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Phase-change temperature-regulating asphalt and preparation method thereof

A kind of asphalt and phase change technology, which is applied in building insulation materials, building components, buildings, etc., can solve the problems of poor anti-slip and crack resistance, improve low-temperature performance, delay the cooling rate, shorten the occurrence and duration of Effect

Inactive Publication Date: 2021-04-09
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a phase-change temperature-regulating asphalt and its preparation method, which solves the defects of poor anti-skid and crack resistance existing in asphalt mixtures in low-temperature environments in the prior art

Method used

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  • Phase-change temperature-regulating asphalt and preparation method thereof
  • Phase-change temperature-regulating asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Preparation of phase-change temperature-adjusted asphalt with a dosage of 4%: heat the asphalt in an oven at 140°C, pour it into an aluminum pot and weigh the mass when the asphalt becomes liquid, put the aluminum pot into the heating jacket, and The temperature measuring probe matched with the heating jacket extends into the asphalt to ensure the temperature control of the asphalt during the shearing process. According to the bitumen quality that weighs, convert the quality of required tetradecane-n-octanoic acid phase-change microcapsules, then slowly add the tetradecane-n-octanoic acid phase-change microcapsules into the bitumen in stages, during which The glass rod was manually stirred slowly until the tetradecane-n-octanoic acid phase change microcapsules were submerged in the asphalt, and the phase change temperature regulating asphalt was prepared.

[0048] Insert the rotor of the high-speed shearing machine into the asphalt, adjust the height of the rod connecti...

Embodiment 2

[0050] Preparation of phase-change temperature-adjusted asphalt with a dosage of 7%: heat the asphalt in an oven at 140°C, pour it into an aluminum pot when the asphalt becomes liquid and weigh it, put the aluminum pot into the heating jacket, and The temperature measuring probe matched with the heating jacket extends into the asphalt to ensure the temperature control of the asphalt during the shearing process. According to the bitumen quality that weighs, convert the quality of required tetradecane-n-octanoic acid phase-change microcapsules, then slowly add the tetradecane-n-octanoic acid phase-change microcapsules into the bitumen in stages, during which Slowly stir manually with a glass rod until the tetradecane-n-octanoic acid phase change microcapsules are submerged in the asphalt.

[0051] Insert the rotor of the high-speed shearing machine into the asphalt, adjust the height of the rod connecting the rotor so that the distance between the rotor and the bottom of the pot...

Embodiment 3

[0053] Preparation of phase-change temperature-adjusted asphalt with a dosage of 10%: heat the asphalt in an oven at 140°C, pour it into an aluminum pot and weigh the mass when the asphalt becomes liquid and flowy, put the aluminum pot into the heating jacket, and The temperature measuring probe matched with the heating jacket extends into the asphalt to ensure the temperature control of the asphalt during the shearing process. According to the bitumen quality that weighs, convert the quality of required tetradecane-n-octanoic acid phase-change microcapsules, then slowly add the tetradecane-n-octanoic acid phase-change microcapsules into the bitumen in stages, during which Slowly stir manually with a glass rod until the tetradecane-n-octanoic acid phase change microcapsules are submerged in the asphalt.

[0054] Insert the rotor of the high-speed shearing machine into the asphalt, adjust the height of the rod connecting the rotor so that the distance between the rotor and the ...

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Abstract

The invention provides phase-change temperature-regulating asphalt and a preparation method thereof.The phase-change temperature-regulating asphalt is prepared from, by mass, (50-51) parts of tetradecane, (49-51) parts of n-caprylic acid, (15-22.5) parts of melamine, (45-67.5) parts of formaldehyde, (0.2-0.5) parts of polyvinyl alcohol, (0.5-1) parts of TiO2 nanoparticles, (0.2-0.5) parts of SDS and 93 parts of asphalt; the phase-change microcapsules are prepared from tetradecane and n-caprylic acid, and the phase-change material is changed from a liquid state to a solid state in a low-temperature environment and releases heat, so that the cooling rate of asphalt can be reduced to a certain extent, the aim of delaying or shortening the appearance and duration of extremely low temperature is fulfilled, and the low-temperature performance of the asphalt binder is improved.

Description

technical field [0001] The invention relates to the field of asphalt preparation, in particular to a phase-change temperature-regulating asphalt and a preparation method thereof. Background technique [0002] Low-temperature weather often occurs in winter, and under such climate conditions all year round, asphalt mixture needs to have good road performance to ensure daily use. Due to the low temperature in such areas, when encountering rainy and snowy weather, it is easy to cause the road surface to freeze. According to the data, the adhesion coefficient between the soft snow road and the tire is between 0.20 and 0.40, the adhesion coefficient between the compacted snow road and the vehicle tire is between 0.15 and 0.50, and the adhesion coefficient of the icy road is only 1 / 8 of that of the dry road. 1 / 4. Low temperature will also reduce the skid resistance and crack resistance of asphalt mixture, seriously affecting the use of roads and the safety of people's lives and p...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K9/10C08K5/09C08K5/01
CPCC08K9/10C08K5/09C08K5/01C08L95/00
Inventor 马峰刘健董文豪傅珍金彦鑫温雅噜李思琪袁康博郭兴隆刘松然史柯王钰洁
Owner CHANGAN UNIV
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