%0 Journal Article %T STUDIES ON RELIABILITY OF POLYESTER RESINS IN PLASTICIZING POLY(VINYL CHLORIDE). %J International Conference on Aerospace Sciences and Aviation Technology %I The Military Technical College %Z 2090-0678 %A Abdel-Azim, Abdel-Azim A. %A Elsaiid, A. Elbaz %D 1999 %\ 05/01/1999 %V 8 %N ASAT Conference, 4-6 May 1999 %P 1-15 %! STUDIES ON RELIABILITY OF POLYESTER RESINS IN PLASTICIZING POLY(VINYL CHLORIDE). %K polyester %K Resin %K Plasticizer %K Plasticization %K Poly(vinyl chloride) %K PVC %K Polyesterification %K ethylene glycol %K Diethylene glycol %K Triethylene glycol %K Butylene glycol %K Phthalic anhydride %K Adipic acid %K Sebacic acid %K Succinic acid %K Compatibility %R 10.21608/asat.1999.25136 %X Modem technology introduced reinforced plastics in various applications in aerospace fields. The plastic materials in these fields certainly need different additives to improve their physical and mechanical properties. A series of polyesters resins having different structures and molecular weights have been prepared. The molecular weights of the prepared polyesters were determined via end group analysis. These polyesters were blended with dioctyl phthalate (DOP) and the efficiencies of these blends as plasticizers for PVC were evaluated. It was proved that some of the prepared aliphatic polyesters improve the action of the traditional low molecular weight plasticizer. This conclusion was attained by monitoring the mechanical properties (tensile - of elongation - hardness) throughout a whole year. %U https://asat.journals.ekb.eg/article_25136_c734c5f06eca5c4f33e3f73b79287b0d.pdf