固体添加物粒径对改性双基推进剂力学性能的影响  

The effect of solid additive particle size on the mechanical properties of modified double base propellants

作　　者：熊文慧 邢军 王士欣 卢丙举 XIONG Wenhui;XING Jun;WANG Shixin;LU Bingju(The 713 Research Institute of CSSC,Zhengzhou 450015;Henan Key Laboratory of Underwater Intelligence Equipment,Zhengzhou 450015)

机构地区：[1]中国船舶集团有限公司第七一三研究所,河南郑州450015 [2]河南省水下智能装备重点实验室,河南郑州450015

出　　处：《舰船科学技术》2024年第20期172-176,共5页Ship Science and Technology

基　　金：装备发展部领域基金重点项目(61402070104)。

摘　　要：为研究某型水下武器发射装置中的改性双基推进剂的力学性能,通过调整固体添加物粒径,对比分析不同粒度Al粉和不同粒度SiC/Al_(2)O_(3)的改性双基推进剂力学性能。结果表明,在Al/SiC推进剂中,推进剂的常温抗拉强度和常温最大伸长率随着Al粉粒径的增大呈现先降低后增大的趋势;在不同Al粉粒径下,推进剂的力学性能随SiC粒度变化趋势不同。Al粉粒径为20μm,SiC粒度为W2.5时,低温和常温抗拉强度最大,分别为37.5 MPa和6.58 MPa;Al粉粒径为140μm,SiC粒度为W1.5时,高温抗拉强度最大,为2.22 MPa;加入Al_(2)O_(3)替代SiC后,低温抗拉强度最大为38.3 MPa,比SiC作为弹道稳定剂的推进剂高2.1%,常温抗拉强度最大值高7.1%,高温抗拉强度最大值高4.3%。可见通过调整固体添加物Al粉和SiC/Al_2O_(3)粒径,可实现对改性双基推进剂的力学性能进行局部调控,为水下发射装置的推进剂配方设计提供有效手段。In order to study the mechanical properties of modified double base propellants in a underwater launch device,the mechanical properties of modified double base propellants with different particle sizes of Al powder and SiC/Al_(2)O_(3) were compared and analyzed by adjusting the particle size of solid additives.The results show that in Al/SiC pro-pellants,the tensile strength and maximμm elongation at room temperature of the propellant show a trend of first decreasing and then increasing with the increase of Al powder particle size;The mechanical properties of the propellant exhibit differ-ent trends with the variation of SiC particle size under different Al powder particle sizes.When the particle size of Al powder is 20μm and the particle size of SiC is W2.5,the tensile strength at low temperature and room temperature is the highest,with 37.5 MPa and 6.58 MPa,respectively;When the particle size of Al powder is 140μm and the particle size of SiC is W1.5,the highest high-temperature tensile strength is 2.22 MPa;After adding Al_(2)O_(3) instead of SiC,the maximμm low-tem-perature tensile strength is 38.3 MPa,which is 2.1%higher than the propellant using SiC as a ballistic stabilizer.The maximum low-temperature tensile strength is 7.1%higher,and the maximμm high-temperature tensile strength is 4.3%high-er.It is concluded that by adjusting the solid additives Al powder and SiC/Al_(2)O_(3) particle size,local regulation of the mech-anical properties of modified double base propellants can be achieved,providing effective means for the propellant formula-tion design of underwater launch devices.

关 键 词：改性双基推进剂 添加物 力学性能 抗拉强度 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]