Use of solid waste lignin in the reinforcement of UF-R system

Abstract

Condensation polymerization at temperature 105ºC and PH range (7.5-8) was
used for the reaction between urea and formaldehyde to produce polymeric adhesive.
Different mass ratio (12-30)g *RD/g UF of resorcinol are used as bonding
catalyst ( an adhesion promoter) for UF-lignin solid waste fibers system as curing
binary system of adhesive for wood/wood laminate .
Mechanical properties such as impact strength, bending test have been measured
.The result shows that all these properties are increased when percentage of bonding
catalyst material is increased for adhesive-fiber system at different arrangement.
It was found that the improved sample **(R20c/UF) of resorcinol and woven
roving arrangement for solid waste lignin which appear for both impact and bending
test ( 11 J/cm , 0.7 mm ) respectively .
*RD different resorcinol
**R20 c sample (3) and woven roving, reinforcement