选择性激光烧结聚酰胺12/聚苯乙烯制件质量研究  

Study on Quality of PA12/PS Parts Prepared by Selective Laser Sintering Technology

作　　者：赵松[1] 

机构地区：[1]西京学院机电技术系,陕西西安710123

出　　处：《塑料科技》2017年第10期48-51,共4页Plastics Science and Technology

基　　金：西京学院科研基金项目(XJ150215)

摘　　要：首先利用DSC分别分析了聚酰胺12(PA12)和聚苯乙烯(PS)的热性能,然后将PA12及PS粉末按不同比例混合,再采用选择性激光烧结技术(SLS)制成PA12/PS制件,研究了PA12与PS的配比对制件尺寸精度、弯曲强度、拉伸强度和微观形貌的影响。结果表明:PA12的熔融温度约为180℃,PS的玻璃化转变温度约为110℃;制件的X向尺寸精度最高,Y向次之,Z向最低;当PS含量为40%时,PA12/PS制件的尺寸稳定性最好;当PS含量为20%时,PA12/PS制件的弯曲强度和拉伸强度比PA12制件分别提高了7.99%和11.42%,且各方向上的尺寸精度均比PA12制件有所改善。The thermal properties of polyamide 12（PA12） and polystyrene（PS） were analyzed by using DSC. Then the powders of PA12 and PS were mixed in different proportion, and the PA12/PS parts were prepared by selective laser sintering technology（SLS）. The effects of the ratio of PA12 to PS on dimensional accuracy, bending strength, tensile strength and microstructure of the PA12/PS parts were studied. The results show that the melting temperature of PA12 is about 180℃, the glass transition temperature of PS is about 110℃. The X direction of the parts has the highest dimensional precision, the Y direction followed, and Z direction worst. When PS content is 40%, the dimensional stability of PA12/PS parts is best. When PS content is 20%, the bending strength and tensile strength of the parts are increased by 7.99% and 11.42%, respectively in comparison with the PA12 parts, and the dimensional precision is also improved.

关 键 词：聚酰胺12 聚苯乙烯 选择性激光烧结 尺寸精度 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]