China Plastics ›› 2017, Vol. 31 ›› Issue (9): 91-96.DOI: 10.19491/j.issn.1001-9278.2017.09.014
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Abstract: This article reported an investigation on the accuracy and tensile property derived from the prototyping process and postprocessing technology for improvement of the accuracy and mechanical properties of SLA parts. VisiJet 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 postcuring 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 postcuring 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 postcuring time of 250 mins, although they achieved a maximum tensile strength of 22.84 MPa.
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URL: https://www.plaschina.com.cn/EN/10.19491/j.issn.1001-9278.2017.09.014
https://www.plaschina.com.cn/EN/Y2017/V31/I9/91