Öz

PP VE PP/TALK KOMPOZİTLERİN MEKANİK VE KÖPÜKLENME ÖZELLİKLERİ ÜZERİNE ERGİYİK SICAKLIĞI VE ENJEKSİYON BASINCININ ETKİLERİNİN İNCELENMESİ

Öz

Bu deneysel çalışmada, katkısız polipropilen (PP) termoplastik polimeri ve ağırlıkça %20 oranında talk katkılı polipropilen (PP-T) kompozit malzemesi kullanılmıştır. Köpük ajanı olarak endotermik tip kimyasal köpük ajanı kullanılmıştır. Enjeksiyon basıncı ve ergiyik sıcaklığı gibi üretim parametrelerinin katkısız polipropilen ve talk katkılı polipropilen kompozit köpük malzemelerin ortalama hücre boyutuna, hücre sayısına, köpük tabakası kalınlığına, köpük yoğunluğuna ve mekaniksel özelliklerine olan etkileri incelenmiştir. Elde edilen deney sonuçlarından ergiyik sıcaklığının artması ile hücre çapı artarken, malzeme yoğunluğu, kabuk tabakası kalınlığı, hücre yoğunluğu ve darbe dayanımı azalmıştır. Enjeksiyon basıncının artması ile köpük yoğunluğu, kabuk tabakası kalınlığı, hücre çapı ve darbe dayanımı azalırken, hücre yoğunluğu ise artmıştır. 

Anahtar Kelimeler

• PP Köpük,Köpük Ajanı,Hücre Morfolojisi,Mekanik Özellikler,Kompozit

Kaynakça

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