Abstract:
The present invention relates to a method for producing a poly(vinyl alcohol)/ethylene acrylic acid composite resin including nanoparticles and the poly(vinyl alcohol)/ethylene acrylic acid composite resin produced therefrom and, more specifically, to a method for producing a poly(vinyl alcohol)/ethylene acrylic acid composite resin including nanoparticles and the poly(vinyl alcohol)/ethylene acrylic acid composite resin produced therefrom, wherein the composite resin is produced by dispersing an ethylene acrylic acid resin in a poly(vinyl alcohol) resin and dispersing nanoparticles in the ethylene acrylic acid resin dispersed poly(vinyl alcohol) resin to have blocking properties against oxygen and moisture, thereby preventing the properties of the poly(vinyl alcohol) resin from changing influenced by the external environment, and especially improving blocking properties against moisture, that is a disadvantage of the poly(vinyl alcohol) resin. Accordingly, the resin can be widely applied in various fields.
Abstract:
본 발명은 태양광 발전용 모듈을 제작할 때 사용하는 EVA 시트용 조성물에 관한 것으로써, 더욱 상세하게는 태양광 발전용 모듈의 상부 EVA 시트에 자외선을 가시광선으로 변위시키는 화합물을 나노 실리카에 코팅하여 사용함으로써, 자외선(290~380nm) 영역의 빛을 흡수한 뒤, 가시광선(380~780nm)영역의 빛으로 변환시켜 태양광의 발전효율을 높일 수 있고 자외선으로부터 시트의 내구성을 높일 수 있으며, 이로 인해 자외선 10%, 가시광선 45%, 적외선 45%로 구성된 태양광이 태양광 모듈의 상부 EVA 시트를 투과하는 과정에서 불필요한 자외선 영역의 빛을 가시광선 영역의 빛으로 변환시킴으로써 태양광 발전용 모듈의 발전효율을 높일 수 있도록 하는 광변위 기능을 갖는 태양광발전 모듈용 EVA 시트 조성물에 관한 것이다.
Abstract:
PURPOSE: A water soluble perylene compound which is able to block and convert a light wavelength is provided to block rays which are unnecessary for photosynthesis and to help the growth of plants by converting a green wavelength into an effective wavelength, thereby improving productivity. CONSTITUTION: A water soluble perylene compound which is able to block and convert a light wavelength is denoted by a chemical formula 1 or 4. The water soluble perylene compound is dissolved in a polar solvent selected among water, dichloromethane, methanol, chloroform, and acetonitrile. A method for preparing the compound of chemical formula 1 comprises the steps of: substituting with an aromatic compound of chemical formula 3 in N,N'-di(2,6-diisopropylphenyl)-1,7-dibromoperylene-3,4,9,10-tetracarboxdiimide of chemical formula 2 to prepare a perylene compound of chemical formula 4; and introducing an electrolyte of chemical formula 5 to the intermediate of chemical formula 4.