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Pn@MF@SiO2 Double‐Shelled Phase Change Microcapsules with High Latent Heat and Low Leakage Rate.
- Source :
- ChemistrySelect; 2/5/2024, Vol. 9 Issue 5, p1-12, 12p
- Publication Year :
- 2024
-
Abstract
- Microencapsulation of paraffin with melamine formaldehyde shell (Pn@MF) shows the drawbacks of low thermal conductivity. Hence, we constructed SiO2 shells on Pn@MF phase change microcapsules by interfacial polycondensation to obtain Pn@MF@SiO2 double‐shelled microcapsules. The effect of tetraethoxysilane (TEOS) contents on the performance of Pn@MF@SiO2 was discussed in detail. As the TEOS contents increased, the thermal conductivity of Pn@MF@SiO2 gradually increased, reaching up to 0.376 W m−1 K−1. The Pn@MF@SiO2 have exhibited superior leakage‐proof properties and thermal reliability through double‐shelled protection, and the highest reduction in leakage rate reached 45.06 % compared to Pn@MF microcapsules. The Pn@MF@SiO2‐3 with the lowest enthalpy still exhibit a latent heat storage capacity of more than 176 J/g, which displayed outstanding latent heat storage/release capability and good anti‐permeable property. [ABSTRACT FROM AUTHOR]
- Subjects :
- LATENT heat
HEAT storage
THERMAL conductivity
MELAMINE
HEAT capacity
LEAKAGE
Subjects
Details
- Language :
- English
- ISSN :
- 23656549
- Volume :
- 9
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- ChemistrySelect
- Publication Type :
- Academic Journal
- Accession number :
- 175642365
- Full Text :
- https://doi.org/10.1002/slct.202303322