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Chin J Mater Res  2009, Vol. 23 Issue (1): 103-107    DOI:
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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
Cite this article: 

YAN Chunze SHI Yusheng YANG Jinsong LIU Jinhui. Study on the reinforcement of nanosilica on the selective laser sintered nylon–12 parts. Chin J Mater Res, 2009, 23(1): 103-107.

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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 words:  synthesizing and processing technics      selective laser sintering      nylon–12      nanosilica      dissolution-precipitation process     
Received:  16 April 2008     
ZTFLH: 

TB332

 
Fund: 

Supported by Opening Project of the Key Laboratory of Polymer Processing Engineering, Ministry of Education, No.20061006.

URL: 

https://www.cjmr.org/EN/     OR     https://www.cjmr.org/EN/Y2009/V23/I1/103

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