CAJ | 학술논문

选用键合剂LBA-1和热塑性弹性体( TPE)对RDX进行表面包覆改性,并应用于CMDB推进剂中。采用扫描电子显微镜( SEM)表征了RDX包覆前后颗粒表面的变化情况,同时,分别测试了RDX包覆前后和制备的CMDB推进剂的摩擦感度和撞击感度,并且对含包覆RDX的CMDB推进剂的力学性能和燃烧性能进行了表征。结果表明,经包覆改性后降感效果均明显,其中键合剂包覆的RDX,摩擦感度降低了68％,对应的CMDB推进剂,摩擦感度降低了37.5％。两种材料包覆改性RDX对推进剂的力学性能均有明显的改善,其中经热塑性弹性体包覆改性后,RDX-CMDB推进剂的抗拉强度提高了4.72 MPa,延伸率提高了19.67％；对推进剂的燃烧性能有一定的影响。
선용건합제LBA-1화열소성탄성체( TPE)대RDX진행표면포복개성,병응용우CMDB추진제중。채용소묘전자현미경( SEM)표정료RDX포복전후과립표면적변화정황,동시,분별측시료RDX포복전후화제비적CMDB추진제적마찰감도화당격감도,병차대함포복RDX적CMDB추진제적역학성능화연소성능진행료표정。결과표명,경포복개성후강감효과균명현,기중건합제포복적RDX,마찰감도강저료68％,대응적CMDB추진제,마찰감도강저료37.5％。량충재료포복개성RDX대추진제적역학성능균유명현적개선,기중경열소성탄성체포복개성후,RDX-CMDB추진제적항랍강도제고료4.72 MPa,연신솔제고료19.67％；대추진제적연소성능유일정적영향。
RDX was surface coated and modified with bonding agent LBA-1and thermoplastic elastomer(TPE), and then was applied in the CMDB propellant. Scanning Electron Microscopy ( SEM) was used to characterize the particle sur-face of RDX before and after coating. The friction and impact sensitivities of the RDX before and after coating and RDX-CMDB propellant were studied. Furthermore, the combustion and mechanical properties of the RDX-CMDB propellant were characterized. The results show that, compared with the uncoated RDX, the friction sensitivity of the coated RDX with bonding agent and corresponding RDX-CMDB reduce by 68% and 37. 5%, respectively. What??s more, surface coated RDX had a significant effect on the mechanical properties of the propellant. For example, the tensile strength and elongation of the RDX-CMDB were increased by 4. 72 MPa and 19. 67%, respectively, after coating of RDX with thermoplastic elasto-mer;and RDX coated with these two materials also exhibited a certain effect on the combustion properties of the propellant.