Abstract:
PURPOSE: A coating composition is provided to be used for manufacturing a poly(arylene ether sulfone)-based reverse osmosis membrane having a cross-linked structure and to obtain high durability and excellent salt rejection coefficient compared with a conventional polyamide-based reverse osmosis membrane. CONSTITUTION: A coating composition used for manufacturing a reverse osmosis membrane comprises: 20-50 weight% of poly(arylene ether sulfone) copolymers; 0.5-5 weight% of an epoxy resin; and an organic solvent. A method for manufacturing the reverse osmosis membrane for seawater desalting comprises: a step(S110) of manufacturing the coating composition including the poly(arylene ether sulfone) copolymers; a step(S120) of forming a mixed solution by dispersing inorganic particles on the coating composition; a step(S130) of spreading the mixed solution on the surface of a material to be coated; a step(S140) of forming a membrane by drying the mixed solution; and a step(S150) of crosslinking the inorganic particles and the poly(arylene ether sulfone) copolymers within the dried membrane.
Abstract:
고유량 및 고내구성을 이룰 수 있는 가교 구조를 갖는 폴리에테르술폰계열 해수담수화용 역삼투막을 제조하기 위한 코팅액 조성물 및 이를 이용한 해수담수화용 역삼투막 제조 방법에 대하여 개시한다. 본 발명에 따른 해수담수화용 역삼투막 제조 방법은 (a)폴리에테르술폰계열 공중합체를 포함하는 코팅액 조성물을 제조하는 단계; (b)무기입자를 상기 코팅액 조성물에 분산시켜 혼합용액을 형성하는 단계; (c)상기 혼합용액을 피코팅물 표면에 도포하는 단계; (d)상기 도포된 혼합용액을 건조하여 막을 형성하는 단계; 및 (e)상기 건조된 막 내의 폴리에테르술폰계열 공중합체 사슬과 무기입자를 가교 반응시키는 단계를 포함하여 이루어진다.
Abstract:
PURPOSE: A chlorine resistance polyamide-based reverse osmosis membrane containing surface reformed silica for a desalinating process and a manufacturing method of the same are provided to increase the concentration of amine groups. CONSTITUTION: A manufacturing method of a chlorine resistance polyamide-based reverse osmosis membrane containing surface reformed silica for a desalinating process includes the following steps: silica particles are dispersed in a solvent; an organosilane compound is added into the silica particle dispersed solution to generate silica of which surface is combined with the reactive group of the organosilane compound. Diaminobenzoic acid and 4-(4,6-dimethoxy-1,3,5-triazine-2-yl)-4-methylmorpolynium chloride catalyst are added to silica with the reactive group of the organosilane compound. Reformed silica is generated, and polyamide reactive groups are arranged on the surface of the silica. [Reference numerals] (AA) Polyamide activating layer; (BB) Polysulfone UF supporting layer; (CC) Polysulfone UF supporting layer; (DD) SiO_2 inorganic nanoparticles
Abstract:
본 발명은 해수담수화용 폴리에테르술폰계 역삼투막 제조용 코팅액 조성물 및 이를 이용한 폴리에테르술폰계 역삼투막의 제조방법에 관한 것으로, 해수를 여과해 담수로 만드는 공정에 사용되는 역삼투막의 활성층을 개발하여, 현재 사용되는 폴리아미드 막을 대체 및 보완하기 위한 새로운 활성층 소재 개발에 관한 것으로, 더욱 상세하게는 박막코팅에 의한 폴리에테르술폰계 역삼투막, 특히, 종래의 폴리아미드 막에 비해 고유량, 고내구성의 특성을 얻을 수 있도록 친수성인 아민기와 술폰산기를 함유하는 폴리에테르술폰계 공중합체를 포함하는 해수담수화용 역삼투막을 제조하고, 이를 PET 부직포와 같은 다공성 지지체에 코팅한 후, 과잉의 용액을 제거하고, 건조 및 열처리를 통하여 제조되는 해수담수화용 폴리에테르술폰계 역삼투막 제조용 � �팅액 조성물 및 이를 이용한 폴리에테르술폰계 역삼투막의 제조방법 관한 것이다.
Abstract:
PURPOSE: A method for fabricating a polymer electrolyte composite membrane is provided to improve thermal and mechanical properties of a fuel cell and to obtain stability to a high temperature and low humidity by improving particle dispersion stability within the electrolyte composite membrane and preventing phase separation through a crosslinking bond between inorganic particles and a polymer chain. CONSTITUTION: A method for manufacturing a polymer electrolyte composite membrane comprises the following steps: preparing hydrophilic inorganic nanoparticles; synthesizing a poly(arylene ether sulfone)-based copolymer; forming a polymer solution by dissolving the poly(arylene ether sulfone)-based copolymer in an organic solvent; manufacturing a mixed solution by dispersing the inorganic nanoparticles on the polymer solution; spreading the mixed solution on a glass substrate and performing a drying process; and cross-linking the inorganic nanoparticles and the poly(arylene ether sulfone)-based copolymer within the dried mixed solution.
Abstract:
A polymer electrolyte composite membrane is provided to secure stable and high battery capacity in a condition of high temperature and low humidity by using multi-component composite inorganic particles. A method for manufacturing a polymer electrolyte composite membrane comprises the steps of: mixing ammonium carbonate((NH4)2CO3) in zirconyl chloride(ZrOCl2-8H2O) solution to form zirconyl carbonate(ZrOCO3); mixing surfactants with zirconyl carbonate and adding sodium silicate(Na2SiO3) solution gradually to form multi-component composite inorganic particles; preparing a first polymer solution, an then evaporating the first polymer solution under reduced pressure to form a second polymer solution; mixing the inorganic particles in the second polymer solution to form inorganic particles-dispersed polymer solution; casting the inorganic particles-dispersed polymer solution and drying the cast polymer solution for 20-30 hours; and heat-treating the dried polymer solution at 120-200 °C for 30-90 minutes.
Abstract:
PURPOSE: A coating liquid composition is provided to have excellent flow, high durability, and chemical resistance, and to have excellent salt-exclusion by having charges on the surface of a membrane. CONSTITUTION: A coating liquid composition comprises a polyethersulfone-based copolymer and polyfunctional amine. The polyethersulfone-based copolymer is obtained by the condensation polymerization of an amine group-containing monomer and an ether sulfone-based monomer. The weight ratio of the amine group-containing monomer and ether sulfone-based monomer is 10-40:60-90. The amine group-containing monomer is selected from bis(3-amino-4-hydroxyphenyl)sulfone, 3,3`-diaminodiphenylsulfone, and m- aminophenol. The ether sulfone-based monomer selected from bisphenol, bisphenol-A, hydroquinone, and dichlorodiphenylsulfone. [Reference numerals] (a) Polyethersulfone support layer SEM image; (AA) Interfacial polymerization; (b) Surface SEM image; (BB) Active layer; (c) Cross-section SEM image; (CC) Support layer
Abstract:
PURPOSE: A high flux polyether sulfone-based nano composite membrane and a method for manufacturing the same are provided to implement a manufacturing process by interface-polymerizing polyether sulfone copolymer with carboxylic group, a multifunctional acylhalide, and nano particles. CONSTITUTION: A fine porous support(10) is immersed in an aqueous solution containing the mixture of polyether sulfone copolymer with carboxylic group, aromatic diamine, and tertiary amine. An excessive remained solution is eliminated. The support without the remained solution is immersed in an organic solution containing multifunctional acylhalide and nano particles in order to implement an interface-polymerizing process. The interface-polymerized support is thermally processed.
Abstract:
본 발명에 따른 고분자 전해질 복합막은 베이스 고분자; 상기 베이스 고분자에 분산되며, 서로 다른 기능을 가지며 화학적으로 결합된 다성분계 복합 무기입자를 포함한다. 따라서 본 발명에 따른 고분자 전해질 복합막은 베이스 고분자에 다성분계 복합 무기입자를 첨가하여 고분자 전해질 복합막을 제조함으로서 막의 열적, 기계적 안정성을 향상시킬 수 있다. 또한, 본 발명에 따른 고분자 전해질 복합막은 개별 무기입자를 사용한 복합막에 비하여 화학적으로 결합된 다성분계 복합 무기입자를 사용함으로서 각 무기입자의 상승효과를 통하여 고온, 저가습 조건에서도 안정적이고 높은 전지성능을 확보할 수 있다.