Seçici laser sinterlemede poliamid 12’ye dendritik bakır tozu ilavesinin etkisi

Year 2021, Volume: 36 Issue: 1, 421 - 432, 01.12.2020

Aylin Bekem Burçin Özbay Mustafa Bulduk

https://doi.org/10.17341/gazimmfd.728198

Cited By: 2

Abstract

Günümüzde polimer malzemeler ev eşyalarından mühendislik uygulamalarına kadar geniş bir kullanım alanına sahiptir. Bu nedenle özelliklerinin geliştirilmesi önemlidir. Katkı maddeleri ilavesi, polimer malzemelerin özelliklerini artırabilmektedir. Katkı ilave tekniği ve bileşimleri imalat yöntemine göre değişebilmektedir. Yeni bir üretim yöntemi olup kızılötesi lazer ışını ile polimer tozlarının sinterlenmesine dayanan Seçici Lazer Sinterleme (SLS) toz yataklı eklemeli imalat metodunda da katkı maddelerinin kullanılması mümkündür. Bu metotta katkı kullanımı çok yaygın olmasa da en çok tercih edilen katkı maddeleri seramik esaslı inorganik malzemelerdir. Bununla birlikte, ince metalik parçacıklar da katkı maddesi olarak kullanılabilir. Bu çalışmada dendritik bakır tozu katkılı poliamid 12'nin SLS ile prosesi incelenmiştir. İki farklı katkı içeriğindeki toz karışımları proses parametreleri belirlemek amacıyla karakterize edilmiş ve artan enerji yoğunluğunun kullanılması gerektiği saptanmıştır. Beş farklı parametre kullanılarak üretilen numunelerin fiziksel ve mekanik testleri sonucu katkı ilavesiyle eğme özellikleri ve boyutsal hassasiyet düşerken, yüzey pürüzlülüğü değişmemiş ve depolama modülü iyileşme göstermiştir.

Keywords

Dendritik bakır tozu, polyamid 12, seçici laser sinterleme

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