• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2008년도 춘계 학술발표회 제20권1호
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• pp.953-956
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• 2008

본 연구에서는 불포화폴리에스터 수지(U.P.)를 이용한 투수성 폴리머 콘크리트를 제조하여 투수성 및 강도 특성을 실험적으로 규명하였다. 그 결과 투수성 폴리머 콘크리트의 공극률 및 투수계수는 폴리머 결합재량의 증가에 따라 감소하는 경향을 나타내었다. 또한 투수성 폴리머 콘크리트의 압축강도는 폴리머 결합재량의 증가에 따라 감소하는 경향을 나타내었다. 투수성 폴리머 콘크리트의 압축강도는 투수계수가 증가함에 따라 감소하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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• pp.232-233
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• 2017

The purpose of this study is to evaluate the Adhesion in tension of cement mortar according to adding admixtures such as polymer dispersions, blast-furnace slag and fly ash. From the test results, the adhesion in tension is seriously affected by type of polymer compared with polymer-binder ratios and types of admixture. The maximum adhesion in tension of EVA- modified mortar is about 1.46 times, the cement mortar. It is apparent that the adhesion in tension of polymer-modified mortars according to adding two admixtures is much more improved irrespective of polymer-binder ratio.

• Corrosion Science and Technology
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• 제22권6호
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• pp.447-456
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• 2023

In this work, we performed a comparative study examining two coatings on Ti Gr.1 for use in fuel cell bipolar plates. The coatings consisted of carbon black as the conductor along with acrylic polymer and Ti Sol-Gel binder as the binder. Ti Sol-Gel that had precipitated as TiO₂ in areas impregnated between carbon black gaps, thereby acting as a binder for carbon black and serving as a polymer coating. Neither of the coatings peeled off during the 90° bend test to check formability. The contact resistance of the TiO₂ coating was found to be lower than that of the polymer binder coating. Moreover, due to coating shrinkage (denser) that occurred during the heat treatment process, the TiO₂ binder coating showed almost the same level of corrosion resistance, as measured by potentiostatic and EIS tests, despite being thinner than the polymer coating. However, both the polymer binder coating and the TiO₂ binder coating had many pores and irregularities internally (around 10 ~ 100 nm) and on the surface (0.1 ~ 2 ㎛). We considered that these pores and irregularities contributed to the lower corrosion resistance.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 추계 학술발표회 논문집
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• pp.929-932
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• 2006

The effects of polymer-binder ratio, antifoamer content and shrinkage-reducing agent content on the setting time and drying shrinkage of high-fluidity polymer-modified pastes are examined. As a result, the setting time of the high-fluidity polymer-modified pastes tends to delayed with increasing polymer-binder ratio. Irrespective of the antifoamer content, the drying shrinkage of the high-fluidity polymer-modified pastes tend to decrease with increasing polymer-cement ratio and shrinkage-reducing agent content.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2005년도 추계 학술발표회 제17권2호
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• pp.799-802
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• 2005

The effects of binder content and ceramic powder content on the water absorption, carbonation depth and cl- penetration depth of polymer-modified pastes using redispersible polymer powders and ceramic powder are examined. As a result, the water absorption .of the polymer-modified pastes using redispersible polymer powders tend to decrease with increasing binder content and ceramic powder content. Regardless of the type of redispersible polymer powder, the carbonation depth and cl- penetration depth of the polymer-modified pastes with ceramic powder tend to decrease with increasing binder content and ceramic powder content.

• 전기화학회지
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• 제10권4호
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• pp.295-300
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• 2007

A new characterization method using a porous plug model was proposed to determine the degree of sulfonation (DS) of ionomer binder with respect to the membrane used in membrane-electrode assemblies (MEAs) and to analyze the fraction of proton pathways through ionomer-catalyst combined electrodes in MEAs for polymer electrolyte fuel cells (PEFCs). Sulfonated poly(ether ether ketone) was prepared to use a polymeric electrolyte and laboratory-made SPEEK solution (5wt.%, DMAc based) was added to catalyst slurry to form catalyst layers. In case of the SPEEK-based MEAs in this study, DS of ionomer binder for catalyst layers should be the same or higher than that of the SPEEK membrane used in the MEAs. The porous plug model suggested that most of protons were via the ionomer binder (${\sim}92.5%$) bridging the catalyst surface to the polymeric electrolyte, compared with the pathways through the alternative between the interstitial water on the surface of ionomer binder or catalyst and the ionomer binder (${\sim}7.3%$) and through only the interstitial water on the surface of ionomer or catalyst (${\sim}0.2%$) in the electrode of the MEA comprising of the sulfonated poly(ether ether ketone) membrane and the 5wt.% SPEEK ionomer binder. As a result, it was believed that the majority of proton at both electrodeds moves through ionomer binder until reaching to electrolyte membrane. The porous plug model of the electrodes of MEAs reemphasized the importance of well-optimized structure of ionomer binder and catalyst for fuel cells.

• 공업화학
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• 제29권2호
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• pp.201-208
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• 2018

올소-타입 불포화폴리에스테르 수지와 이소-타입 불포화폴리에스테르 수지를 합성하여 폴리머 모르타르 복합재료의 폴리머 결합재로 사용하였다. 불포화폴리에스테르 수지의 희석제로는 스티렌 모노머와 아크릴로니트릴을 사용하였고, 경화제로 methyl ethyl ketone peroxide (MEKPO), 가속제로 cobalt octoate (CoOc)를 사용하였다. 수지의 형태와 희석제의 종류에 따라 4종의 불포화폴리에스테르 수지를 제조하여 공시체 제조의 폴리머 결합재로 사용하였다. 폴리머 결합재의 첨가량에 따라 총 16종의 폴리머 모르타르 공시체를 제작하여 내열수성 시험을 행한 후 압축 및 휨강도시험, 세공분석 및 SEM 분석을 실시하였다. 시험결과, 이소-타입 불포화폴리에스테르 수지를 폴리머 결합재로 사용한 공시체가 올소-타입 불포화폴리에스테르 수지를 사용한 공시체보다 더 우수한 강도를 나타내었다. 내열수성시험 후에 측정한 총세공량과 세공의 평균직경은 시험 전에 측정한 값에 비하여 감소되었다. 내열수성시험 전에 관찰한 사진에서 폴리머 결합재와 충전재 및 잔골재가 co-matrix 상으로 견고하게 결합되어 있었으나 내열수성시험 후에 관찰한 사진에서는 폴리머 결합재가 대부분 분해되어 있는 것을 관찰할 수 있었다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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• pp.1364-1367
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• 2007

In this study, the effect of binder polymer on the photolithographic patterning of barrier ribs was studied from view point of polymer structure and barrier rib pattern.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2005년도 추계 학술발표회 제17권2호
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• pp.555-558
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• 2005

The purpose of this study is to evaluate the chemical resistance of polymer powder-modified mortars with special accelerator component. Polymer powder-modified mortars with the accelerator are prepared with various polymer-binder ratios, and tested for flexural and compressive strengths and mass change. Chemicals resistance was tested by dealing with $10\%$ HCl and $5\%\;H_2SO_4$ aqueous solution. As a result, the weight reduction ratio of the mortars decreased with increasing polymer-binder ratio. However, in the viewpoint of strength reduction by chemical attacks, the maximum chemical resistance of the mortars was shown at a polymer-binder ratio of $5\%$.

• 한국염색가공학회지
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• 제32권4호
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• pp.226-231
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• 2020

This study investigated effect of particle sizes of polymer binders for digital textile printing(DTP) pigment inks on touch of fabrics. The polymer binders were synthesized via miniemulsion polymerization of methyl methacrylate(MMA), butyl acrylate(BA), N-ethylolacrylamide(NEA) and methacrylic acid(MAA). The prepared binders were applied to black pigment inks and those black pigment inks were used to dye cotton fabrics. Then, color strength, rubbing fastness, stiffness, surface and bending properties of the dyed fabrics were investigated. Depending on the particle size of the polymer binder used, color strength, friction fastness, stiffness, surface and bending properties change. Generally, the larger the particle size of the polymer binder, the softer properties.