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J Microencapsul. 2018 Nov - Dec;35(7-8):635-642. doi: 10.1080/02652048.2018.1559248. Epub 2019 Feb 20.

Low-temperature organic phase change material microcapsules for asphalt pavement: preparation, characterisation and application.

Author information

1
a School of Transportation Science and Engineering , Beihang University , Beijing , P. R. China.
2
b College of Transportation Engineering Key Laboratory of Road and Traffic Engineering of Ministry of Education , Tongji University , Shanghai , P. R. China.
3
c School of Materials Science and Engineering Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education , Tongji University , Shanghai , P. R. China.

Abstract

Low-temperature phase change material (PCM) is a material that stores additional heat at elevated temperatures and releases energy when the temperature is below the limit. A way to solve the low-temperature disaster of asphalt pavement is desired to be developed. In this article, a two-component organic low-temperature PCM was encapsulated by melamine-urea-formaldehyde resin and finally reinforced with polypropylene. The reinforced PCM microcapsules were mixed with 70# SBS (Styrene-Butadiene-Styrene) modified asphalt in SMA-10 (Stone Matrix Asphalt-10) to form aggregates. The results showed that after adding 6.0% (w/w) reinforced PCM microcapsules, there was a significant delay compared to a blank sample with a maximum temperature difference of 1.8 °C when the temperature dropped to 0 °C, which proved that this method has a good potential in resisting low-temperature disasters on asphalt pavement and deserves further improvement.

KEYWORDS:

Organic phase change material; asphalt pavement; low-temperature disaster; microcapsule; polypropylene

PMID:
30592243
DOI:
10.1080/02652048.2018.1559248
[Indexed for MEDLINE]

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