摘要
The mechanical properties of wood powder/polypropy!ene composites with different wood particle sizes and wood species have been studied. All of the wood particie sizes increased the E-modulus of the composites. Tensile tests showed that wood partide sizes had a negative effect on the elongation at break and the tensile strength of the composites has been improved when wood particle sizes were be(ow 150 μm (below 100 mesh). For the impact tests, the wood partide sizes had a negative effect, but the MDF f...
The mechanical properties of wood powder/polypropylene composites with different wood particle sizes and wood species have been studied, All of the wood particle sizes increased the E-modulus of the composites. Tensile tests showed that wood particle sizes had a negative effect on the elongation at break and the tensile strength of the composites has been improved when wood particle sizes were below 150μm (below 100 mesh). For the impact tests, the wood particle sizes had a negative effect, but the MDF fiber can increase the Izod impac (notched) strength. The flexural strength was improved for all wood particle sizes except the MDF fiber has slightly been decreased. At the same particle size, Chinese Fir has higher tensile strength, E-modulus and flexural strength than Poplar. The mechanical properties of the composites were increased at law temperature condition for all wood particle sizes.
