Abstract:
The present invention provides a multi-layer coating film which comprises: a polyester based film; urethane acrylate coating layers which are coated on at least one surface of the polyester based film and include urethane acrylate resin compositions which contain organic clay; fluoropolymer coating layers which are coated on the urethane acrylate coating layers, and which include Vinylidenefluoride (VDF). The urethane acrylate coating layer including the organic clay gives high barrier properties for water vapor and oxygen, and the fluoropolymer coating layer gives weather resistance. A back sheet for solar battery of the present invention has superior gas barrier property and weather resistance than traditional back sheets. Also, the back sheet for solar battery manufactured by a coating method of the present invention shortens manufacturing steps by not requiring to form an adhesive layer on a base material in advance and reduces costs for fluoropolymer raw material by controlling the thickness of the fluoropolymer coating layer as thin as possible.
Abstract:
PURPOSE: A fluorine-based polymer composition for the back sheet of a solar cell module is provided to have excellent adhesion to a substrate and to reduce manufacturing process of the back sheet by not forming a separate adhesive layer on a substrate in advance. CONSTITUTION: A fluorine-based polymer composition includes a fluorine polymer and an adhesive polymer binder resin. The fluorine polymer is a vinylidene fluoride homopolymer, a vinylidene fluoride copolymer, or a combination thereof. The adhesive polymer binder resin includes a polyamic acid. A manufacturing method of a back sheet for a solar cell module includes a step of adding a solvent into the composition and mixing the same; a step of coating one or both sides of a substrate which is polyethylene terephthalate, polyethylene naphthalate, or a combination thereof, with the mixture; and a step of heating the coated substrate. [Reference numerals] (AA,CC) Fluorine-based polymer composition coating layer; (BB) Polyethylene terephthalate substrate
Abstract:
태양전지 모듈의 백시트는 일반적으로 수증기와 산소 차단성이 우수한 폴리에스테르 기재 필름을 내후성 불소고분자 라미네이트 필름으로 양면에서 감싸는 형태의 구조로 되어 있으며, 불소고분자 라미네이트 필름은 주로 폴리비닐 플루오라이드(PVF) 필름을 사용하고 있다. 세계시장에서 기존의 PVF 필름 보다 내후성을 나타내면서 저렴한 불소고분자 코팅 소재에 대한 요구가 매우 커짐에 따라, 본 발명은 종래 PVF 필름을 대체할 수 있는 새로운 내후성 불소고분자 코팅 재료를 제공 한다. 본 발명은 태양전지 모듈의 백시트의 내후성 코팅 재료로 사용하는 코어-쉘 구조의 불소고분자 입자를 제공한다. 특히, 본 발명의 코어-쉘 구조의 불소고분자 입자는 쉘측에 소량의 퍼플루오로알킬기를 함유한다. 보다 구체적으로, (a) 불소 중합체로 이루어진 코어 및 (b) 하기 화학식 1의 플루오로비닐에테르 공단량체를 사용하여 퍼플루오로알킬기를 도입한 쉘을 포함하는 코어-쉘 불소고분자를 제공한다. [화학식 1] CF 2 =CFOCF 2 CF 2 R f (상기 화학식 1에서, R f 는 C 1 ~C 3 의 퍼플루오로알킬 또는 퍼플루오로알콕시기이다.)
Abstract:
PURPOSE: A UV curable fluorinated copolymer is provided to be used as a UV-curable transparent coating agent and to be suitable for processing a surface of various components requiring transparency, low refractivity and staining resistance. CONSTITUTION: A UV curable fluorinated copolymer is formed by copolymerizing one or more kinds of perfluorinated polyether-modified compounds represented by chemical formula 1: CF3CF2CF2-O-CF(CF3)-X-Y-X-CZ=CH2, CF3CF2CF2-O-CF(CF3)-Y-X-CZ=CH2 and one or more kinds of benzophenone-based acrylate monomers represented by chemical formula 2. In chemical formula 1, x is ester, urethane, ether or amide linker, Y is a C0-5 alkyl group, and Z is hydrogen, chlorine, fluorine or C1-5 alkyl group. [Reference numerals] (AA) Transparency(%); (BB) Wavelength(nm); (CC) Example 2
Abstract:
The present invention relates to a suspension polymerization method of a methacrylic resin using an alkali-soluble polymer emulsion as a dispersion stabilizer, and the method is excellent for polymerization stability, reduces the amount of scale produced in a reactor and suppresses the production of fine particles as much as possible, thereby enabling yield and productivity. In addition, the present invention provides a suspension polymerization method which is economical and convenient since all the alkali-soluble emulsion polymers used as a dispersion stabilizer are collected from an aqueous medium, thereby facilitating reuse of the used solvent.
Abstract:
본 발명은 알칼리 수용성 고분자 에멀젼과 고분자 라텍스 입자가 포함된 조성물을 이용하여 각종 디스플레이 표면과 광학 소재의 표면에 요구되는 반사방지막을 제조하는 방법에 관한 것이다. 본 발명의 조성물을 사용하면, 기재의 제한이 없고, 경제적이며, 생산 속도가 빠르며, 환경적인 측면에서도 유해성 없이 저굴절율의 다공성 반사방지막을 형성하는 것이 가능하다. 또한 단일층 반사방지막 뿐만 아니라 고굴절율층 위에 동일한 방법으로 코팅할 수 있어 2층 구조의 반사방지막 제조에도 적용할 수 있다.
Abstract:
PURPOSE: A super contamination-resistive surface using core-shell type inorganic-fluoropolymer composite nanoparticle is provided to form super water-repellent, super oil-repellent, and super contamination-resistive surface by forming composite concave-convexes on the surface of a substrate according to the self-assembly of the composite nanoparticle. CONSTITUTION: A core is formed based on azo-based chlorosilane compound fixed inorganic particles. A shell is formed based on one or more fluorine polymer selected from compounds represented by chemical formula 1 to 7. A core-shell type composite nanoparticle is obtained. The composite nanoparticle is coated on the surface of a polymer resin. The coated polymer resin is hardened.