苯并噁嗪/ BMI/ 环氧树脂的固化动力学
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中北大学材料科学与工程学院,太原 030051

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Curing Reaction of Modification Benzoxazine/ Bismaleimide/ Epoxy Resin
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    摘要:

    制备了苯并噁嗪树脂/ BMI/ 环氧树脂三元体系,采用动态DSC 分析了三元体系的固化反应过程。
    并用Kissinger 和Ozawa 方法分别求得三元体系的反应活化能为89. 5 kJ/ mol。由Crane 理论计算得到该体系
    的固化反应级数n =0. 93 级反应;根据计算的动力学参数, 建立了三元体系的固化动力学模型。利用所建立
    的固化动力学模型分别预测了等温和动态条件下,三元体系的固化反应特性。得到了三元体系的固化工艺为
    180℃/1 h+200℃/2 h+230℃/2 h,后处理工艺为250℃/2 h。

    Abstract:

    We have developed new polymeric systems based on the ternary mixture of typical benzoxazine mono
    mers with a typical modification bismaleimide and epoxy resin. Non-isothermal differential scanning calorimetry (DSC)
    was used to follow the curing reaction. The analyses showed that there are a exothermic reaction peak from 164℃ to
    306℃ for the modification benzoxazine/ bismaleimide/ epoxy resin system and top of the peak is 240℃,which con
    firmed main reaction of modification benzoxazine/ bismaleimide/ epoxy resin system. The curing process temperatures
    such as gelation temperature (Tgel)= 151℃, curing temperature (Tp)= 224℃ and postcuring (Ttreat )= 295℃ were
    acquired. The reaction energy of the modification benzoxazine/ bismaleimide/ epoxy resin system was 89. 5 kJ/ mol and
    the reaction level is 0. 93 by using Kissinger and Crane equation. The cure kinetic model of the curing process based
    on n order reaction equation was established,which was used for simulation of the curing reaction characteristics. Cu
    ring technics is 180℃/1 h+200℃/2 h+230℃/2 h,post curing technics is 250℃/2 h.

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李 玲.苯并噁嗪/ BMI/ 环氧树脂的固化动力学[J].宇航材料工艺,2010,40(5).

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  • 在线发布日期: 2016-11-28
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