高含能固体含量的HTPB推进剂配方研究
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摘要
为进一步提高HTPB(端羟基聚丁二烯)推进剂的能量水平,采用最小自由能平衡流法对HTPB推进剂能量特性进行了理论计算,通过2、10、25、100 L混合锅研究了含能固体含量对HTPB推进剂的能量特性、燃烧性能、工艺性能和力学性能的影响。结果表明:随含能固体含量的增加,推进剂理论比冲增加,当w(含能固体)为89.0%(高氯酸铵61.5%、黑索今9.0%、铝粉18.5%)时,实测比冲为2 513.7 N·s/kg,密度≥1.80 g/cm3,在最大拉伸强度(20℃)≥0.75 MPa的基础上,–40、20、55℃下,最大伸长率≥45%,燃速(6.865 MPa)≥10 mm/s,且具有药浆黏度增长缓慢,流动流平性好的特点。
In order to further improve the energy level of the HTPB(hydroxyl-terminated polybutadiene) propellant, the energy characteristics of HTPB propellant were theoretically calculated by using the minimum free energy balance flow method. The influence of the energetic solid content on the energy characteristics, combustion performance, process performance and mechanical performance of the HTPB propellant was investigated by using 2 L, 10 L, 25 L and 100 L mixed pots. The results show that with increasing of the energetic solid content, the theory specific impulse of the propellant increases. When the w(energetic solid) is 89.0%(ammonium perchlorate 61.5%, RDX 9.0%, A1 powder 18.5%), the measured specific impulse is 2513.7 N-s/kg, the density is not less than 1.80 g/cm~3. On the basis of the maximum tensile strength(20 ℃) of not less than 0.75 MPa, under-40 ℃ 20 ℃ and 55 ℃, the maximum elongation is not less than 45%, the burning rate(6.865 MPa) is not less than 10 mm/s, and the propellant possesses the characteristics of slow growth of slurry viscosity and good flow levelling property.
In order to further improve the energy level of the HTPB(hydroxyl-terminated polybutadiene) propellant, the energy characteristics of HTPB propellant were theoretically calculated by using the minimum free energy balance flow method. The influence of the energetic solid content on the energy characteristics, combustion performance, process performance and mechanical performance of the HTPB propellant was investigated by using 2 L, 10 L, 25 L and 100 L mixed pots. The results show that with increasing of the energetic solid content, the theory specific impulse of the propellant increases. When the w(energetic solid) is 89.0%(ammonium perchlorate 61.5%, RDX 9.0%, A1 powder 18.5%), the measured specific impulse is 2513.7 N-s/kg, the density is not less than 1.80 g/cm~3. On the basis of the maximum tensile strength(20 ℃) of not less than 0.75 MPa, under-40 ℃ 20 ℃ and 55 ℃, the maximum elongation is not less than 45%, the burning rate(6.865 MPa) is not less than 10 mm/s, and the propellant possesses the characteristics of slow growth of slurry viscosity and good flow levelling property.
引文
[1]袁桂芳,胡建军,赵文胜,等.含RDX的硝胺丁羟推进剂能量特性研究[J].含能材料, 2002, 10(4):157—160.
[2]胡建军,袁桂芳.四组元高能量特性丁羟推进剂发展状况[J].湖北航天科技, 2000(2):24—31.
[3]刘继华.火药物理化学性能[M].北京:北京理工大学出版社, 1997.
[4]庞爱民.固体火箭推进剂理论与工程[M].北京:中国宇航出版社, 2014.
[5]刘长宝,刘云飞,姚维尚.高固体含量丁羟推进剂性能研究[J].含能材料, 2007, 15(1):42—46.
[6]袁桂芳,胡建军,赵文胜,等.含RDX的硝胺丁羟推进剂能量特性研究[J].含能材料, 2002, 10(4):157—160.
[2]胡建军,袁桂芳.四组元高能量特性丁羟推进剂发展状况[J].湖北航天科技, 2000(2):24—31.
[3]刘继华.火药物理化学性能[M].北京:北京理工大学出版社, 1997.
[4]庞爱民.固体火箭推进剂理论与工程[M].北京:中国宇航出版社, 2014.
[5]刘长宝,刘云飞,姚维尚.高固体含量丁羟推进剂性能研究[J].含能材料, 2007, 15(1):42—46.
[6]袁桂芳,胡建军,赵文胜,等.含RDX的硝胺丁羟推进剂能量特性研究[J].含能材料, 2002, 10(4):157—160.