Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Effect of Different Pressing Processes and Density on Dimensional Stability and Mechanical Properties of Bamboo Fiber-based Composites

  • Zhang, Ya-Hui (Key Lab Wood Science & Technology, State Forestry Administration, Research Institute of Wood Industry, Chinese Academy of Forestry) ;
  • Huang, Yu-Xiang (Key Lab Wood Science & Technology, State Forestry Administration, Research Institute of Wood Industry, Chinese Academy of Forestry) ;
  • Ma, Hong-Xia (Guangdong Academy of Forestry) ;
  • Yu, Wen-Ji (Key Lab Wood Science & Technology, State Forestry Administration, Research Institute of Wood Industry, Chinese Academy of Forestry) ;
  • Qi, Yue (Key Lab Wood Science & Technology, State Forestry Administration, Research Institute of Wood Industry, Chinese Academy of Forestry)
  • Received : 2018.02.01
  • Accepted : 2018.07.04
  • Published : 2018.07.25
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Abstract

In this study, the dimensional stability and mechanical properties of bamboo fiber-based composites (BFBCs) were studied at two pressing manufacturing processes, i.e., hot- and cold- pressing, and were compared with three density parameters (1.0, 1.1, and $1.2kg/m^3$). Width swelling ratio (WSR), thickness swelling ratio (TSR), and water absorption ratio (WAR) were calculated for water immersions of 4 and 28 h. WSR, TSR, and WAR for specimens immersed for 28 h were higher than those for 4 h treatment, which shows that the immersion time has a significant influence on the dimensional stabilities of BFBCs. Moreover, the positive linear relations between density and dimensional were observed at both the pressing ways, indicating that the WSR, TSR, and WAR decreased with an increase in the density of BFBCs. The compressive strength, shear strength, modulus of rupture (MOR), and modulus of elasticity (MOE) were determined. The compressive strength, MOR, and MOE of hot-pressed specimens were significantly higher than those for the cold-pressed specimens, which are also directly proportional to density. Moreover, the samples with the highest density of $1.2kg/m^3$ performed high values on mechanical properties in both the manufacturing methods.

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References

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