引用本文:
方芬, 颜红侠, 李倩, 张军平. BMI/BCE树脂体系反应固化动力学研究[J]. 应用化学,
2007, 24(3): 291-295.
Citation: FANG Fen, YAN Hong-Xia, LI Qian, ZHANG Jun-Ping. Reactive Mechanism and Curing Kinetics of BMI/BCE Resin[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 291-295.
Citation: FANG Fen, YAN Hong-Xia, LI Qian, ZHANG Jun-Ping. Reactive Mechanism and Curing Kinetics of BMI/BCE Resin[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 291-295.
BMI/BCE树脂体系反应固化动力学研究
摘要:
用傅立叶红外光谱(FTIR)跟踪研究了双马来酰亚胺预聚体(BMI)/氰酸酯树脂(BCE)的反应,并结合差示热扫描分析(DSC)探讨了反应机理。结果表明,BMI/BCE体系的反应主要包括BCE自聚反应、BMI自聚反应以及BCE与BMI之间的共聚反应,在反应前期主要以BCE自聚为主,到反应后期则以BCE与BMI之间的共聚反应为主。利用非等温差示扫描量热法研究了二者的固化反应动力学,求得固化工艺参数:凝胶温度为139.06℃,固化温度为175.97℃,后处理温度为214.05℃。固化动力学参数:表观活化能为39.27kJ/mol,频率因子为499.12s-1,反应级数为0.83。
English
Reactive Mechanism and Curing Kinetics of BMI/BCE Resin
Abstract:
The reaction between the prepolymer of Bismaleimide(BMI) and Cyanate(BCE) was studied with FTIR and DSC. The reaction mechanism of BMI/BCE was discussed. The results showed that there maybe three reactions:self-polymerization of BCE, self-polymerization of BMI, and co-reaction between BCE and BMI. The self-polymerization of BCE dominated the whole system at the first stage and the co-reaction between BCE and BMI domainted at the later stage. A kinetic analysis of BMI/BCE was carried out via differential scanning calorimetry(DSC). Non-isothermal DSC experimental data were obtained, including curing temperature 175.97℃, post-curing temperature 214.05℃ and gel temperature 139.06℃. The activation energy, frequency factor and reaction order were caculated with Kissinger, Crane methods. Their values were 39.27 kJ/mol, 499.12 s-1 and 0.83, respectively.
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Key words:
- cyanate
- / bismaleimide
- / cure reactive mechanism
- / curing kinetic
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