• 제목/요약/키워드: binder paste

검색결과 179건 처리시간 0.026초

바인더 수지 종류에 따른 도전성 페이스트의 물성 분석 및 Ag flake 부피 분율에 따른 기계적 특성 시뮬레이션 연구 (Analysis of the Physical Properties of the Conductive Paste according to the Type of Binder Resin and Simulation of Mechanical Properties according to Ag Flake Volume Fraction)

  • 심지현;윤현성;유성훈;박종수;전성민;배진석
    • Composites Research
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    • 제35권2호
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    • pp.69-74
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    • 2022
  • 본 연구에서는 공정적 간편함으로 전자 패키징 분야의 배선 및 자동차 업계, 전자 제품 등 광범위한 범위에 사용되고 있는 도전성 페이스트를 다양한 공정조건으로 제조한 후, 열적, 기계적, 전기적 특성을 분석 및 기계적 특성에 대한 시뮬레이션 연구를 진행하여 최적의 도전성 페이스트 제조 공정 조건을 확립하고자 하였다. 우선 도전성 페이스트의 필수 구성 요소인 바인더 수지를 종류를 다양하게 설정하여 도전성 페이스트를 제조하였고, 열전도도, 인장강도 및 연신율 등의 특성을 분석하였다. 바인더 수지 중, 유연 에폭시 소재를 적용한 도전성 페이스트의 물성이 가장 우수하였으며, 도전성 페이스의 물성 data base를 토대로 하여 기계적 특성에 대한 시뮬레이션 연구를 진행하였다. 기계적 특성에 대한 시뮬레이션 결과, Ag flake 부피 분율이 60%일 때 가장 우수한 물성을 나타내었다.

과산화 티타늄 복합체를 이용한 염료감응형 태양전지용 페이스트의 제조 및 열처리 온도에 따른 특성 (The Preparation of Dye-Sensitized Solar Cell Paste Used the Peroxo Titanium Complex and Characteristics by Annealing Temperature)

  • 박현수;주소영;최준필;김우병
    • 한국분말재료학회지
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    • 제22권6호
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    • pp.396-402
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    • 2015
  • The organic binder-free paste for dye-sensitized solar cell (DSSC) has been investigated using peroxo titanium complex. The crystal structure of $TiO_2$ nanoparticles, morphology of $TiO_2$ film and electrical properties are analyzed by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Electrochemical Impedance Spectra (EIS), and solar simulator. The synthesized $TiO_2$ nanopowders by the peroxo titanium complex at 150, 300, $400^{\circ}C$, and $450^{\circ}C$ have anatase phase and average crystal sizes are calculated to be 4.2, 13.7, 16.9, and 20.9 nm, respectively. The DSSC prepared by the peroxo titanium complex binder have higher $V_{oc}$ and lower $J_{sc}$ values than that of the organic binder. It can be attributed to improvement of sintering properties of $TCO/TiO_2$ and $TiO_2/TiO_2$ interface and to formation of agglomerate by the nanoparticles. As a result, we have investigated the organic binder-free paste and 3.178% conversion efficiency of the DSSC at $450^{\circ}C$.

부타디엔 고무로 결합된 탄소반죽 바이오센서를 이용한 과산화수소의 전기화학적 정량 (Electrochemical determination of hydrogen peroxide using carbon paste biosensor bound with butadiene rubber)

  • 윤길중
    • 분석과학
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    • 제23권5호
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    • pp.505-510
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    • 2010
  • 톨루엔에 녹인 폴리부타디엔을 탄소가루의 결합재로 사용하였을 때, 탄소반죽은 전극 제작 후 용매 증발에 의하여 기계적 물성을 보였으며, 이 성질은 탄소반죽전극 실용화의 선행조건을 충족시키는 것이었다. 부타디엔 고무를 결합재로 사용하여 새로운 효소전극을 제작하고, 그것이 정량적인 전기화학적 행동을 보이는지 확인하기 위하여 여러 가지 전기화학 속도론적 파라메터 즉 대칭인자, 교환전류밀도, 이중층의 축전용량, 시간상수, 최대전류, Michaelis 상수 등을 구하였다. 이 결과들은 부타디엔 고무가 탄소반죽전극 실용화에 추천할 만한 위한 결합재임을 보여 주는 것이었다.

우레탄 필름에 인쇄된 신축 가능한 전극 패턴의 특성 (Properties of Stretchable Electrode Pattern Printed on Urethane Film)

  • 남수용;권보석;남현진;남기우;박효준
    • 동력기계공학회지
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    • 제22권1호
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    • pp.64-71
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    • 2018
  • Currently, functional patterns are formed by screen printing on stretchable films, and they are applied to wearable and stretchable devices. In this study, three types of silver paste were prepared using three polyester binders with different Tg and molecular weights in order to impart elasticity to the conductive pattern itself. Rheological properties and DSC measurements were performed for each silver paste. Then, each silver paste was screen printing and cured by an IR dryer to evaluate adhesive strength, pencil hardness, resistance and surface shape change according to strain. As a result, it was found that the silver paste using a binder with a low Tg and a high molecular weight has the smallest resistance change depending on the strain. Namely, it was found that it is most preferable to use a binder with a low Tg and a high molecular weight as the stretchable electrode.

코디어라이트 허니컴 압출용 혼합체의 점성거동에 관한 연구 (A Study on Rheological Behavior of Cordierite Honeycomb Extrusion Paste)

  • 송용익;김형태;이진구;윤원중;류성수
    • 한국분말재료학회지
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    • 제17권1호
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    • pp.44-51
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    • 2010
  • The rheological behavior of a cordierite honeycomb extrusion paste was investigated by measuring torque values in a Brabender plastograph. The extrusion pastes were formulated using binder (methy cellulose, MC), solvent (water), plasticizer (ploy ethylene glycol, PEG) and lubricants (oleic acid, OA). The mixing sequence and optimum organic binder, at least for homogeneous mixed state, can be determined from the rheological point of view. 3%MC-30%$H_2O$-1.5%PEG-1.0%OA with respect to the cordierite powder was chosen as a binder composition for the extrusion process of cordierite powder.

Solid Contents 에 따른 Ag Paste 의 특성 변화 (Characterization of Ag Pastes with solid contents variation)

  • 조현민;유명재;이우성;양형국;박종철
    • 한국마이크로전자및패키징학회:학술대회논문집
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    • 한국마이크로전자및패키징학회 2002년도 추계기술심포지움논문집
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    • pp.169-172
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    • 2002
  • Silver pastes for inner conductor in the Low Temperature Co-fired Ceramics (LTCC) are composed of silver powder, binder, solvent and additives. The composition of the chemicals have influence on rheology, printability, shrinkage rate, etc. In this study, commercial Ag pastes and Ag pastes made in KETI were investigated to find the relationship between characteristics of Ag paste and solid contents. Ag pastes with 68~90 wt% Solid Contents were tested. Substrate/paste matching property and conductivity of the conductor lines showed large dependence on solid contents of Ag paste.

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Field Emission properties of photosensitive carbon nanotube paste with different inorganic binders

  • Park, Jae-Hong;Moon, Jin-San;Jeong, Jin-Soo;Yoo, Ji-Beom;Park, Chong-Yun;Nam, Joong- Woo;Park, Jong-Hwan;Choe, Deok-Hyeon
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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    • pp.1451-1454
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    • 2005
  • We report effects of inorganic binder on the emission properties of CNT paste for low cost and high low-cost and large area field emission devices or displays. Two types of photosensitive carbon nanotube (CNT) paste were formulated by using of glass frit and spin on glass (SOG) as an inorganic binder and investigated their emission properties according to inorganic binders and firing conditions.

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A mortar mix proportion design algorithm based on artificial neural networks

  • Ji, Tao;Lin, Xu Jian
    • Computers and Concrete
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    • 제3권5호
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    • pp.357-373
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    • 2006
  • The concepts of four parameters of nominal water-cement ratio, equivalent water-cement ratio, average paste thickness, fly ash-binder ratio were introduced. It was verified that the four parameters and the mix proportion of mortar can be transformed each other. The behaviors (strength, workability, et al.) of mortar primarily determined by the mix proportion of mortar now depend on the four parameters. The prediction models of strength and workability of mortar were built based on artificial neural networks (ANNs). The calculation models of average paste thickness and equivalent water-cement ratio of mortar can be obtained by the reversal deduction of the two prediction models, respectively. A mortar mix proportion design algorithm was proposed. The proposed mortar mix proportion design algorithm is expected to reduce the number of trial and error, save cost, laborers and time.

Rheological Properties of Binder Pastes for Self-Compacting Concrete

  • Park, Yon-Dong
    • KCI Concrete Journal
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    • 제13권1호
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    • pp.35-41
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    • 2001
  • This paper investigated rheological properties of binder pastes for self-compacting high performance concrete. Six mixtures of self-compacting concrete were initially prepared and tested to estimate self-compacting property. Then, the binder pastes used in self-compacting concrete were tested for rheological properties using a rotary type rheometer. Binder pastes with different water-binder ratios arid flow values were also examined to evaluate their rheological characteristics. The binders were composed of ordinary Portland cement, fly ash, two types of pulverized blast-furnace slag, and limestone powder. The flow curves of binder pastes were obtained by a rotary type rheometer with shear rate control. Slump flow, O-funnel time, box, and L-flow teats were carried out to estimate self-compacting property of concrete. The flow curves of binder pastes for self-compacting concrete had negligible yield stresses and showed an approximately linear behavior at higher shear rates beyond a certain limit. Test results also indicated that the binders incorporating fly ash are more appropriate than the other types of binders in quality control of self-compacting concrete.

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폴리머 시멘트 페이스트의 특성에 미치는 도포방법의 영향 (Effect of Coating Method on Properties of Polymer-Modified Paste)

  • 주명기;이윤수;김윤환;한정현
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2005년도 추계 학술발표회 제17권2호
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    • pp.803-806
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    • 2005
  • The effect of coating method and binder content on the tensile adhesion strength, water absorption and cl- penetration depth of polymer-modified pastes using redispersible polymer powders and ceramic powder are examined. As a result, the tensile adhesion strength of the polymer-modified pastes tend to increase with increasing binder content and: number of coating. The water absorption and cl- penetration depth of the polymer-modified pastes tend to decrease with increasing binder content and number of coating.

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