Pamukkale Univ Muh Bilim Derg. 2017; 23(1): 36-39 | DOI: 10.5505/pajes.2015.57778

Mechanical properties of recycled cestamides

Hilal Can
Pamukkale University, Technology Faculty, Denizli, Turkey

A kind of polyamide which can be obtained by casting in atmospheric conditions is called as cestamide (cast polyamide). Due to cestamides have a lower melting temperature compared to polyamides, cestamides have the values of better strength and toughness. Cestamides, which their usage areas are growing over time, have also other types including additives of sodium, magnesium, solid or liquid oil. In this study, the mechanical properties of samples reproduced from scrap cestamide at workshop conditions have been determined. The values of recycled samples have been compared with the results of experiments done for semi-finished. Recycled samples have lower mechanical properties to semi-finished samples. Average uniform stretching of recycled samples 30 times lower than cestamide semi-finished samples. Recycled samples have 17.3% tensile strength to semi-finished samples.

Keywords: Cestamide, Cast polyamide, Mechanical properties, Humidity properties

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Geri dönüþtürülmüþ kestamidlerin mekanik özellikleri

Hilal Can
Pamukkale Üniversitesi, Teknoloji Fakültesi, Denizli, Türkiye.

Atmosfer koþullarýnda dökülebilme kabiliyetine sahip poliamid türü kestamid (döküm poliamid) olarak adlandýrýlmaktadýr. Kestamidlerin ergime sýcaklýklarýnýn poliamidlerin ergime sýcaklýklarýna göre daha düþük olmasý nedeniyle kestamidler daha iyi dayaným ve tokluk deðerlerine sahiptir. Gün geçtikçe artan kullaným alanýna sahip olan kestamidlerin sodyum, magnezyum, katý ve ya sývý yað katkýlý türleri mevcuttur. Bu çalýþmada, yarý mamul kestamidden atölye koþullarýnda yeniden üretilen numunelerin mekanik özellikleri belirlenmiþtir. Yarý mamul ve geri dönüþtürülmüþ numunelerin mekanik özellikleri ve nem emme kabiliyetleri karþýlaþtýrýlmýþtýr. Geri dönüþtürülmüþ kestamidde ortalama üniform uzama yarý mamule göre 30 kat azalýrken, ortalama çekme dayanýmý yarý mamulün ortalama çekme dayanýmýnýn %17.3’ü kadar olarak saptanmýþtýr.

Anahtar Kelimeler: Kestamid, Döküm poliamid, Mekanik özellikler, Nem özellikleri

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