The water repellant silica microcapsules and a method for their preparation

The present invention relates to silica microcapsules having water repellency and a preparation method thereof, and more specifically, to microcapsules capable of manufacturing solid microcapsule walls by growing additional silica on external wall of silica microcapsule. The microcapsules of a core-...

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Bibliographische Detailangaben
Hauptverfasser:	LIM, MYUNG KWAN, LIM, HEE SEOB, CHOI, DONG UK, KIM, YOUNG HO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ADHESIVES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY DYES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to silica microcapsules having water repellency and a preparation method thereof, and more specifically, to microcapsules capable of manufacturing solid microcapsule walls by growing additional silica on external wall of silica microcapsule. The microcapsules of a core-shell structured according to the present invention have significantly improved water repellency by having more solid external wall of the silica shell. In addition, since thanks to the improved water repellency of microcapsules, the microcapsules with firm additional silica can be applied as an insulation material for cold storage, and a cold storage material for lightweight concrete of inner walls of food warehouses. 본 발명은 발수성을 갖는 실리카계 마이크로캡슐 및 이의 제조방법에 관한 것으로, 보다 상세하게는 실리카 마이크로캡슐 벽재에 추가로 실리카를 성장시켜 마이크로캡슐 벽재를 더욱 견고하게 만들 수 있는 마이크로캡슐 및 이의 제조방법에 관한 것이다. 본 발명에 따른 코어-쉘 구조의 마이크로캡슐은 실리카 쉘의 벽재가 견고하게 형성되어 현저히 향상된 발수성을 갖는다. 또한, 상기 실리카 쉘의 벽재가 견고하게 형성된 마이크로캡슐을 발수성이 현저히 뛰어나므로, 냉장용 단열재 및 식품물류창고 내벽재 경량 콘크리트 등의 축냉제로 응용될 수 있다.