FARKLI ÜRETİM YÖNTEMLERİNİN ATIK PET ESASLI ALKİD REÇİNE ÖZELLİKLERİNE ETKİSİ

Abstract

Alkid reçinelerinin hazırlanması için, tek aşamalı “yağ asidi yöntemi” ve iki aşamalı “monogliserid yöntemi” olmak üzere iki ana üretim yöntemi vardır. Bu çalışmada, atık PET depolimerizasyon ara ürününün alkid reçinesi üretiminde hammadde olarak değerlendirilmesinde, her iki üretim yöntemi de kullanılmış ve farklı üretim yöntemlerinin reçinenin fiziksel/kimyasal film özellikleri ve termal özellikleri üzerine etkisi incelenmiştir. Her iki üretim yönteminde de, atık PET esaslı alkid reçineler, atık PET içermeyen referans alkid reçinelere benzer yüzey örtü özellikleri göstermiştir. Tüm reçinelerden, yumuşak (~17 könig saniyesi), esnek (15.000 mL kum), adhezyonu mükemmel (%100), darbe dayanımı yüksek (>200 kg.cm), parlak (125 GU), mükemmel asit, tuz ve çevre dayanımına sahip filmler elde edilmiştir. Bunun yanı sıra, atık PET ara ürünü kullanımına bağlı olarak, her iki üretim yönteminde de termal dayanımın, atık PET içermeyen referans alkid reçinelere göre iyileştiği ve yaklaşık 10-15oC daha yüksek sıcaklıklara kaydığı gözlenmiştir. Sonuç olarak, her iki üretim yöntemi ile gerçekleştirilen alkid reçine sentezlerinde, hammadde olarak atık PET ara ürünü kullanımı, reçinelerin yüzey örtü özellikleri üzerinde negatif bir etki göstermemiştir. Atık PET ara ürünü kullanımı durumunda, alkid reçinelerin termal dayanım özellikleri, atık PET içermeyen referans alkid reçinelere göre bir miktar artmıştır. Bu sonuçlar, muhtemelen alkid reçine sentezinde etilen glikol yerine daha büyük molekül ağırlıklı ve aromatik yapıda bir ara ürününün kullanımından kaynaklanmaktadır.

Keywords

• Atık PET
• Alkid reçine
• Monogliserid metodu
• Yağ asidi metodu
• Yüzey örtü özellikleri
• Termal özellikler

THE EFFECT OF DIFFERENT PRODUCTION METHODS ON WASTE PET BASED ALKYDE RESIN PROPERTIES

Abstract

For the preparation of alkyd resins, there are two main production methods, one-step “fatty acid method” and two-step “monoglyceride method”. In this study, both production methods were used to evaluate waste PET depolymerization intermediate as raw material in alkyd resin production and the effect of different production methods on the physical/chemical film properties and thermal properties of the resin were investigated. In both production methods, waste PET based alkyd resins showed similar surface coating properties with reference alkyd resins not containing waste PET. Soft (~17 könig seconds), flexible (~15.000 mL sand), having excellent adhesion property (100%), with high impact resistance (> 200 kg.cm), bright (125 GU), with excellent acid, salt and environment resistance films were obtained. In addition, due to the use of waste PET intermediate, it was observed that thermal strength improved in both production methods compared to reference alkyd resins not containing waste PET and shifted up to higher temperatures of about 10-15°C. As a result, the use of waste PET intermediate as a raw material in alkyd resin syntheses carried out by both production methods did not have a negative effect on the surface coating properties of the resins. In the case of the use of waste PET intermediate, the thermal strength properties of the alkyd resins increased slightly compared to the reference alkyd resins not containing waste PET. These results are probably due to the use of intermediate with larger molecular weight and aromatic structure instead of ethylene glycol in alkyd resin synthesis

Keywords

• Waste PET
• Alkyd resin
• Monoglyceride method
• Fatty acid method
• Surface coating properties
• Thermal properties

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