Abstract:
PURPOSE: A thin film solar cell is provided to improve the absorbent rate of an optical absorbent layer using an optical trapping effect which re-transfers reflected light into the inside using a refractive index. CONSTITUTION: A material(21) is deposited on the upper side of a glass substrate on which a transparent electrode(17) is deposited. The refractive index of the material is lower than that of a glass(16). Light is absorbed in an optical absorbent layer(18) and is reflected by a rear side electrode(20) and a rear side reflector(19). The reflected light is re-transmitted to the inside of a solar cell using the refractive index of the light.
Abstract:
A process for the preparation of a hydrophilicized membrane is provided to prepare a membrane such as a semi-permanently hydrophilicized ultrafiltration membrane or microfiltration membrane by impregnating the membrane with a non-volatile water-soluble polyvalent alcohol such that the non-volatile water-soluble polyvalent alcohol is deposited onto the membrane surface after modifying a surface of a membrane using an atmospheric pressure plasma generator in the membrane preparation step. In a process for the preparation of a membrane such as a ultrafiltration membrane or a microfiltration membrane, a process for the preparation of a hydrophilicized membrane comprises the steps of: (1) applying a dope solution comprising a polymer, an organic solvent, and an additive onto a surface of a nonwoven fabric, forming pores in the surface of the dope solution-applied nonwoven fabric by the phase inversion process, and drying the pore-formed nonwoven fabric to prepare a membrane; (2) subjecting the membrane to an atmospheric pressure plasma treatment to modify a surface of the membrane; and (3) impregnating the membrane surface with an aqueous non-volatile polyvalent alcohol solution such that the aqueous non-volatile polyvalent alcohol solution is deposited onto the membrane surface to hydrophilicize the membrane. The atmospheric pressure plasma treatment is performed at a power frequency of 10 to 100 kHz, an application voltage of 1 to 100 kV, and a distance between electrodes and the membrane of 1 to 10 mm. The membrane hydrophilicizing step is performed at a concentration of the aqueous non-volatile polyvalent alcohol solution of 1 to 10% and a temperature of 30 to 90 deg.C.
Abstract:
A method for preparing aromatic polyamides is provided to attain flame retardancy improvement, shrinkage reduction, and an increase in mechanical strength of the aromatic polyamides due to a layered clay mineral evenly exfoliated in the aromatic polyamides. A method for preparing aromatic polyamides includes the steps of: (i) dispersing a layered clay mineral in an amine-based polymerization solvent used for the polymerization of aromatic polyamides; (ii) dissolving an aromatic diamine in the dispersion of the step (i) kept at low temperature; (iii) thereto adding aromatic dicarbonyl chloride to prepare aromatic polyamide oligomers containing the layered material; and (iv) re-dissolving the prepared aromatic polyamide oligomers in a solvent to perform a second polymerization.
Abstract:
A submerged flat membrane module for water treatment which reduces the resistance in a flow path, enables membranes to be manufactured easily, and reduces the manufacturing cost of the membranes is provided. A submerged flat membrane module for water treatment comprises a supporting body(1), and flat membranes(2) laminated on both sides of the supporting body, wherein the supporting body is formed as a mat structured knitted fabric between two sheets of the flat membranes in a way that a plurality of filament yarns support the sheets vertically. The supporting body has a thickness of 1 to 10 mm. The mat structured knitted fabric is formed from polyvinyl-based synthetic fibers, polyamide-based synthetic fibers, or polyester-based synthetic fibers.
Abstract:
Provided is a polymer electrolyte containing an ionic liquid, which has a uniform pore distribution, contains a large amount of an organic electrolyte and an ionic liquid, and shows excellent ion conductivity and electrochemical stability. The polymer electrolyte containing an ionic liquid comprises a polymer film obtained by spin-coating a mixed solution containing a polymer and a solvent via a phase transition process, wherein the polymer film is impregnated with an organic electrolyte comprising an ionic liquid and a lithium salt. The polymer film is obtained by using a mixed solution comprising 10-40 wt% of the polymer and 60-90 wt% of the solvent. The organic electrolyte contains at least one carbonate solvent. The ionic liquid includes 1-butyl-3-methylimidazolium tetrafluoroborate.
Abstract:
Provided are a positive electrode composition of a conductive polymer material containing a S-S bond, and a lithium secondary battery using the composition which is increased in the capacity maintenance characteristics according to the number of charge/discharge and is remarkably improved in electrical conductivity and electrochemical properties. The positive electrode composition comprises a copolymer of a polydithiodianiline repeating unit represented by the formula 1 and an N-aryl amine derivative, wherein X is H, Li, Na or K; Z is F, Cl, Br, I, ClO4, PF6, BF4, CF3SO3, HSO4 or C12H25C6H4SO3; k, k1' and k2' represent a molar ratio and are 0.01-0.5, respectively; m represents a molar ratio and is 0.05-0.95; and n represents a repeating unit and is 2-10,000. The monomer of an N-aryl amine derivative is introduced into the dithiodianiline derivative by chemical polymerization or electropolymerization.
Abstract translation:本发明提供一种含有SS键的导电性高分子材料的正极组合物和使用该组合物的锂二次电池,其根据充放电次数而提高容量维持特性,并且电导率和电化学特性显着提高 。 该正极组合物包含由式1表示的聚二硫代二苯胺重复单元和N-芳基胺衍生物的共聚物,其中X是H,Li,Na或K; Z是F,Cl,Br,I,ClO 4,PF 6,BF 4,CF 3 SO 3,HSO 4或C 12 H 25 C 6 H 4 SO 3; k,k1'和k2'分别代表摩尔比并且分别为0.01-0.5; m表示摩尔比并且为0.05-0.95; 并且n代表重复单元并且是2-10,000。 通过化学聚合或电聚合将N-芳基胺衍生物的单体引入二硫代二苯胺衍生物中。
Abstract:
본 발명은 탄소 나노튜브 섬유의 제조방법 및 그 방법에 의해 제조된 섬유에 관한 것으로, 보다 상세하게는 폴리비닐알콜 10 내지30 중량%, 디메틸 설폭사이드(Dimethyl Sulfoxide, DMSO) 70 내지 90 중량%, 폴리비닐알콜에 대하여 탄소 나노튜브0.1 내지 60 중량%, 탄소 나노튜브에 대하여 계면 활성제인 리튬 도데실 설페이트(Lithium Dodecyl Sulfate, LDS) 또는 소듐 라우릴 설페이트(Sodium Laulyl Sulfate, SLS) 0.1 내지 5 중량%를 사용하여 디메틸 설폭사이드에 탄소 나노튜브와 소듐 라우릴 설페이트를 40℃ 내지 80℃ 에서 초음파를 사용하여 1 내지 3 시간 혼합한 후, 폴리비닐알콜 고형분을 넣고 60℃ 내지 100℃에서 초음파와 교반기를 이용하여 1 내지 3 시간 혼합한 혼합용액을 제조한 후, 이를 습식방사용 탱크에서 응고욕으로 방사하여 섬유형성 후, 건조와 후연신을 하는 단계를 포함하는 탄소 나노튜브 섬유의 제조방법에 관한 것이다. 본 발명에 의하면, 기계적물성 및 전자파 차폐효율이 우수한 탄소 나노튜브 섬유를 제조할 수 있다. 폴리비닐알콜, 탄소 나노튜브, 기계적물성, 전자파차폐
Abstract:
본 발명은 네 변부에 발광체가 구성되며, 이들 발광체에 연결되는 광섬유들이 직교하는 구조로 형성됨으로써 균일하면서 고휘도로 면발광을 구현한 액정표시장치용 플라스틱 광섬유를 이용한 백라이트 유니트를 개시한다. 본 발명은, 액정패널의 네 변부에 각각 대응되게 배치되는 발광체들; 및 상기 액정패널에 대응되는 영역에 직물 구조로 짜여져서 각 변부의 상기 발광체로부터 방출되는 빛을 코어를 따라 진행시키고, 상기 구조 중 교차점에서 점발광이 이루어지며, 변부에 측면 발광을 위한 다수의 스크래치가 형성된 광섬유를 구비한다. 그리고, 광섬유는 상기 직물 구조로써 평직(平織 , plain weave) 구조로 짜여진다. 따라서, 백라이트 유니트는 광섬유의 교차점의 점발광과 스크래치를 이용한 빛의 확산을 동시에 이용함으로써 고휘도로 면발광이 구현될 수 있고, 디스플레이 소자의 발열량이 줄어들고 소비 전력이 절감될 수 있는 효과가 있으며, 대화면 디스플레이 소자에 적용가능한 효과가 있다.
Abstract:
본 발명은 불소 치환 폴리아릴렌에테르 화합물, 그 제조방법 및 이를 이용한 광도파로형 광소자에 관한 것으로, 하기 일반식 1로 표시되는 불소 치환 폴리아릴렌에테르 화합물을 제공한다. 본 발명에 따른 불소 치환 폴리아릴렌에테르 화합물은 광손실과 복굴절률을 현저히 줄일 수 있을 뿐만 아니라, 우수한 기계적 특성과 내열성 및 내화학성을 가짐으로써, 열안정성이 뛰어난 광도파로형 광소자를 제조할 수 있다.