选区激光烧结聚苯乙烯/Al2O3纳米复合材料研究
Process Characteristics and Mechanical Properties of Selective Laser Sintering of Polystyrene/Al2O3 Nanocomposite
摘 要
在采用选区激光烧结法成功地制备出纳米粒子较均匀分散于基体中的聚苯乙烯/Al2O3纳米块体复合材料的基础上,通过实验观察和微观结构分析,着重就激光功率和扫描速度两种关键参数对烧结成形性的影响进行了研究,同时对相同工艺条件下的纳米复合材料与纯聚苯乙烯烧结件的力学性能进行了比较.结果表明:纳米复合材料的缺口冲击强度提高了20%~50%,其最大值达到10.1kJ/m2;而洛氏硬度值仅增加约5%.
选区激光烧结
烧结工艺
力学性能
polymer matrix nanocomposite
selective laser sintering
sinter process
mechanical property
Abstract
The bulk polystyrene/Al2O3 nanocomposites were successfully prepared by selective laser sintering (SLS) process.The SEM micrograph showed that the nano-sized Al2O3 particles were uniformly located within polystyrene matrix.The effect of process parameters,laser power and scan velocity,on the sintering behavior of the mixture powders was studied by means of experimental and microstructural investigations.The mechanical properties were compared between the sintered specimens from polystyrene/nano-Al2O3 mixed powder and pure polystyrene powder under the same process conditions.Notched impact strength of the nanocomposite parts showed 20%~50% higher than that of the pure polystyrene parts,the maximal value was found to be 10.1kJ/m2,but Rockwell hardness increased only 5%.
中图分类号 TQ325.2
所属栏目
基金项目 江西省材料科学与工程研究中心基金资助项目(ZX200301020)
收稿日期 2005/3/21
修改稿日期 2005/6/18
网络出版日期
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备注张坚(1961-),男,浙江绍兴人,教授,博士研究生.
引用该论文: ZHANG Jian,XU Zhi-feng,ZHENG Hai-zhong,HUANG Yin-hui. Process Characteristics and Mechanical Properties of Selective Laser Sintering of Polystyrene/Al2O3 Nanocomposite[J]. Materials for mechancial engineering, 2006, 30(2): 54～57
张坚,徐志锋,郑海忠,黄因慧. 选区激光烧结聚苯乙烯/Al2O3纳米复合材料研究[J]. 机械工程材料, 2006, 30(2): 54～57
被引情况:
【1】邓朝晖,刘健宁,邓虎, "选择性激光烧结纳米蒙脱土改性聚苯乙烯",机械工程材料 31, 47-50(2007)
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参考文献
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【3】Simchi A,Pohl H.Effects of laser sintering processing parameters on the microstructure and densification of iron powder[J].Materials and Engineering A,2003,359:119-128.
【4】张坚,徐志锋,郑海忠,等.选择性激光烧结法制备聚合物/Al2O3纳米复合块体材料[J].材料工程,2004,(5):36-39.
【5】Suman Das,Martin Wohlert.Producing metal parts with selective laser sintering/hot isostatic pressing[J].JOM,1998,50(12):17-20.
【6】Ho Henry Chung Hong,Cheung Wai Lam,Gibson Ian.Morphology and properties of selective laser sintered bisphenol a polycarbonate[J].Industrial and Engineering Chemistry Research,2003,42(9):1850-1862.
【7】Shi Y,Li Z,Sun H,et al.Effect of the properties of the polymer materials on the quality of selective laser sintering parts[J].Journal of Materials:Design and Applications,2004,218(3):247-252.
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