期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 214, 期 4, 页码 969-978出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2013.11.007
关键词
Polyether ketone; Selective laser sintering; High temperature
Laser sintering (LS) of polymers has high potential for growth as a manufacturing technique into a wide range of applications provided the range of engineering polymers available for LS expands and machines and LS process conditions are optimised for such materials. This study is the first investigation into laser sintering of both virgin and used polyether ketone (PEK) powder using a bespoke high temperature (HT) polymer laser sintering machine (known commercially as EOSINT P800). The physico-chemical results reveal that, in spite of polymer degradation, used PEK has a viable processing window for LS manufacturing which, combined with optimisation of specific parameters can successfully lead to manufacture of good quality parts. The proposed sintering mechanism of both, virgin and used powders is supported by the experimental data. The incorporation of 30% used HP3 PEK powder led to an approximately 17% drop in tensile strength. (C) 2013 Elsevier B.V. All rights reserved.
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