• Journal of the Korea Concrete Institute
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• v.14 no.1
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• pp.92-99
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• 2002

This paper is Intended to investigate physical properties and surface glossing of exposed concrete incorporating granulated blast furnace slag(BS). According to test results there is no remarkable variations in fluidity and air content with increase of BS, but unit weight shows decline tendency Compressive strength at later age gains considerably due to potential hydraulicity reaction of BS. It shows that drying shrinkage increases. It is found that low W/B, surface coating and high BS content lead to favorable effects on the surface glossing of exposed concrete because of filling effects on the voids of the concrete. It is improved by about 7 ％ with increase every 10 ％ of BS content. The effects of form pannel kinds on the improvement of surface glossing are in order for acryl, fancy, steel and wood.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.41 no.2
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• pp.121-126
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• 2015

In general, the pearlescent pigment is a pigment which was used for optical characteristics like pearl, rainbow and metallic luster. Titanium dioxide coated mica plate developed by DuPont in 1965 is currently being used as a main part of pearlescent pigment for cosmetics. Although the smooth and clear surface substrate laminated with 2 ~ 3 ingredients is thicker than a previous monolayer coated substrate, it has been applied for cosmetics as the optical interference powder to realize stronger shine and brighter interference color than monolayer one. In this study, we developed a new optical interference powder with thinner and higher chroma than a current pearlescent pigment for the strong luster and bright interference color. It was prepared from the manufacturing process, in which the coated titanium dioxide precursor was changed and crystallized by coating and heat treatment process with a half of dividing the coated amount of titanium dioxide. We confirmed the dense coating of titanium dioxide grain with Scanning Electron Microscope and measured superior crystallization degree compared with a monolayer coated pearlescent pigment by X-ray Diffraction. It is concluded that our new pearlescent pigment had higher reflectivity of light and stronger interference color than previous products.

• 프린팅코리아
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• v.11 no.5
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• pp.96-97
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• 2012

한국제지는 지난 3월 28일 호텔PJ에서 품질자문위원단 회의를 개최했다. 이날 회의는 세계 인쇄용지 업계의 흐름과 전망에 관한 주제 발표와 신제품 무광택 미도공지인 아르떼 출시 설명회 등으로 진행됐다.

• Applied Microscopy
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• v.39 no.1
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• pp.41-48
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• 2009

We investigated the morphological characteristics of the pearlescent pigment by using scanning electron microscope, energy dispersive X-ray spectrometry and thermal analyzer. The result is that the shape of pigment is platy polygonal form through observing the pearlescent pigment by the scanning electron microscope. The size of pigment is various and not formed in standardized size or shape. The pigment flakes were measured about from $30{\mu}m$ to $300{\mu}m$. The tip of the piece of pigment is pointed shape or angled. The result of observing them by the scanning electron microscope in magnifying high power is that the edge and the lateral face of them is an round form and the measurement of thickness is about $9{\mu}m$. As well using the high magnification scanning electron microscope, the surface of the pigment flake observed like rugged as coating with the $TiO_2$ element, the diameter of the coating particle is around 60 nm, then the coating particle consists of granular substance. Analysis of the configuration elements of pearlescent pigment using by the energy dispersive X-ray spectrometry is that O, Si, C, Na, Ca, Ti, Zn detected in the surface of pigment and its lateral face identifies similar components. In thermal analysis, there are no contained quantity differences between them in beginning from $100^{\circ}C$ to $800^{\circ}C$ showing thermal analysis, 1.1% out of contained quantity reduced at $115^{\circ}C$, 1.7% dropped at $416^{\circ}C$, and 1.9% decreased at $797^{\circ}C$.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2011.03a
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• pp.102-102
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• 2011

레이온 섬유는 dry한 촉감, 고광택, 드레이프성 등 의류 분야에서 요구하는 많은 장점들을 가지고 있으나 타 섬유 소재에 비해 소비량이 적은 것은 합섬이나 면/울 제품에 비해 상대적으로 제품 가격이 높고, 형태안정성이 취약하여 정장 및 캐주얼의 겉감 용도로 쓰기에는 성능 보완이 필요하다. 또한 염색가공 공정에서 구김발생이 많으며, 열고정이 쉽게 이루어지지 않아 습윤강도와 탄성 회복률이 낮아 변형이 쉽게 발생된다. 이에 본 연구에서는 합섬의 장점을 그대로 유지하면서 레이온 섬유가 갖는 고비중과 우수한 드레이프성과 유연한 질감으로 소프트 터치를 발현하는 특수한 레이온 대체 소재를 실현하고자 하였다. 직물에서 드레이프성과 은은한 광택을 확보하기 위해서는 폴리머단계에서 비중과 광택을 발현할 수 있는 무기입자 중 비중이 높고, 중합 후 폴리머 내에서 광택을 유지하는 입자의 선택이 필요한데 본 실험에서는 $BaSO_4$를 이용하여 PET dope액과 중합한 후 용융 방사하여 고비중 폴리에스테르사(100/48)를 제조하였다. 고비중 폴리에스테르사를 이용하여 폭 58inch, 밀도 92T, 중량 324.8g/yd 직물로 제직하여 그에 따른 태를 측정하였다. 태측정기(KES-FB, KATO TECH CO)를 이용하여 인장 & 전단강도, 굽힘강도, 압축강도, 표면측정 시험 결과 $BaSO_4$ 2% 첨가한 원단의 드레이프성이 우수한 것을 확인할 수 있었다.

• Journal of the Korean institute of surface engineering
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• v.19 no.2
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• pp.59-64
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• 1986

Pulse current was empolyed to the chromium electroplating bath of self-regulating high speed in the following range of conditions; 10-80$^{\circ}C$, 0-400A/$dm^2$, 10-100KHz. The current efficiency was compared with that of a conventional direct current plating in respect of current density and electrode interdistance. The effect of pulse current was found to increase the current efficiency at least 10-20 percent more than the conventional direct current plating in the high current density more than 100A/$dm^2$ and at 3-4mm of electrode interdistance. The surface appearance was also studied and known to be of great influenced by pulse frequency.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2003.05a
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• pp.14-18
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• 2003

국내 소모방 업체는 원료를 외국에서 수입하고 있기 때문에 wool 원료를 이용한 고감성 고기능성 제품 개발이 요구되고 있다. 또한 기존 제품은 국제 가격 경쟁력을 상실한 상태이므로 물성개전과 기능성을 향상시킨 획기적인 소재 개발이 요구되고 있는 실정이다. 최근 호주의 CSIRO 연구소에서 개발된 $\ulcorner$Optim$\lrcorner$$^{(R)}$ 은 광택이 뛰어난 모섬유 소재로서 국내에서 수입되어 고감성 의류용 직물로서 상품화가 되고 있다. 그러나 원료가격이 고가인 관계로 원료수금이 원활치 못한 실적이다. 본 연구에서는 생산원가가 저렴하며 50%까지 연신함으로써 광택은 물론 물세탁이 가능한 기능성을 부여할 수 있는 방적 소모사 상태에서 연신하는 기술을 개발하기 위한 최적 공정 조건을 결정하기 위한 실험을 실시하였고 이들 소모사를 이용한 직물의 의류물성을 분석하여 소모사 상태에서 연신기술을 응용한 광택이 우수한 고감성 직물을 개발하기 위해 연구를 수행하였다.

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 1999.11a
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• pp.72-80
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• 1999

친수성의 도공층을 갖고 있는 컬러 잉크제트 용지의 특성을 동적주사 흡액측정, 망점의 화상해석 및 도공층 표면을 주사 전자현미경(SEM)으로 관찰하여 검토하였다. 비잉크제트 용지와 도공지에 비하여 잉크제트 용지는 단시간 동안에 현저한 표면 흡액특성을 나타내었지만 그 특성은 제품에 따라 다르게 나타났다. 망점 특성으로부터 평가한 잉크 방울의 흡수시간은 망점의 면적과는 상관관계를 나타내진 않았으나 진원도와는 부의 상관관계를 나타냈다. 즉 빠른흡액특성은 원형의 망점을 형성하는데 유효하였다. 광택 처리제품과 광택처리를 하지 않은 제품을 비교할 경우 광택처리 제품의 진원도가 낮게 나타났는데 이것은 주사전자현미경의 관찰 결과로부터 도공층을 칼렌더 처리할 때 발생하는 할열 때문인 것으로 나타났다.

• KOREAN POULTRY JOURNAL
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• v.31 no.5 s.355
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• pp.102-106
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• 1999

• Journal of the Society of Cosmetic Scientists of Korea
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• v.36 no.2
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• pp.99-103
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• 2010

Waxes, or long-chain hydrocarbons, may be obtained naturally from animals, vegetables, and mineral waxes, or may be synthesized. The oil-wax gels are widely applied to lots of cosmetics such as lipsticks. For example, the lipstick texture is strongly dependent on the glossiness of the oil-wax gels. Extensive research has been carried out to investigate the lattice structure of wax mixture in pure solvents (hydrocarbons) and defined mixtures. However, only a limited amount of work has been published on the lattice structure of wax matrixes in undefined mixtures. The objective of this study was to investigate the relationship between the lattice structure of ceresin wax and different wax mixtures and the glossiness of oil-wax gels. Recently visual factors such as the glossiness of skin are generally known as the words to express the beauty. The mechanism of glossiness has been suggested to understand the changes that occur in the lattice structure of the wax matrixes when they are forming gels and also the effects of the nature of solvent. The present work investigates the lattice structure of the wax matrixes and glossiness of oil-wax gels obtained from ceresin and microcrystalline wax as well as of the gels formed by different waxes in solvent.