YAPIŞTIRMA BAĞLANTILARINDA DOLGU MALZEMELERİNİN BAĞLANTI MUKAVEMETİNE ETKİSİ

Yıl 2023, Cilt: 7 Sayı: 2, 220 - 232, 31.08.2023

Oğuz Koçar Nergizhan Anaç Baki Hazer

https://doi.org/10.46519/ij3dptdi.1275235

Öz

Yapıştırma; iki veya daha fazla parçanın birleştirilmesinde vida, perçin gibi mekanik eleman ihtiyacı olmadan, yapıştırıcı kullanılarak gerçekleştirilen bir işlemdir. Yapıştırma bağlantılarında çoğunlukla mukavemetin yüksek olması istenir ve bu beklenti yapıştırıcı malzeme seçimini etkileyen en önemli faktörlerden biridir. Bağlantıların mekanik dayanımlarının artması için yapıştırıcıya dolgu maddeleri eklenebilmektedir. Bazı üreticiler ticari yapıştırıcılarının formüllerine gümüş, bakır, çelik, titanyum, alüminyum, bronz gibi metal veya alümina oksit gibi seramik esaslı partiküller eklemişlerdir. Bununla birlikte; dolgu maddeleri eklenerek yapıştırıcıların güçlendirilmesi konusu, gelişen yeni teknolojik malzemeler sayesinde araştırmacıların çalışmalarına devam ettiği bir alandır. Bu çalışmada 3B yazıcı ile PLA Plus filamentten üretilen farklı doluluk oranlarındaki parçalar (%20 ve %100) 2 farklı ticari (Araldite 2015, Loctite 9466) ve 2 farklı ticari olmayan yapıştırıcı (PVC esaslı ve PS-Th esaslı yapıştırıcı) kullanılarak birleştirilmiştir. Bu yapıştırıcılar içerisine ağırlıkça %5 oranında iki farklı dolgu malzemesi (44∼100 μm yumuşak lehim tozu, 45 μm fındık kabuğu tozu) ilave edilmiştir. Yapıştırma işlemi sonrasında bağlantıların mekanik özellikleri incelenmiştir. %100 dolu bağlantılarda Loctite 9466 yapıştırıcı içine %5 lehim ve fındık kabuğu tozu katkısı, bağlantı mukavemet değerini arttırmıştır. %20 dolu bağlantılarda ise yapıştırıcıya dolgu malzemesi eklenmesinin mukavemeti olumsuz etkilediği görülmüştür. Yapıştırılan parçaların doluluk oranları, yapıştırıcı malzemenin sade veya katkı eklenerek kullanılması gibi değişkenlerin bağlantı mukavemetini oldukça etkilediği anlaşılmıştır.

Anahtar Kelimeler

Eklemeli imalat, 3B baskı, Yapıştırma işlemi, Katkılı yapıştırıcı, Tekli bindirme bağlantısı.

EFFECT OF FILLING MATERIALS ON JOINT STRENGTH IN BONDED JOINTS

Öz

Adhesive bonding is a process of using adhesive to join two or more parts without needing mechanical fasteners, such as screws and rivets. Adhesive joints are desired for high strength, and this expectation is one of the most critical factors affecting the choice of adhesive. Fillers can be added to the adhesive to increase the mechanical strength of the joints. Some manufacturers have added metal-based particles such as silver, copper, steel, titanium, titanium, aluminum, and bronze or ceramic-based particles such as alumina oxide to the formulas of their commercial adhesives. However, strengthening adhesives by adding fillers is an area where researchers continue to work thanks to new technological materials.
In this study, parts with different filling ratios (20% and 100%) produced from PLA Plus filament with a 3D printer were joined using two different commercial adhesives (Araldite 2015, Loctite 9466) and two different non-commercial adhesives (PVC-based and PS-Th-based adhesive). Two different fillers (44∼100 μm soft solder powder and 45 μm hazelnut shell powder) were added to these adhesives at a rate of 5 wt%. The mechanical properties of the joints were examined after the adhesive bonding process. Solder and hazelnut shell powder (5%) additive in Loctite 9466 adhesive increased the joint strength value in infill ratio 100% joints. In the case of 20% infill ratio joints, it was observed that the addition of filler material to the adhesive negatively affected the strength. It is understood that variables such as the filling ratios of the bonded parts, and the use of the adhesive material plain or with additives affect the joint strength considerably.

Anahtar Kelimeler

Additive Manufacturing, 3D Printing, Adhesive Bonding, Filled Adhesive, Single Lap Joint

Kaynakça

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