High glass transition temperature bismaleimide-triazine resins based on soluble amorphous bismaleimide monomer

作者：Ren, Zhidong; Cheng, Yuanrong; Kong, Lingqiang; Qi, Tianke; Xiao, Fei^*

来源：Journal of Applied Polymer Science, 2016, 133(3): 42882.

DOI：10.1002/app.42882

• composites
• mechanical properties
• polyimides
• thermal properties
• thermosets

A novel bismaleimide (DOPO-BMI) with unsymmetrical chemical structure and DOPO pendant group has been prepared. The particular molecular structure makes DOPO-BMI show an intrinsic amorphous state with a T-g about 135 degrees C and excellent solubility in most organic solvents, which is beneficial to the processability of bismaleimide composite materials. A series of bismaleimide-triazine (BT) resins have been prepared based on DOPO-BMI and 2,2-bis(4-cyanatophenyl) propane at various weight ratios. The prepared BT resins show outstanding solubility in organic solvent and low viscosity about 10-671 mPa s at 180 degrees C. The cured BT resins exhibit high glass transition temperature (T-g) over 316 degrees C. As the weight ratio of DOPO-BMI increases to 80% (BT80), the T-g can rise to 369 degrees C (tan delta). The cured BT resins also show good thermal stability with the 5% weight loss temperature over 400 degrees C under both nitrogen and air atmosphere.

• 出版日期2016-1-15
• 单位复旦大学