4. Conclusion
The surface bonding strength of the CF/PVAc resins was higher
than that of the CF resin. The bonding strength was maximized
for the CF/PVAc resin with a PVAc content of 20%. By desicca-tor method, the formaldehyde emission, which presented similar
emission data for the CF and CF/PVAc resins, was lowered with
the PVAc addition, and further reduced when coated with a UV-curable urethane acrylate. The formaldehyde emission level was
sufficiently reduced to satisfy theE0 grade of the Korean Stan-dard. In the case of the CF/PVAc resin, the VOC emission measured
by the VOC analyzer was slightly increased by the PVAc addi-tion. In conclusion, the CF/PVAc resins were successfully applied
as environmentally friendly adhesives of surface bonding for man-ufacturing engineered flooring