火炸药学报2024，Vol.47Issue(4)：372-380,9.DOI:10.14077/j.issn.1007-7812.202303027
硝化棉质量差异分析及其对推进剂制品性能的影响
Analysis of Quality Difference of Nitrocellulose and Its Influence on the Propellant Products Properties
摘要
Abstract
To ascertain the effect of D-grade nitrocellulose's(NC)quality variation on its physicochemical properties as well as its propellant products,the"eight major properties",molecular mass,molecular mass distribution,and nitrification uni-formity of four types of NC samples of different manufacturers and batches were characterized.The CMDB propellant contai-ning four types of NC samples were also prepared,the mechanical and combustion properties were compared.The results show that the"eight major properties"of 4 types of NC samples meet the requirements of the national military standard.The average nitrogen content of 4 types of NC samples is in the range of 11.9％-12.1％,the molecular mass measured by GPC method is in the range of 0.59×105-0.73×105 g/mol.A small decrease in the nitrogen content of NC results in an increase in its stability,but has little effect on the combustion performance of its propellant products.When the nitrogen content and molecular mass are close,the presence of high molecular mass components increases the viscosity of dilute solu-tions of NC samples.The decrease in the uniformity of NC molecular mass and nitrogen content causes the propellant tensile strength decrease at-40 ℃.关键词
物理化学/硝化棉/NC/CMDB推进剂/硝化均匀性/燃烧性能/安定性Key words
physical chemistry/nitrocellulose/NC/CMDB propellant/nitrification uniformity/combustion properties/stability分类
军事科技引用本文复制引用
肖立群,屈蓓,周文静,刘小刚,刘红妮,李吉祯..硝化棉质量差异分析及其对推进剂制品性能的影响[J].火炸药学报,2024,47(4):372-380,9.基金项目
国家自然科学基金(No.22205179) （No.22205179）
