短切碳纤维对AP/HTPB底排推进剂力学性能的影响  

Effect of Short Carbon Fibers on Mechanical Properties of AP/HTPB Base Bleed Propellant

作　　者：刘志林[1] 姚文进[1] 王晓鸣[1] 李文彬[1] 高翔[1] 

机构地区：[1]南京理工大学智能弹药技术国防重点学科实验室,江苏南京210094

出　　处：《含能材料》2017年第5期366-371,共6页Chinese Journal of Energetic Materials

基　　金：中央高校基本科研业务费专项资金资助(30915118811);国家自然科学基金(11602111)

摘　　要：为了提高高氯酸铵(AP)/端羟基聚丁二烯(HTPB)底排推进剂的力学性能,在原始AP/HTPB底排推进剂配方中添加质量分数分别为0.3%和0.5%的2 mm短切碳纤维。对含短切碳纤维的AP/HTPB底排推进剂进行静态单轴拉伸、压缩性能实验。用扫描电镜(SEM)进行试件断裂面微观分析。实验结果表明:添加质量分数为0.3%和0.5%的2 mm碳纤维的AP/HTPB底排推进剂的拉伸强度分别提高了11.7%和33.0%,压缩强度分别提高2.1%和7.8%。短切碳纤维分布在HTPB基体中。短切碳纤维与HTPB基体的黏结性能良好。新型含短切碳纤维的AP/HTPB底排推进剂的破坏主要由AP颗粒脱粘引发。短切碳纤维对HTPB基体中微裂纹的发展有抑制作用。显示短切碳纤维是良好的AP/HTPB底排推进剂的增强体。To improve the mechanical properties of ammonium perchlorate（AP）/ hydroyl-terminated polybutadiene（HTPB） base bleed propellants, the 2 mm short carbon fibers of mass fraction as 0.3% and 0.5% respectively were added in the original AP/HTPB base bleed propellant formulation. The static uniaxial compression and tensile tests for AP/HTPB base bleed propellants containing short carbon fibers were conducted. The microscopic analysis of fracture surface for specimens was performed by SEM. Experimental results show that the tensile strength of AP/HTPB base bleed propellants of adding 2 mm short carbon fibers of mass fraction as 0.3% and 0.5% increases by 11.7% and 33.0% respectively and their compression strength increases by 2.1% and 7.8% respectively. The short carbon fibers are distributed in the HTPB matrix. The bonding property between short carbon fibers and HTPB matrix is good. The damage of new AP/HTPB base bleed propellants containing short carbon fibers is mainly caused by debonding of the AP particles. The short carbon fibers in AP/HTPB base bleed propellants have an inhibitory effect on microcrack development, which demonstrates the short carbon fiber is a good reinforcement material for AP/HTPB base bleed propellants.

关 键 词：高氯酸铵(AP)/端羟基聚丁二烯(HTPB)底排推进剂 短切碳纤维 力学性能 扫描电镜分析 脱粘 

分 类 号：V51[航空宇航科学与技术—航空宇航推进理论与工程]