Waterborne polyvinyl acetate adhesives have the same base latex resin that is used in wood glues. These adhesives provide a low to medium performance, inexpensive adhesive that dries to a relatively rigid material. A typical formulation consists of polyvinyl acetate latex, filler, plasticizer (for improved flexibility), and water. Since these adhesives set by evaporation, they shrink on drying more than 100% solids adhesives.
RESULTING PROPERTIES
The low viscosity of the PVAc water emulsion and its fast setting capability provide an excellent adhesive for woodworking. The table above provides a formulation for a polyvinyl acetate adhesive that is used to apply Parquet wood flooring. The latex adhesive dries to a somewhat rubbery film by virtue of the plasticizer component. The adhesive has good resistance to water and good adhesion to most substrates.
