• 대한전기학회논문지
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• 제41권6호
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• pp.640-651
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• 1992

This paper describes the electric properties of mica reinforced silicone composites with the parameter of curing condition of silicone resin, application amount of silane coupling agent to the mica paper and the mica wt% to the composite. Heat-resistant silicone resin and mica paper made of mica flakes are used to prepared the mica/silicone composite as matrix and filler, respectively. To improve the dielectric properties and interfacial adhesion between matrix and filler, silane coupling agent is applied on the mica paper. As for matrix, tan$\delta$ value of 30$0^{\circ}C$ heat-treated silicone resin is the lowest under 1%. The optimal wt% of coupling agent is 0.3% to the weight of mica paper. 80 wt% of mica as filler to the mica/silicone composite shows the best electric properties. And the mica reinforced silicone composite shows good high-frequency and mechanical tensile stress properties.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1991년도 추계학술대회 논문집 학회본부
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• pp.282-285
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• 1991

Optimum conditions of fabrication and the effects of silane coupling agent on Glass-cloth/unsaturated Polyester composite materials were investigated. Dielectric strength and mechanical tensile strength were significantly improved in the sample with epoxy silane treatment, compared with the case without epoxy silane treatment. Treatment rate of interface coupling agent in composite materials were increased with increases of glass-fiber layers and content of glass fiber.

• Elastomers and Composites
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• 제55권4호
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• pp.339-346
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• 2020

We functionalized a wear-resistant carbon-based MoS2 filler to solve its limited wear condition problem. The filler exhibits excellent lubricative properties. The surface modification of MoS2 was carried out using a (3-glycidyloxypropyl)trimethoxysilane (GPTMS) silane coupling agent to improve the low compatibility and dispersibility of the filler that generally degrade the performance of composites. A silane coupling agent was employed for the functionalization of MoS2, and its effect on the wear resistance of MoS2/Polyamide-6,6 was investigated. The silanization of MoS2 was identified by contact angle analysis and Fourier-transform infrared, energy dispersive X-ray, and X-ray photoelectron spectroscopies. The wear resistance of the composite was found to be improved significantly by the surface functionalization of MoS2.

• 폴리머
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• 제33권6호
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• pp.525-529
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• 2009

우수한 성능의 2층 연성동박적층판(이하 FCCL)을 제조하기 위해서는 동박과 폴리이미드 사이에서 높은 접착력이 요구된다. 이를 위해 이종 재료로 인한 두 계면 사이의 접착력을 향상시키기 위해서는 일반적으로 기능성 실란커플링제가 사용된다. 본 연구에서는 압연동박과 폴리이미드 사이의 접착력 향상과 이미드화를 위한 고온의 열처리 조건에서도 안정한 새로운 형태의 실란커플링제를 합성하였다. 또한, 합성된 실란커플링제를 압연동박에 처리하였을 때, 표면처리제의 농도에 따른 표면변화를 관찰하였으며, 이로 인해 발생되는 접착력 변화를 확인하기 위해서 2층 FCCL을 제조하여 $90^{\circ}$ peel test를 통해 관찰하였다. 그리고, 두 종류의 폴리이미드를 이용한 FCCL에서 실란 커플링제가 접착력에 미치는 영향을 확인하였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1988년도 추계학술대회 논문집
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• pp.43-45
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• 1988

This paper deals with the effect amino silane coupling agent for the composite insulating material (GFRP). Three kinds of coupling agent treatments are studied, that is treatment on glass fiber, epoxy resin and both glass fiber and epoxy resin. The result shows that the optimum electrical and mechanical properties is obtained for the sample treated on the glass fiber with 0.3% amino silane water solution.

• Elastomers and Composites
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• 제43권3호
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• pp.147-156
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• 2008

본 연구에서는 실란 커플링제을 변량 배합하여 습식법과 건식법으로 실리카를 전처리하여 epoxy/carboxyl-terminated butadiene acrylonitirile (EP/CTBN) 복합체를 제조하였다. EP/CTBN 복합체의 경화특성 및 표면자유에너지, 인장강도 및 충격강도의 기계적 특성과 계면 특성을 건식법과 습식법에 따라 고찰하였다. Differential scanning calorimetry(DSC)의 결과 실란커플링제의 양이 증가함에 따라 실리카의 기공을 막아 경화제의 양을 증가시켜 경화온도가 감소되었으며, 건식법보다는 습식법이 EP/CTBN 복합체의 경화온도를 감소시킴을 알 수 있었다. 또한 실란커플링제의 양이 증가함 따라 표면자유에너지와 충경강도가 증가되었으나, 인장강도는 실란커플링제의 양이 4 wt%일 때 감소되었으며, 습식법보다는 건식법이 더 물성을 향상시킴을 알 수 있었다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 추계학술대회 논문집 Vol.15
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• pp.206-209
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• 2002

The purpose of this research was to find influence of compounding materials on electrical properties of silicone rubber such as tracking characteristic. The tracking characteristic was tested through controlling the ATH, a widely use anti-tracking agent. Regarding the particle size and coupling agent of ATH, compound silicone rubber with ATH of coupling agent and larger diameter showed better anti-tracking properties. It can be included that ATH of coupling agent use vinyl silane, dispose of tracking characteristic was achieve excellant results.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2001년도 추계학술발표대회 논문집
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• pp.121-124
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• 2001

Surface-modified silica holds considerable promise in the development of advanced materials for good mechanical properties and stability. In this work, the surface and mechanical interfacial properties of silicas treated with silane coupling agents, such as Y-methacryloxy propyl trimethoxy silane (MPS). Y-glycidoxy propyl trimethoxy silane (GPS), and Y-mercapto propyl trimethoxy silane (MCPS), are investigated. The effect of silane surface treatments of silica on the surface properties and surface energetics are studied in terms of surface functional values and contact angle measurements. And their mechanical interfacial properties of the silica/rubber composites are studied by the composite tearing energy ($G_{IIIC}$). As a result. the mechanical interfacial properties are improved in the case of silane-treated composites compared with untreated one. It reveals that the functional groups on silica surface by silane surface treatments play an important role in improving the degree of adhesion at interfaces in a silica-filled rubber system.

• 대한치과보철학회지
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• 제24권1호
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• pp.177-189
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• 1986

To investigate the bond strength of etched porcelain, porcelain specimens were etched by 5% hydrofluoric acid during the time of 2.5 min., 5 min., 7.5 min., and 10 min. at $23^{\circ}C$ and observed by SEM. Also, electrolytically etched metal was observed by SEM. Etched porcelain specimens were treated or were not treated with Silane coupling agent and bonded to etched metals with Comspan and Panavia. The bonded specimens were stored in water at $37^{\circ}C$. 24 hours after bonding, the bond strengths were measured. There were four groups of 25 specimens each. Group 1 was bonded with Panavia. Group 2 was bonded with Panavia after treated with Silane coupling agent. Group 3 was bonded with Comspan, Group 4 was bonded with Comspan after treated with Silane coupling agent. The results were as follows: 1. he etched porcelains were obviously observed by SEM. 2. The dendritic arms were observed in etched metal by SEM. 3. The bond strength in relation to the increase of etching time increased and an analysis of variance shows significantly different at the 0.01 level in all groups. 4. The bond strength of Silane coupling agent treated groups were higher than the untreated. 5. The ratios of increase of the bond strengths of Silane coupling agent treated groups in relation to the increase of etching of etching time were lower than the untreated. 6. The bond strength of the groups used Comspan were higher than Panavia.

• 접착 및 계면
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• 제8권1호
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• pp.15-27
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• 2007

폴리이미드 필름과 구리의 접착력을 향상시키기 위하여 이온빔과 실란-이미다졸 커플링제를 사용하여 폴리이미드 표면개질을 실시하였다. 실란-이미다졸 커플링제는 구리와의 배위결합을 형성하는 이미다졸 그룹과 실록산 폴리머를 형성하는 메톡시 실란 그룹을 함유한다. 폴리이미드 필름표면은 아르곤/산소 이온빔으로 일차로 처리하여 친수성을 높인 폴리이미드 필름에 커플링제 수용액에 침지하여 폴리이미드 필름 표면에 커플링제를 그라프트시켜 표면개질을 실시하였다. XPS 스펙트럼 분석결과 아르곤/산소 플라즈마 처리는 폴리이미드 표면에 하이드록시 및 카르보닐 그룹과 같은 산소 기능성기를 형성함을 알 수 있었고 폴리이미드 필름 표면에 실란-이미다졸과의 커플링반응에 의하여 표면이 개질되었음을 확인하였다. 이온빔을 사용하여 그라프트된 폴리이미드 필름과 구리와의 접착력은 처리되지 않은 폴리이미드 필름과의 접착력 보다 높은 접착력을 나타내었다. 또한 커플링제로 그라프트된 폴리이미드 필름의 접착력 보다 아르곤/산소의 양자화 이온을 이용하여 개질한 그라프트된 폴리이미드 필름의 시편이 더 높은 접착력을 나타내었다. 구리-폴리이미드 필름의 계면으로부터 박리된 층은 분석결과 완전히 서로 다른 화학적 조성을 나타내었는데 이것으로부터 박리가 접합면의 커플링제 내에서 일어나는 것보다는 폴리이미드와 커플링제의 사이에서 일어남을 확인하였다.