GÜÇ TUTUŞUR POLİPROPİLEN POLİMERİ VE LİF UYGULAMALARINDA SON GELİŞMELER VE GELECEK BEKLENTİLERİ

Abstract

Polimer esaslı (plastik) malzemelerin 1950’li yıllardan bu yana hayatın her alanında gittikçe artan bir oranda kullanım alanı bulmaktadır. Polipropilen (PP), poliolefin grubunda yer alan ve oldukça yaygın kullanılan termoplastik polimerlerden birisidir. PP’den elde edilen ürünler paketleme ve ambalaj sektöründe, otomotiv uygulamalarında, elektrik ve elektronik sektöründe ve inşaat sektöründe çok geniş bir uygulama alanına sahiptir. PP’nin tekstil sektöründe kullanımı da büyük önem arz etmektedir. PP düşük maliyet, hafiflik, yüksek mekanik dayanıklılık, yüksek kimyasal direnç ve istenilen ısıl kararlılık gibi önemli avantajları nedeniyle kullanım alanı sürekli artan bir malzemedir. Yanmaya karşı direnç PP’nin kullanıldığı pek çok alanda önemlidir. PP yüksek yanıcılığa sahip olduğundan çeşitli alev geciktirici katkı malzemeleri ile güç tutuşur hale getirilerek bu alanlarda kullanılır. Bu çalışmada PP’ye güç tutuşurluk özelliği (alev geciktiricilik) kazandırmak amacıyla kullanılan katkı malzemeleri incelenmiş, bu alandaki güncel gelişmelere ve gelecekteki beklentilere değinilmiştir. Güç tutuşurluk özelliği kazandıran malzemeler halojen içerenler, şişen sistemler, fosfor esaslılar, metal hidroksitler, nano malzemeler ve silikon içerenler olarak gruplandırılmıştır. Bu çalışmada “güç tutuşurluk” ve “alev geciktiricilik” terimleri İngilizce “flame retardancy” terimi ile eş anlamlı olarak kullanılmıştır.

Keywords

• Güç tutuşur (Alev geciktirici),Halojen,Şişen alev geciktirici,Fosfor ve Metal hidroksit,Nano malzeme,Silikon

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