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材料研究学报  2009, Vol. 23 Issue (1): 103-107    
  研究论文 本期目录 | 过刊浏览 |
纳米二氧化硅增强尼龙12选择性激光烧结成形件
闫春泽; 史玉升; 杨劲松; 刘锦辉
华中科技大学材料成形与模具技术国家重点实验室 武汉 430074
Study on the reinforcement of nanosilica on the selective laser sintered nylon–12 parts
YAN Chunze ; SHI Yusheng;  YANG Jinsong;  LIU Jinhui
State Key Laboratory of Material Processing and Die & Mould Technology; Huazhong University of Science and Technology; Wuhan 430074
引用本文:

闫春泽 史玉升 杨劲松 刘锦辉. 纳米二氧化硅增强尼龙12选择性激光烧结成形件[J]. 材料研究学报, 2009, 23(1): 103-107.
, , , . Study on the reinforcement of nanosilica on the selective laser sintered nylon–12 parts[J]. Chin J Mater Res, 2009, 23(1): 103-107.

全文: PDF(830 KB)  
摘要: 

使用纳米二氧化硅增强尼龙12选择性激光烧结(SLS)成形件, 通过溶剂沉淀法制备SLS用纳米二氧化硅/尼龙12复合粉末材料, 研究了纳米二氧化硅对SLS成形件力学性能的影响. 结果表明: 纳米二氧化硅以纳米尺寸均匀分散在尼龙12基体中: 复合粉末的粒径比纯尼龙12的粉末小, 因而有利于提高烧结速率及成形件精度; 复合粉末比尼龙12的粉末具有更高的热稳定性; 复合粉末烧结件的拉伸强度、拉伸模量以及冲击强度比纯尼龙12烧结件分别提高了约20.9%、39.4%和9.5%, 说明纳米二氧化硅对尼龙12 SLS成形件的增强效果显著.

关键词 材料合成与加工工艺 选择性激光烧结尼龙12 纳米二氧化硅 溶剂沉淀法    
Abstract

Nanosilica was used to reinforce the selective laser sintering (SLS) parts of nylon–12, and a dissolution–precipitation process was successfully developed to prepare a nanosilica/nylon–12 composite powder (3% nanosilica) for SLS. The effect of nanosilica on the mechanical properties of the SLS parts was also investigated. The results show that nanosilica disperses uniformly on a nano–scale level in the nylon– 12 matrix; the composite powder has a smaller particle size than that of the neat nylon–12 powder, which helps to improve the sintering rate and part accuracy; the composite powder has much higher thermal stability than that of neat nylon–12; the tensile strength, tensile modulus and impact strength of the SLS specimens made from the composite powder are 20.9%, 39.4% and 9.54%, indicating that nanosilica has a remarkable reinforcement effect on nylon–12 SLS parts.

Key wordssynthesizing and processing technics    selective laser sintering    nylon–12    nanosilica    dissolution-precipitation process
收稿日期: 2008-04-16     
ZTFLH: 

TB332

 
基金资助:

聚合物成型加工工程教育部重点实验室(华南理工大学)开放课题资金20061006资助项目.

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