Issue 31, 2022
From the journal:

RSC Advances

Synthesis of two novel neutral polymeric bonding agents to enhance the mechanical properties of composite solid propellants†

Zhuo Wu,ab   Jian Zhang, ORCID logo a   Shuang Xu,b   Hongxu Li,b   Huan Zhou,b   Jian Zheng,c   Aimin Pang*b  and  Yulin Yang ORCID logo *a  

* Corresponding authors

a MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
E-mail: ylyang@hit.edu.cn

b Science and Technology on Aerospace Chemical Power Laboratory, Hubei Institute of Aerospace Chemical Technology, Xiangyang, Hubei, China

c China Aerospace Science and Technology Corporation, 16 Fucheng Road, Haidian District, Beijing 100048, China

Abstract

Currently, only a few bonding agents can be utilized efficiently in nitramine filler material-based solid rocket energetic binder systems. Herein, we demonstrate the synthesis and specific characterization of two kinds of neutral polymeric bonding agents (NPBA-1 and NPBA-2) and their application in composite propellants consisting of the nitramine octogen (HMX) and glycidyl azide polymer (GAP). The as-obtained NPBAs were well-coated on the surface of HMX and RDX due to their functionalized groups, and they significantly affected the viscosity of the uncured propellant mixtures and possessed obviously enhanced mechanical properties in the cured AP/HMX/GAP propellant mixtures, even at low concentrations (down to 0.001 wt% of the whole propellant). In addition, because of the existence of an epoxy group and no hydroxyl functionalities, NPBA-2 exhibited improved mechanical strength and glass transition temperature as compared to NPBA-1, which has plenty of reactive hydroxyl groups. The as-synthesized epoxy-modified NPBAs are essential for obtaining NEPE propellants with high bonding and mechanical properties.

Graphical abstract: Synthesis of two novel neutral polymeric bonding agents to enhance the mechanical properties of composite solid propellants

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Article information

DOI
https://doi.org/10.1039/D2RA01842J
Article type
Paper
Submitted
22 Mar 2022
Accepted
23 Jun 2022
First published
08 Jul 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 19946-19952

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Synthesis of two novel neutral polymeric bonding agents to enhance the mechanical properties of composite solid propellants

Z. Wu, J. Zhang, S. Xu, H. Li, H. Zhou, J. Zheng, A. Pang and Y. Yang, RSC Adv., 2022, 12, 19946 DOI: 10.1039/D2RA01842J

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