含能材料Issue(5)：669-673,5.DOI:10.3969/j.issn.1006-9941.2014.05.017
AP／HTPB 老化复合底排推进剂热物性实验研究
Experimental Study of Thermal Physical Property of Aged AP/HTPB Composite Base Bleed Propellant
摘要
Abstract
To research the ignition and combustion characteristics of base bleed propellant in the base bleed unit and improve the accuracy of numerical simulation,the specific heat capacity and conductivity coefficient for unaged and naturally aged(stored in a sealed plastic bag under room temperature)AP /HTPB base bleed propellant used in a 155mm base bleed projectile were deter-mined by differential scanning calorimeter(DSC)and conductometer,respectively. Results show that the maximum endothermic peak temperature and the maximum exothermlic peak temperature on DSC curve of the aged base bleed propellant at a heating rate of 20 ℃·min -1 are 253. 52 ℃ and 437. 54 ℃,respectively. The function of specific heat capacity as temperature with in 40 -180 ℃ is obtained based on DSC curves by polynomial fitting method. The average specific heat capacity and conductivity coefficient are 0.9868 kJ·kg-1 ·℃ -1 and 0. 2292 W · m-1 · K-1 for the aged base bleed propellant and 0. 8887 kJ · kg-1 ·℃ -1 and 0.4020 W·m-1 ·K-1 for unaged base bleed propellant,respectively. In comparison with unaged base bleed propellant,the aver-age specific heat capacity of aged base bleed propellant increases about 11% ,whereas conductivity coefficient of aged bleed pro-pellant decreases about 43% .关键词
军事化学/AP /HTPB 复合底排药剂/比热容/导热系数/自然老化Key words
military chemistry/AP /HTPB composite base bleed propellant/specific heat capacity/conductivity coefficient/naturally aged分类
军事科技引用本文复制引用
张领科,赵威,余永刚..AP／HTPB 老化复合底排推进剂热物性实验研究[J].含能材料,2014,(5):669-673,5.基金项目
国家自然科学基金资助 （）
