Thermal stability of epoxy resins modified by carbazole derivatives

• Autorzy: Mazela W. , Czub P. , Pielichowski J.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the research on commonly used epoxy resins modified by carbazole derivatives. The 9-(2,3--epoxypropyl)carbazole, 5-(9-carbazolyl)methyl-l,3-oksothiolane-2-thione and 3,6-dichlor (or 3,6-dibrom) 9-(2,3--epoxypropyl)carbazole were used as modifiers. A series of cured epoxy compositions have been characterized by thermogravimetric analysis and differential scanning calorimetry. The oxygen index method was employed to investigate the flammability of newly achieved materials. It was found that the thermal stability depends on the amount and the structure of added modifier, as well as on kind of the resin used. Much of obtained compositions exhibit slightly lower initial decomposition temperature, however it could be stated that although the thermal decomposition of modified epoxy resins starts earlier, it does not proceed faster or more rapidly. Any essential flammability changes of modified resins, in comparison with base epoxy resins, have been observed.

Słowa kluczowe

EN

epoxy resins; thermal stability; glass transition temperature

PL

żywice epoksydowe; stabilność cieplna; temperatura zeszklenia

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2003
• Tom: Vol. 5, nr 4
• Strony: 1--2
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Mazela W.

autor

Czub P.

autor

Pielichowski J.

• Cracow University of Technology, Independent Department of Polymer Chemistry and Technology, ul. Warszawska 24, 31-155 Kraków, Poland,

Bibliografia

• (1) Mazela, W, Pielichowski, J., Czub, P., Sanetra, J., Badania właściwości foto- i elektro-Iuminescencyjnych żywic epoksydowych modyfikowanych pochodnymi karbazolu, Prace Naukowe Instytutu Technologii Organicznej i Tworzyw Sztucznych Politechniki Wrocławskiej, 2001, 50(23), 400.
• (2) Mazela, W, Pielichowski, J., Czub, P., Sanetra, J., Modyfikowane żywice epoksydowe o właściwościach foto- i elektroluminescencyjnych (P-65), VII International Symposium ,,Forum Chemiczne", Warszawa 14 - 16.05.200l.
• (3) Mandowska, E., Mazela W, Czub P., Mandowski, A., Pielichowski J., Świątek, J., Luminescence properties of carbazole modified epoxy resins, documents (P13) ofthe 9-th International Conference ERPOS, Prague, 14 - 18.07.2002.
• (4) Czub, P., Pielichowski, J., Mazela W, Polish Patent Application P-352 849, 2002.
• (5) Czub, P., Bończa-Tomaszewski Z., Penczek P., Pielichowski J., Chemia i technologia żywic epoksydowych, IV ed., WNT, Warszawa, 2002.