Characterizing Liquid Resin Penetration In Wood Using A Mercury Intrusion Porosimeter

Authors

  • Weiqiu Wang
  • Ning Yan

Keywords:

Mercury intrusion porosimeter (MIP), pore structure, pore volume change, resin penetration, curing condition

Abstract

A method has been developed to characterize resin penetration by measuring the change in the pore size distribution and porosity of samples with and without resin using a mercury intrusion porosimeter. The method was used to study the liquid phenol-formaldehyde resin penetration in birch and aspen veneer samples as a function of different curing conditions. For both the birch and aspen samples, the liquid PF resin was found to penetrate mostly into the bigger pores (diameter ≥ 40 μm for birch/LPF and diameter ≥ 10 μm for aspen/LPF) for specimens cured in the oven. Resin penetrated into the smaller pores under the influence of pressure when cured in a hot-press, especially when the specimens were cured at face location in the hot-press. Under all curing conditions, some resin only partially filled some pores and resulted in an increase in pores of smaller sizes.

References

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Published

2007-06-05

Issue

Number 3 / July 2005

Section

Research Contributions

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