TPU材料多孔结构SLS打印性能及应用研究  

Research on SLS Printing Properties and Application of Porous Structure of TPU Material

作　　者：陈锦锋 张李超[1] 张楠 杨飞凡 

机构地区：[1]华中科技大学材料科学与工程学院,湖北武汉430074

出　　处：《塑料科技》2017年第12期61-65,共5页Plastics Science and Technology

基　　金：国家"863"高技术研究发展计划(2015AA042505);广东省重大科技专项(2014B010130001)

摘　　要：研究了TPU材料进行SLS成形的激光加工工艺参数,获得了最佳参数,之后提出了一种用于选择性激光烧结(SLS)工艺成型的TPU材料多孔结构,同时探究了最佳工艺下打印出来的多孔结构的力学性能,确定其应用范围。首先,通过对TPU材料拉伸件成型效果和力学性能的研究,比较了不同参数下的实验结果,结果显示:加热温度、激光功率和层厚对材料性能有影响,其中加热温度影响粉末流动性进而直接影响实验成败,激光功率决定制件烧结成型程度,层厚决定制件成型精度;其次,在最佳工艺下完成多孔结构的打印和性能测试,进行压缩强度和回弹性研究,分析其压缩模量和回弹收缩比;最后,根据TPU材料多孔结构的打印参数和结构特征,完成验证并探究了其应用范围。The laser processing parameters of TPU for selective laser sintering（SLS） forming were studied, and the optimum parameters applied to TPU material were obtained, and then a porous structure of TPU material for SLS forming process was proposed. Firstly, the forming effect and mechanical properties of TPU stretch parts were studied, and the experimental results under different parameters were compared. The results show that： the laser power and heating temperature, thickness of material properties, the effect of heating temperature and powder flow directly affects the success or failure of the experiment, the laser power determines the degree of sintering forming parts, thickness of the forming precision of decision. Secondly, the printing and performance tests of porous structure were carried out under the optimum process. The compression strength and resilience were studied, and the compression modulus and rebound shrinkage ratio were analyzed. Finally, according to the printing parameters and structural characteristics of porous structure of TPU material, the application scope was verified and explored.

关 键 词：TPU材料 多孔结构 选择性激光烧结 力学性能 应用 

分 类 号：TQ334.1[化学工程—橡胶工业]