• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2007.11a
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• pp.355-355
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• 2007

염료감응형 태양전지(Dye-sensitized Solar Cell; DSSC)의 에너지 변환효율을 높이기 위해 유리분말을 첨가하여 빛의 분산특성 및 빛의 이용률을 높이고 있지 알아보자고 실험을 하였다. 저온소성용, 고온소성용 두 가지 유리 분말을 각각 첨가한 경우 TiO2 광전극 박막표면에 유리분말의 잔류로 인한 영향을 X-RD로 분석 하였고 박막의 입자들의 형상변화와 분포를 알아보기 위해 FE-SEM으로 관찰하였으며 유리분말의 첨가량 별 광전류-전압 곡선으로부터 최적의 첨가량을 확인하였다.

• Journal of the Korean Ceramic Society
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• v.37 no.12
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• pp.1178-1186
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• 2000

타일의 내마모성과 내산성을 향상시키기 위해 결정화유리가 최근에 새로운 유약 재료로서 소개되고 있다. 신 유약의 연구에 사용된 조성은 $Ca_2$ZrSi$_4$O$_{12}$ 상에 근접하는 CaO-ZrO$_2$-SiO$_2$계의 유리조성의 분말로, 마이크로파 가열 (2.45 GHz)에 의해서 900-120$0^{\circ}C$의 0-20분간 소성되어 평가되었다. 그 결과, 100$0^{\circ}C$ 이상에서 소성한 시편은 내부 결정화를 나타내었으며, 결정상은 미세(5$mu extrm{m}$)한 크기를 갖는 $Ca_2$ZrSi$_4$O$_{12}$가 주 결정상이며, $Ca_2$ZrSi$_4$O$_{12}$, CaSiO$_3$, SiO$_2$의 세 상이 나타났다. 소결체의 미세구조는 사용한 유리분말의 입도의 영향을 받았다. 미세분말 (<38$\mu\textrm{m}$)을 이용한 소결체의 조직이 조세분말 (45-150$\mu\textrm{m}$)의 경우보다 수축율면에서 높았으며 낮은 기공도를 갖는 미세구조를 가졌다. 마이크로파에 의한 유리분말의 소성은 1000-120$0^{\circ}C$ 구간에서 10분 이내 결정화가 완료되는 급속 가열 공정이었으며 CaO-ZrO$_2$-SiO$_2$계 결정화 유리 제조에 균일한 체적가열을 할 수 있었다.

• Applied Chemistry for Engineering
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• v.24 no.3
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• pp.239-246
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• 2013

Principle of foamed glass manufacturing process first starts with putting vitreous material powder into a mold. After the foaming calcination, foamed body should be annealed after separation from the mold. For this reason, existing manufacturing process could not be a continuous type process. In this study, in order to develop a continuous production process of foamed glass, the possibility of new foam glass manufacturing process was investigated by foaming calcination of the compact body obtained from compression-molding of vitreous raw materials in stead of using a mold. Through the experimental results of the foaming calcination of the compact body with adding various foaming agents such as $Na_2CO_3$, $CaCO_3$ and petroleum coke, into hydrated soda-lime vitreous raw materials, it was shown that developing a continuous process without using any molds for manufacturing foamed glass would be possible.

• Journal of the Microelectronics and Packaging Society
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• v.2 no.1
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• pp.49-58
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• 1995

출발물질은 cordierite 유리와 borosilicate/Si3N4 복합분말을 사용하였다. Cordierite 유리조성은 무게비로 17.8MgO-23.1Al2O3-48.1ASiO2-5.0ZnO-1.0B2O3를 선택하였다. Borosilicate/Si3N4복합분말은 sol-gel법으로 a-si3N4 core 분말에 borosilicate 겔을 코팅하여 얻었다. 복합분말과 cordierite 유리 분말을 부피비로 0/100, 12.5/87.5 및 25/75의 조성으로 혼합하여 tape casting 에 의해 green sheet를 제작하였다. 이들 sheet들을 800~100$0^{\circ}C$에서 2시간 소성하여 얻은 시편을 SEM, XRD, 밀도, 유전상수 등을 측정하여 저 유전율의 저온 소성 기판재료를 제조하기 위한 조건들을 검토하였다.

• Journal of Korean Ophthalmic Optics Society
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• v.5 no.1
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• pp.19-30
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• 2000

LaF, KzFS1, LBO glass were manufactured successfully by using platinum crucible in LaF and using clay crucible in the KzFS1 and LBO. There was optically transparent and the refractive indexes were measured by minum deviation method of prism. LaF, KzFS1, LBO show that the refrective indexes are $n_d$ = 1.770 in LaF, $n_d$ = 1.603 in KzFS1, $n_d$ = 1.560 in LBO. The transmittance were obtained that LaF has 85%, and KzFS1 has 83% and LBO has 89% in visible range. These glasses have no any absorption spectrum under visible range. Therefore it has no any color.

• Journal of Adhesion and Interface
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• v.8 no.4
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• pp.14-22
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• 2007

In the present study, the effect of milled glass powder and liquid-type nitrile rubber (NBR) on the thermal stability of phenolic resin and the dynamic mechanical properties of glass braid/phenolic composites has been investigated by means of thermogravimetric analysis and dynamical mechanical analysis. It was found that both milled glass power and NBR filled in the waterborne phenolic resin significantly influenced the thermal stability of phenolic resins and the storage modulus and tan delta of the composites. The presence of glass powder increased the thermal stability of the phenolic resin, whereas the presence of NBR resulted in the weight loss in the specific temperature range. The thermal stability of the phenolic resins without and with the fillers was dependent not only on the cure temperature but also on the cure time. The variation of the storage modulus and tan ${\delta}$ of strip-type glass braid/phenolic composites was also influenced with the introduction of glass powder and NBR to the phenolic matrix as well as by the cure conditions given.

• Proceedings of the Korean Ceranic Society Conference
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• 2000.04a
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• pp.162.1-162.1
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• 2000

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.272-277
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• 2019

In this paper, a manufacturing method of an anti-glare cover glass on LCD for outdoor use is proposed. The main specification of cover glass is hardness and anti-glare. Hardness is achieved by using the tempered glass, and anti-glare(AG) film is laminated to meet anti-glare specification no the tempered glass. However, the AG film is difficult to maintain the AG performance continuously because the abrasion resistance of the PET film itself is as weak as about 3H. Therefore, a novel production procedure using screen printing method is proposed. The proposed coating is implemented by applying $ZnO-B_2O_3-SiO_2$ powder on glass surface and the glass is made with enhanced hardness through tempering process. In order to apply the ZBS powder uniformly on the glass surface, a screen printing process is used. The main parameters to be considered in screen printing are the oil concentration and mesh opening size. Because the amount of ZBS powder applied to the printing process is controlled by these two parameters, the correlativity is confirmed through the experiments. In order to evaluate the performance of the proposed method, the haze, surface roughness and transmittance are selected as the performance index and are compared with the AG film. As a result of comparison, it is verified that the transmittance of the proposed tempered glass is 83.1%, which is slightly lower than 89.5% of AG film, but the hardness is more than double to 7H.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.32 no.6
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• pp.725-729
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• 1999

In order to utilize large size anchor effectively, fermented and powdered anchovy seasoning for extractives was manufactured, Fermented anchovy saesoning was fabricated by adding $10\%$ koji of Aspergillus oryzae and mixing with $5\%$ Laminalia. The optimum fermentation temperature, humidity and time for manufacture of anchovy saesoning were $40^{\circ}C$, RH $80\%$ and 48 hrs, respectively. The amount of total free amino acids in anchovy seasoning with $5\%$ Lansinaria was 6,486.9 mg/100 g, while that of commercial product was 444.4 mg/100 g. The principal taste compounds in anchovy seasoning material were IMP and amino acids such as leucine, glutamic acid, histidine, alanine and valine. Extractive nitrogen and organoleptic quality of the extractives in anchovy seasoning packed in tea bag with air permeability, 100 $m^3/m^2/min$, were better than those of commercial product.

• 기계와재료
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• v.21 no.2
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• pp.136-145
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• 2009

최근 타이타늄 제련기술 발달과 함께 원광석에서 고품위 타이타늄 분말을 연속적으로 제조할 수 있는 방법 들이 소개되고 있다. 이들 분말 타이타늄의 제조방법은 기존의 Kroll process에서 제조되는 스폰지를 재용해하여 분말을 만드는 방법에 비하여 원가절감 측면에서 매우 유리하다. 이들 신공정으로 제조된 괴상의 고품위 타이타늄 분말을 이용하여 정형가공을 수행하면 상당한 원가절감이 예상되고, 이에 따라 그 사용량은 급격히 증가되리라 판단된다. 본 지에서는 저가 타이타늄 개발과 관련하여, 최근의 분말 타이타늄의 제조방법에 대하여 소개하고 이를 이용하는 공정기술에 대한 내용을 소개하고자 한다.