Wood glue

Wood glue is an adhesive used to tightly bond pieces of wood together. Many substances have been used as glues.[1][2][3]

Types

Usage

Several wood glues have poor "gap-filling" ability, meaning they either soak into the wood and leave the gap empty, or remain to fill the gap but have little structural integrity. Therefore, woodworkers commonly use tight-fitting joints that need surprisingly little glue to hold large pieces of wood. Most wood glues need to be clamped while the glue sets.[2] Epoxy resins and some other glues can be thickened with structural fillers (or with thicker formulations of the resin) to help fill gaps, however it is preferable to try to minimize gaps in the first place.

Mechanical resistance

Fine Woodworking magazine ran a number of tests to evaluate the mechanical resistance of wood joints with different glues:[13]

Glue JOINT STRENGTH AS % OF TYPE I PVA GLUE Average strength (kilograms)
Type I PVA glue (Waterproof) 100% 918
Slow-set epoxy 99% 904
PVA glue 95% 873
Liquid hide glue 79% 723
Hot hide glue 76% 694
Polyurethane 58% 528

See also

References

  1. Spielman, Patrick (1986). Gluing and Clamping: A Woodworker's Handbook. Sterling Publishing Company. ISBN 978-0-8069-6274-0.
  2. 1 2 Vick, Charles B. (2007). "Ch 9 Adhesive Bonding of Wood Materials". In U S Dept of Agriculture. The Encyclopedia of Wood (PDF). Skyhorse Publishing Inc. p. 9-1. ISBN 978-1-60239-057-7.
  3. "Lowe's Home Improvement: Appliances, Tools, Hardware, Paint, Flooring". lowes.com.
  4. 1 2 3 "AC 43.13-1B CHG 1 [Large AC. This includes Change 1.] Acceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair". faa.gov.
  5. Conner, Anthony H. (1996). "Urea-Formaldehyde Adhesive Resins". In Salamone, Joseph C. Polymeric Materials Encyclopedia (PDF). CRC Pres. ISBN 0-8493-2470-X.
  6. Marks, David J. (September–October 2007). "Working with Urea Formaldehyde Glues". Woodworker West. Archived from the original on 2011-07-10.
  7. 1 2 3 "Are Your Glue Joints Repairable?". sawmillcreek.org.
  8. DAP Technical Bulletin, DAP® Weldwood Waterproof Resorcinol Glue, retrieved 2009-10-31
  9. Ren, Dakai; Frazier, Charles E. (2012). "Wood/adhesive interactions and the phase morphology of moisture-cure polyurethane wood adhesives". International Journal of Adhesion and Adhesives 34: 55–61. doi:10.1016/j.ijadhadh.2011.12.009. ISSN 0143-7496.
  10. Vick, C. B.; Okkonen, E. A (Nov–Dec 1998). "Strength and durability of one-part polyurethane adhesive bonds to wood". Forest products journal 48 (11/12): 71–76.
  11. "Bonding with Epoxy in Wood Construction", Gurit, retrieved 2009-11-03 Archived July 11, 2011, at the Wayback Machine.
  12. Larry Pardey, "Superior Adhesives for the Millennium", retrieved 2009-11-08 Archived July 8, 2011, at the Wayback Machine.
  13. Reference Fine Woodworking, August 2007, N° 192
This article is issued from Wikipedia - version of the Tuesday, April 05, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.