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采用插层聚合法将有机蒙脱土(OMMT)引入TDE-85/3,3’-二乙基-4,4’-二氨基二苯甲烷(DED-DM)固化体系中,通过示差扫描量热法(DSC)研究了OMMT改性前后固化体系的非等温固化动力学,采用Ozawa和Crane公式计算了体系的反应活化能和反应级数,确定了固化工艺;研究了OMMT含量对固化物插层效果、玻璃化转变温度、热失重过程及冲击性能的影响。结果表明:OMMT的加入使体系固化反应活化能和反应级数略有升高,这说明OMMT对体系的固化反应有一定的阻碍作用,但不改变固化反应机理。质量分数为1%～3%的OMMT在树脂基体中分散良好,实现纳米复合,材料的玻璃化转变温度明显提高。
The organic montmorillonite (OMMT) was introduced into TDE-85 / 3,3’-diethyl-4,4’-diaminodiphenylmethane (DED-DM) The kinetics of non-isothermal curing before and after modified by OMMT was studied by DSC. The reaction activation energy and reaction order of the system were calculated by Ozawa and Crane equations, and the curing process was confirmed. The effects of OMMT content Layer effect, glass transition temperature, weight loss process and impact properties. The results showed that the activation energy and reaction order of OMMT increased slightly when OMMT was added. This indicates that OMMT has a certain hindering effect on the curing reaction but does not change the curing reaction mechanism. The mass fraction of OMMT is 1% ~ 3% dispersed well in the resin matrix to achieve nanocomposite, the glass transition temperature of the material increased significantly.