بررسي تعيين مناسب ترين شرايط استفاده از مخلوط سرشاخه هاي بادام و صنوبر در چسبندگي داخلي تخته خرده چوب

Investigation on optimization of using mixture of branch wood of amigdal and poplar on internal bond of particle board

In order to use lignocellulusic materials (non forest) grown in Iran , This study has been conducted on feasibility of using amygdal tree branches mixed with poplar particles for making particleboard. Urea-formaldeid was used as binder (10% based on oven dry wood ) and Ammonium coloride as catalizor.Among parameter affecting particleboard properties, three parameters were selected as dependet: Percentage of amygdale tree branches in mixture (0,15,30,45,100%) , Press pressure 4 Mpa and l0Mpa , and Press temperature 140 and 160.Other process parameter were kept constant. Three boards were made in each conditions cut from produced particleboards and tested. Results showed that increase Amygdale tree branches in mixture causes some decrease in internal bond .Optimized treatment was introduced as below percentage of amygdal tree branches in mixture (15-30%), Press presure l0Mpa and Press temperature 160 .