FORMING SLURRY OF ENCAPSULATED PARRAFIN FOR HIGH-PRESSURE OPERATION

Abstract

A paraffin wax phase change material n-Octadecane used as an encapsulated capsule slurry of phase change material for encapsulation for temperature management applications. n-octadecane is encapsulated in DVB(divinylbenzene) and DVB-St copolymer with 70%to 30% of them in. The thermal properties were examined through differential scanning calorimetry (DSC). The melting point and latent heat of fusion of PCM was 20.84 °C and 240.60 J/g, while capsules showed a latent heat of 192.66 J/g with the same melting point. The formation of copolymer between DVB and St and their interaction with octadecane for the possibility of forming other copolymer is analyzed through, Fourier transform infrared spectrometry (FTIR). The spherical morphology of the capsules in slurry and core/shell structure was confirmed by the Field emission scanning electron microscope (FESEM)), respectively. Dynamic light scattering (DLS) analysis was used to verify and justify the sized capsules between 800nm and 30μm. From the application point of view, the Thermogravimetric analyzer (TGA) determined the thermal stability of the slurry. Synthesized slurry is used to manage the temperature in the system working under high-pressure condition such as PVT colling system as Heat transfer fluid.