Enhancement of the thermal conductivity of adhesives for wood flooring using xGnP

Abstract Using exfoliated graphite nanoplatelets (xGnP), resin/xGnP composites were prepared by stirring xGnP in the epoxy resin with hardener and polyurethane(PU) resin to increase the thermal conductivity of an under-floor heating system using wood flooring. xGnP of 1, 2 and 3 wt% was added to pure epoxy and PU resin at room temperature. The thermal conductivity of resin/xGnP composites was increased with the increased with the increase of xGnP loading contents. Also, the increased bonding strength of epoxy/xGnP composite was manifested in the results of a single lap shearing test. Harden resin/xGnP composites showed endothermic energy curves according to thermal conductivity by differential scanning calorimeter (DSC) measurement. Resin/xGnP composites showed higher thermal conductivity than pure resins and absorbed less energy than pure resins with increasing temperature. Applying xGnP to the installation resin of wood flooring cannot only be effective in increasing the thermal conductivity of installation resin but is also inexpensive, has easy dispersion and good mechanical properties.

[1]  Chen-Chi M. Ma,et al.  Synergetic effects of graphene platelets and carbon nanotubes on the mechanical and thermal properties of epoxy composites , 2011 .

[2]  M. Xiao,et al.  Preparation and properties of electrically conductive PPS/expanded graphite nanocomposites , 2007 .

[3]  F. Kang,et al.  Influences of H2O2 on synthesis of H2SO4-GICs , 1996 .

[4]  Tamami Kawasaki,et al.  Thermal insulation properties of wood-based sandwich panel for use as structural insulated walls and floors , 2006, Journal of Wood Science.

[5]  L. Drzal,et al.  Multifunctional polypropylene composites produced by incorporation of exfoliated graphite nanoplatelets , 2007 .

[6]  Ho-Young Kwak,et al.  Economic optimization of a cogeneration system for apartment houses in Korea , 2008 .

[7]  Sumin Kim,et al.  Environment-friendly adhesives for surface bonding of wood-based flooring using natural tannin to reduce formaldehyde and TVOC emission. , 2009, Bioresource technology.

[8]  B. M. Suleiman,et al.  Thermal conductivity and diffusivity of wood , 1999, Wood Science and Technology.

[9]  Jungki Seo,et al.  Thermal performance analysis according to wood flooring structure for energy conservation in radiant floor heating systems , 2011 .

[10]  Myoung-Souk Yeo,et al.  Comparison of strategies to improve indoor air quality at the pre-occupancy stage in new apartment buildings , 2008 .

[11]  Jonathan L. Bauer,et al.  Characterization of Epoxy Functionalized Graphite Nanoparticles and the Physical Properties of Epoxy Matrix Nanocomposites , 2010 .

[12]  L. Drzal,et al.  Multifunctional xGnP/LLDPE Nanocomposites Prepared by Solution Compounding Using Various Screw Rotating Systems , 2009 .

[13]  Antoni W. Morawski,et al.  Preparation of exfoliated graphite by microwave irradiation , 2005 .

[14]  A. Morawski,et al.  Trace analyses of gaseous products formed during heat treatment of high stage H2SO4-GICs and expanded graphite , 2004 .

[15]  Janghoo Seo,et al.  Emission behavior of formaldehyde and TVOC from engineered flooring in under heating and air circulation systems , 2010 .

[16]  Gook-Sup Song,et al.  Buttock responses to contact with finishing materials over the ONDOL floor heating system in Korea , 2005 .

[17]  K. Lafdi,et al.  Use of exfoliated graphite filler to enhance polymer physical properties , 2007 .

[18]  김광우,et al.  온돌(溫突)의 시대적(時代的) 변천(變遷)과 현황(現況) , 1995 .

[19]  L. Drzal,et al.  High latent heat storage and high thermal conductive phase change materials using exfoliated graphite nanoplatelets , 2009 .

[20]  David P. Anderson,et al.  Improved thermal conductivity for chemically functionalized exfoliated graphite/epoxy composites , 2008 .