtain mixed alkanes in which alkanes with carbon numbers of 30 to 60 account for 90%.

[0065] ①Weigh 1000g of the above-mentioned mixed alkanes, about 1.2mol, put them in a closed container, heat to 480°C, add 3g of catalyst anhydrous CuCl 2 , keep introducing 0.89 mol of chlorine at this temperature, and feed nitrogen to keep the pressure of the reaction vessel at 3MPa, and react for 30min to obtain the intermediate;

[0066] ②Weigh 7000g of the four-line extracted oil with an aromatics content of 70%, and add 441g of complex [Cu(NH 3 ) 4 ] SO 4 And 44.1g of catalyst Cu, packed in another airtight container and heated to 350 ° C, at this temperature constant temperature reaction for 180min, to obtain aromatic complex components;

[0067] ③Introduce the aromatic hydrocarbon complexing component into ...

Embodiment 2

[0074] (1) Preparation of warm mix agent

[0075] Using Co metal as a catalyst, the CO obtained after gasification of coal, and H 2 The synthesis reaction is carried out to obtain mixed alkanes in which alkanes with carbon numbers of 30 to 130 account for 90%.

[0076] ① Weigh 3500g of the above-mentioned mixed alkanes, about 4.5mol, put them in a closed container, heat to 400°C, add 31.5g of catalyst anhydrous MnCl 2 , keep introducing 1.16mol of chlorine at this temperature, and feed nitrogen to keep the pressure of the reaction vessel at 5MPa, and react for 60min to obtain the intermediate;

[0077] ②Weigh 1000g of catalytic cracking oil slurry with an aromatics content of 63%, and add 19g of complex K to it 4 [Fe(CN) 6 ] and 1.9g of catalyst Fe were installed in another airtight container and heated to 270°C, and reacted at a constant temperature for 120min at this temperature to obtain the aromatic hydrocarbon complexing component;

[0078] ③Introduce the aromatic hyd...

Embodiment 3

[0085] (1) Preparation of warm mix agent

[0086] Using Fe metal as a catalyst, CO obtained from gasification of coal, and H 2 The synthesis reaction is carried out to obtain mixed alkanes in which alkanes with carbon numbers of 70 to 90 account for 90%.

[0087] ①Weigh 1000g of the above-mentioned mixed alkanes, about 0.8mol, put them in a closed container, heat to 440°C, add 6g of catalyst anhydrous NiCl 2 , keep the temperature and introduce 0.31mol of fluorine, and feed nitrogen to keep the pressure of the reaction vessel at 4MPa, and react for 45min to obtain the intermediate;

[0088] ②Weigh 3500g of phenolic refined extract oil with aromatics content of 78%, and add 164g of complex [Ni(CO) 4 ] and 16.4g of catalyst Ni, packed in another airtight container and heated to 310 ° C, at this temperature constant temperature reaction 160min, to obtain aromatic complex components;

[0089] ③Introduce the aromatic hydrocarbon complexing component into the above-mentioned inte...

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Abstract

The invention discloses a warm mix polymer modified asphalt mixture and a preparation method thereof, wherein the mixture comprises 4.0-6.0 parts of a warm mix polymer modified asphalt, 1.0-3.0 parts of ore powder, and 91.0-95.0 parts of an aggregate, the warm mix polymer modified asphalt comprises 1-7 parts of a warm mix agent, 2-5 parts of a polymer, 88-97 parts of matrix asphalt, and sulfur, and the sulfur accounts for 0.01-0.07% of the total mass of the warm mix agent, the polymer and the matrix asphalt. The warm mix agent preparation method comprises: under the effect of a catalyst, carrying out a reaction on a macromolecule alkane and a halogen to obtain an intermediate; obtaining an aromatic hydrocarbon complexing component from aromatic hydrocarbon oil and a complexing compound under the effect of a catalyst; and introducing the aromatic hydrocarbon complexing component into the intermediate, carrying out a reaction, and aging to obtain the warm mix agent. According to the present invention, by adding the warm mix agent to the asphalt in the mixture, the warm mix effect is provided for the asphalt, the high temperature performance and the low temperature performance of the asphalt are considered, the thermal stability of the asphalt is improved, the aging resistance is improved, the thermal aging of the asphalt is reduced, and the harmful gas generation is reduced.

Description

technical field [0001] The invention relates to a warm-mix polymer modified asphalt mixture and a preparation method thereof, belonging to the field of petroleum industry and basic material chemistry. Background technique [0002] The asphalt mixture used in road engineering in the past is generally divided into two types according to the mixing construction temperature: cold mix asphalt mixture CMA (Cold Mix Asphalt) and hot mix asphalt mixture HMA (Hot Mix Asphalt). Cold-mix asphalt mixture is generally mixed and paved with emulsified asphalt or liquid asphalt and aggregate at room temperature, without heating the aggregate and binder, which can save a lot of energy. However, the initial strength of cold-mix asphalt mixture is low, and it is difficult to meet the requirements of important projects such as expressways and heavy-duty traffic roads. Hot mix asphalt mixture is widely used and has good road performance. However, in the production process of hot mix asphalt mi...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B24/00
CPCY02A30/30
Inventor 陈保莲范思远张静宁爱民李志军程国香
Owner CHINA PETROLEUM & CHEM CORP
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