• Title/Summary/Keyword: 물성 특성

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Cooking Characteristics of Rice Noodles with Added Cellulose Ethers Based on Rheological and Turbidity Measurements (셀룰로오스 에테르 첨가 쌀 면의 조리 특성)

  • Um, In Chul;Yoo, Young Jin
    • Current Research on Agriculture and Life Sciences
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    • v.32 no.2
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    • pp.85-89
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    • 2014

  • This study uses turbidity and rheological measurements to examine the effects of the molecular weight (MW), substitution type and substitution degree of cellulose ether and water content on the cooking characteristics of rice noodles, the turbidity of the cooking solution, and the compression strength of the cooked noodles. When increasing the MW of cellulose ether and water content, the turbidity decreased, thereby improving the morphological stability of the rice noodles during cooking. Thus, when controlling the above factors effectively, the rice noodle cooking solution had a lower turbidity than with wheat noodles. Measuring the compression strength of the rice noodles using a rheometer was also effective for examining the pasting characteristics of the rice noodles and texture changes during cooking. As a result, the water content and MW of cellulose ether were found to affect the pasting characteristics and texture of the rice noodles more than the other factors examined.

  • https://doi.org/10.14518/crals.2014.32.2.010 인용 PDF

Study on the Effect of Physical Properties of Fuels on the Anode Reaction in a DCFC System (연료의 물리적 특성과 직접탄소연료전지의 연료극 반응성에 관한 연구)

  • Ko, Tae-Wook;Ahn, Seong-Yool;Choi, Gyung-Min;Kim, Duck-Jool
    • Journal of Energy Engineering
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    • v.20 no.4
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    • pp.309-317
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    • 2011

  • The effect of physical properties of coal fuels and carbon particle on performance of DCFC (Direct Carbon Fuel Cell) was investigated. Shenhua and Adaro were selected as coal fuel and carbon particle was used for comparing with coal. The Ultimate, proximate, SEM, XRD, and BET analysis of samples were conducted. The component of char was more important than that of raw coal because the operating temperature of reactor is higher than devolatilization region of coal. The surface area and volume of pores affected significantly the performance of the system than content of fixed carbon or char rates. The performance of DCFC with carbon particle was in proportional to working temperature.

  • https://doi.org/10.5855/ENERGY.2011.20.4.309 인용 PDF KSCI

Study on Thermal and Physical Properties of One-component Curable Hybrid Polyurethane Elastomer (1액 경화형 하이브리드 폴리우레탄 탄성체의 열적, 물리적 특성에 관한 연구)

  • Mok, Dong Youb;Kim, In-Soo;Kim, Dong Ho;Kim, Gu Ni
    • Elastomers and Composites
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    • v.47 no.4
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    • pp.318-328
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    • 2012

  • In this study, the one-component curable polyurethane resin was manufactured using blocked isocyanate and hybrid technology. To prepare the one-component curable hybrid polyurethane, silica hybrids including hydroxyl group was synthesized, and the size, shape and distribution of hybrid particle in polyurethane resin were confirmed. Then the dissociation property, mechanical property and molding property of blocked isocyanate were investigated. The dissociation property of blocked isocyanate in one-component curable polyurethane became better as the heating temperature and treatment time increased. The synthesized silica hybrid had spherical appearance and size of 23~27 nm in diameter, and it was observed that the hybrid particles were homogeneously distributed in polyurethane structure. In the case of hybrid polyurethane, the mechanical property, anti-abrasion and thermal property were higher than those of general polyurethane, and it was observed that the mechanical property was maintained when the plasticizer was introduced.

  • https://doi.org/10.7473/EC.2012.47.4.318 인용 PDF KSCI

A Study on the Properties of Solid Propellants with Respect to the Crystal Phase of HNIW (HNIW 결정상에 따른 고체추진제 특성 연구)

  • Jang, Myungwook;Kim, Taekyu;Jung, Hoon;Lee, Dug Bum
    • Journal of the Korean Society of Propulsion Engineers
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    • v.23 no.3
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    • pp.44-50
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    • 2019

  • HNIW is a high energy material and has four crystalline phases, it is known that the thermal properties of the material depend on the crystal phase. In this sturdy, the viscosity, mechanical and burning properties of a solid propellant with nitrate ester polyester(NEPE) system with respect to the crystal phases of HNIW. According to the crystal phase of HNIW, the mechanical properties of the cured propellant did not change considerably, however differences were observed in the burning properties. Considering both a high density and stable burning properties, the optimum crystal phase of HNIW can be identified as the main factor influencing to the NEPE system propellant.

  • https://doi.org/10.6108/KSPE.2019.23.3.044 인용 PDF KSCI