Abstract:
PURPOSE: A polyarylene-based polymer is provided to have high hydrogen ion conductivity, to have excellent chemical stability and dimensional stability, and to especially manufacture a fuel cell with excellent long term durability. CONSTITUTION: A polyarylene-based polymer comprises a repeating unit indicated in chemical formula 1. In chemical formula 1, each of R^1-R^4 is independently -H, -SO3R, -PO(OH)2, -F, -CN, a C1~20 alkyl group, C1~20 alkoxy group, C6~18 aryl group, or C1~20 acyl group, where R of -SO3R is hydrogen, a C1-20 alkyl group, C1-20 alkoxy group, C6-18 aryl group or C1-20 acyl group, each of k is independently an integer from 1-5, n is an integer from 1-99. The weight average molecular weight of the polyarylene-based polymer is 10,000-1,000,000.
Abstract:
PURPOSE: A polymer electrolyte membrane for fuel cell is provided to have the low permeability of fuel gas, the high conductivity of hydrogen ion, the excellent durability of a membrane, and excellent membrane-electrode interface stability thereby obtaining long time stability of membrane-electrode assembly. CONSTITUTION: A polymer electrolyte membrane for fuel cell comprises: a poly(arylene ether) copolymer in the chemical formula 1; and a polymer consisting of one or more kind of monomers selected from the group consisting of vinylidene fluoride, trifluoroethylene, tetrafluoroethylene and hexafluoropropylene. The poly(arylene ether) copolymer is a random copolymer or a block copolymer.
Abstract:
PURPOSE: A polymer electrolyte membrane for a fuel cell is provided to ensure high dimensional stability even if the polymer electrolyte membrane is exposed for a long time and excellent membrane/electrode interface stability. CONSTITUTION: A polymer electrolyte membrane for a fuel cell comprises (a) a poly(aryleneether) copolymer of chemical formula 1 and (b) a polymer including at least one selected from the group consisting of vinylidene fluoride, trifluoroethylene, tetrafluoroethylene, and hexafluoropropylene. The average molecular weight of the poly(aryleneether) copolymer is 10,000-1,000,000.
Abstract:
본 발명은 자동차 내장재용 폴리프로필렌 수지 조성물에 관한 것으로, 더욱 상세하게는 결정성 폴리프로필렌, 스티렌-무수 말레인산, 스티렌계 공중합체 고무, 에틸렌-α- 올레핀 공중합체 고무 및 무기 충진재를 적정 함량으로 첨가함으로써, 면 충격성이 우수하여 자동차 충돌 규격을 만족 시키고, 프라이머 도포등의 표면 개질 도장 전처리 공정을 전혀 사용하지 않고도 도장 부착력이 우수하여 인스트루먼트 판넬, 도어트림 판넬용 등에 적용할 수 있는 자동차 내장재용 폴리프로필렌 수지 조성물에 관한 것이다. 폴리프로필렌, 도장 전처리, 면충격성
Abstract:
네트워크에서스트림의통신경로설정방법이개시된다. 통신경로의설정방법은통신경로의설정을요청하는제1 프레임을수신하는단계, 제1 프레임의스트림 ID와동일한스트림 ID를가지는제2 프레임이수신되지않은경우에제1 프레임에포함된정보를기초로제1 통신노드의테이블을설정하는단계, 제1 프레임의홉 카운트를증가시키는단계, 및증가된홉 카운트를포함하는제1 프레임을전송하는단계를포함한다. 따라서, 차량네트워크의성능이향상될수 있다.
Abstract:
PURPOSE: A poly(arylene ether) copolymer having an sulfonic acid group is provided to enable ion channel formation in the formation of a polymer film and to widen a hydrophobic part, thereby securing dimensional stability against moisture. CONSTITUTION: A method for preparing a poly(arylene ether) copolymer having an sulfonic acid group represented by chemical formula 3 comprises the steps of: (i) copolymerizing 2,2'-bis(2-hydroxy-5-biphenylyl)propane, at least one monomer selected from the group consisting of chemical formula 4b, and at least one kind of a monomer selected from the group consisting of chemical formula 5b; and (ii) introducing a sulfonic acid group to copolymerized polymer.
Abstract:
네트워크에서스트림의통신경로설정방법이개시된다. 통신경로의설정방법은통신경로의설정을요청하는제1 프레임을수신하는단계, 제1 프레임의스트림 ID와동일한스트림 ID를가지는제2 프레임이수신되지않은경우에제1 프레임에포함된정보를기초로제1 통신노드의테이블을설정하는단계, 제1 프레임의홉 카운트를증가시키는단계, 및증가된홉 카운트를포함하는제1 프레임을전송하는단계를포함한다. 따라서, 차량네트워크의성능이향상될수 있다.