Factors Affecting Particleboard Pressing Time:Interaction with Catalyst Systems.

摘要

In laboratory manufacture of particleboards,use of catalyst,high press temperature,fast closing,and nonuniform mat moisture content produced adequate 1/2-inch-thick,urea-bonded panels in 1minute and phenolic-bonded panels in 2minutes presstime. The use of a catalyst allows the reduction of presstime by approximately 1minute for urea-formaldehyde resin systems,but no reduction was obtained with catalyzed phenol-formaldehyde systems. (Author)