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Thermal stability assessment of 4,4′-azo-bis(1,2,4-triazolone) (ZTO) and its salts by accelerating rate calorimeter (ARC)

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Abstract

The thermal decomposition behaviors of 4,4′-azo-bis(1,2,4-triazolone) (ZTO) and its salts were investigated for the first time by using accelerating rate calorimetry. Based on the experimental results, the kinetic parameters of exothermic reaction of ZTO and its salts were calculated. The thermal decomposition parameters, including the initial decomposition temperature, the adiabatic temperature rise rate, were obtained from the thermal inertia factor. The adiabatic experiment revealed that ZTO and KZTO·H2O both had a relatively high initial exothermic decomposition temperature at 230.6 and 235.6 °C, respectively. The maximum self-heating rate of exothermic process of ZTO was 105.9 °C min−1 (at 248.7 °C), which meant that ZTO decomposed very fast. In addition, the reaction order, apparent activated energy (E a), and pre-exponential factor (A) were also calculated.

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Abbreviations

Φ :

Thermal inertia factor

T 0/°C:

Initial self-heat temperature

T f/°C:

Final decomposition temperature

∆T ad/°C:

Adiabatic temperature rise

m 0/°C min−1 :

Initial temperature rise rate

m m/°C min−1 :

Maximum temperature rise rate

T m/°C:

Temperature of maximum temperature rise rate

θ m/min:

Time of maximum temperature rise rate

E a/kJ mol−1 :

The apparent activation energy

R :

The gas constant

A :

Pre-exponential factor

r :

Correlation coefficient

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Acknowledgements

The authors gratefully acknowledge the financial support by Natural Science Foundation of Guangdong (Grant Nos. 2014A030313559, 2016A030313050), the Nanshan District Key Lab for Biopolymers and Safety Evaluation (No. KC2014ZDZJ0001A), and the Science and Technology Project of Shenzhen City (Grant Nos. JCYJ20140828163633993, CYZZ20150827160341635, ZDSYS201507141105130, and JCYJ20170412105034748). We are indebted to Dr. Zhang Guangyuan who works in Gansu Yinguang Chem Ind Grp Co., Ltd., for considerable assistance with ARC testing.

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Authors and Affiliations

  1. Guangdong Research Center for Interfacial Engineering of Functional Materials; Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China

    Jiaping Zhu, Bin Cheng, Keyao Li, Xierong Zeng & Shaojun Chen

  2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China

    Jiaping Zhu, Bin Cheng & Xierong Zeng

  3. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China

    Shaohua Jin

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  1. Jiaping Zhu
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  2. Shaohua Jin
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  3. Bin Cheng
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  4. Keyao Li
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  5. Xierong Zeng
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Correspondence to Xierong Zeng or Shaojun Chen.

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Zhu, J., Jin, S., Cheng, B. et al. Thermal stability assessment of 4,4′-azo-bis(1,2,4-triazolone) (ZTO) and its salts by accelerating rate calorimeter (ARC). J Therm Anal Calorim 132, 563–569 (2018). https://doi.org/10.1007/s10973-017-6896-x

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  • DOI: https://doi.org/10.1007/s10973-017-6896-x

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