摘要
通过粉体喂料三维(3D)打印机研究了纯聚乳酸(PLA)材料在3D打印过程中打印温度以及填充密度对成型制品的影响;然后在PLA中加入不同比例的金属粉末并制备出混合物料颗粒,通过粉体喂料3D打印机打印成型试样制品,并进行力学性能测试。结果表明,金属粉末含量的增加会导致复合材料拉伸强度的降低;此外,金属粉末含量增加,复合材料的热导率会随之升高,而膨胀系数降低。
Effects of printing temperature and filling density on molded parts are studied by powder feed of poly （lactic acid） （PLA ） in 3D printing process. For preparation of the 3D printing materials, PLA wasmixed wth different amounts ofmetal powders foprocess, and the mechanical performance of the molded specimens were measured. Experimental results indicated that increase of contents of the metal po w d e r led to a decrease inof the composite materials. In addition, thermal conductivity of the composite material w a s improved wth an increase of the content of the metal p o w d e r s, but the material expansion coefficient was reduced. This study provides a solution for the deformation problems of large parts in the 3D printing process.
出处
《中国塑料》
CSCD
北大核心
2017年第10期78-82,共5页
China Plastics
关键词
三维打印
聚乳酸
金属粉末
黏度
填充密度
力学性能
three dimensional printing
polylactic acid
metal p o w d e r
viscosity
filing density
mechanical property
