松木粉聚醚砜树脂复合材料的选择性激光烧结成型工艺参数优化

用松木粉、聚醚砜树脂粉末按照1∶4的质量比,制备松木粉聚醚砜树脂复合材料;用HRPS-ⅢA型快速成形机,选择性激光烧结加工木塑制件试验;用差示扫描量热仪、傅里叶变换红外光谱仪、扫描电镜,对复合材料的热性能、微观组织结构进行表征。结果表明:当激光功率为8.8 W、扫描速率为1 800 mm/s、烧结间距为0.1mm、单层厚度为0.1 mm时,木塑复合材料的力学性能达到最优值。

Selective Laser Sintering of Pine/polyethersulfone (PES) Wood-plastic Composite and Its Process Parameters op-timization

Pine/polyethersulfone ( PES) wood-plastic composite was prepared in the mass ratio of 1 ∶4.The experiments of wood-plastic parts were performed by selective laser sintering using the HRPS-ⅢA rapid prototyping machine.The thermal performance and microstructure of composite were characterized by differential scanning calorimeter ( DSC) , fourier trans-form infrared spectrometer ( FTIR) and scanning electron microscopy ( SEM) .The mechanical properties of sintered parts were improved by optimizing process parameters by Minitab software.The mechanical properties of wood plastic composite reached the optimal value under laser power of 8.8 w, scanning speed of 1 800 mm/s, sintered spacing of 0.1 mm, and the layer thickness of 0.1 mm, respectively.