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Pavement material with wide phase change temperature zone and preparation method thereof

A technology of pavement materials and shape-setting phase change materials, which is applied in the field of pavement materials and its preparation in a wide phase change temperature range, can solve the problems of large influence of seasons and weather changes, poor durability, and temperature changes, so as to delay the peak occurrence time, Effect of improving durability and prolonging life

Inactive Publication Date: 2017-12-15
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current phase change heat storage pavement still has problems such as poor adaptability to temperature changes, great influence on seasons and weather changes, poor durability, easy cracking, and short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The phase change material carrier mesoporous silica SBA-15 is commercially available.

[0015] Example 1

[0016] Separately add 0.1g of tetradecane, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, polyethylene glycol (molecular weight 2000) into 100ml of absolute ethanol and heat and stir to prepare 1g / L tetradecane, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, polyethylene glycol (molecular weight 2000) ethanol solution, and then add 45mg SBA-15 separately In the above-mentioned phase change material core material solution, the mixture was stirred at 65°C for 4h, and then dried at 80°C for 24h, to obtain the shaped phase change material tetradecane / SBA-15, pentadecane / SBA-15, ten Hexane / SBA-15, heptadecane / SBA-15, octadecane / SBA-15, nonadecane / SBA-15, eicosane / SBA-15, polyethylene glycol / SBA-15.

[0017] Take 1g each of the above-mentioned wide phase change temperature zone composite shaped phase change materials at differ...

Embodiment 2

[0019] Add 0.08g of phase change material core material tetradecane, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, polyethylene glycol (molecular weight 2000) into 100ml absolute ethanol Medium heating and stirring, prepare 1g / L tetradecane, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, polyethylene glycol (molecular weight 2000) ethanol solution, and then mix 45mg SBA-15 was added to the above-mentioned phase change material core material solution, and the mixture was stirred at 65°C for 4 hours, and then dried at 80°C for 24 hours to obtain the shaped phase change material tetradecane / SBA-15 and pentadecane / SBA-15, hexadecane / SBA-15, heptadecane / SBA-15, octadecane / SBA-15, nonadecane / SBA-15, eicosane / SBA-15, polyethylene glycol / SBA -15.

[0020] Combine the above-mentioned wide phase change temperature zone with different temperatures and composite shape-stable phase change materials tetradecane / SBA-15 1g, pentadecane / SBA-151...

Embodiment 3

[0022] Add 0.06g phase change material core material tetradecane, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, polyethylene glycol (molecular weight 2000) into 100ml absolute ethanol Medium heating and stirring, prepare 1g / L tetradecane, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane, polyethylene glycol (molecular weight 2000) ethanol solution, and then mix 45mg SBA-15 was added to the above-mentioned phase change material core material solution, and the mixture was stirred at 65°C for 4 hours, and then dried at 80°C for 24 hours to obtain the shaped phase change material tetradecane / SBA-15 and pentadecane / SBA-15, hexadecane / SBA-15, heptadecane / SBA-15, octadecane / SBA-15, nonadecane / SBA-15, eicosane / SBA-15, polyethylene glycol / SBA -15.

[0023] Take 1g of each of the above-mentioned shaped phase change materials and mix them thoroughly to prepare a composite shaped phase-change material with a wide phase change temperature rang...

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Abstract

The invention discloses a pavement material with a wide phase change temperature zone and a preparation method thereof. The pavement material comprises a shape-stabilized phase change material and asphalt, wherein a mass ratio of the shape-stabilized phase change material to the asphalt is 1:(5-20); the shape-stabilized phase change material is prepared by mixing tetradecane / carrier, pentadecane / carrier, hexadecane / carrier, heptadecane / carrier, octodecane / carrier, nonadecane / carrier, eicosane / carrier and polyethylene glycol / carrier; and a mass ratio is 1:1:(1-3):(1-3):(1-3):(1-3):1:1. The shape-stabilized phase change material of different phase change temperatures is doped into the asphalt, so that the asphalt concrete pavement temperature is regulated, the adaptability on the outside temperature change is enhanced, the temperature rise rate inside large-volume asphalt concrete is effectively reduced, time-to-peak force is delayed, the influence of freezing-thawing cycle and extremely high or low temperature on the concrete pavement performance is reduced, thermal cracks occurring in the asphalt concrete can be prevented, the durability of the material is improved, and the service life is prolonged.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a pavement material with a wide phase change temperature zone and a preparation method thereof. Background technique [0002] Phase change heat storage pavement materials can store or release heat energy through the phase change process when the ambient temperature changes sharply, so that the pavement can maintain a reasonable temperature for a long time, so as to achieve low temperature to reduce road condensation, high temperature to reduce thermal stability diseases, and active improvement Pavement disease caused by temperature. Incorporating phase change materials into asphalt can prepare phase change heat storage asphalt pavement materials with self-regulating effect. In summer, it can effectively reduce the temperature of asphalt pavement and reduce its heating rate, shorten the time of high-temperature operation on the road, and help relieve Urban heat i...

Claims

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Application Information

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IPC IPC(8): C04B24/36
CPCC04B40/0039C04B2103/0071C04B24/36C04B24/00C04B14/06C04B20/002C04B24/28
Inventor 高军凯陈妍施骞吕梦娇
Owner ZHEJIANG OCEAN UNIV
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