POLİMER ESASLI KÖPÜK MALZEMELER

Özellikle son yıllarda tüm üretim sektörlerinde hafiflik, ucuzluk ve daha az hammadde tüketimi ön lana çıkmaktadır. Bu özelliklere ilaveten yüksek darbe dayanımı, artan tokluk, artan termal kararlılık, azalan elektriksel ve ısısal yalıtım gibi özellikleri de sağlayabilen polimer esaslı köpük malzemelerin kullanımı hızla artmaktadır. Bu avantajlarından dolayı genellikle endüstride polietilen, poli-üretan, poli-vinil-klorür ve polipropilen gibi polimerler kullanılmaya başlamıştır. Bu çalışmada, henüz Türkiye’de çok gelişme göstermemiş bir konu olan polimer köpük malzemeler tanıtılmıştır. Ayrıca polimer esaslı köpük malzeme üretimindeki amaçlar, köpük yapıcı kimyasal maddeler ve bunların üretim yöntemleri hakkında bilgiler verilmiştir. Bu bilgiler ışığında, istenilen özelliklerde köpük malzeme üretimini gerçekleştirmek için en uygun köpük yapıcı kimyasallar ve üretilecek malzemeye uygun üretim prosesi seçilmelidir. Buna ilave olarak işlem şartları da özellikleri etkileyen ana faktörlerden birisidir.

Anahtar Kelimeler:

Polimer Köpük, Köpüklerin Sınıflandırılması, Köpük Üretim Yöntemleri

POLYMER BASED FOAM MATERIALS

All branches of the manufacturing sector demands more lightweight, cheaper and more efficient materials,especially in last decades. Polymer based foams are remarkable with their properties such as high toughness, highimpact resistance, higher thermal stability, lower electrical conductivity and thermal insulation. Because of thisadvantages it is possible to see an increasing in the usage of polyethylene, poly-urethane, polyvinilclorur,polypropylene. In this study, an introduction was made about polymer foam materials which were not attractingattention in Turkey till last few years. Moreover, information was given about aim of the polymer foamproducing, foaming chemical agents, production methods of foams. In the light of this knowledge, most suitablefoaming chemical and producing method should be chosen in order to produce desired foam material.Furthermore, service conditions affect properties in a wide range.

Keywords:

Polymer Foam, Classification of Polymer Foams, Manufacturing Method of Foams,

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