|本期目录/Table of Contents|

[1]刘晋湘,梁蓓,朱立勋,等.Ⅰ类AP初始缺陷对丁羟推进剂力学性能的影响[J].火炸药学报,2018,41(3):273-277.[doi:10.14077/j.issn.1007-7812.2018.03.010]
 LIU Jin-xiang,LIANG Bei,ZHU Li-xun,et al.Effect of Initial Defect of Type I AP on the Mechanical Properties of HTPB Propellant[J].,2018,41(3):273-277.[doi:10.14077/j.issn.1007-7812.2018.03.010]
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Ⅰ类AP初始缺陷对丁羟推进剂力学性能的影响()
     
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《火炸药学报》[ISSN:1007-7812/CN:61-1310/TJ]

卷:
41卷
期数:
2018年第3期
页码:
273-277
栏目:
出版日期:
2018-06-29

文章信息/Info

Title:
Effect of Initial Defect of Type I AP on the Mechanical Properties of HTPB Propellant
作者:
刘晋湘 梁蓓 朱立勋 张宁 闫卓
1. 西安北方惠安化学工业有限公司, 陕西 西安 710302;
2. 北京理工大学材料学院, 北京 100081;
3. 南京理工大学化工学院, 江苏 南京 210094
Author(s):
LIU Jin-xiang LIANG Bei ZHU Li-xun ZHANG Ning YAN Zhuo
1. Xi’an North Huian Chemical Industries Co. Ltd., Xi’an 710302, China;
2. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;
3. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
关键词:
丁羟推进剂HTPB高氯酸铵(AP)穿晶断裂力学性能
Keywords:
hydroxyl-terminated polybutadiene propellantHTPBammonium perchlorate(AP)transgranular fracturemechanical properties
分类号:
TJ55;V512
DOI:
10.14077/j.issn.1007-7812.2018.03.010
文献标志码:
-
摘要:
分别以两种Ⅰ类高氯酸铵(AP)为氧化剂,采用立式混合及真空喷淋浇注工艺制备了两种丁羟推进剂(HTPB);采用扫描电镜(SEM)研究了AP的微观形貌及HTPB推进剂的拉伸断面;探讨了推进剂在拉伸过程中的破坏机理;考察了不同形貌的AP在常温(20℃)和低温(-40℃)下对HTPB推进剂单向拉伸力学性能的影响。结果表明,有初始微观形貌缺陷的Ⅰ类AP局部有微裂纹或明显的突出点,且该类AP所制备的推进剂“脱湿”现象严重;拉伸断面出现AP的穿晶断裂现象,使得推进剂在常温(20℃)下的抗拉强度由0.99 MPa降至0.88 MPa,延伸率由48.2%降至36.6%;低温(-40℃)下的抗拉强度由2.86 MPa降至2.32 MPa,延伸率由62.5%降至23.5%。
Abstract:
Two kinds of hydroxyl-terminated polybutadiene(HTPB) propellants were prepared by vertical mixing and vacuum spraying cast technology using type I ammonium perchlorate (AP) as oxidant. The micromorphology of type I AP and the tensile fracture surface of HTPB propellants were studied by scanning electron microscopy (SEM). The damage mechanism of the propellant in the stretching process was discussed and the effects of AP with different morphology on the uniaxial tensile mechanical properties of HTPB propellant were investigated at room temperature (20℃) and low temperature (-40℃). The results show that the type I AP with initial micromorphology defects has microcracks or obvious protrusion points, and the "filler dewetting" phenomenon of propellant prepared by this kind of AP is serious. The transgranular fracture phenomenon of AP occurs on tensile fracture surface. Thus, at room temperature (20℃), the tensile strength of propellant is reduced from 0.99 MPa to 0.88 MPa and the elongation is reduced from 48.2% to 36.6%, and at low temperature (-40℃),the tensile strength is reduced from 2.86 MPa to 2.32 MPa and the elongation is reduced from 62.5% to 23.5%.

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备注/Memo

备注/Memo:
收稿日期:2018-01-29;改回日期:2018-04-19。
基金项目:国家自然科学基金(No.51506093)
作者简介:刘晋湘(1963-),男,高级工程师,从事复合固体推进剂性能测试。E-mail:zhangning09106@163.com
更新日期/Last Update: 1900-01-01