低压钡酚醛树脂改性苯并噁嗪树脂的研究

Study on low pressure barium phenolic resin modified benzoxazine resin

采用低压钡酚醛树脂（BPF）改性苯并噁嗪（BOZ-A）树脂,制备了一种新型树脂体系。通过DSC（差示扫描量热）法、TGA（热失重分析）法和凝胶试验探讨了共混树脂的基本性能。研究结果表明：随着BPF掺量的不断增加,BOZ-A树脂的凝胶时间明显缩短;共混树脂的热降解速率在300~500℃时相对较大,其残炭率为62%左右;当w（BPF）=20%（相对于共混树脂体系质量而言）时,共混树脂的表观活化能为58.01 k J/mol。

A novel resin system was prepared by BPF （low pressure barium phenolic resin） modified BOZ-A （benzoxazine） resin. The key properties of polyblend resin were discussed by DSC （differential scanning calorimetry） , TGA （thermogravimetic analysis） and gel experiment methods. The research results showed that the gelation time of BOZ-A resin was obviously shortened with increasing BPF contents. The thermal degradation speed of polyblend resin was relatively larger at 300-500 ℃ , its carbon residual rate was about 62%. The apparent activation energy of polyblend resin was 58.01 kJ/mol when mass fraction of BPF was 20% in polyblend resin system.