含能材料2025，Vol.33Issue(10)：1165-1175,11.DOI:10.11943/CJEM2025148
高燃烧热Ti/B/PTFE活性材料动态力学性能及释能特性
Dynamic Mechanical Properties and Energy Release Characteristics of High Combustion Heat Ti/B/PTFE Reactive Materials
摘要
Abstract
Based on the high calorific value of the Ti/B binary system,this study designed and fabricated the Ti/B/PTFE reactive materials with high energy release efficiency.The materials exhibited practical application prospects in the industrial field.To in-vestigate the energy release characteristics of the Ti/B/PTFE reactive materials,the study conducted combustion tests,dynamic mechanical property experiments and ballistic gun experiments.By employing the oxygen bomb calorimeter and the Split Hop-kinson Pressure Bar(SHPB)apparatus,the combustion and dynamic mechanical properties of the Ti/B/PTFE reactive materials were obtained.The influences of PTFE content and ambient atmosphere on the energy release characteristics of Ti/B/PTFE reac-tive materials were analyzed through the confined vessel impact energy release experiments.The study further calculated the en-ergy release efficiency of the Ti/B/PTFE reactive materials under different operating conditions based on the closed tank pressure curves.Results indicate the energy density of Ti/B/10%PTFE reactive materials(26.15 kJ·g-1)and Ti/B/15%PTFE reactive materials(26.47 kJ·g-1)is high than traditional reactive material Al/PTFE(13.89 kJ·g-1).Ti/B/PTFE reactive materials exhibit strain rate ef-fect.With the increase of strain rate,the yield strength of the 10%PTFE specimen increases from 28.3 MPa to 34.2 MPa and that of the 15%PTFE specimen increases from 47.1 MPa to 51.1 MPa.The impact energy release process of Ti/B/PTFE reactive materi-als in confined vessel can be divided into four stages:material destruction,hot spot formation,combustion energy release and pressure relief.The reaction efficiency of Ti/B/PTFE reactive materials depends on the impact velocity.As the impact velocity in-creases,the reaction efficiency improves significantly.Compared with the inert atmosphere,the energy release of Ti/B/PTFE re-active materials is more intense in air.This is attributed to the oxidation reaction between reactive elements and oxygen in the air.关键词
活性材料/动态力学性能/燃烧性能/释能特性/释能效率Key words
reactive material/dynamic mechanical property/combustion performance/energy release characteristic/energy re-lease efficiency分类
武器工业引用本文复制引用
彭喆,刘睿,陈鹏万..高燃烧热Ti/B/PTFE活性材料动态力学性能及释能特性[J].含能材料,2025,33(10):1165-1175,11.基金项目
国家自然科学基金资助(12272051) National Natural Science Foundation of China(No.12272051) （12272051）
