A kind of warm mix polymer modified asphalt and preparation method thereof

A modified asphalt and polymer technology, which is applied in building construction, building insulation materials, bulk chemical production, etc., can solve the problems of environmental pollution, high service temperature, poor thermal stability and anti-aging performance of asphalt, etc. Achieve the effect of shortening reaction time, low production and use temperature, and improving anti-aging performance

Active Publication Date: 2019-05-21
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 problems in the prior art that the use temperature of polymer modified asphalt is relatively high, which is likely to cause environmental pollution or that the use temperature can be lowered after adding a warm mix agent, but the thermal stability and anti-aging performance of the asphalt are not good. The present invention provides A kind of warm mix polymer modified asphalt, adding a self-made warm mix agent, can significantly reduce the production and use temperature of polymer modified asphalt, reduce the air pollution caused by the production and use of polymer modified asphalt, and at the same time It can also improve the thermal stability of asphalt and improve the anti-aging performance

Method used

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  • A kind of warm mix polymer modified asphalt and preparation method thereof
  • A kind of warm mix polymer modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Preparation of warm mix agent

[0053] 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%.

[0054] 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;

[0055] ②Weigh 7000g of the fourth-line extraction oil with 70% aromatics content, and add 441g of complex [Cu(NH 3 ) 4 〕SO 4 , placed in another container and heated to 350°C, and kept stirring at this temperature for 180min to obtain aromatic hydrocarbon complex components;

[0056]③Introduce the aromatic hydrocarbon complexing component into the above-mentioned intermediate, keep th...

Embodiment 2

[0060] (1) Preparation of warm mix agent

[0061] 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%.

[0062] 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;

[0063] 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 ], placed in another airtight container and heated to 270°C, and stirred at a constant temperature for 120 minutes at this temperature to obtain the aromatic complex component;

[0064] ③Introduce the aromatic hydrocarbon complexing component into the ab...

Embodiment 3

[0068] (1) Preparation of warm mix agent

[0069] 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%.

[0070] 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;

[0071] ②Weigh 3500g of phenolic refined oil with aromatics content of 78%, and add 164g of complex [Ni(CO) 4 ], placed in another container and heated to 310°C, stirred at a constant temperature for 160min at this temperature to obtain the aromatic complex component;

[0072] ③Introduce the aromatic hydrocarbon complexing component into the above-mentioned intermediate, keep the temperature at ...

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Abstract

The invention provides warm-mixed polymer modified asphalt and a preparation method thereof. The asphalt is prepared from components in parts by mass as follows: 1-7 parts of a warm-mixing agent, 2-5 parts of a polymer, 88-97 parts of substrate asphalt as well as sulfur accounting for 0.01%-0.07% of the total mass of the three components. The warm-mixing agent is prepared with the following method: under the action of a catalyst, high polymer alkane firstly reacts with elementary halogen at a certain temperature and under certain pressure to produce an intermediate; aromatic oil and a complex are uniformly mixed to form an aromatic complex component; then the aromatic complex component reacts with the intermediate at a certain temperature to produce the warm-mixing agent. The warm-mixing agent used in the warm-mixed polymer modified asphalt can have a warm-mixing effect on asphalt, considers high / low-temperature performance of asphalt and can improve the thermal stability of asphalt, improve aging resistance, reduce thermal ageing of asphalt and decrease harmful gas production.

Description

technical field [0001] The invention relates to a warm mix asphalt, in particular to a warm mix polymer modified asphalt 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L23/06C08L23/12C08L27/06C08L67/02C08K11/00
CPCY02A30/30Y02P20/52
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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