Modification of the epoxy resin with epoxide and ester group containing oligomers and compounds

Epoksüvaigu modifitseerimine oligomeere ja nende ühendeid sisaldavate epoksiidide ja estrite rühmadega

Gulnare Ahmetli ； Zafer Yazicigil ； Ulku Soydal

《Proceedings of the Estonian Academy of Sciences》 64卷1S期 (2015/03) Pp. 71-76

https://doi.org/10.3176/proc.2015.1S.01

並列摘要

Epoxy toluene oligomers (ETO) are very important substances due to effective functional groups in their structure and they are especially used as polymer additives that have been synthesized from toluene and epichlorhydrin. Flame-retardant properties of the neat epoxy resin (ER), ETO, and ETO/ER blend thermoset were evaluated by UL94 vertical flammability test. The chlorine atoms in ETO increase the stability of the polymer material against burning. For the synthesis other polymers, first the waste product of the industrial vegetable oil refinement acid oil was transformed into the glycidyl ester (FAGE). Unsaturated oligo(ether-ester) (OEE) was prepared by ring-opening polymerization of the propylene oxide (PO) with FAGE in the presence of cationic catalyst BF_3．O(C_2H_5)_2. Its chemical structure was characterized with FTIR spectroscopy. These polymers, isoamyl methacrylate (AMA) and 1, 2-epoxy-hexane-5-en (EH) were used as modifiers in the DGEBA-type epoxy resin. The effects of the modifier structure and amount on the mechanical properties of epoxy were investigated. Tensile strength and Young's modulus of the modified samples were found higher than those of the neat epoxy resin.

並列關鍵字

epoxy resin ； oligomer ； modification