ZEYTİN ÇEKİRDEĞİ TOZU İLAVE EDİLMİŞ POLİPROPİLEN KOMPOZİTİNİN MEKANİK ÖZELLİKLERİ

Öz

Bu çalışmada; toz haline getirilmiş zeytin çekirdeği tozları polipropilen (PP) polimeri içerisine ağırlıkça %5-10-15 ve 20 oranında katılarak çift vidalı ekstrüzyon makinesinde karıştırılmış ve dört farklı kompozit malzeme üretilmiştir. Polipropilen ve zeytin çekirdeği tozları arasındaki uyumluluğu artırmak için kompozite %5 oranında maleik anhidrit aşılanmış polipropilen (MA-g-PP) eklenmiştir. Daha sonra granül halindeki kompozit malzemeler enjeksiyon kalıplama yöntemi ile kalıplanarak standart test numuneleri basılmıştır. Kompozitin mekanik özellikleri hakkında bilgi edinmek için elastiklik modülü, akma mukavemeti, çekme mukavemeti, % uzama, sertlik, Izod darbe mukavemeti ve yoğunluk deneyleri yapılmıştır. Ayrıca zeytin çekirdeği tozlarının matris içerisinde dağılımlarını görmek için darbe testleri sonucundan elde edilen kırık yüzeylerden taramalı elektron mikroskobisi (SEM) ile fotoğrafları çekilmiştir. Yapılan testlerin sonuçlarına göre, matris içerisinde zeytin çekirdeği toz (ZÇT) oranının artmasıyla; elastiklik modülü, sertlik ve yoğunluk değerlerinin yükseldiği buna karşılık akma mukavemeti, çekme mukavemeti, % uzama ve darbe mukavemeti değerlerinin düştüğü tespit edilmiştir.

Anahtar Kelimeler

• Polipropilen
• biyo kompozit
• zeytin çekirdeği tozu
• mekanik özellikler
• maleik anhidrit.

MECHANICAL PROPERTIES OF OLIVE PIT POWDER ADDED POLYPROPYLENE COMPOSITE

Öz

In this study, powdered olive pits were added to polypropylene at a rate of 5-10-15 and 20% by weight, and four different polymer composite materials with olive pits were produced by twin screw extruder. 5% maleic anhydride grafted polypropylene (MA-g-PP) was added to the composite to increase the compatibility of polypropylene and olive pits. Later, the granular composite material was molded by injection molding method and standard test samples were molded. In order to learn about the mechanical properties of the composite, elasticity modulus, yield strength, tensile strength, % elongation, hardness, Izod impact strength and density tests were performed. In addition, in order to see the distribution of olive pit powders in the matrix, photographs of the broken surface were taken with scanning electron microscopy. According to the results of the tests, with the increase of olive pits powder ratios in the matrix; It was determined that the elasticity modulus, hardness and density values increased while the yield strength, tensile strength, elongation, and impact strength values decreased.

Anahtar Kelimeler

• Polypropylene
• bio composites
• olive pit powder
• mechanical properties
• maleic anhydride.

Kaynakça

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