چکیده مقاله
Epoxy resins are widely utilized for their exceptional adhesion and strength to weight ratio, but their inherent brittleness restricts their applications To enhance toughness, researchers have explored incorporating various modifiers This study investigates the effects of polyether amines PEAs , specifically PEG AM and PPG AM, on the dynamic mechanical properties of epoxy resins Modifications using different molecular weights of PEAs were examined through dynamic mechanical analysis DMA , focusing on viscoelastic behavior, glass transition temperature Tg , and crosslinking density Results show that increasing PEA content and molecular weight reduces Tg and crosslinking density, with PEG AMs exhibiting greater flexibility compared to PPG AMs The relationship between β relaxation and crosslinking density indicates a shift to lower temperatures with PEA modifications These findings suggest that PEAs can effectively enhance the toughness of epoxy systems by altering their dynamic mechanical properties
کلیدواژهها
نویسندگان
Hossein Abdollahi
Department of Polymer Engineering, Faculty of Engineering, Urmia University, Urmia
Samaneh Ghanbarlou
Department of Chemical Engineering, Faculty of Allameh Jafari, Sahand University of Technology, Tabriz
شیوه ارجاع
Abdollahi, Hossein and Ghanbarlou, Samaneh,1403,Dynamic -Mechanical Properties of Epoxy Systems modified by Flexible Polyamines,the eighth International Conference on Technology Development in Chemical Engineering,Tehran
ارائهشده در
مجموعه مقالات هشتمین کنفرانس بین المللی توسعه فناوری در مهندسی شیمی30 بهمن 1403 · تهران