• 한국염색가공학회지
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• 제32권1호
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• pp.19-26
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• 2020

The previous study reported that the quaternary copolymer of MMA, BA, MAA, and NEA was expected to be a good monomer composition for a binder polymer with good rubbing fastness for digital textile printing(DTP) pigment ink. However, the rubbing fastness of the dyed fabric with the quaternary copolymer binder containing pigment ink is not enough to be commercially used. Therefore, this study aims to optimize MMA:BA:MAA:NEA composition for improved rubbing fastness. And the binder polymer with various MMA:BA:MAA:NEA compositions were synthesized using miniemulsion polymerization. The particle size, viscosity, molecular weight, and Tg of the synthesized binder were evaluated. And the color strength and rubbing fastness of the black pigment ink dyed cotton fabrics with the prepared binders were also evaluated. Then, the stiffness of undyed and dyed cotton fabrics were evaluated to investigate the changes in touch as the binder structure changes.

• 한국산학기술학회논문지
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• 제6권4호
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• pp.337-341
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• 2005

본 연구에서는 광촉매 $TiO_2/P-25$를 POF에 코팅하여 IPA 분해 활성을 고찰한 결과, 코팅 시 용매의 조건은 에탄올에서 IPA의 분해효율이 가장 우수하였고 무기바인더(KR-400), 유기바인더(A-9540) 및 무$\cdot$유기 복합바인더(GPTMS, TMOS)중에서 유기 바인더인 A-9540을 사용했을 때 효율이 가장 우수한 것으로 나왔다. 유기 바인더는 광 분해반응에 의하여 바인더 자체가 분해되고 무기 바인더는 부착성이 떨어졌다. 유$\cdot$무기 복합 바인더 중에서 광분해 효율이 뛰어난 TMOS를 바인더로 선정하여 TMOS/P-25의 비율을 0.05부터 1로 바꾸어 광분해 실험을 수행한 결과, 바인더로써 TMOS의 첨가는 IPA분해 효율을 낮게 하였다.

• 한국농공학회논문집
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• 제64권1호
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• pp.91-98
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• 2022

Multi-layered geotextile tubes may have problems on its stability when used as cofferdam. This study presents the shear strength characteristics at the interface between geotextiles and a cementitious binder material to improve the stability of the multi-layered geotextile tubes. In this study, two different types of geotextiles are used. After mixing with a rapid setting cement, fly ash, sand, accelerator, and water, the cementitious binder material is prepared at the interface between two geotextile samples and cured under water for a desired period. The specimen is placed on upper and lower direct shear boxes by using clamping systems. A series of direct shear tests for two different geotextiles are performed along the curing time under three vertical stresses. Experimental results show that the shear strength at the interface between the cementitious binder material and geotextiles is greater than that at the interface between two geotextiles. For two types of geotextiles, apparent cohesion occurs at the interface between the cementitious binder material and geotextiles. In addition, the friction angles for any curing time are improved, compared to the interface between two geotextiles. The cementitious binder material suggested for the interface between two geotextiles may be useful for the reinforcement of multi-layered geotextile tubes.

• 대한안전경영과학회지
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• 제25권1호
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• pp.23-29
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• 2023

Among the Additive Manufacturing (AM) technologies, the Binder-Jetting printing technology is a method of spraying an adhesive on the surface of powder and laminate layer by layer. Recently, this technique has become a major issue in the production of large casting products such as ship-building, custom vehicles and so on. In this study, we performed research to make actual mold castings and increase mechanical property by using special sand and water-based binders. For use as a mold, it has a strength of more than 3MPa and permeability. Various experiments were carried out to obtain suitable them. The major process parameters were binder jetting volume, binder types, layer thickness and heat treatment condition. As a result of this study, the binder drop quantity was measured to be about 60 pico-liter, layer thickness was 100㎛ and the heat treatment condition was measured about 1,000℃ and compressive strength were measured to be more than 5MPa. The optimum condition of this experiment was established through actual casting of aluminum. The equipment used in this study was a Freeforms T400 model (SFS Co., Ltd.), and the printing area of 420 * 300 * 250mm and resolution of 600dpi can be realized.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 봄 학술발표회 논문집
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• pp.1029-1034
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• 2001

The effects of binder content and silica sand content on the freezing and thawing resistance of lightweight polymer concrete are examined. As a result, the mass loss and pulse velocity of lightweight polymer concrete decrease with increasing binder content and silica sand content. The relative dynamic modulus and durability factor of lightweight polymer concrete reaches minimum at a silica sand content of 50% and a binder content of 28%, and is inclined to increase with increasing binder content and silica sand content.

• 한국세라믹학회지
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• 제33권12호
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• pp.1373-1379
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• 1996

Change of sintering shrinkage in alumina-based multilayer ceramics was observed in various lamination condi-tions and binder burnout (BBO) temperatures. It was found that the linear shrinkages in X and Y directions were nearly the same with the BBO temperatures but a large shrinkage difference in Z direction was observed. However this phenomenon was diminished when BBO temperature was increased. A linear relationship between the laminated density and the sintering shrinkage was found and the slope was independant on the BBO temperature but dependant on the shrinkage direction.

• 한국분말야금학회:학술대회논문집
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• 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part2
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• pp.706-707
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• 2006

Premixes treated with a binder, such as in the FLOMET process, exhibit better flow, reduced dusting and segregation and improved productivity and part consistency compared to conventional premixes. The binder treatment is highly suitable for high performance P/M applications which often require premixes containing very fine alloying additives and excellent die filling characteristics. With this process, various binders and lubricants can be utilized in order to make premixes with unique properties. In this paper, the characteristics and performances of bonded premixes are reported.

• 접착 및 계면
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• 제21권4호
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• pp.143-155
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• 2020

Sol-Gel 공정을 통해서 제조되는 유-무기 하이브리드 화합물들은 방청 코팅, 방빙 코팅(Anticing), 자가 세정 코팅, 반사 방지 코팅 등과 같은 기능성 코팅 재료로 널리 사용되어져 왔다. 특히 소수성 코팅 표면을 제조하기 위해서는 코팅표면의 표면에너지가 낮고 코팅 표면의 조도를 제어가 요구된다. 표면에너지와 표면 조도를 조절하는 전형적인 공정은 in-situ fabrication 공정, 'Pre-fluorinating/Post-roughening', 'Pre-roughening/ Post-fluorinating이다. 본 연구에서는 in-situ fabrication 공정인 Particle-Binder 공정을 이용해서 소수성 코팅표면을 제조하였다. 3관능기 유기실란화합물과 불소 함유 유기실란 화합물과의 가수분해 및 축합반응을 통해 제조된 불소함유 유-무기 하이브리드를 바인더로 사용하여서 무기물 나노입자와 혼합하여 소수성 코팅액을 제조하고 유리 기재 위에 스핀코팅 후 열건조하여서 코팅막을 제조하였다. 바인더인 유-무기 하이브리드 화합물의 불소 함유 실란화합물의 첨가량, 첨가순서, 무기물 나노입자 첨가량에 따른 코팅막의 물성 변화를 조사하였다. 분석결과 불소 함량이 10 wt%인 유-무기 하이브리드 화합물(GPTi-HF10)을 바인더로 사용하여서 제조된 코팅막이 가장 소수성이 우수하였으며 수접촉각은 (107.52 ± 1.6°), 이 바인더와 무기물 나노입자의 무게비가 1:3인 경우(GPTi-HF10-MS 3.0)에 가장 높은 수접촉각(130.84±1.99°)을 나타내었다.

• 한국건설순환자원학회논문집
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• 제8권1호
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• pp.1-10
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• 2013

본 연구에서는 OPC 및 BFS 혼입 콘크리트의 초기재령 압축강도 향상을 위해 산업부산물인 티탄석고, 정수오니를 활용하여 경제성을 만족하면서 콘크리트의 조기강도(재령 1, 3일)를 향상시킬 수 있는 촉진제(이하 HSB) 개발을 위한 기초적 연구를 실시하였다. 조강형 분체의 제조를 위한 산업부산물의 조합 비율은 기초 실험 및 성분분석을 통해 티탄석고(4) : 석회석(3) : 정수오니(3)의 비율로 조합을 확정하였으며, HSB의 혼입률은 사전시험을 거쳐(7~9) %가 적정한 것으로 나타났다. 페이스트 경화체의 SEM 촬영 결과 HSB 혼입을 통한 자극으로 인해 수화반응이 촉진되어 수화생성물이 다량 분포한 것을 SEM 측정을 통해 확인 할 수 있었으며, HSB 혼입 콘크리트 압축강도 측정결과 HSB를 혼입함에 따라 Plain 배합에 비해 초기재령에서 높은 압축강도 발현율을 나타내는 것을 확인할 수 있었다. 또한 GHSB에 비해 FHSB 배합이 더욱 우수한 강도를 나타내었으며, FHSB 치환율이 증가함에 따라 압축강도는 소폭 상승하는 결과를 나타내었다. 한편, HSB 및 혼합시멘트를 사용한 콘크리트의 경우 촉진재 종류에 관계없이 촉진재 치환율 9 %에서 Plain 배합 이상의 조기강도를 발현하는 것으로 나타났으며, 촉진재 종류에 따른 영향을 알아본 결과, GHSB에 비해 FHSB가 재령 1, 3일에는 더욱 우수한 조기강도 발현성능을 나타내었다.

• 대한기계학회논문집A
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• 제23권6호
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• pp.952-960
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• 1999

The effects of binder on the mechanical properties of the preforms and metal matrix composites (MMCs) were studied. Fibers were $9Al_2O_3{\cdot}2B_2O_3(Alborex)$, HTZ and $Al_2O_3$ fibers(Saffil) and binders were organic binder, inorganic binder, polyacrylamide under various PH conditions. Compressive strength of the preform increased with the addition of inorganic binder. The polyacrylamide did not improve the permeability of the preforms. PH of the slurry should be controlled because it affects the viscosity of the slurry. Good preforms were obtained under following conditions : 3 wt% inorganic binder, 0.1 wt% organic binder, 0.1 wt% polyacrylamide and PH 9. Tensile tests of MMCs were conducted at $20^{\circ}C,\;150^{\circ}C,\;250^{\circ}C,\;350^{\circ}C$ using MTS(100KN USA). Wear tests were conducted under various sliding speeds. High temperature($250^{\circ}C$) tensile strengths of Alborex/Saffil/AC8A and HTZ/AC8A are 80% and 75% of the room temperature tensile strengths respectively. The tensile and wear properties of the Alborex/Saffil/AC8A are superior to that of the HTZ/AC8A. The wear behavior of HTZ/AC8A shows more orthotropic characteristic than that of Alborex/Saffil/AC8A.