Thermal Conductivity of Hemp Based Boards

Authors

  • Edgars Kirilovs Riga Technical University (LV)
  • Silvija Kukle Riga Technical University (LV)
  • Dana Beļakova Riga Technical University (LV)
  • Anatolijs Borodiņecs Riga Technical University (LV)
  • Ādolfs Ruciņš Research Institute of Agricultural Machinery (LV)
  • Veneranda Stramkale Agriculture Science Center of Latgale (LV)

DOI:

https://doi.org/10.17770/etr2015vol1.206

Keywords:

Hemp stems, insulation materials, particle boards, thermal conductivity

Abstract

Energy and raw material costs, an increase in environmental pollution, greenhouse gas emissions, global warming, depletion of fossil raw materials stimulate to seek and study alternatives to the synthetic fibers and products made of them for full or partial replacement. Renewable raw materials, including natural fiber sources, are the future of storage resources with a variety of positive effects on both the planet ecosystem and the living and working environment, and the energy consumption of delivering the required functionality. One of the most important energy-saving types is to reduce energy consumption in buildings by insulating them.

For Latvian conditions suitable crops are historically grown flax and hemp. Within the framework of the studies, hemp stems are being used. Hemp compared with flax, are less suffering from diseases and less damaged by pests, so hemp cultivation is practically free from use of chemical pesticides and herbicides reducing the risk to the ecosystem.

One of the most frequently mentioned industrial hemp raw materials positive qualities are their very wide use, practically all plant parts can be used in production of different products. This work explores the possibilities and technologies within the Latvian grown hemp stems to work into board materials with insulation capability.

Hemp fibers/shives mix boards can fulfill the main function of insulation materials, i.e., to reduce the transmission of heat, because they have a porous structure and low density. Material thermal insulation properties affect physical and structural properties of compounds. Cost effective particles board samples from chopped hemp stems with three types of adhesives and different thicknesses were produced and their thermal conductivity evaluated. The technologies applied and test results will be discussed in the paper. 

Downloads

Download data is not yet available.

References

Pecenka R., Furll C., Radosavljevic L. Processing of Wet Preserved Hemp to Fibre Boards in a Pilot Plant. Saskatoon, : SaskFlax, 2008. p. 75- 80. ISBN 978-0-9809664-0-4.

Idler C., Pecenka R. Ensiling- a new practice for preservation of hemp. Gauta Instituto, 2007. p. 40-48. Vol. 39. ISSN 1392-1134.

Idler C., u.c., Wet Processing of Hemp: An Overview. London : Taylor & Francis, 2011. p. 59-80. Vol. 8. ISSN 1544-0478.

Kirilovs E., Gusovius H-J., Kukle S. Inovative MDF board material for furniture from hemp. Zadar : University of Zagreb Faculty of Textile Technology, 2012. p. 1641-1646. ISBN 978-953-7105-47-1.

Kirilovs E., Kukle S., Gusovius H-J., „ Wet-preserved hemp fibreboard properties improvement with veneering” Submitted for publication in conference: 4TH International advances in applied physic and materials science congress & exhibition, Oludeniz, Turkey, April 23-27, 2014

ISO 8301:1991. Thermal insulation; Determination of steady-state thermal resistance and related properties; Heat flow meter apparatus.

Atta-Obeng E. Characterization of Phenol Formaldehyde Adhesive and Adhesive-Wood Particle Composites Reinforced with Microcrystalline Cellulose // Doctoral Thesis. - Auburn : Auburn University, 2011.

Нуч В. Деревообработка. - Mосковa: Техносфера, 2008. стр. 129-143. ISBN: 978-5-94836-139-0

Conner H. Urea-formaldehyde adhesive resins. [book author] Salamone J-C. Polymeric materials encyclopedia. USA : CRC Press, 1996, p. 8497-8501.

Gierenz G.,Karmann W. Adhesives and Adhesives tapes. - Germany : Wiley-vch Verlag GmbH, 2001. p. 58-64. ISBN 3-527-30110-0.

Pizzi A., Mittal K.L. Handbook of Adhesive technology. - New York : CRC Press; 2 edition, 2003. ISBN 1-40-8247-0986-1.

Kirilovs E. Efficient Use of Annually Renewable Raw Materials for Production of Fiber Boards and Composites. Latvia : Institute of design technology, Department of material technology and design, 2013. Doctoral Thesis.

Freivalde L. Technology Impact on Hemp Fiber Insulation Material Properties. Latvia : Institute of design technology, Department of material technology and design, 2014. Doctoral Thesis.

Thermal Conductivity of some common Materials. [Online] Available from http://www.engineeringtooņepju lbox.com.

Downloads

Published

2015-06-16

How to Cite

[1]
E. Kirilovs, S. Kukle, D. Beļakova, A. Borodiņecs, Ādolfs Ruciņš, and V. Stramkale, “Thermal Conductivity of Hemp Based Boards”, ETR, vol. 1, pp. 61–66, Jun. 2015, doi: 10.17770/etr2015vol1.206.