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Modified carbon black, modified asphalt and preparation method of modified carbon black and modified asphalt

A technology of modified carbon black and modified asphalt, which is applied in chemical instruments and methods, building components, fibrous fillers, etc. The performance of photoaging, the low cost, the effect of improving the anti-aging ability

Inactive Publication Date: 2016-05-04
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, the application of modified carbon black at home and abroad is mainly concentrated on pigments, colorants, etc., and the research on the application of asphalt modification is basically blank.

Method used

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  • Modified carbon black, modified asphalt and preparation method of modified carbon black and modified asphalt
  • Modified carbon black, modified asphalt and preparation method of modified carbon black and modified asphalt
  • Modified carbon black, modified asphalt and preparation method of modified carbon black and modified asphalt

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Effect test

Embodiment 1

[0032] A modified carbon black that can be used as an asphalt additive is prepared from waste rubber through anaerobic high-temperature pyrolysis, washed with detergent, oxidized with an oxidant and activated with a surfactant. The preparation method of this modified carbon black is specifically as follows:

[0033] Using waste rubber as raw material, it is pyrolyzed at 510°C under anaerobic conditions, and then granulated to form microspherical carbon black with a diameter of 30nm. Pressure filtration, remove its organic impurity, in the Erlenmeyer flask that connects spherical condensing pipe, add the product that 50g washes and handle and concentration is the nitric acid 500ml of 68%, by magnetic stirrer, the mixture is stirred at 90 ℃ temperature for 2h, After cooling to room temperature, filter, wash the filtrate repeatedly with deionized water until neutral, dry it in a constant temperature drying oven at 100°C, and put it in a desiccator for constant weight;

[0034] A...

Embodiment 2

[0047] A modified carbon black that can be used as an asphalt additive is prepared from waste rubber through anaerobic high-temperature pyrolysis, washed with detergent, oxidized with an oxidant and activated with a surfactant. The preparation method of this modified carbon black is specifically as follows:

[0048] Using waste rubber as raw material, it is pyrolyzed at 510°C under anaerobic conditions, and then granulated to form microspherical carbon black with a diameter of 50nm. Pressure filtration to remove organic impurities. In the Erlenmeyer flask connected to the spherical condenser, add 50g of washed carbon black and 500ml of concentrated nitric acid with a concentration of 60%, stir the mixture at 70°C for 3h by a magnetic stirrer, and filter after cooling to room temperature. The filtrate was repeatedly washed with deionized water to neutrality, dried in a constant temperature drying oven at 100°C, and placed in a desiccator for constant weight.

[0049] Add 5g o...

Embodiment 3

[0061] A modified carbon black that can be used as an asphalt additive is prepared from waste rubber through anaerobic high-temperature pyrolysis, washed with detergent, oxidized with an oxidant and activated with a surfactant. The preparation method of this modified carbon black is specifically as follows:

[0062] Using waste rubber as raw material, it is pyrolyzed at 510°C under anaerobic conditions, and then granulated to form microspherical carbon black with a diameter of 40nm. Pressure filtration to remove organic impurities. In the Erlenmeyer flask connected with spherical condenser, add 50g of treated carbon black and 500ml of nitric acid with a concentration of 65%, stir it at 80°C for 3h with a magnetic stirrer, filter it after cooling to room temperature, and use it repeatedly The filtrate was washed with deionized water until neutral, dried in a constant temperature drying oven at 100°C, and placed in a desiccator for constant weight.

[0063] Add 5g of carbon bl...

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Abstract

The invention provides modified carbon black capable of being taken as an asphalt additive. The modified carbon black is prepared by performing anaerobic high-temperature pyrolysis on waste rubber, washing with a washing agent, oxidizing with an oxidizing agent and activating with a surface active agent in sequence. The invention further provides a preparation method and application of the modified carbon black. The modified carbon black provided by the invention is much higher in aging resistance than that of ordinary carbon black, good in dispersity and difficult to aggregate; therefore, compared with the ordinary carbon black, the modified carbon black can more efficiently improve the thermal-oxidative aging and ultraviolet aging resistance of the asphalt.

Description

technical field [0001] The invention relates to a modified carbon black, a modified asphalt and a preparation method of the modified carbon black and the modified asphalt. Background technique [0002] Asphalt aging is an important factor affecting the quality and performance of asphalt pavement. Asphalt aging usually refers to a series of physical and chemical processes that occur during storage, transportation, mixing of mixtures, paving, rolling and long-term use of asphalt. change, resulting in a process that degrades its performance. The main aging methods of asphalt are ultraviolet aging and thermo-oxidative aging. During the long-term use of asphalt pavement, when the asphalt is in contact with the air, it will slowly oxidize, and the formed polar oxygen-containing groups will gradually link into high molecular weight micelles, which will increase the viscosity of the asphalt and reduce the ductility. Therefore, asphalt pavement is prone to aging under sunlight and ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L35/06C08L39/06C08K9/04C08K9/02C08K3/04C09C1/56C09C3/08C09C3/06C09C3/00
CPCC08K3/04C08K9/02C08K9/04C08L95/00C09C1/565C09C3/003C09C3/006C09C3/06C09C3/08C08L2201/08C08K2201/003C08K2201/011
Inventor 冯振刚珠力克李新军卞慧娟栗培龙饶文宇陈冲
Owner CHANGAN UNIV
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