含能材料2025，Vol.33Issue(12)：1385-1394,10.DOI:10.11943/CJEM2025176
基于丁羟推进剂的双组分药浆的静态混合法制备
Preparation of HTPB Propellant by Mixing Two-Component Slurry with a Static Mixer
任丽媛 1陈建发 2徐纪琳 2肖乐勤 1魏娇 3周伟良1
作者信息
- 1. 南京理工大学化学与化工学院,江苏 南京 210094
- 2. 上海航天动力技术研究所,浙江 湖州 313000
- 3. 西安北方惠安化学工业有限公司,陕西 西安 710302
- 折叠
摘要
Abstract
To address the issues of large in-process quantities and strict pot-life demands of slurry in traditional one-pot propellant slurry mixing,a static mixer mixing technique was designed and developed.In this technique,the pre-prepared binder slurry and curing agent slurry are stored separately in reservoirs,metered by screw pumps,extruded into a static mixer for blending,and then directly cast.Computational Fluid Dynamics(CFD)simulations were used to generate cloud images of the mixing pro-cess of a two-component slurry in a static mixer under typical conditions.A two-component curing system suitable for the static mixer mixing process was designed and synthesized.Based on this curing system,using K2SO4 and CaCO3 as simulated oxidiz-ers,a simulated oxidizer propellant with a solid content of 85％and without the addition of a bonding agent was prepared via the static mixer mixing process.The mechanical properties and microstructure of the propellant were characterized.Results indi-cate that the static mixer achieved homogeneous mixing of the two-component slurry.The resulting propellant exhibited a tensile strength of 0.4 MPa and an elongation at break of 37.5％,with a fracture surface that was dense and uniform,showing no cracks or voids.The static mixer mixing process offers advantages of small in-process quantity and no requirement for pot life of the slurry.关键词
复合固体推进剂/混合工艺/静态混合器/端羟基聚丁二烯Key words
composite solid propellant/mixing process/static mixer/hydroxyl-terminated polybutadiene分类
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任丽媛,陈建发,徐纪琳,肖乐勤,魏娇,周伟良..基于丁羟推进剂的双组分药浆的静态混合法制备[J].含能材料,2025,33(12):1385-1394,10.
