原子灰BPO-DMA-Co(Ⅱ)固化体系的探讨

Discussion on the curing system of Poly putty BPO-DMA-Co(II)

摘要:

采用BPO-DMA和BPO-DMA-Co(Ⅱ)两种固化体系分别对原子灰进行固化和等温差示扫描量热法（DSC）测试，并对其固化时间、固化性能、固化程度、反应活化能进行探究，证实BPO-DMA体系中Co(Ⅱ)的引入，不仅使原子灰固化速度快、表干好、附着情况优，而且降低了固化反应的活化能，增大了固化程度；通过非等温DSC研究BPO-DMA-Co(Ⅱ)固化体系对原子灰的固化反应过程，采用Kissinger极值法、FWO积分法，T-β(温度-升温速率外推) 法，计算出该固化体系的固化参数以及固化温度；同时根据Friedman计算方法判定BPO-DMA-Co(Ⅱ)固化体系遵从自催化固化模型，并根据线性回归计算得到动力学方程，对该固化过程进行模拟，结果表明与实验测得数据有很好地吻合性。

Abstract:

BPO-DMA and BPO-DMA-Co(II) curing systems were used to perform solidification and isothermal differential scanning calorimetry (DSC) tests on the Polyrster putty, and the curing time, curing performance, curing degree, the reaction activation energy can be explored, It is confirmed that the introduction of Co(II) in the BPO-DMA system not only made the poly putty curing speed fast, the good air drying property, and the adhesion was excellent, but also reduced the reaction activation energy of the isothermal curing and increased the curing degree; The curing reaction process of the BPO-DMA-Co(II) curing system on the Poly putty was studied by non-isothermal DSC, The curing parameters and curing temperature of the curing system were calculated by Kissinger extreme value method, FWO integration method and T-β (temperature-heating rate extrapolation )method. At the same time, according to the Friedman calculation method, it is determined that the BPO-DMA-Co(II) curing system complies with the autocatalytic curing model，and the kinetic equation is calculated according to linear regression, the results show that the data are in good agreement with the experimental measurements.