Warm mix polymer modified asphalt and its preparation method

A technology for modifying asphalt and polymers, which is applied in building construction, building insulation materials, production of bulk chemicals, etc., can solve the problems of high service temperature, poor thermal stability and anti-aging performance of asphalt, and environmental pollution. Achieve the effect of low production and use temperature, improve anti-aging performance and shorten reaction time

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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  • Warm mix polymer modified asphalt and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Preparation of warm mixing agent

[0056] Using Ni metal as a catalyst, the CO obtained after coal gasification is combined with H 2 The synthesis reaction is carried out to obtain a mixed alkane with a carbon number of 30-60 alkane accounting for 90%.

[0057] ① Weigh 1000g of the above mixed alkanes, about 1.2mol, put it in a closed container, heat to 480℃, add 3g of catalyst anhydrous CuCl 2 , Keep this temperature and introduce 0.89 mol of chlorine, and pass nitrogen to keep the pressure of the reaction vessel at 3MPa, react for 30min to obtain the intermediate;

[0058] ②Weigh 7000g minus four-line extraction oil with 70% aromatic content, and add 441g complex [Cu(NH 3 ) 4 〕SO 4 And 44.1g of catalyst Cu, packed in another airtight container and heated to 350°C, reacted at this temperature for 180min at a constant temperature to obtain the aromatic complex component;

[0059] ③Introduce the aromatic complex component into the above intermediate, keep the temperature at 4...

Embodiment 2

[0064] (1) Preparation of warm mixing agent

[0065] Using Co metal as a catalyst, the CO obtained after coal gasification is combined with H 2 The synthesis reaction is carried out to obtain mixed alkanes with 90% carbon number of alkanes from 30 to 130.

[0066] ① Weigh 3500g of the above mixed alkanes, about 4.5mol, put them in a closed container, heat to 400℃, add 31.5g of catalyst anhydrous MnCl 2 , Keep this temperature and introduce 1.16mol of chlorine, and pass nitrogen to keep the pressure of the reaction vessel at 5MPa, react for 60min to obtain the intermediate;

[0067] ②Weigh 1000g of FCC oil slurry with 63% aromatic content, and add 19g of complex K to it 4 〔Fe(CN) 6 ] And 1.9g of catalyst Fe, packed in another airtight container and heated to 270°C, reacted at this temperature for 120 minutes at a constant temperature to obtain the aromatic hydrocarbon complex component;

[0068] ③Introduce the aromatic complex component into the above intermediate, keep the temperature ...

Embodiment 3

[0073] (1) Preparation of warm mixing agent

[0074] Using Fe metal as a catalyst, the CO obtained after coal gasification, and H 2 The synthesis reaction is carried out to obtain mixed alkanes with a carbon number of 70-90 alkanes accounting for 90%.

[0075] ① Weigh 1000g of the above mixed alkanes, about 0.8mol, put it in a closed container, heat it to 440℃, add 6g catalyst anhydrous NiCl 2 , Keep this temperature and introduce 0.31 mol of fluorine, and blow in nitrogen to keep the pressure of the reaction vessel at 4MPa, react for 45 minutes to obtain the intermediate;

[0076] ②Weigh 3500g of phenol refined extract oil with 78% aromatic content, and add 164g of complex [Ni(CO) 4 ] And 16.4g of catalyst Ni, packed in another airtight container and heated to 310°C, reacted at this temperature for 160min at a constant temperature, to obtain aromatic hydrocarbon complex components;

[0077] ③Introduce the aromatic complex component into the above intermediate, keep the temperature at ...

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Abstract

The invention discloses a warm mix polymer modified asphalt and a preparation method thereof, wherein the warm mix polymer modified asphalt comprises, by mass, 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 an elemental halogen at a certain temperature under a certain pressure to obtain an intermediate; carrying out a reaction on an aromatic hydrocarbon oil and a complexing compound under the effect of a catalyst to obtain an aromatic hydrocarbon complexing component; and carrying out a reaction on the aromatic hydrocarbon complexing component and the intermediate at a certain temperature, and aging to obtain the warm mix agent. According to the present invention, with the warm mix agent, 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 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] In the past, asphalt mixtures used in road engineering are 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 mixtures generally use emulsified asphalt or liquid asphalt and aggregates to be mixed and pave at room temperature without heating the aggregates and binders, 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 traffic roads. Hot mix asphalt mixture is widely used and has good road performance. However, in the production process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L23/06C08L23/12C08L27/06C08L67/02C08L91/00C08K5/02C08K3/06
CPCC08L95/00C08L2201/08C08L2205/03C08L2555/24C08L2555/80C08L2555/84C08L53/02C08L91/00C08K5/02C08K3/06C08L9/06C08L23/06C08L67/02Y02A30/30Y02P20/52
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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