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Ren Z, Hao S, Xing Y, Yang C, Dai S. Asymmetric bismaleimide-based high-performance resins with improved processability and high Tg over 400 °C. HIGH PERFORM POLYM 2019. [DOI: 10.1177/0954008319826368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Asymmetric 2-(4′-maleimido)phenyl-2-(4′-maleimidophenoxyl)phenylbutane (EBA-BMI) was successfully mixed with N, N′-(4,4′-diphenylmethane)bismaleimide (DDM-BMI) to prepare the matrix resins for high-temperature fiber-reinforced polymeric composites (glass transition temperature ( Tg) > 400°C). Experimental results imply that DDM-BMI/EBA-BMI (DE-BMIs) show excellent melting performance with wide processing temperature window and low molten viscosity, suggesting excellent compatibility between DDM-BMI and EBA-BMI. For example, the viscosity of DE-BMI41 (DDM-BMI/EBA-BMI, 4/1) is about 474–51 mPa·s in the temperature range of 148–180 °C. In addition, cured DE-BMIs represent remarkable thermal properties with Tg over 400°C, under which the storage modulus could still reach as high as 3.2 GPa. Meanwhile, the coefficient of thermal expansion of these cured resins is about 36–40 ppm °C−1 at 50–250°C, and the 5% weight loss temperature is about 470°C.
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Affiliation(s)
- Zhidong Ren
- Research Center of Graphene Applications, AECC Beijing Institute of Aeronautical Materials, Beijing, China
| | - Sijia Hao
- Research Center of Graphene Applications, AECC Beijing Institute of Aeronautical Materials, Beijing, China
| | - Yue Xing
- Research Center of Graphene Applications, AECC Beijing Institute of Aeronautical Materials, Beijing, China
| | - Cheng Yang
- Research Center of Graphene Applications, AECC Beijing Institute of Aeronautical Materials, Beijing, China
| | - Shenglong Dai
- Research Center of Graphene Applications, AECC Beijing Institute of Aeronautical Materials, Beijing, China
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