The Effect of Post-Curing Time on Mechanical Properties in 3D Polymer Materials Printed by Stereolithography (SLA) Method

Yıl 2020, Cilt: 35 Sayı: 4, 949 - 958, 31.12.2020

İsmail Aktitiz Kadir Aydın Alparslan Topcu

https://doi.org/10.21605/cukurovaummfd.868895

Cited By: 2

Öz

Stereolithography (SLA) is one of the most attractive methods in additive manufacturing approaches since obtained high dimensional sensitivity using liquid photosensitive resin and laser light. In this study, 3D polymer materials were fabricated by SLA device, and the ultraviolet post-curing process was applied at different durations (30, 60, 180, and 300 min) to investigate the effect of post-curing time on mechanical (tensile, Charpy impact tests) and thermal (DSC) properties of polymer materials. Elasticity Modulus value of post-cured polymer materials was increased by approximately 49% and achieved the level of 63.71 MPa. It was shown with the results of DSC analysis that the post-curing processes with the 180 min. and above is adequate since the carbon-carbon double bonds occurred.

Anahtar Kelimeler

Additive manufacturing, Stereolithography (SLA), Photosensitive resin, Ultraviolet curing

Stereolitografi (SLA) Tekniği ile Basılan 3 Boyutlu Polimer Yapılarda İkincil Kürleme Süresinin Mekanik Özelliklere Etkisi

Öz

Sıvı fotoduyarlı reçine ve lazer ışığı kullanılarak yüksek boyutsal hassasiyetin elde edildiği Stereolitografi (SLA) yöntemi, eklemeli imalat yöntemleri arasında en dikkat çeken tekniklerden birisi olmuştur. Bu çalışmada, SLA cihazı kullanılarak 3B polimer parçalar basılmış, ikincil kürleme süresinin polimer yapıların mekanik (çekme testi, çentik darbe testi) ve termal (diferansiyel taramalı kalorimetre (DSC) analizi) özelliklerine etkisini incelemek için farklı sürelerde (30, 60, 180 ve 300 dk) UV ikincil kürleme işlemi uygulanmıştır. İşlem uygulanmış polimerlerin elastisite modülü değerinde yaklaşık %49’luk bir artış gerçekleşmiş ve 63,71 MPa mertebelerine ulaşılmıştır. DSC analiz sonuçları 180 dakika ve üzeri ikincil kürleme proseslerinin karbon-karbon çift bağlarının oluşması için yeterli olduğunu göstermektedir.

Anahtar Kelimeler

Eklemeli imalat, Stereolitografi (SLA), Fotoduyarlı reçine, Ultraviyole kürleme

Kaynakça

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