In this paper, a kind of microcapsule containing phase change material of n-octadecane was successfully
synthesized based on in situ polymerization where trimethylol melamine and hexamethylol melamine
were shell materials. We used different emulsification time, reaction time and different treatment to
improve the quality of the microcapsules. The microcapsule and coated fabric were characterized by
the optical microscope, Scanning Electronic Microscope (SEM), laser diameter distribution machine and
Differential Scanning Calorimeter (DSC). The optical microscope and SEM pictures showed that this
microcapsule has good surface configuration. Particle size with laser diameter distribution machine
displayed that grains of the microcapsule were distributed evenly. The DSC results revealed the phase-
changing temperature and enthalpy of the microcapsule.
