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Measurement of mechanical properties of multilayer waterborne coatings on wood by nanoindentation

  • Yan Wu EMAIL logo , Jiamin Wu , Siqun Wang EMAIL logo , Xinhao Feng , Hong Chen , Qinwen Tang and Haiqiao Zhang
Published/Copyright: May 24, 2019
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Holzforschung
From the journal Holzforschung Volume 73 Issue 9

Abstract

Waterborne coatings are widely used for environmental protection. However, they lead to many defects and lower the mechanical properties when applied to wood surfaces. To address this challenge, the effects of multilayer waterborne polycrylic coatings on the mechanical properties of southern pine cell walls were investigated by nanoindentation. The experimental results indicated that the coating layers significantly reduced the elastic modulus (Er) and hardness (H) values than the wood cell walls. The Er and H values measured along the coating layer thickness direction increased significantly as the distance of the indents to the wood surface decreased. Intact cell walls adjacent to or away from the coating layers had higher Er and H values than partial ones. This study will also be useful in helping to understand the bonding mechanism at the interface between coatings and wood cell walls.

Keywords: mechanical property; nanoindentation; waterborne coating; wood cell wall

Acknowledgments

We thank Mr. Chris Helton and Prof. David Harper in the Center for Renewable Carbon at University of Tennessee for their kind help with sample preparation and data analysis, respectively. And we appreciate Prof. Jilei Zhang at Mississippi State University for kindly helping us with the English language.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: The authors gratefully acknowledge the financial support of the project provided by Jiangsu Government Scholarship for Overseas Studies, USDA National Institute of Food and Agriculture (Hatch project 1012359), Postgraduate Research and Practice Innovation Program of Jiangsu Province (KYCX17-0828) and Huzhou city, Zhejiang province “Nan Taihu Lake elite plan” project ([2018] no. 2).

  3. Employment or leadership: None declared.

  4. Honorarium: None declared.

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Received: 2018-09-02
Accepted: 2019-03-29
Published Online: 2019-05-24
Published in Print: 2019-08-27

©2019 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Original Articles
  3. Evaluating timber quality in larger-diameter standing trees: rethinking the use of acoustic velocity
  4. The use of ultrasound velocity and damping for the detection of internal structural defects in standing trees of European beech and Norway spruce
  5. Three-dimensional grain angle measurement of softwood (Hinoki cypress) using near infrared spatially and spectrally resolved imaging (NIR-SSRI)
  6. Stress wave evaluation for predicting the properties of thermally modified wood using neuro-fuzzy and neural network modeling
  7. An innovative method for the chemical modification of Carpinus betulus wood: a methodology and approach study
  8. Effect of process variations of polycaprolactone modification on wood durability, dimensional stability and boron leaching
  9. Influence of Quercus petraea Liebl. wood structure on the permeation of oxygen through wine barrel staves
  10. Measurement of mechanical properties of multilayer waterborne coatings on wood by nanoindentation
  11. Effect of lignin-containing cellulose nanofibrils on the curing kinetics of polymeric diphenylmethane diisocyanate (PMDI) resin
https://doi.org/10.1515/hf-2018-0193
Keywords for this article
mechanical property; nanoindentation; waterborne coating; wood cell wall

Articles in the same Issue

  1. Frontmatter
  2. Original Articles
  3. Evaluating timber quality in larger-diameter standing trees: rethinking the use of acoustic velocity
  4. The use of ultrasound velocity and damping for the detection of internal structural defects in standing trees of European beech and Norway spruce
  5. Three-dimensional grain angle measurement of softwood (Hinoki cypress) using near infrared spatially and spectrally resolved imaging (NIR-SSRI)
  6. Stress wave evaluation for predicting the properties of thermally modified wood using neuro-fuzzy and neural network modeling
  7. An innovative method for the chemical modification of Carpinus betulus wood: a methodology and approach study
  8. Effect of process variations of polycaprolactone modification on wood durability, dimensional stability and boron leaching
  9. Influence of Quercus petraea Liebl. wood structure on the permeation of oxygen through wine barrel staves
  10. Measurement of mechanical properties of multilayer waterborne coatings on wood by nanoindentation
  11. Effect of lignin-containing cellulose nanofibrils on the curing kinetics of polymeric diphenylmethane diisocyanate (PMDI) resin
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