Abstract:
PURPOSE: A manufacturing method and microcapsules manufactured thereby are provided to improve thermal stability, solvent resistance, chemical stability, and workability, and to diversity kinds of a dispersing agent by using the microcapsules as the dispersing agent. CONSTITUTION: A manufacturing method of polyurea microcapsule comprises the following steps; manufacturing a dispersed solution by decentralizing particles into saturated alcohol; dissolving amine-based monomer in the dispersed solution; making emulsion by mixing the dispersed solution, vegetable oil and diesel oil(30); and manufacturing the microcapsule which has the dispersed solution as a core material by dissolving a nonpolar isocyanate compound into the emulsion. The particle is conductive powder, metal particles, metalorganic particles, metal oxide particles, magnetic particles and hydrophobic polymer particles.
Abstract:
본 발명은 포화알코올 분산매를 포함하는 폴리우레아 마이크로 캡슐의 제조 방법 및 이에 의해 제조된 마이크로캡슐에 관한 것으로, 이 방법에 의하면, 미립자를 포화알코올 분산매에 분산시킨 분산액을 심물질로 하는 마이크로캡슐을 제조한다. 이를 디스플레이 분야에 적용하면, 응답특성을 보다 다양하게 하여, 다양하고 세밀한 색상 발현을 구현할 수 있다. 또한 본 발명의 마이크로캡슐은 폴리우레아를 벽물질(Wall material)로 사용해서, 열안정성, 내용매성, 및 화학적 안정성이 뛰어나며, 보다 가공성이 우수하다. 포화알코올, 계면중합, 마이크로캡슐, 폴리우레아
Abstract:
PURPOSE: A manufacturing method of microcapsules, microcapsules manufactured thereby, and electronic paper having a fast response time are provided to make an electronic paper having a quick response time. CONSTITUTION: A manufacturing method of microcapsules(10) comprises the following steps: manufacturing a dispersed solution by dispersing a pigment microparticle, which is charged, into a dispersing medium including liquid crystal; forming an emulsion by emulsifying the dispersed solution into an aqueous solution; and manufacturing the microcapsules by mixing wall formation material with the emulsion. The dispersing medium further includes dielectric oil. A dispersing stabilizer is a non-ionic surfactant or a polymer material.
Abstract:
PURPOSE: A transmissivity-changeable film including electroheological fluid microcapsules and a manufacturing method thereof are provided to include the electroheological fluid microcapsules, thereby being applied to a flat plate glass, a flexible plastic transparent electrode or a transparent glass electrode surface with a bent part through the improvement of workability. CONSTITUTION: A transmissivity-changeable film(100) comprises the first transparent electrode(10), the second transparent electrode(20), and a plurality of electroheological fluid microcapsules(40). A plurality of electroheological fluid microcapsules is interposed between the first transparent electrode and the second transparent electrode. A polymer partition film(42) provides a sealed space. Insulating fluid(46) is included in the sealed space. Polarizing particles(44) are included in the insulating fluid. When a voltage is applied to the first transparent electrode and the second transparent electrode, the polarizing particles are arranged in a row.