Graphene material for asphalt modification and preparation method and application

A technology of asphalt modification and graphene, applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of complex modification process and unfavorable industrial application.

Active Publication Date: 2021-01-05
GUANGXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are some problems in these methods. The modification process is relatively complicated, which is not conducive to industrial application.

Method used

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  • Graphene material for asphalt modification and preparation method and application
  • Graphene material for asphalt modification and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation steps of the graphene material used for asphalt modification are as follows:

[0030] (1) Carrying out high-temperature oxidation of three-dimensional structure graphene at 320° C. in a tube furnace for 2 hours to obtain partially oxidized three-dimensional structure graphene;

[0031] (2) Weigh respectively isopropyl triisostearyl titanate, isopropanol and the above-mentioned partially oxidized three-dimensional graphene by the following parts by weight;

[0032] Partially oxidized three-dimensional graphene 5 parts

[0033] 0.5 parts of isopropyl triisostearyl titanate

[0034] 94.5 parts of isopropanol

[0035] (3) According to the amount of each component weighed in step (2), stir and mix isopropanol and isopropyl triisostearyl titanate for 5 minutes, and add the above-mentioned partially oxidized Stereostructured graphene, stirred at high speed for 1 hour, and dried in a blast oven at 95°C for 2 hours to obtain graphene materials for asphalt modi...

Embodiment 2

[0038] The preparation steps of the graphene material used for asphalt modification are as follows:

[0039] (1) Oxidize the graphene microchips with concentrated sulfuric acid for 1 hour and filter and wash with water and dry to obtain partially oxidized graphene microchips;

[0040] (2) Take gamma-mercaptopropylmethyldiethoxysilane, dehydrated alcohol and the above-mentioned partially oxidized graphene microchips by weighing respectively by the following parts by weight;

[0041] Partially oxidized graphene microflakes 8 parts

[0042] 0.16 parts of γ-mercaptopropylmethyldiethoxysilane

[0043] 91.84 parts of absolute ethanol

[0044] (3) According to the amount of each component weighed in step (2), stir and mix the absolute ethanol and γ-mercaptopropylmethyldiethoxysilane for 4 minutes, and add the above-mentioned part after the dispersion is uniform. The oxidized graphene microsheets were stirred at a high speed for 1.5 hours, and dried by a rotary evaporator to obtain...

Embodiment 3

[0047] The preparation steps of the graphene material used for asphalt modification are as follows:

[0048] (1) The three-dimensional structure graphene is oxidized by concentrated nitric acid for 30 minutes and then filtered and washed with water and dried to obtain partially oxidized three-dimensional structure graphene;

[0049] (2) take cetyltrimethoxysilane, butanol and the above-mentioned partially oxidized three-dimensional graphene respectively by the following parts by weight;

[0050] Partially oxidized three-dimensional graphene 12 parts

[0051] Hexadecyltrimethoxysilane 0.36 parts

[0052] Butanol 87.64 parts

[0053] (3) According to the amount of each component weighed in step (2), butanol and hexadecyltrimethoxysilane were stirred and mixed for 4 minutes, and after the dispersion was uniform, the above-mentioned partially oxidized three-dimensional graphite was added therein. Graphene, stirred at high speed for 2 hours, butanol was discarded by filtration a...

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Abstract

Disclosed is a graphene material for asphalt modification as well as a preparation method and application. The graphene material for the asphalt modification comprises partially oxidized graphene powder and a surface grafting modifier. The partially oxidized graphene powder is connected to an inorganic affinity group in the surface grafting modifier by means of an oxygen-containing functional group on the partially oxidized graphene powder. The oxygen content in the partially oxidized graphene powder is 0.05%-15%. Also disclosed is the application of the graphene material for the asphalt modification or the preparation method of the graphene material in matrix asphalt and modified asphalt.

Description

technical field [0001] The invention relates to the field of asphalt modification, in particular to a graphene material used for asphalt modification, its preparation method and application. Background technique [0002] Asphalt pavement is widely used all over the world. At present, more than 95% of the roads in the world are asphalt pavement. The development of asphalt pavement is very rapid. As a hydrophobic material, asphalt is also widely used in the field of building waterproofing. Asphalt is a complex mixture of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a high-viscosity organic liquid whose main structure is aromatic structure and saturated alkanes. It can be used as a waterproof, moisture-proof and anti-corrosion organic gelling material. However, asphalt is a polymer material, with poor temperature stability, easy to soften in summer and easy to crack in winter; poor water resistance, prone to water damage; poor aging resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K9/06C08K9/00C08K3/04C08L95/00
CPCC08K9/00C08K9/04C08K9/06C08L2201/08C08K3/042C08L95/00
Inventor 田植群梁立喆沈培康翁晓娜归立发李卫庆
Owner GUANGXI UNIV
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