• 한국전기전자재료학회:학술대회논문집
• /
• 한국전기전자재료학회 1999년도 추계학술대회 논문집
• /
• pp.495-497
• /
• 1999

In order to determine what influences the interfacial breakdown in EPDM/XLPE laminates, We made the breakdown test ceil and this was pressure controllable breakdown test cell. We make the needle electrode (tip radius: about 10 micrometer) using electrochemical method. We studied the interfacial silicone oil was higher than that with silicone grease. As a function of heat treatment time in a vacuum, interfacial breakdown strength increased much in XLPE/EPDM laminates pasted with silicone grease but increased a little in that with silicone oil.

• 한국염색가공학회지
• /
• 제23권2호
• /
• pp.118-130
• /
• 2011

In this study, hydrophilic polyurethane (PU) was synthesized by one shot process to get good non-swelling effect and to keep high breathability using reactive silicone oil of mono terminal and bi-terminal types. We also blended non reactive silicone oil with pure hydrophilic PU to compare non-swelling effect and breathability with hydrophilic PU synthesized by the two types of reactive silicone oils. The hydrophilic films were analyzed by nuclear magnetic resonance (NMR) spectroscopy, scanning electron microscope (SEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray photo electron (XPS) spectroscopy, energy dispersive spectrometry (EDS), breathability, waterproofness, tensile strength, contact angle and swelling effect. The results showed that the film made by hydrophilic PU which was synthesized with mono terminal type silicone oil provided good non-swelling effect and acceptable moisture permeability due to the modified surface properties.

• 한국해양환경ㆍ에너지학회지
• /
• 제14권4호
• /
• pp.280-286
• /
• 2011

본 연구에서는 기름에 대한 실리콘의 선택적 반응 현상을 이용하여 해상에 유출된 기름을 탐지하는 방법과 이를 적용한 센서의 특성을 실험적으로 분석한 결과를 제시한다. 기름을 탐지하기 위한 방법으로는 기름과 접촉시 실리콘고무의 부피가 변화되는 성질을 이용하였으며 이를 정량적으로 측정하기 위해서 스트레인 게이지와 실리콘 고무가 결합된 새로운 형태의 센서 코어를 제안하였다. 기름의 종류별 센서 코어의 특성 실험을 통해 유출유 탐지 센서로 사용이 가능함을 확인하였고, 해당 센서의 실해역 적용을 위해서 부이형태의 센서 플랫폼을 센서 코어 및 스트레인 계측기와 통합시켜, 기름 유출이 모사된 조건에서 기름을 탐지하는 실험을 통해 여러 종류의 기름의 존재 유무를 탐지할 수 있는 센서로 활용할 수 있음을 보였다.

• 한국식품영양학회지
• /
• 제13권6호
• /
• pp.534-538
• /
• 2000

대두유를 기초로 한 튀김유에 capsicum, butter flavor, 규소수지를 각각 0.20, 0.15%($\omega$/$\omega$) 및 10ppm 처리하여 가열안정성의 향상 및 육두향 약화에 효과가 있는 것으로 확인되었다. 즉, capsicum과 규소수지를 병행처리한 튀김유는 185$\pm$2$^{\circ}C$의 온도조건 하에서 3시간 동안 연속적으로 열처리할 경우 AV 및 SP가 각각 무처리군의 0.385, 22$0^{\circ}C$에 비하여 크게 향상된 0.301, 232$^{\circ}C$를 나타내었다. 이러한 효과는 capsicum의 항산화 효과와 함께 소포제의 일종인 규소수지의 작용에 따라 가열처리에 따른 튀김유의 표면적 팽창을 방지하여 유리지방산생성 및 연기발생을 억제한데 따른 효과인 것으로 판단되었다. 또한, 0.15%($\omega$/$\omega$)의 butter flavor처리에 따라 튀김유 및 튀김물에서 발생하는 육두향 및 기름타는 냄새를 막아주는 효과가 인정되어 새로운 형태의 튀김유 제품 생산이 가능할 것으로 기대되었다.

• Bulletin of the Korean Chemical Society
• /
• 제30권4호
• /
• pp.821-824
• /
• 2009

In this study, a hydrogenated lecithin-containing nanoemulsion was prepared from hydrogenated lecithin and silicone oil. Tween-60 and liquid paraffin, widely known emulsifiers, were used as standard substances, and high shear was produced by utilizing a high shear homogenizer and microfluidizer. The properties of the nanoemulsion prepared with hydrogenated lecithin were evaluated by measuring interfacial tension, dynamic interfacial tension, droplet size, zeta-potential, friction force, skin surface hygrometery, and dermal safety. The interfacial tension of lecinol S10/silicone oil was lower than that of lecinol S10/liquid paraffin. The nanoemulsion prepared from hydrogenated lecithin shows lower zeta-potential, skin surface hygrometery, and friction force compared with a general emulsion. The silicone nanoemulsion prepared from hydrogenated lecithin showed a zero value in the patch test and thus exhibits high dermal safety.

• 대한설비공학회:학술대회논문집
• /
• 대한설비공학회 2004년도 동계학술대회 논문집
• /
• pp.147-147
• /
• 2004

• 한국염색가공학회지
• /
• 제5권2호
• /
• pp.125-133
• /
• 1993

This study was to investigate the application of foam finishing technology (FFT) for the silicone finishing of cotton fabrics and the tluorochemical finishing of polyester fabrics. The repellency properties, soil resistance properties and selected physical properties were demonstrated and compared the foam finishing with the conventional padding application. Amino-funetional silicone prorided better durability than epoxy-functional silicone and conventional reactive silicone after three launderings. Foam finishing fabrics improved stiffness but showed lower or equivalent water and oil repellency properties, soil resistance properties, tearing strength and abrasion resistance than those of the fabrics treated by conventional padding process. But, it was evident that the foam application of silicone and fluorochemical finishes to the fabrics were feasible.

• 한국전기전자재료학회논문지
• /
• 제15권2호
• /
• pp.133-140
• /
• 2002

This paper aims to investigate the effect of silicone oils as processing agent affecting the loss and recovery of hydrophobicity. The recovery of hydrophobicity was evaluated by the measurement of the surface electrical resistivity and the contact angle on the SIR surface. Two kinds of silicone oils (1 and 2) having different molecular weight were selected under a consideration of hydrophobicity and processability. SIR specimens were exposed to corona discharges in air and the specimens were analyzed with contact angle and surface resistance measurements. It was observed that the contact angle and the surface resistivity of SIR increase gradually with testing time. The fast recovery of hydrophobicity of SIR, expressed by the increment of contact angle and surface resistivity, was showed in SIR2 containing silicone oil 2.

• 한국미생물·생명공학회지
• /
• 제17권3호
• /
• pp.219-223
• /
• 1989

Hydrocortisone의 $\Delta$$^1$-Dehydrogenation에 의한 prednisolone의 생산에서 소포제인 silicone oil과 neolin 302의 영향이 조사되었다. 미생물 전환방법은 pseudo-crystallofermentation 기법에 의해 수행되었다. 스테로이드 입자들은 소포제와의 hydrophobic-hydrophobic interaction에 의해 서로 응집되었다. 이러한 응집 현상에 의해 고체 기질의 용해속도와 비례하는 물질전달 면적이 감소됨으로써, 결국 생물전환속도의 감소를 유발하게 된다. Neolin은 silicone oil에 비해 전환속도에 더욱 좋지 않은 영향을 끼쳤으며, 소포제 농도가 증가할수록 전환속도는 감소하였다.

• Macromolecular Research
• /
• 제13권5호
• /
• pp.409-417
• /
• 2005

The surface of rutile titania nanoparticles was chemically modified by reacting with alkoxy silane. The surface and rheological properties in silicone oil having a wide range of viscosity were investigated. Total surface free energy($\gamma_S$) of the titania particles decreased from 53.12 to 26.94 mJ/$m^2$ as the silane used for surface treatment was increased from 0 to 5.0 wt$\%$. The surface free energy of neat silane was 25.5 mJ/$m^2$, which is quite close to that oftitania particles treated with 5.0 wt$\%$ silane. Due to the hydrophobic nature oftreated-titania, the contact angle was accordingly higher for polar solvent in the order of water>ethylene glycol> formamide>$\alpha$-bromonaphthalene. In sum of rheological behavior, as the applied shear stress or viscosity of the silicone oil increased, the titania particles tend to form layers and agglomerated clusters, showing shear-thinning and shear-thickening behaviors, sequentially. A good dispersion of discrete titania particles obeying a Newtonian flow behavior was achieved at a surface energy or low concentration of silane-treated titania particles in hydrophobic silicone oil.