Phosphorus and bromine modified epoxy resin with enhanced cryogenic mechanical properties and liquid oxygen compatibility simultaneously

Zili Zhou; Jian Qian; Jian Zhang; Yongshuang Cui; Yuanqing Li; Di Tan; Junfei Long; Huiqiang Wu; Qun Liu; Fangliang Guo; Baogang Sun; Hanqiao Shi; Ning Hu; Shaoyun Fu

Polymer Testing (Feb 2021)

Phosphorus and bromine modified epoxy resin with enhanced cryogenic mechanical properties and liquid oxygen compatibility simultaneously

Zili Zhou,
Jian Qian,
Jian Zhang,
Yongshuang Cui,
Yuanqing Li,
Di Tan,
Junfei Long,
Huiqiang Wu,
Qun Liu,
Fangliang Guo,
Baogang Sun,
Hanqiao Shi,
Ning Hu,
Shaoyun Fu

Affiliations

Zili Zhou: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
Jian Qian: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
Jian Zhang: Beijing Institute of Astronautical Systems Engineering, Beijing, 100076, China
Yongshuang Cui: China Aerospace Academy of Systems Science and Engineering, Beijing, 100048, China
Yuanqing Li: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China; State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, 400044, China; Corresponding author. College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China.
Di Tan: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
Junfei Long: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
Huiqiang Wu: Beijing Institute of Astronautical Systems Engineering, Beijing, 100076, China
Qun Liu: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
Fangliang Guo: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
Baogang Sun: Aerospace Research Institute of Materials & Processing Technology, Beijing, 100076, China
Hanqiao Shi: Aerospace Research Institute of Materials & Processing Technology, Beijing, 100076, China
Ning Hu: State Key Laboratory of Reliability and Intelligence Electrical Equipment, Hebei University of Technology, Tianjin, 300130, China; National Engineering Research Center for Technological Innovation Method and Tool, and School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300401, China
Shaoyun Fu: College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China; State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, 400044, China; Corresponding author. College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China.

Journal volume & issue: Vol. 94
p. 107051

Abstract

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Herein, epoxy resins for composite liquid oxygen (LOX) fuel tanks are modified with phosphorous flame retardant (DOPO) and brominated epoxy resin (EX48). With the incorporation of DOPO and EX48, the processing properties requirements for the hot-melt prepreg are contented with the significantly enhanced viscosity of the modified epoxy resin. At the same time, the tensile performance, flexural performance and fracture toughness of epoxy resin at room temperature and 90 K are improved with the introduction of DOPO and EX48. In addition, the epoxy resin of EP/P7.7/Br40 offers a highest limited oxygen index of 33.5% and a lowest LOX impact sensitivity of 5% with the eliminated LOX incompatible reactions including explosion and combustion. Consideration of the excellent cryogenic mechanical properties and LOX compatibility, combined with ideal viscosity for hot-melt prepreg preparation, the epoxy resin modified with DOPO and EX48 simultaneously is attractive as the polymer matrix for composite LOX fuel tanks.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

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