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난방에너지 절감을 위한 개질 그라파이트 적용 강화마루용 목질보드의 열전도율 향상
박윤(Yoon Park),전병완(Byoungwan Jun),서정기(Jungki Seo),김수민(Sumin Kim) 한국생활환경학회 2011 한국생활환경학회지 Vol.18 No.6
In recent years, the researches on low energy building materials are very active with growing interests on eco friendly building. In wooden flooring sector, there are also strong interests in improving the thermal conductivity of the under floor heating system. In order to improve the thermal conductivity in laminate flooring, we have achieved a positive result by adding the exfoliated graphite into the floor base materials (HDF, High Density Fiberboard). By adding 0.6~4% of graphite into the HDF, we can improve the thermal conductivity, but the internal bond of the HDF was reduced up to 60% in relation to the quantity of graphite added. Moreover, to improve IB (Internal Bonding), we tried to increase the resin content and press time, but there is no improvement. However, we have noticed that the IB was improved to the required level when melamine content was increased from 12% to 20%. Since the graphite makes IB reduce and the HDF color be darker, it is practical to reduce the graphite down to 0.6% and to increase melamine the content up to 20% to get 8.3% of improvement the thermal conductivity.