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Article: Morphology and properties of selective laser sintered bisphenol a polycarbonate

TitleMorphology and properties of selective laser sintered bisphenol a polycarbonate
Authors
Issue Date2003
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/iecr
Citation
Industrial And Engineering Chemistry Research, 2003, v. 42 n. 9, p. 1850-1862 How to Cite?
AbstractSelective laser sintering (SLS) was used to process bisphenol A polycarbonate (PC) powder. The effects of the energy density of the laser beam (ranging from 0.036 to 0.12 J/mm 2) on the morphology and physical and tensile properties of the sintered specimens were investigated. In general, high energy density of the laser beam resulted in better fusion of the PC particles and enabled a more compact structure to be built. When the energy density became excessively high, however, severe degradation of the polymer occurred, leading to the evolution of gases and a reduction in the molecular weight. Consequently, the physical density and tensile strength of the sintered specimens decreased, and the surface roughened. The tensile strength of the specimens was closely related to the physical density, and anisotropy was observed along different loading directions. Bonus Z increased rapidly during sintering of the first few layers and then gradually during sintering of the subsequent layers. Curling of the sintered specimens became severe at high energy density, and cracking was observed on the bases of multilayered specimens as a result of the excessive accumulation of residual tensile stresses. this work forms a basis for the production of selective laser sintered PC functional parts.
Persistent Identifierhttp://hdl.handle.net/10722/75574
ISSN
2015 Impact Factor: 2.567
2015 SCImago Journal Rankings: 0.976
References

 

DC FieldValueLanguage
dc.contributor.authorHo, HCHen_HK
dc.contributor.authorCheung, WLen_HK
dc.contributor.authorGibson, Ien_HK
dc.date.accessioned2010-09-06T07:12:30Z-
dc.date.available2010-09-06T07:12:30Z-
dc.date.issued2003en_HK
dc.identifier.citationIndustrial And Engineering Chemistry Research, 2003, v. 42 n. 9, p. 1850-1862en_HK
dc.identifier.issn0888-5885en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75574-
dc.description.abstractSelective laser sintering (SLS) was used to process bisphenol A polycarbonate (PC) powder. The effects of the energy density of the laser beam (ranging from 0.036 to 0.12 J/mm 2) on the morphology and physical and tensile properties of the sintered specimens were investigated. In general, high energy density of the laser beam resulted in better fusion of the PC particles and enabled a more compact structure to be built. When the energy density became excessively high, however, severe degradation of the polymer occurred, leading to the evolution of gases and a reduction in the molecular weight. Consequently, the physical density and tensile strength of the sintered specimens decreased, and the surface roughened. The tensile strength of the specimens was closely related to the physical density, and anisotropy was observed along different loading directions. Bonus Z increased rapidly during sintering of the first few layers and then gradually during sintering of the subsequent layers. Curling of the sintered specimens became severe at high energy density, and cracking was observed on the bases of multilayered specimens as a result of the excessive accumulation of residual tensile stresses. this work forms a basis for the production of selective laser sintered PC functional parts.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/iecren_HK
dc.relation.ispartofIndustrial and Engineering Chemistry Researchen_HK
dc.titleMorphology and properties of selective laser sintered bisphenol a polycarbonateen_HK
dc.typeArticleen_HK
dc.identifier.emailCheung, WL:wlcheung@hkucc.hku.hken_HK
dc.identifier.authorityCheung, WL=rp00103en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0037473537en_HK
dc.identifier.hkuros77184en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037473537&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume42en_HK
dc.identifier.issue9en_HK
dc.identifier.spage1850en_HK
dc.identifier.epage1862en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHo, HCH=7401465514en_HK
dc.identifier.scopusauthoridCheung, WL=7202743084en_HK
dc.identifier.scopusauthoridGibson, I=15831816500en_HK

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