Mechanical properties of PA6/PA12 blend specimens prepared by selective laser sintering

被引：105
|
作者：
Salmoria, G. V. [1 ]
Leite, J. L. [1 ]
Vieira, L. F. [1 ]
Pires, A. T. N. [1 ]
Roesler, C. R. M. [1 ]
机构：
[1] Univ Fed Santa Catarina UFSC, Lab CIMJECT, Dept Engn Mecan, BR-88040900 Florianopolis, SC, Brazil
来源：
POLYMER TESTING | 2012年 / 31卷 / 03期
关键词：
Mechanical properties; Dynamic tests; PA6/PA12; blends; Selective laser sintering;
D O I：
10.1016/j.polymertesting.2011.12.006
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The use of polymeric blends can increase the range of structures and properties of selective laser sintering (SLS) parts. This study investigates the processing of a binary polar system using polyamide 6 (PA6) and polyamide 12 (PA12) by SLS. The mixture composition and processing conditions, and their influence on the dynamic mechanical properties of the specimens manufactured were evaluated. The maximum tan delta values suggest that PA6 and PA12 have similar visco-dissipative behavior. The PA6/PA12 blends behavior varied according to the relaxation phenomena of the pure components, proportionally to the blend composition. The creep test showed that blends with a higher amount of PA6 had greater plastic deformation and less elastic recovery. In the fatigue test the 20/80 and 50/50 blends presented good fatigue resistance under the test conditions. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：411 / 416
页数：6
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