马来酰亚胺
硫醇
高分子化学
Diels-Alder反应
热固性聚合物
呋喃
加合物
化学
材料科学
有机化学
催化作用
作者
Kaito Sugane,Reika Takagi,Mitsuhiro Shibata
标识
DOI:10.1016/j.reactfunctpolym.2018.08.001
摘要
The thiol-maleimide “click” reaction of 4,4′-bismaleimidodiphenylmethane (BMI) and furfuryl mercaptan generated 4,4′-bis(2-furfurylthiosuccinimido)diphenylmethane (BFSI). Mixtures of BFSI, BMI, and a tetrathiol (S4P) at a (furan+thiol)/maleimide ratio of 1/1 were prepolymerized at 100 or 200 °C and molded at 100–120 or 200–230 °C to produce cured products (BFSI-BMI-S4Ps or hBFSI-BMI-S4Ps). The FT-IR analysis revealed that the thiol-maleimide and DA reactions occurred for BFSI-BMI-S4Ps, while the structure of DA adducts was not retained for hBFSI-BMI-S4Ps. The BFSI-BMI-S4Ps were thermally healable, and the healing efficiency increased with the increase in the S4P/BFSI ratio unexpectedly. Although the hBFSI-BMI-S4Ps were not healed, they exhibited better thermo-mechanical properties than BFSI-BMI-S4Ps.
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