Skip to main content
SpringerLink
Log in

Efficacy of polymeric MDI/Polyol mixtures for binding wood boards

  • Original
  • Published:
Wood Science and Technology Aims and scope Submit manuscript

Abstract

Components of polyurethane synthesis are tested for their ability to bind pine wood into boards and are compared to the efficiency of using only the isocyanate component of polyurethane synthesis. A variety of polyols are tested varying equivalent weight, functionality, reactivity as determined by the availability of primary hydroxyl endgroups, and viscosity. The boards are fabricated at a variety of densities and under a variety of conditions. The results show that board properties using only the isocyanate component are always superior to those including a polyol component, but the board properties are not always a simple function of the amount of isocyanate put in the board. Furthermore, it is observed that the lower the room temperature surface tension between the polyol and isocyanate, the better the measured board properties; but, the higher the observed surface tension, the better the board will self-release from the metal caul plates.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2

Similar content being viewed by others

References

  • American society for testing materials ASTM (1999) Standard method for evaluating the properties of woodbase fiber and panel materials. ASTM D 1037–99, Philadelphia

  • Bras W, Derbyshire GE, Bogg D, Cooke J, Elwell MJ, Komanschek BU, Naylor S, Ryan AJ (1995) Simultaneous studies of reaction kinetics and structure development in polymer processing. Science 267:996–999

    CAS  Google Scholar 

  • Chapman F (1951) Synthetic resin adhesives in adhesion and adhesives. In: De Bruyne N, Howink R (eds) Elsevier, New York

  • Elwell M, Ryan AA, Grunbauer H, Van Lieshout H, Lidy W (1995) Structure development via FTIR spectroscopy, synchrotron SAXS and rheology during the reactive processing of flexible polyurethane foam. Plast Rub Compos Pro 23:265–276

    CAS  Google Scholar 

  • Farrisey WJ, McLaughlin A, Waseciak D (1983) Process for preparing particleboard. US Patent 4,374,791

  • Gallagher JA (1978) Binder composition and process for preparing pressure molded cellulosic articles. US Patent 4,100,328

  • Gallagher JA (1982) Urethane bonded particleboard. Forest Prod J 32(4):26–33

    CAS  Google Scholar 

  • Kwei TK, Wang TT (1978) Phase separation behavior of polymer–polymer mixtures. In: Paul D, Newman S (eds) Polymer blends, vol 1. Academic, San Diego

  • Kurt E, Haberland S (1968) French Patent 1,522,491

  • Maloney T (1993) Modern particleboard and manufacturing. Miller Freeman, San Francisco

    Google Scholar 

  • Marcinko JJ, Newman WH, Phanopoulos C (1996) The nature of the MDI/wood bond. Conference paper WD-516 ICI polyurethanes, West Deptford

  • Marcinko J, Robertson (1996) Self releasing binder system. US Patent 5,554,438

  • Martin DJ, Mejis GF, Gunatillake PA, McCarthy SJ, Renwick GM (1997) The effect of average soft segment length on morphology and properties of a series of polyurethane elastomers. II. SAXS-DSC annealing study. J Appl Polym Sci 64:803–809

    CAS  Google Scholar 

  • Plumridge PH, Vale WH (1975) Bonding wood waste with castor oil and polyisocyanates. Australian Patent 488,764

    Google Scholar 

  • Pocius A (1997) Adhesion and adhesives technology. Hanser, Munich

    Google Scholar 

  • Saunders K (1988) Organic polymer chemistry, 2nd edn. Chapman and Hall, London

    Google Scholar 

  • Scholl H-J, Sachs HI, Loew G (1984) Self-releasing binder based on isocyanate and the use thereof in a process for the production of molded articles. US Patent 4,478,738

  • Sonnenschein MF, Cheatham CM (2002) Effect of interfacial energetics on the protection of steel and aluminum surfaces by alkyl acid coatings. Langmuir 18:3578–3584

    CAS  Google Scholar 

  • Sonnenschein MF, Rondan N, Wendt BL, Cox JM (2004) Synthesis of transparent thermoplastic polyurethane elastomers. J Polym Sci Chem Ed 42:271–278

    CAS  Google Scholar 

  • Wake W (1976) Adhesion and the formulation of adhesives. Applied Science, London

    Google Scholar 

  • Wegner TH (1989) Wood. In: Mark HF, Bikales NM, Overberger CG, Menges G (eds) Encyclopedia of polymer science and engineering, vol 17. Wiley, New York

  • Wendler SL, Frazier CE (1996) The effects of cure temperature and time on the isocyanate-wood adhesive bondline by 15N CP/MAS NMR. Int J Adhes Adhesives 16:179–186

    CAS  Google Scholar 

  • Zhou X, Frazier CE (2001) Double labeled isocyanate resins for the solid state NMR detection of urethane linkages to wood. Int J Adhes Adhesives 21:259–264

    CAS  Google Scholar 

Download references

Acknowledgements

The authors would like to thank Dr. Doug Brune for a thorough review of this paper. We would also like to thank Dr. R. Prather for helpful conversations during the course of this work. The Dow Chemical Co. is thanked for its support.

Author information

Authors and Affiliations

  1. Corporate Research and Development, Dow Chemical Company, Building 1702, Midland, MI, 48674, USA

    Mark F. Sonnenschein & Benjamin L. Wendt

Authors
  1. Mark F. Sonnenschein
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Benjamin L. Wendt
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Mark F. Sonnenschein.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Sonnenschein, M.F., Wendt, B.L. Efficacy of polymeric MDI/Polyol mixtures for binding wood boards. Wood Sci Technol 39, 27–35 (2005). https://doi.org/10.1007/s00226-004-0266-0

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00226-004-0266-0

Keywords

Search

Navigation