Modifying surface properties of polyamide powders for selective laser sintering

被引：0
|
作者：
Lyakhovich, A. M. [1 ]
Kashapov, R. N. [1 ,2 ]
Kashapov, N. F. [1 ]
Kashapov, L. N. [1 ,3 ]
机构：
[1] Kazan Fed Univ, Engn Inst, Kazan 420008, Russia
[2] Russian Acad Sci, FRC Kazan Sci Ctr, Zavoisky Phys Tech Inst, Lab Radiat Phys, Kazan 420029, Russia
[3] Russian Acad Sci, FRC Kazan Sci Ctr, Inst Mech & Engn, Lab Continuum Mech, Kazan 420111, Russia
来源：
INTERNATIONAL SCIENTIFIC-TECHNICAL CONFERENCE ON INNOVATIVE ENGINEERING TECHNOLOGIES, EQUIPMENT AND MATERIALS 2018 (ISTC-IETEM-2018) | 2019年 / 570卷
关键词：
D O I：
10.1088/1757-899X/570/1/012066
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The purpose of this work was determination of the changes in surface properties of Polyamide-12 powder used in Selective Laser Sintering (SLS). The powders of original polyamide Duraform PA(tm) (3D Systems) were investigated. Also the powders remaining around the product after the sintering process were investigated. The difference in the chemical structure of the Polyamide-12 powder surface layers has been established. The reason is the increased content of oxygen-containing groups in the surface layers. To a greater extent, this difference was revealed for powders left after sintering and intended for reuse. Aliphatic chains are subject to oxidative degradation in the surface layers of the original powder. In the powder remaining after sintering, terminal carbonyl and amine groups are subject to oxidative degradation.
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页数：7
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