Pefonnance Improvement of Unsaturated Polyester/Alumina Composites for Organic Building Material : (Ⅲ) The Effect of Polyvinyl Alcohol Fiber as a Reinforcement
Jang J, Kim S, Kim B
유기 복합 건축재용 불포화 폴리에스테르/알루미나 복합재료의 물성향상 : (Ⅲ) 강화재인 폴리비닐 알콜 섬유의 영향에 대한 고찰
장정식, 김세종, 김병철
Abstract
In order to apply for the organic building materials, polyvinyl alcohol(PVA) short fiber, which has good mechanical and adhesion properties. was introduced to unsaturated polyester/alumina composite. Its mechanical properties were increased by surface treatment with silane coupling agent. Maximum flexural properties of surface treated composite were observed at silane 0.6 wt%. Diffuse reflectance infrared fourier transform spectroscopy(DRIFT) was used to study the reactivity in the interface between matrix and reinforcement. In addition, scanning electron microscopy(SEM) was used for the morphological study on the interface between reinforcement and matrix.
유기 복합 건축재에 적용하기 위하여 불포화 폴리에스테르/알루미나 복합내료에 기계적 물성 및 접착성이 좋은 polyvinyl alcohol(PVA) 섬유를 도입한 섬유 강화 복합재료를 제조하여 기계적 물성을 고찰하였다. 표면처리용 실란 카플링제인 γ-methacryloxypropyltrimethoxy silane(γ-MPS)으로 충전제 및 강화재 표면을 처리하여 실란 카플링제의 농도 변화에 따른 폴리비닐 알콜 섬유 강화 복합재료의 기계적 물성을 추적하였다. 표면처리에 의한 복합재료의 굴곡물성은 실란 처리농도 0.6wt% 일 때 최대값을 보였다. 강화재와 매트릭스 수지 계면에서의 반응성을 조사하기 위해 diffuse reflectance infrared fourier transform spectroscopy(DRIFT) 방법을 이용하였으며, 이로부터 강화재/매트릭스 계면 반응에 의한 접착력 증진이 기계적 물성에 미치는 영향을 함께 고찰하여다. 이와 병행하여 여러가지 조건하에서 충전제와 강화재의 표면을 처리한 복합재료의 형태학적 고찰을 주사전자 현미경을 이용하여 시도하였다.
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