Understanding the alkyl effect of geminal dinitropropyl ester energetic plasticizers on hydroxyl terminated polybutadiene (HTPB): Simultaneous tuning on low temperature behavior and processability

doi:10.1016/j.cjche.2022.05.024

中国化学工程学报 ›› 2023, Vol. 54 ›› Issue (2): 364-371.DOI: 10.1016/j.cjche.2022.05.024

• Full Length Article • 上一篇

Understanding the alkyl effect of geminal dinitropropyl ester energetic plasticizers on hydroxyl terminated polybutadiene (HTPB): Simultaneous tuning on low temperature behavior and processability

Baodong Zhao¹, Yinglei Wang^1,2, Fulei Gao¹, Yajing Liu¹, Weixiao Liu¹, Feng Ding¹

1. Xi'an Modern Chemistry Research Institute, Xi'an 710065, China;
2. State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an 710065, China

收稿日期:2021-10-17 修回日期:2022-05-16 出版日期:2023-02-28 发布日期:2023-05-11
通讯作者: Yinglei Wang,E-mail:wangyinglei1983@126.com
基金资助:
The authors wish to thank for financial support of the National Natural Science Foundation of China (21875185).

Understanding the alkyl effect of geminal dinitropropyl ester energetic plasticizers on hydroxyl terminated polybutadiene (HTPB): Simultaneous tuning on low temperature behavior and processability

Baodong Zhao¹, Yinglei Wang^1,2, Fulei Gao¹, Yajing Liu¹, Weixiao Liu¹, Feng Ding¹

1. Xi'an Modern Chemistry Research Institute, Xi'an 710065, China;
2. State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an 710065, China

Received:2021-10-17 Revised:2022-05-16 Online:2023-02-28 Published:2023-05-11
Contact: Yinglei Wang,E-mail:wangyinglei1983@126.com
Supported by:
The authors wish to thank for financial support of the National Natural Science Foundation of China (21875185).

摘要/Abstract

摘要： Geminal dinitropropyl ester plasticizers (DNPEPs) possess excellent energetic performances which provide good potentials as insensitive plasticizer. In this study, we design and synthesize DNPEPs with different alkane chain parts, and systematically investigate their structure–property relationships. Results show that DNPEPs have impact sensitivities all higher than 25.2 J, thermal decomposition temperatures all higher than 254 ℃, and glass transition temperatures (T_g) lower than -90 ℃. Furthermore, the effects of DNPEPs as plasticizer are studied on hydroxyl terminated polybutadiene (HTPB) in detail, including the viscosity, glass transition temperatures and others. It is noteworthy that 2,2-dinitropropyl nonanoate (DNPNc) among these DNPEPs exhibits the most expected simultaneous tuning effects on both viscosity and T_g of HTPB systems, providing favorable potentials to replace the conventional plastizers as dioctyl sebacate (DOS) in the HTPB based propellants and explosives.

关键词: Molecular simulation, Experimental validation, Preparation, Energetic plasticizer, Glass transition temperature, Viscosity

Abstract: Geminal dinitropropyl ester plasticizers (DNPEPs) possess excellent energetic performances which provide good potentials as insensitive plasticizer. In this study, we design and synthesize DNPEPs with different alkane chain parts, and systematically investigate their structure–property relationships. Results show that DNPEPs have impact sensitivities all higher than 25.2 J, thermal decomposition temperatures all higher than 254 ℃, and glass transition temperatures (T_g) lower than -90 ℃. Furthermore, the effects of DNPEPs as plasticizer are studied on hydroxyl terminated polybutadiene (HTPB) in detail, including the viscosity, glass transition temperatures and others. It is noteworthy that 2,2-dinitropropyl nonanoate (DNPNc) among these DNPEPs exhibits the most expected simultaneous tuning effects on both viscosity and T_g of HTPB systems, providing favorable potentials to replace the conventional plastizers as dioctyl sebacate (DOS) in the HTPB based propellants and explosives.

Key words: Molecular simulation, Experimental validation, Preparation, Energetic plasticizer, Glass transition temperature, Viscosity

Baodong Zhao, Yinglei Wang, Fulei Gao, Yajing Liu, Weixiao Liu, Feng Ding. Understanding the alkyl effect of geminal dinitropropyl ester energetic plasticizers on hydroxyl terminated polybutadiene (HTPB): Simultaneous tuning on low temperature behavior and processability[J]. 中国化学工程学报, 2023, 54(2): 364-371.

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Understanding the alkyl effect of geminal dinitropropyl ester energetic plasticizers on hydroxyl terminated polybutadiene (HTPB): Simultaneous tuning on low temperature behavior and processability

Understanding the alkyl effect of geminal dinitropropyl ester energetic plasticizers on hydroxyl terminated polybutadiene (HTPB): Simultaneous tuning on low temperature behavior and processability

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