Road asphalt modifier and modified road asphalt and its preparation method and asphalt mixture
A technology of road asphalt and modifier, which is applied in the direction of building insulation materials, building components, buildings, etc. It can solve the problems of poor stability of asphalt pavement and poor low-temperature ductility of modified road asphalt, so as to reduce costs and solve high value-added utilization and the effect of exploiting the problem at scale
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[0032] Although the road asphalt modifier obtained by mixing the above components evenly can have better performance than the prior art, but preferably, according to the second aspect of the present invention, a road asphalt modification provided by the present invention is provided A method for preparing an agent, the method comprising: (1) heating a raw material containing coal direct liquefaction residue in the presence of an oxidizing agent, the heating temperature is 180-350°C, and the heating time is 5-90min; (2) petroleum heavy Stirring the oil and the polymer at 30-200°C; (3) mixing the modified coal direct liquefaction residue obtained in step (1) with the mixture obtained in step (2), stirring evenly and then cooling to obtain a road asphalt modifier.
[0033] With respect to 100 parts by weight of the coal direct liquefaction residue, the content of heavy petroleum oil is 30-150 parts by weight, preferably, the content of heavy petroleum oil is 40-145 parts by weight...
Embodiment 1
[0058] This embodiment is used to illustrate the road asphalt modifier and modified road asphalt provided by the present invention and the preparation method thereof.
[0059] Road asphalt modifier:
[0060] 1) After mixing 100 parts by weight of the direct coal liquefaction residue and 5 parts by weight of zinc oxide, heating at 200° C. for 70 minutes in the presence of air, and then cooling to obtain the modified coal direct liquefaction residue;
[0061] 2) 90 parts by weight of catalytic cracking oil slurry (produced by Yanshan Petrochemical, ρ 20℃ =0.985g / ml, the content greater than 350°C distillation range is 76% by weight, the freezing point is 10.2°C, and the kinematic viscosity at 100°C is 14.78mm 2 ·s -1 ) and 20 parts by weight of SBR (SBR1712, produced by Fujian Petrochemical) were stirred and mixed for 2 hours at 60 ° C and 50 rpm to obtain a mixture;
[0062] 3) The above-mentioned modified coal direct liquefaction residue is pulverized, and contacted with th...
Embodiment 2
[0068] This embodiment is used to illustrate the road asphalt modifier and modified road asphalt provided by the present invention and the preparation method thereof.
[0069] Road asphalt modifier:
[0070] 1) After mixing 100 parts by weight of the direct coal liquefaction residue and 5 parts by weight of zinc stearate, heating at 180° C. for 90 minutes in the presence of oxygen, and then cooling to obtain the modified coal direct liquefaction residue;
[0071] 2) 50 parts by weight of catalytic cracking oil slurry (produced by Yanshan Petrochemical, ρ 20℃ =0.985g / ml, the content greater than 350°C distillation range is 76% by weight, the freezing point is 10.2°C, and the kinematic viscosity at 100°C is 14.78mm 2 ·s -1 ) and 20 parts by weight of SBR (SBR1712 produced by Fujian Petrochemical) were stirred and mixed for 3 hours at 50 ° C and 800 rpm to obtain a mixture;
[0072] 3) The above-mentioned modified coal direct liquefaction residue is pulverized, and contacted w...
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Abstract
Description
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