Solid‐phase preparation of ultra‐fine PA6 powder through pan‐milling
Solid‐phase preparation of ultra‐fine PA6 powder through pan‐milling
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DOI：
10.1002/pen.10820
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发表时间：
2001-07
影响因子：
3.2
通讯作者：
Zhe Chen;Changsheng Liu;Qi Wang
中科院分区：
文献类型：
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作者：
Zhe Chen;Changsheng Liu;Qi Wang
采用自行研制的盘式粉碎设备对工程塑料聚酰胺6（PA 6）进行了有效的超细粉碎。采用激光粒度分析仪和透射电镜对PA 6粉末的粒度及其分布进行了研究。结果表明，经15次球磨后，PA 6的平均粒径才降至微米级，30次球磨后，PA 6的平均粒径达到50-80 nm。磨盘碾磨降低了PA 6的结晶度，但不影响其晶型。PA 6的分子量和力学性能在球磨过程中略有下降。通过调节球磨时间、温度和磨盘转速等工艺条件，可以控制PA 6粉体的平均粒径。
The engineering plastic polyamide 6 (PA6) was effectively pulverized to ultra-fine powder through a self-made pan-type milling equipment. A laser Diffraction Particle Size Analyzer and TEM were used to examine the particle size and the distribution of PA6 powder. The results show that the average particle size of PA6 was reduced to micrometer scale only after 15 milling-cycles and reached 50-80 nm after 30 milling-cycles. Pan milling decreased crystallinity of PA6 but did not affect its crystal type. Molecular weight and mechanical properties of PA6 dropped slightly during pan milling. The average particle size of PA6 powder could be controlled by adjusting processing conditions including milling time, temperature and the rotating speed of the milling pan.