Graphene material for asphalt modification and preparation method and application

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...

Examples

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...

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...

Examples

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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