摘要
介绍了热加速老化试验预估火药安全贮存寿命的方法原理。对硝酸酯火药进行不同温度(95,90,85,75和65℃)的热加速老化。以有效安定剂消耗一半所需时间(τ)作为安全贮存寿命的临界点,对不同温度(t)下的τ值,用线性最小二乘法按B ethe lot方程进行线性回归,预测了硝酸酯火药在常温(30℃)下的安全贮存寿命。收集了80余种硝酸酯火药安全贮存寿命的预估结果。结果发现,一般单基、双基、三基发射药和双基推进剂的安全贮存寿命在40 a以上,而加入AP、TEGN等成分改性的双基发射药和推进剂安全贮存寿命大多低于40 a。比较了4个温度点与5个温度点回归处理结果的差异。提出取消90℃试验,必要时增加55℃试验的建议。根据硝酸酯火药老化分解速率的温度系数和低温试验统计结果,提出单温度(65℃)短周期预测硝酸酯火药安全贮存寿命的简便方法。
The principle and method of estimating the safe storage life of propellants using the thermal accelerating aging test. The thermal accelerated aging for nitrate propellants was carried out at temperatures of 95,90,85,75 and 65 ℃. The time required to consume the effective stabilizer of 50% defined as the end point of safe storage life of nitrate propellants, The values of the end point （τ） at various aging temperatures （t） are fitted to Bethelot＇s equation t=a＋blgr by regression analysis. The safe storage life at 30C was estimated. The estimated results of safe storage life for 80 kinds of nitrate propellants are collected. The results show that the estimated values of safe storage life for single-base, double-base and tri-base gun propellants and double-base propellant are more than 40 years, but those for modified double-base propellant containing ammonium perchlorate and nitrotriglycol are less than 40 years. The differences between results obtained from four and five temperature points by regression analysis are compared. A proposition of deleting the aging test at 90℃ and adding the test at 55℃ is presented. Based on statistical results of low temperature tests and temperature coefficient of aging decomposition rate, a simple approach of estimating the safe storage life for nitrate propellants from the aging test for short period at a single temperature（65℃） is proposed. ,
出处
《火炸药学报》
EI
CAS
CSCD
2006年第4期71-76,共6页
Chinese Journal of Explosives & Propellants
关键词
物理化学
硝酸酯火药
有效安定剂
安全贮存寿命
预估方法
physical chemistry
nitrate propellant
effective stabilizer
safe storage life
estimation method
作者简介
衡淑云（1957-），女，高级工程师，从事火炸药热化学特性和寿命评估研究。
