The n-octadecane@melamine-urea-formaldehyde resin microencapsulated phase change materials were synthesized using melamine-urea-formaldehyde resin (MUF) as the capsule shell and n-octadecane as the core material through in-situ polymerization approach.The effects of emulsifiers,such as Span80,Tween80,and SDS on the morphology,structure,and thermal properties of the microcapsules,were investigated.The experimental results revealed that the choice of emulsifier type and its concentration significantly influenced the morphology of the microencapsulated phase change materials.In particular,the co-use of nonionic and anionic emulsifiers led to an enhancement in the dispersion of microcapsules,resulting in improved uniformity in particle size distribution and heightened heat storage capacity of the microencapsulated phase change materials.Notably,When the latent heat storage efficiency of the microencapsulated phase change materials reached 54%,the enthalpies of melting and crystallization of the microencapsulated phase change materials were 134.2J/g and 109 J/g,respectively.
Xiang Jialin, Li Meng, Xie Zonghong, Wang Jie, Wang Zhiyu
. Preparation and characterization of n-octadecane@melamine-urea- formaldehyde resin microencapsulated phase change materials[J]. New Chemical Materials, 2024
, 52(11)
: 115
-119
.
DOI: 10.19817/j.cnki.issn1006-3536.2024.11.003
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