ISSN:
1572-8935
Keywords:
Bismaleimide
;
BMI
;
Ortho-linked bis(ether amine)
;
Thermal property
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Three bismaleimides (BMIs) each having an ortho-linked aromatic unit were prepared by condensation of maleic anhydride with 1,2-bis(4-aminophenoxy)benzene (1a), 1,2-bis(4-aminophenoxy)-4-tert-butylbenzene (1b), or 2,3-bis(4-aminophenoxy)naphthalene (1c). The molecular structures of these BMIs were confirmed by elemental, IR, and NMR analyses. The thermal behavior of the BMIs was evaluated by differential scanning calorimetry (DSC), and the thermal properties of the thermally cured BMI resins were determined by dynamic thermogravimetric analysis (TGA) and thermomechanical analysis (TMA). The effects of structure of the BMIs on the curing behavior of the BMIs and on the properties of the cured resins were investigated. The BMI of 1a had a relatively high melting point (256 °C) and immediately polymerized after having been melted. The 1b-and 1c-based BMIs with a bulkier molecular structure exhibited lower melting points (136 and 171 °C), facilitating the use of these BMIs in the molten state. The cured BMI resins did not show significant decomposition below 450 °C in air or nitrogen and did not soften below 400 °C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s10965-006-0081-4
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