Combustion and mechanical property enhancement strategy based on SA surface activated boron powders

Author:

Lu Jiaxin1,Chen Chong1,Zhang Bobo1,Niu Kang1,Xiao Fei1,Liang Taixin1

Affiliation:

1. North University of China

Abstract

Abstract

Boric acid and other impurities on the surface of boron (B) particles can interact with hydroxyl-terminated polybutadiene (HTPB), which can weak the mechanical properties and energy release efficiency of boron-based solid rocket propellants. In this paper, solvent evaporation induced self-assembly was used to coat the surface of B particles with stearic acid (SA) and the SA@B composite particles were prepared. The effects of SA coating on the combustion performance of B particles and the mechanical properties of HTPB matrix composites were investigated. The results showed that the SA coating enhanced the oxidation efficiency of B particles in air. The heat of combustion value of the SA@B composite particles, reached up to 30.29 MJ/g. During the combustion of SA@B composite particles, there are fewer molten solid particles surrounding the flame, which enhances the stability of B particles combustion process. Furthermore, the SA coating effectively enhanced the dispersion of B particles in HTPB. At a stretching speed of 100 mm/min, the tensile strength of the SA@B/HTPB composite materials is higher than that of the B/HTPB composite materials. Moreover, when the mass loading of the SA@B composite particles reaches 50 wt%, the tensile strength of SA@B/HTPB composite materials achieves 0.63 MPa. The compatibility between B particles and HTPB can be effectively improved by surface-activated B particles with SA, which is of great significance for the storage stability of boron-based solid rocket propellants.

Publisher

Research Square Platform LLC

Reference53 articles.

1. Modeling of combustion and ignition of solid-propellant ingredients;Beckstead MW;Progress in Energy and Combustion Science,2007

2. Boron-based composite energetic materials (B-CEMs): Preparation, combustion and applications;Pang W-Q;Progress in Energy and Combustion Science,2022

3. Recent advances in new oxidizers for solid rocket propulsion;Trache D;Green Chemistry,2017

4. Recent advances on the preparation and combustion performances of boron-based alloy fuels;Yang D;Fuel,2023

5. Combustion performance studies of aluminum and boron based composite solid propellants in sub-atmospheric pressure regimes;Kumar P;Propulsion and Power Research,2019

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3