SONG Wei, HAO Jingmei, DENG Yu, et al. Novel aromatic polyurea elastomer synthesized with a microwave-modified diamine[J]. Journal of Radiation Research and Radiation Processing, 2009,27(1):32-36.
SONG Wei, HAO Jingmei, DENG Yu, et al. Novel aromatic polyurea elastomer synthesized with a microwave-modified diamine[J]. Journal of Radiation Research and Radiation Processing, 2009,27(1):32-36.DOI:
A new type of chain extender for amide, named diacetyl ethylenediamine (DAED), was synthesized using microwave heating-induced reaction. Aromatic polyureas were synthesized through the reaction of 4,4’-diphenymethane diisocyanate with ethylenediamine (EDA) and DAED, respectively. The reaction rate was much lower when using DAED as chain extender than that of using EDA as chain extender. All these results indicate that DAED is an effective chain extender for preparation of spray polyurea system.