Zhang Ying-ming, Wang Bing-yi, Yu Jian, et al. Effects of Aluminum Oxide on Curing and Thermal Decomposition Kinetics of Epoxy Resin[J]. 2019, 36(5): 63-70.
Zhang Ying-ming, Wang Bing-yi, Yu Jian, et al. Effects of Aluminum Oxide on Curing and Thermal Decomposition Kinetics of Epoxy Resin[J]. 2019, 36(5): 63-70.DOI: 10.12052/gdutxb.180174.
Effects of Aluminum Oxide on Curing and Thermal Decomposition Kinetics of Epoxy Resin
thermal decomposition kinetics and properties of epoxy resin (E51)/ 4
4'-Diaminodiphenylmet (DDM) system were investigated by a thermal analysis. The results on the curing kinetics of non-isothermal differential scanning calorimetry (DSC) showed that the addition of Al
2
O
3
pr
omoted the curing reaction. The activation energy of the E44/DDM system was reduced from 51.49 kJ/mol to 48.12 kJ/mol after 80%Al
2
O
3
addition. In addition
the kinetic parameters of the curing reaction were obtained by the
n
order model. Thermo-gravimetric analyzer was used to study the thermal decomposition kinetics of the epoxy curing system. The FWO method was used to calculate the activation energy of the degradation. The results showed that the addition of Al
2
O
3
powder had little effect on the initial decomposition activation energy of the 80%E51/DDM system. When the degradation rate reached 30%
the Al
2
O
3
powder had obvious inhibitory effect on the decomposition of E51/DDM system. The results of TG-IR test showed that carbon oxides
methane
carbonyl compounds
amines and aromatic compounds are the main products in the process of E51/DDM thermal decomposition. Al
2
O
3
powder can improve the thermal stability of the E51/DDM system. Dynamic mechanics showed that the addition of Al
2
O
3
increased the modulus of storage of epoxy resin cured products. DSC results showed that the addition of Al
2
O
3
powder increases the glass transition temperature from 114.16 ℃ to 121.51 ℃ of the system.
关键词
Keywords
references
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