Pyrolysis Kinetics of Glass Fiber/Epoxy Foam Sandwich Panel

doi:10.11901/1005.3093.2019.192

Chinese Journal of Materials Research

2019, Vol. 33

Issue (9): 699-704 DOI: 10.11901/1005.3093.2019.192

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Pyrolysis Kinetics of Glass Fiber/Epoxy Foam Sandwich Panel

CHEN Songhua^1,²,XU Yanying^1,²(

),WANG Zhi^1,²,WANG Jing³

1. School of Safety Engineering, Shenyang Aerospace University, Shenyang 110136, China
2. Liaoning Key Laboratory of Aircraft Safety and Airworthiness, Shenyang Aerospace University, Shenyang 110136, China
3. School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China

Cite this article:

CHEN Songhua,XU Yanying,WANG Zhi,WANG Jing. Pyrolysis Kinetics of Glass Fiber/Epoxy Foam Sandwich Panel. Chinese Journal of Materials Research, 2019, 33(9): 699-704.

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Abstract

The thermal decomposition characteristics of glass fiber/epoxy foam sandwich panels was studied via DTG-60(AH) thermogravimetric analyzer by different heating rates and in three atmospheres with different oxygen contents. The results show that the pyrolysis reaction of glass fiber/epoxy foam sandwich panels in air can be differentiated into three stages. As the heating rate increases, the initial reaction temperature, the termination reaction temperature and the maximum mass loss rate temperature of the pyrolysis reaction shifted to the high temperature. The decrease of oxygen content in atmospheres has a greater impact on the third stage of thermal decomposition. The pyrolysis kinetics were analyzed by the Flynn-Wall-Ozawa method and the Starink method to obtain the apparent activation energy.

Key words: composites glass fiber/epoxy foam sandwich panels pyrolysis characteristics pyrolysis kinetics apparent activation energy

Received: 10 April 2019

ZTFLH:

V258

Fund: National Natural Science Foundation of China Youth Fund Project(51403129);Liaoning Natural Science Foundation(2018550705);Liaoning Provincial Department of Education Science and Technology Project(JYT19065)

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https://www.cjmr.org/EN/10.11901/1005.3093.2019.192 OR https://www.cjmr.org/EN/Y2019/V33/I9/699

Fig.1 TG and DTG curves of experimental samples (a) TG curves, (b) DTG curves

Table 1 Temperature parameters of each stage of pyrolysis of experimental samples

Fig.2 TG and DTG curves at different heating rates (a) TG curves, (b) DTG curves

Table 2 Pyrolysis temperature parameters at different heating rates

Fig.3 TG and DTG curves at different oxygen levels (a) TG curves, (b) DTG curves

Fig.4 Relationship curve

l g β - 1 / T

during pyrolysis

Table 3 Calculation of apparent activation energy of samples by FWO method and Starink method

Fig.5 Relationship curve

l n β T 1.8

1 / T

during pyrolysis

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