An experimental study of the combustion characteristics of novel Al/MO_x/PVDF metastable intermixed composites

Wenchao Zhang; Kunyu Xiong; Zhimin FanYao ShuPeijin LiuQi-long YanWen Ao

首页> 外文期刊>Aerospace science and technology >An experimental study of the combustion characteristics of novel Al/MO_x/PVDF metastable intermixed composites

【24h】

An experimental study of the combustion characteristics of novel Al/MO_x/PVDF metastable intermixed composites

机译：An experimental study of the combustion characteristics of novel Al/MO_x/PVDF metastable intermixed composites

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

The combustion of metastable intermixed composites (MICs) containing fluoropolymers is yet still not well understood. In this study, five new Al/MOx/PVDF nanocomposites (MO_x: WO_2, WO_3, CuO, Fe_2O_3, Bi_2O_3) are prepared using a high-energy ball milling method. The thermal decomposition behaviors, combustion characteristics, and combustion products of the MICs are compared using TG-DSC, laser ignition test, and a multifunctional combustion diagnostic system. It is proved that PVDF efficiently promotes the energy release of conventional thermites. All five composites show a higher heat of reaction than Al/MO_x in an argon environment by over 30%. Al/WO_3/PVDF has the fastest combustion propagation speed in the confined combustor (72.5 mm·s~(-1)). Due to the low boiling temperature and low thermal conductivity of the product, A1/Bl_2O_3/PVDF exhibits the lowest ignition delay (62 ms), the best pressure output performance (27.5 MPa·s~(-1)), and the least product agglomeration (D_(43) = 15.2 urn). Due to the highest heat of reaction (3829 J·g~(-1)). AI/CuO/PVDF has the highest flame temperature (2544 ℃). The combustion flame temperature of Al/MOx/PVDF nanocomposites is suggested to be controlled by the heat of reaction, the ignition delay is mainly controlled by the thermal conductivity of the material, and the main factor affecting the high pressure output is the boiling point of the combustion products. This study can provide a theoretical basis for the development and application of MICs.

著录项

来源
《Aerospace science and technology》 |2023年第6期|108263.1-108263.12|共12页
作者
Wenchao Zhang; Kunyu Xiong; Zhimin FanYao ShuPeijin LiuQi-long YanWen Ao;
展开▼
作者单位

Science and Technology on Combustion, Internal Flow and Thermo-Structure Laboratory, Northwestern Polytechnical University, Xi'an, 710072, China;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
MICs; PVDF; High energy density; Combustion; lame temperature; Pressure output;

An experimental study of the combustion characteristics of novel Al/MO_x/PVDF metastable intermixed composites

摘要

著录项

相关主题

期刊订阅