不同配方硝基胍发射药流变性能规律研究

摘要硝基胍发射药是一种添加了固体填料的聚合物填充体系，通常使用挤出成型制造。发射药的不同配方、不同成型温度等工艺条件都会对挤出过程中发射药的流变行为产生影响，研究其流变性能对于保证发射药加工质量具有重要意义。本实验首先制备不同含量、不同溶剂比的硝基胍发射药，然后使用毛细管流变仪对塑化好的硝基胍发射药进行流变实验，测定不同配方的硝基胍发射药在 25℃、30℃、35℃、40℃下的流变行为，并且选取了修正 Bingham模型、Cross 模型和幂律模型对药料流变行为进行拟合，比较三者对药料流变行为拟合程度的优劣，发现幂律方程的拟合程度最高，并求出各实验条件下，硝基胍发射药对应的幂律方程。42448
毕业论文关键词：发射药，挤出成型，工艺条件，流变行为，幂律方程
Title The Effect of Different Formulations and Different Forming Temperatures on The Rheological Behavior of Nitroguanidine Propellant
Abstract Nitroguanidine-based propellant is a polymer filled with solid filler and the extrusion molding is generally used in its processing. Different formulations, different forming temperatures and different solvent ratios have an effect on the rheological behavior of nitroguanidine-based propellant, which influences the quality of final product. Therefore, the study of the rheological behavior of nitroguanidine-based propellant is an important way to improve the quality of propellant processing. In this experiment, propellants of different nitroguanidine content were made first. The rheological behavior of nitroguanidine-based propellant doughs was measured with an extrusion rheometer at temperatures of 25℃, 30℃, 35℃ and 40℃, using capillary dies. The modified Bingham model, Cross model, and Power Law model was chosen to fit the rheological behavior of doughs, and the fitting degrees of them were compared. It was found that the Power Law model had the highest fitting degress and the Power Law equations of propellant doughs in different experimental conditions were obtained by fitting curves.
Keywords: Propellant, Extrusion Molding, Process Conditions, Rheological Behavior, Power Law Equation

1引言1

1.1研究背景1

1.2火药的能量集约1

1.3发射药的种类..2

1.4发射药的流变行为国内外研究进展..3

2硝基胍发射药的流变性..4

2.1硝基胍发射药的制造工艺.4

2.1.1溶剂法4

2.1.2无溶剂法（干法）..5

2.1.3半溶剂法.5

2.1.4三基药不同制造工艺间的比较.6

2.2聚合物流变学..7

2.2.1牛顿流体.7

2.2.2非牛顿流体..8

2.2.3聚合物的普适流动曲线.9

2.2.4Bird-Carreau模型10

2.2.5幂律模型10

3发射药流变性能测试10

3.1发射药药料的制备11

3.2毛细管流变测试..11

3.2.1实验材料及仪器11

3.2.2实验步骤13

4数据处理与分析.13

4.1温度对硝基胍发射药流变性能的影响..13

4.1.140%含量硝基胍发射药（溶剂比0.23）..13

4.1.245%硝基胍含量发射药.15

4.1.350%硝基胍含量发射药.17

4.1.4Arrhenius方程.18

4.1.5小结.20

4.2硝基胍含量对硝基胍发射药流变性能的影响20

4.3不同溶剂比对硝基胍发射药流变性能的影响21

4.4流变模型的匹配..22 不同配方硝基胍发射药流变性能规律研究:http://www.751com.cn/huaxue/lunwen_42879.html