中国塑料2017，Vol.31Issue(9)：91-96,6.DOI:10.19491/j.issn.1001-9278.2017.09.014
层厚/支撑角度及后处理对SLA零件性能的影响
Effect of Layer Thickness, Support Angle and Post-processing on Properties of SLA Parts
摘要
Abstract
This article reported an investigation on the accuracy and tensile property derived from the prototyping process and post-processing technology for improvement of the accuracy and mechanical properties of SLA parts.VisiJet(R) SL Black photosensitive resin was employed as a based material to prepare SLA parts.Effects of layer thickness and support angle on the size and surface accuracies of the parts were studied,and influence of post-curing time on their mechanical properties was evaluated.The results indicated that the parts achieved a higher size accuracy when the support angle was close to 45 °.A hump phenomenon was observed for the parts with a thick layer at a small support angle.Thicker layer resulted in a rougher surface for the parts.The parts achieved a tensile strength around 9.33～22.84 MPa with a brittle fracture.When the post-curing time was set to 200 min,the parts obtained a best plasticity effect and thus gained the tensile strength of 20.24 MPa and elongation at break of 3.80 ％ as an optimum value.However,the plasticity became poor for the parts at the post-curing time of 250 mins,although they achieved a maximum tensile strength of 22.84 MPa.关键词
光固化/三维打印/成型精度/力学性能Key words
stereo lithorgraphy apparatus/three dimensional printing/prototyping accuracy/mechanical property分类
化学化工引用本文复制引用
郭亮,陈忠旭,张庆茂,冯加模..层厚/支撑角度及后处理对SLA零件性能的影响[J].中国塑料,2017,31(9):91-96,6.基金项目
广东省科技项目(2016B090917002) （2016B090917002）
广东省自然科学基金(2016A030313456) （2016A030313456）
2017国家重点研发计划(SQ2017YFGX070050) （SQ2017YFGX070050）
