Determination of the thermal hazard and decomposition behaviors of 2,2'-azobis-(2,4-dimethylvaleronitrile).
Saved in:
| Title: | Determination of the thermal hazard and decomposition behaviors of 2,2'-azobis-(2,4-dimethylvaleronitrile). |
|---|---|
| Authors: | Liu, Shang-Hao1 shliu998@163.com, Lu, Yi-Ming2, Chiang, Chin-Lung3 dragon@sunrise.hk.edu.tw, Cao, Chen-Rui2 |
| Source: | Process Safety & Environmental Protection: Transactions of the Institution of Chemical Engineers Part B. Nov2019, Vol. 131, p55-62. 8p. |
| Subject Terms: | Differential scanning calorimetry, Azo compounds, Critical temperature, Thermal stability, Thermal properties |
| Abstract: | Azo compounds, which are commonly used in radical polymerization reactions, readily demonstrate their self-reactive properties. Because of their sensitive thermal decomposition properties, azo compounds have been responsible for many accidents. To avoid unexpected thermal decomposition in the workplace, information about the thermal stability and other properties of azo compounds should be provided to on-site personnel in industries that use these materials. In this study, the target substance, 2,2'-azobis-(2,4-dimethylvaleronitrile) (ABVN), is shown to have a higher reactivity than other azo compounds, and its thermal decomposition characteristics are discussed based on a literature review and results from differential scanning calorimetry (DSC) and accelerating rate calorimetry (ARC). A thermokinetic analysis of ABVN is conducted using DSC and ARC data. The results can provide process-control data and explain the effects of thermal runway for ABVN. In addition, based on applied numerical methods, critical runaway temperatures, stable temperatures, and the required heat dissipation rate for the prevention of the thermal runaway reactions are calculated using a process deviation analysis. The results show that the reactant quantities and the process parameters must be strictly controlled to achieve the desired reaction. [ABSTRACT FROM AUTHOR] |
| Copyright of Process Safety & Environmental Protection: Transactions of the Institution of Chemical Engineers Part B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
|
Full text is not displayed to guests.
Login for full access.
|
|
Be the first to leave a comment!
