Road phase-change temperature regulator and preparation method thereof

Abstract

The invention provides a road phase-change temperature regulator. The road phase-change temperature regulator is prepared from a phase change material, white carbon black, ethyl cellulose, a plasticizer and an organic solvent. The invention further provides a preparation method of the road phase-change temperature regulator. The preparation method of the road phase-change temperature regulator comprises the following steps: 1, uniformly stirring the plasticizer and the organic solvent to obtain a mixed solution; 2, adding the ethyl cellulose into the mixture to obtain a glue solution; 3, making the phase change material and the white carbon black into a moulded phase change material; and 4, uniformly stirring the moulded phase change material and the glue solution, and heating and drying to obtain the road phase-change temperature regulator. The road phase-change temperature regulator is wide in raw material source, simple in process and low in production cost and can be produced in batches on a construction site directly; and the road phase-change temperature regulator has a micro-scale capsule structure, can perform phase change along with change of the ambient temperature and store or release energy, can effectively regulate the surface temperature of a road and improve the capability of the road in responding to the change of the ambient l temperature.

Description

technical field [0001] The invention belongs to the technical field of phase-change energy storage materials, and in particular relates to a phase-change temperature-regulating agent for roads and a preparation method thereof. Background technique [0002] With the vigorous development of social economy, people's awareness of traffic safety is increasing day by day, and the quality of road performance has attracted more and more attention. However, there are various diseases on the pavement of existing roads in our country, which have seriously affected the performance of the road: asphalt pavement becomes soft when heated, prone to high-temperature rutting, and hardens when cold, prone to low-temperature cracking; cement concrete pavement thermal expansion and cold Shrinkage is prone to cracks on the road surface; in addition, the freeze-thaw cycle of water makes the road surface prone to damage such as potholes, deformation, and mud pumping. These diseases are all closely...

AI Technical Summary

Problems solved by technology

[0007] To apply phase change materials in the road industry, the above three methods mainly have the following problems: (1) The impregnation method requires that phase change materials and road substrates must have good compatibility, such stringent requirements directly lead to The application of phase change materials has been greatly limited; (2) The pavement of the road is a porous interconnected structure, and the use environment is complex, including solar radiation, freeze-thaw cycle, atmospheric precipitation, groundwater, traffic load and many other environmental factors. The direct incorporation method It not only reduces the performance of the road substrate, but also the mixed phase change material cannot play its temperature regulation function stably and permanently; (3) The existing composite phase change material with microcapsule structure cannot meet the requirements of its compatibility with the road substrate. The main reason is that the microcapsule structure encapsulating the phase change material will be destroyed at a mixing temperature of 160°C to 180°C, resulting in a large loss of phase change material and failing to achieve the effect of energy storage and temperature regulation

In addition, in the prior art, the preparation process of compounding phase-change materials into a microcapsule structure is complicated, the preparation conditions are harsh, and the production cost is high. It is not suitable for mass production at the construction site and cannot meet the requirements of road construction.

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