摘要
为改善双基推进剂的低温力学性能,将纤维素通过碱化、醚化转变成纤维素甘油醚,再经硝化得到不同醚化度、酯化度的NGEC。测定和分析了NGEC基和NC基双基推进剂的力学和能量特性,电镜扫描观察了拉伸膜断截面喷金后的端面形貌。结果表明,NGEC双基推进剂的力学性能、爆热和比容均高于NC双基推进剂,制品内部结构均匀,抗压强度(+50℃)σm≥11.0M Pa,延伸率(25℃)εm≥40%,比冲达到2 218.1N.s.kg-1。
In order to enhance the mechanical performance of double-base propellant at low temperature, the cellulose was converted to cellulose glycidyl via basification and etherization reactions. A novel energetic binder named nitric acid ester of cellulose glycidyl ether （NGEC）with different esterification and etherification degree was synthesized by nitrating cellulose glycidyl. The mechanical performance and the section appearance of the two double base propellants based on NGEC and NC were surveyed and analyzed. The detonation heat and specific volume of the two propellants were tested and contrasted. The results show that the double-base propellant based on NGEC has better mechanical performance, detonation heat and specific volume level overaging those of double base propellant based on NC and its inner-structure turns more uniform. Its compressive strength σm （＋50℃ ）, elongation εm（25℃ ） and specific impulse are no less than 11.0MPa and 40% and 2 218N · s . kg^-1,respectively.
出处
《火炸药学报》
EI
CAS
CSCD
2006年第6期51-53,共3页
Chinese Journal of Explosives & Propellants
关键词
应用化学
纤维素甘油醚硝酸酯
改性双基推进剂
能量特性
力学性能
applied chemistry nitric acid ester of cellulose glycidyl ether modified double base propellant
energetic characteristics
mechanical performance
