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[1]李军强,肖啸,刘庆,等.六(2,4,6-三溴苯氧基)环三磷腈对固体推进剂三元乙丙橡胶包覆层性能的影响[J].火炸药学报,2019,42(3):289-294.[doi:10.14077/j.issn.1007-7812.2019.03.014]
 LI Jun-qiang,XIAO Xiao,LIU Qing,et al.Influence of Hexa(2,4,6-tribromophenoxy) cyclotriphosphazene on Properties of EPDM inhibitor for Solid Propellant[J].,2019,42(3):289-294.[doi:10.14077/j.issn.1007-7812.2019.03.014]
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六(2,4,6-三溴苯氧基)环三磷腈对固体推进剂三元乙丙橡胶包覆层性能的影响()
     
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《火炸药学报》[ISSN:1007-7812/CN:61-1310/TJ]

卷:
42卷
期数:
2019年第3期
页码:
289-294
栏目:
出版日期:
2019-06-30

文章信息/Info

Title:
Influence of Hexa(2,4,6-tribromophenoxy) cyclotriphosphazene on Properties of EPDM inhibitor for Solid Propellant
作者:
李军强 肖啸 刘庆 路向辉 刘建利 杨士山
西安近代化学研究所, 陕西 西安 710065
Author(s):
LI Jun-qiang XIAO Xiao LIU Qing LU Xiang-hui LIU Jian-li YANG Shi-shan
Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
关键词:
物理化学六(246-三溴苯氧基)环三磷腈BPCPZ包覆层三元乙丙橡胶EPDM线烧蚀率
Keywords:
physical chemistryhexa(246-tribromophenoxy)cyclotriphosphazeneBPCPZinhibitorethylene propylene diene monomerEPDMlinear ablation rate
分类号:
TJ55;TQ333
DOI:
10.14077/j.issn.1007-7812.2019.03.014
文献标志码:
-
摘要:
为了提高自由装填固体推进剂包覆层的综合性能,制备了不同六(2,4,6-三溴苯氧基)环三磷腈(BPCPZ)含量的三元乙丙橡胶(EPDM)包覆层,分析了BPCPZ含量对包覆层理化性能、硫化特性参数、耐高温和耐烧蚀性能、阻燃性能的影响。结果表明,随着包覆层配方中BPCPZ的质量分数由0增至13.55%,EPDM包覆层胶料的焦烧时间(ts1)未发生明显变化,而正硫化时间(t90)则出现了先升高后降低的趋势;包覆层在20℃时的拉伸强度由3.52 MPa增至6.09 MPa,而延伸率则由750.0%降至328.4%;EPDM包覆层的耐高温和耐烧蚀性能也随着BPCPZ含量的增加而提高,线烧蚀率由0.18 mm/s降至(0.065~0.143)mm/s,800℃时的质量残留率由5.24%最大升至17.5%;当包覆层配方中BPCPZ的质量分数达到3.37%以上时,极限氧指数大于27,包覆层表现出难燃特性。
Abstract:
In order to improve the comprehensive performance of inhibitor of free-loading solid propellant, ethylene propylene diene monomers EPDM inhibitor with different contents of hexa(2,4,6-tribromophenoxy)cyclotriphosphazene (BPCPZ) were prepared. The effects of BPCPZ on the physicochemical properties, curing characteristic parameters, heat-and ablative-resistance and fire-resistance of inhibitor were conducted. The results show that there is no significant change of the scorch time (ts1), whereas the optimum cure time (t90) increases at first and then decreases with increasing the mass fraction of BPCPZ from 0 to 13.55%. The tensile strength (20℃) of inhibitor increased from 3.52 MPa to 6.09 MPa, whereas the elongation (20℃) decreased from 750.0% to 328.4%. The thermostability and ablation resistance of EPDM inhibitor were improved with increasing the mass fraction of BPCPZ, the linear ablation rate reduces from 0.18 mm/s to (0.065-0.143) mm/s and the maximum residual rate at 800℃ increases from 5.24% to 17.5%. The limiting oxygen index is higher than 27 and the inhibitor samples shows high flame retardancy when the mass fraction of BPCPZ is above 3.37%.

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备注/Memo

备注/Memo:
收稿日期:2018-7-25;改回日期:2018-11-21。
基金项目:陆军装备部预研项目(No.301110402)
作者简介:李军强(1979-),男,高级工程师,从事高能推进剂技术研究。E-mail:llijq@sohu.com
通讯作者:杨士山(1977-),男,研究员,从事固体推进剂绝热包覆技术研究。E-mail:358240234@qq.com
更新日期/Last Update: 1900-01-01