Optimization of processing variables in wood–rubber composite panel manufacturing technology

The feasibility of manufacturing wood–rubber functional composite panels with a polymeric methylene diphenyl diisocyanate (PMDI) and urea-formaldehyde (UF) combination binder system was investigated. Mechanisms of interacted independent variables (board density, pressing time and pressing temperatur...

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Bibliographic Details
Published in:Bioresource technology 2008-05, Vol.99 (7), p.2384-2391
Main Authors: Jun, Zhao, Xiang-ming, Wang, Jian-min, Chang, Kai, Zheng
Format: Article
Language:English
Subjects:
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Manufactured Materials
PMDI/UF resin
Processing optimization
Rubber
Temperature
Wood
Wood–rubber composite
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Summary:The feasibility of manufacturing wood–rubber functional composite panels with a polymeric methylene diphenyl diisocyanate (PMDI) and urea-formaldehyde (UF) combination binder system was investigated. Mechanisms of interacted independent variables (board density, pressing time and pressing temperature) for effect on board properties were opened out. The board performance was evaluated by measuring internal bond (IB) strength, modulus of rupture (MOR) and modulus of elasticity (MOE). The test results were statistically analyzed by using response surface method (RSM) of Design-Expert software to determine the significant independent variables that influenced board properties. A mathematical simulation or response surface models were developed to predict the board properties (MOR, MOE and IB). The results showed that board density and some interactions between the experimental variables were significant factors that influenced board mechanical properties. The suggested optimal board manufacturing conditions were about 170 °C, for pressing temperature, 300 s for pressing time, and 1000 g cm −3 for board density.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2007.05.031