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Journal of the Korean Ceramic Society 1997;34(10): 1037. |
Polyurethane 첨가에 의한 HAC/PVA계 MDF 시멘트 복합재료의 수분안정성 영향 |
박춘근, 김태진, 김병권, 엄태형, 노준석1, 최상흘1 |
쌍용중앙연구소 1한양대학교 무기재료공학과 |
The Effects of Polyurethane Resin on the Water Stability of HAC/PVA Based MDF Cement Composites |
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ABSTRACT |
Mechanical properties and water stability of HAC/PVA based MDF cement composite were investigated using polyurethane(PU) resin, silane coupling agent and various PVA. The results were as follows ; The flexural strength of MDF cement composite increased as increasing with PVA content. Low-viscosity PVA developed higher flexural strength than high-viscosity PVA under a drying curing condition. But the strength of water immersed specimen decreased. Water stability of MDF cement improved as increasing with content of PU. Consequently, water stability of polyurethane 7% added MDF cement was about 2 times higher than that of the controlled specimen. Furthermore, the strength and water stability of diamine group based silane couling agent in using MDF cement increased and improved dramatically. |
Key words:
MDF cement, Cement composite, Water stability, Polyurethane resin |
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