Hashemi, M. (2014) Manufacture of particleboard by using combination adhesives from corn flour/black liquor. Masters thesis, university of zabol.
|
Text
Manufacture of particleboard by using combination.pdf Download (93kB) | Preview |
Abstract
he purpose of this study, was improve the internal bonding of particleboard produced by natural adhesive of cornflour / black liquor. The variable factors in this study, were the ratio of cornflour to the black liquor at three levels in 40:60, 45:55, 50:50 and press pressure at three levels in 10, 15, 20 kg/cm2. In performing this study of Eremorus, Hegzamyn and Nitric acid, were used as additives. For making the adhesive, Corn flour with boiling water were mixed and then for increasing the bonding properties of Corn flour mixture we added the NaOH 33%, to reducing theviscosity of this mixture and for increasing the adhesion properties, we added the black liquor with the certain ratio to the mixture. Then the wood chips cake containing adhesive-made was pressed at 200° C temperature and in 10 minutes pressing time. After preparation of adhesives, wood chips manually, mixed with an adhesive, uniformly and then wood cake was formed manually,and boards made with name of green board which havent formaldehyde emision and then the wood chipscake was pressed at 200° C temperature and in 10 minutes pressing time. With aim of decreas the final cost of particleboard panels made with synthetic resins we mixed corn flour to synthetic resins (MF,UF,MUF وPF) with various ratios.Internal bonding of this boards were measured according to the EN standard (310, 317, and 319). The results showed that the boards made with this adhesives have a good mechanical strength, so that in corn flour/ black liquor adhesive, the rate of 45% corn flour with 15 kg/cm2 press pressure showed the best performance. And in combination adhesive by synthetic resins, for obtain high mechanical properties comparable to the particleboards made from 100% synthetic resins according to the European Norm, the best formulation was 30% corn flour and 70% MF with 20 kg/cm2 press pressure and 10 minutes. Due to the created properties can be said that the cornflour / black liquor adhesive have a high potential for replacing the synthetic resins.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Cornflour, Black liquor, Natural adhesive, Particleboard, Internal bonding. |
| Subjects: | T Technology > TS Manufactures |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 21 May 2017 09:31 |
| Last Modified: | 21 May 2017 09:31 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/1345 |
Actions (login required)
 |
View Item |
