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Graphene oxide modified asphalt and preparation method thereof

A graphene modification and graphene technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of limited improvement range and ineffective overall improvement of asphalt performance, so as to improve rutting resistance and high temperature performance Effect

Active Publication Date: 2014-05-28
浙江威克新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a graphene oxide modified asphalt, which solves the problem that the overall improvement effect of the polymer as a modifier is not obvious and the improvement range is limited

Method used

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  • Graphene oxide modified asphalt and preparation method thereof
  • Graphene oxide modified asphalt and preparation method thereof
  • Graphene oxide modified asphalt and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0031] The preparation method of above-mentioned graphene oxide modified asphalt specifically implements according to the following steps:

[0032] Step 1, weighing 0.5% to 15% of graphene oxide and 85% to 99.5% of matrix pitch respectively by mass percentage, the sum of the mass percentages of the above components is 100%;

[0033] Step 2: Heat the base asphalt to melt, keep the temperature at 120-200°C, add graphene oxide, stir manually for 20-40 minutes, stir with shears for 20-120 minutes, cool down to 100-150°C, and place for 20-50 minutes. make it fully swell;

[0034] In step 3, the asphalt mixture obtained in step 2 is sheared again on a shearing machine for 80 to 100 minutes until the graphene oxide is uniformly dispersed in the asphalt, and the graphene oxide modified asphalt is obtained.

[0035] Take base asphalt that is pure, free from weathering, free from harmful impurities, and has a good chip shape. In this experiment, Zhonghai 36-190# base asphalt was selec...

Embodiment 1

[0047] Take 94% of the base asphalt by mass and heat it to melt, keep the temperature at 180°C, add 5% graphene oxide according to the mass percentage, stir manually for 20 minutes, stir with a shear for 80 minutes, cool down to 150°C, and place it for 50 minutes to fully swell ; The mixture is sheared again on a shearing machine for 80 minutes until the graphene oxide is evenly dispersed in the asphalt.

[0048] The softening point test result of the graphene oxide modified pitch prepared in Example 1 was 73.4°C, and the penetration was 63.4 (0.1 mm).

Embodiment 2

[0050] Take 96% of the base asphalt and heat it to melt, keep the temperature at 180°C, add 4% graphene oxide according to the mass percentage, manually stir for 20 minutes, stir with shears for 80 minutes, cool down to 150°C, and let it stand for 50 minutes to fully swell ; The mixture is sheared again on a shearing machine for 80 minutes until the graphene oxide is evenly dispersed in the asphalt.

[0051] The softening point of the graphene oxide-modified asphalt prepared in Example 2 was tested to be 66.3°C, and the penetration was 76.8 (0.1 mm).

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Abstract

The invention provides graphene oxide modified asphalt, comprising, by mass, 0.5 to 15% of graphene oxide and 85 to 99.5% of matrix asphalt, wherein the above mentioned mass percent sums to 100%. A preparation method for the graphene oxide modified asphalt comprises the following steps: heating and fusing matrix asphalt, maintaining a temperature to be 120 to 200 DEG C, adding graphene oxide, carrying out artificial stirring for 20 to 40 min, then carrying out stirring with a shearing machine for 20 to 120 min, cooling an obtained mixture to 100 to 150 DEG C and standing the mixture for 20 to 50 min so as to allow the mixture to be fully swollen; and subjecting the asphalt mixture to shearing on the shearing machine again for 80 to 100 min until graphene oxide is uniformly dispersed in asphalt. The graphene oxide modified asphalt provided by the invention uses graphene oxide as a modifier for modification of asphalt, can substantially improve high temperature performance and anti-deformation capability of matrix asphalt and greatly improves anti-tracking capability of a bituminous pavement.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a graphene oxide modified asphalt, and also relates to a preparation method of the graphene oxide modified asphalt. Background technique [0002] Graphene oxide is a functionalized graphene obtained by oxidation of graphite. Studies have reported that graphene oxide has a lattice form similar to graphene. This is because the functional group only replaces a small part of the carbon atoms and does not destroy the overall structure. The crystalline unit cell of graphene, so graphene oxide still retains the crystalline properties of graphene, but there are some functional groups connected to the two-dimensional base surface. Graphene oxide is different from graphene in that there are still a large number of oxygen-containing functional groups on its surface, so graphene oxide has a strong ability to participate in chemical reactions. [0003] Asphalt is gener...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K9/00C08K3/04
Inventor 方长青于瑞恩程有亮周星
Owner 浙江威克新材料科技发展有限公司
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