• Title/Summary/Keyword: silane coupling agent.

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Loess Dyeing on Cotton Fabrics using Silane Coupling Agent (Silane Coupling제를 이용한 면직물의 황토염색)

  • Kim, Seong U;Nam, Seong U;Kim, In Hoe
    • Textile Coloration and Finishing
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    • v.13 no.5
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    • pp.48-48
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    • 2001
  • The effects of silane coupling agent on the performance properties of cotton fabrics treated with loess and its washing durability were investigated. Mean average diameter of loess was 17.88㎛ and main components were SiO₂, Al₂O₃ and Fe₂O₃. By using the cationic agent, the dyeability of cotton fabrics was improved. The washing durability, antibacterial property and deodorization rate were improved and very good emissivities of far infra-red rays were obtained by using the silane coupling agent. And also the mechanical properties of cotton fabrics, such as primary hand values, were improved.

Loess Dyeing on Cotton Fabrics using Silane Coupling Agent (Silane Coupling제를 이용한 면직물의 황토염색)

  • 김성우;남성우;김인회
    • Textile Coloration and Finishing
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    • v.13 no.5
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    • pp.336-345
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    • 2001
  • The effects of silane coupling agent on the performance properties of cotton fabrics treated with loess and its washing durability were investigated. Mean average diameter of loess was $17.88\mu{m}$ and main components were $SiO_2,\;Al_2O_3\;and\;Fe_2O_3$. By using the cationic agent, the dyeability of cotton fabrics was improved. The washing durability, antibacterial property and deodorization rate were improved and very good emissivities of far infra-red rays were obtained by using the silane coupling agent. And also the mechanical properties of cotton fabrics, such as primary hand values, were improved.

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Dynamic Mechanical and Morphological Properties of Natural Rubber Vulcanizates Containing Fillers

  • Lee, Hae Gil;Park, Chan Young
    • Elastomers and Composites
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    • v.51 no.3
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    • pp.218-225
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    • 2016
  • In order to examine correlation between silane coupling agent and activator which affects the physical properties of silica filled natural rubber compound, such as heat buildup, rebound property, dynamic mechanical and morphological properties were measured. With incorporation of silane coupling agent, $tan{\delta}$ at $0^{\circ}C$ was increased and at $60^{\circ}C$ was decreased, which resulted in improving of wet grip and rolling resistance. When silane coupling agent which is corresponding to 8~10% of silica was used, most favorable heat build up and $tan{\delta}$ was obtained. And also when activator was used, dispersibility of silica was improved as a result of reduction of reaggregation of silica.

Effect on the Physical Performance of Functionalized Silane Coupling Agent on Epoxy-Based Concrete Surface Finishing Material for Parking Floor (기능성 실란 커플링제가 에폭시계 콘크리트 주차장 바닥용 마감재의 물리적 성능에 미치는 영향)

  • Chae, Woo-Byung;Seong, Dong-Yun;Seo, Sang-Kyo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.05a
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    • pp.279-282
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    • 2012
  • This study attempted to the effect on the physical performance of silane coupling agent on solventless epoxy-based concrete surface finishing material for parking floor. Tests were carried out in accordance with KS F 4041 and KS F 4937. The results of compressive strength, flexural compressive are 95.6N/㎟, 25.4N/㎟ and after wheel moving load testing, average abrasive depth is 0.96mm, these results satisfied the quality standard of KS F 4041, KS F 4937. As conclusion, this study confirmed that the silane coupling agent greatly effected on the physical performance of solventless epoxy resin.

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Effect of Kaolinite Treated with Silane Coupling Agent on the Reinforcement of SBR (SBR에 대한 Silane Coupling Agent 처리한 Kaolinite의 보강효과에 관한 연구)

  • Kim, Ki-Joo;Kim, Jong-Seok;Ahn, Byung-Kook;Choi, Hyoung-Jin;Chang, Young-Jae
    • Elastomers and Composites
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    • v.25 no.4
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    • pp.280-290
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    • 1990
  • The effect of surface treatment of kaolinite with silane coupling agent on the reinforcement of SBR was investigated. The possibility of the practical use of kaolinite as an organic filler was also scrutinized and it was found that the reinforcement of SBR was improved by modifying surface of the cheap inactive inorganic filler with organic silane coupling agents. 3-Chloropropyltrimethoxysilane(C-series), 3-mercaptopropyltrimethoxysilane(M-series) and 3-aminopropyltriethoxysilane(A-series) were used as coupling agents. To test the material properties of vulcanized and unvulcanized SBR, Mooney viscosity, modulus, elongation and fractured surface measurements by SEM were carried out by changing the amount of silane coupling agents. Torqe of the unvulcanized SBR following the measurement of the degree of vulcanization was to be increased as the amount of silane was increasing, and Mooney viscosity of M-series and A-series was also increased.

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Influence of Cure Accelerator Content on Change of Crosslink Density by Thermal Aging in Natural Rubber Vulcanizates Filled with Silica (실리카로 보강된 천연고무 가황물의 가교 밀도 변화에 가황촉진제 함량이 미치는 영향)

  • Choi, Sung-Seen;Nah, Changwoon
    • Journal of Adhesion and Interface
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    • v.3 no.2
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    • pp.30-39
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    • 2002
  • The effect of cure accelerator content on the change in crosslink density by thermal aging was studied for silica-filled natural rubber (NR) vulcanizates. Influence of silane coupling agent was also investigated. N-tert-Butyl-2-benzothiazole sulfenamide (TBBS) and bis-(3-(triethoxysilyl)-propyl)-tetrasulfide (TESPT) were used as a cure accelerator and a silane coupling agent, respectively. The crosslink density increased by thermal aging and the increasing level became larger as the aging temperature increased. The degree of crosslink density change of the vulcanizates without the silane coupling agent was larger than that of the vulcanizates containing the silane coupling agent. For the vulcanizates silane coupling agent, the activation energy for the crosslink density change decreased with increase of the cure accelerator content in the vulvanizate.

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Interface Characteristics of Epoxy Composite Treated with Silane Coupling Agent (실란 결합제 처리된 에폭시 수지 복합재료의 계면 특성)

  • Lee, Jae-Yeong;Lee, Hong-Gi;Sim, Mi-Ja;Kim, Sang-Uk
    • Korean Journal of Materials Research
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    • v.11 no.12
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    • pp.1009-1013
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    • 2001
  • The effects of coupling agent on the interface characteristics between epoxy resin and natural zeolite were studied by SEM, optical microscope and universal testing machine (UTM). Epoxy resin as a matrix was diglycidyl ether of bisphenol A (DGEBA)/4,4'-methylene dianiline (MDA)/malononitrile (MN) system and natural zeolite as an inorganic fillet was produced in Korea. With the increment of zeolite content, tensile strength decreased and it was due to the different elastic moduli of two materials. When external stress was loaded on the composites, the stress concentrated on the weakly bonded interface and crack grew easily. To improve the interface characteristics, the surface of the natural zeolite was treated with the silane coupling agent and it was found that the tensile strength was increased. The morphology of the interface showed that the bonding characteristics were modified by coupling agent.

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Effect of Amino Silane Coupling Agent on the AC Electrical Breakdown Phenomena of Epoxy/Layered Silicate Nanocomposite in Needle-plate Electrodes

  • Park, Jae-Jun
    • Transactions on Electrical and Electronic Materials
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    • v.13 no.3
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    • pp.149-152
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    • 2012
  • The effects of amino silane coupling agent on the AC electrical treeing and breakdown behaviors in an epoxy/layered silicate (1 wt%) were examined in needle-plate electrode geometry. A layered silicate was exfoliated in an epoxy base resin by using our AC electric field apparatus. To measure the tree initiation and propagation and the breakdown rate, an alternating current (AC) of 10 kV (60 Hz) was applied to the specimen in needle-plate electrode arrangement with a $30^{\circ}C$ insulating oil bath. In the epoxy/amino silane system, the tree initiation time was 11.5 times higher and the breakdown time was 17.9 times higher than those of the neat epoxy resin. The tree initiation time in the epoxy/layered silicate (1 wt%) system with the amino silane was 2.0 times higher, and the breakdown time was 1.5 times higher than those of the epoxy/layered silicate (1 wt%) system.

Influence of a silane coupling agent on the optoelectrical properties of carbon nanotube/binder hybrid thin films

  • Han, Joong-Tark;Woo, Jong-Seok;Jeong, Hee-Jin;Jeong, Seung-Yol;Lee, Geon-Woong
    • Carbon letters
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    • v.12 no.2
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    • pp.90-94
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    • 2011
  • We present the effect of a coupling agent on the optoelectrical properties of few-walled carbon nanotube (FWCNT)/epoxy resin hybrid films fabricated on glass substrates. The FWCNT/epoxy resin mixture solution was successfully prepared by the direct mixing of a $HNO_3$-treated FWCNT solution and epoxy resin. FWCNT/binder hybrid films containing different amounts of the coupling agent were then fabricated on UV-ozone-treated glass substrates. To determine the critical binder content ($X_c$), the effects of varying the binder content in the FWCNT/silane hybrid films on their optoelectrical properties were investigated. In this system, the $X_c$ value was approximately 75 wt%. It was found that above $X_c$, the coupling agent effectively decreased the sheet resistance of the films. From microscopy images, it was observed that by adding the coupling agent, more uniform FWCNT/binder films were formed.