竹塑复合粉末激光烧结件在熔模铸造中的应用

Selected laser sintering characteristics of bamboo/plastic composite powders and application in investment casting

选用竹粉作为植物纤维粉末,研究竹粉与热塑性树脂热粘结理论。选择合适的热熔胶粉末,分析了竹粉颗粒与热塑性树脂热作用结合机理;竹粉与热塑性树脂粉末混合后,研究了竹粉/热塑性树脂复合粉末的激光烧结特性、SLS成型件的平均力学性能。利用竹粉和热塑性树脂粉末混合物制造复杂零件的熔模铸造件,研究了熔模铸造工艺和SLS成形件、渗蜡件和铸件的尺寸精度传递特性。

With the bamboo powder as a typical plant fiber powder, this paper studies the thermal bonding theory for the bamboo powder and the thermoplastic resin. With the appropriate hot melt adhesive powder, a theoretical analysis of the thermal effect of the thermoplastic resin bonding mechanism is made for the bamboo powder particles. The experimental study of the laser sintering characteristics of bamboo powder/thermoplastic resin composite powder is made for the bamboo powder mixed with the thermoplastic resin powder, focusing on the average mechanical properties of the SLS parts. The mixture of the bamboo powder and the thermoplastic resin powder is used to manufacture complex casting parts and SLS forming member. The infiltration wax casting dimensional accuracy of parts and transfer characteristics are studied.