Geri dönüştürülmüş karbon siyahı takviyeli doğal kauçuk karışımlarında yorulma çatlak ilerlemesi karakterizasyonu

Yıl 2025, Cilt: 40 Sayı: 2, 789 - 800

Onur Haydari , Emrecan Söylemez

https://doi.org/10.17341/gazimmfd.1408888

Öz

Geri dönüştürülmüş karbon siyahı (RKS), geleneksel karbon siyahına (GKS) kıyasla daha düşük yüzey alanına ve daha yüksek kül içeriğine sahiptir. Bu sebeple, RKS'nin doğal kauçuk (NR) karışımındaki dispersiyonu GKS'ye göre daha zor olabilir. Ancak, RKS'nin GKS'ye göre daha zor disperse olması nedeniyle, hamurda RKS'nin GKS'ye göre dispersiyonu daha zorlu bir süreçtir ve bu süreç, karıştırma süresine daha fazla bağımlılık gösterir. Bu çalışma, RKS ile takviye edilmiş vulkanize NR karışım numunelerinin yorulma çatlak ilerleme hızını, GKS ile takviye edilmiş vulkanize NR karışım numunelerinin yorulma çatlak ilerleme hızıyla karşılaştırmaktadır. RKS ile takviye edilmiş NR'nin yorulma çatlak ilerleme hızının GKS ile takviye edilmiş NR'a kıyasla daha yüksek olduğu gözlemlenmiştir. Her iki karışım modeli için yorulma çatlak ilerleme hızı ve gerinme enerjisi arasındaki ilişki modellenmiş olup, analizler ve çıkan sonuçlar tasarımcıların hasar toleransını dikkate alarak döngüsel ekonomi kavramına uygun alternatif kauçuk karışımları seçmelerine olanak tanır.

Anahtar Kelimeler

Geri Dönüştürülmüş Karbon Siyahı, Karbon Siyahı Kompozisyonu, Doğal Kauçuk, Yorulma Çatlak İlerlemesi

Teşekkür

Angst Pfister Gelişmiş Teknik Çözümler Firması’nda yürütülen çekme ve yorulma çatlak ilerlemesi deneylerindeki yardımlarından dolayı Arda Gürarda’ya teşekkür ederiz.

Fatigue crack growth characterization of the recycled carbon black reinforced natural rubber mixes

Öz

Recovered carbon black (rCB) typically has a lower surface area and higher ash content compared to virgin carbon black (vCB). Consequently, the dispersion of rCBS in natural rubber (NR) can be challenging compared with vCB. As a result, the incorporation of rCB into the compound proves to be a more demanding process than vCB, exhibiting a greater dependency on mixing time. Process parameters were studied to understand the dominant impacts on the endurance performance. This study compares the fatigue crack growth rate of vulcanized NR mixtures reinforced with rCB and vCB. It has been observed that the fatigue crack growth rate in NR reinforced with rCB is higher compared with vCB. The relationship between fatigue crack growth rate and strain energy has been modeled for both mixture types, allowing designers to select alternative rubber mixtures suitable for circular economy concepts while considering damage tolerance.

Anahtar Kelimeler

Recovered Carbon Black, Carbon Black Composition, Natural Rubber, Fatigue Crack Growth

Kaynakça

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