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혼합유화제 비율에 따른 인계난연제 캡슐의 제조 및 특성 연구
백경현,이준영,홍상현,김중현 한국공업화학회 2004 응용화학 Vol.8 No.1
The microcapsules containing triphenyl phosphate (TPP) flame retardant have been prepared by using the epoxy resin (Novolac Type) with good physical properties and network structure. The reactants including TPP, epoxy resin and mixed surfactants were emulsified to oil in water (O/W) by the phase inversion technology and then conducted on the crosslinking of epoxy resin by In-situ polymerization. The capsule size and size distribution of TPP microcapsules was controlled by mixed surfactant ratio. The thermal property of TPP capsules were measured by the TGA. The morphology and capsule size were also investigated by the SEM respectively. TPP capsules with 1 : 1 of mixed surfactant (F127 : SDBS) ratio were more spherical and uniform than it with others. The TPP capsule size was 12~17㎛ and TGA results shows that TPP capsule efficiency was about 73%.
미니에멀젼 중합을 이용한 상전이 물질의 나노 캡슐화 및 열적특성 연구
김경래,백경현,신진섭,김중현 한국공업화학회 2004 응용화학 Vol.8 No.2
The nanocapsule containing phase change materials (PCM) such as octadecane were prepare by miniemulsion polymerization. The size, shape, and encapsulation efficiency of PCM nanocapsule was analyzed by scanning electron microscope (SEM), transmission electron microscope (TEM), hydrodynamic fractionation (CHDF), differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA). PCM nanocapsule size range from 50 to 100 ㎚, and its morphology was shapes. The maximum encapsulation efficiency of PCM materials were around 90%.