六(4-醛基苯氧基)环三磷腈对三元乙丙包覆层性能的影响
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摘要
以六(4-醛基苯氧基)环三磷腈(HAPCP)为有机填料,研究了其对三元乙丙橡胶(EPDM)包覆层力学性能、耐高温和耐烧蚀性能、阻燃性能以及与推进剂的粘结性能的影响。通过实验结果可以看出,添加HAPCP的EPDM包覆层与推进剂药柱粘接性良好;随着HAPCP添加量的增加,EPDM包覆层的拉伸强度不断增大,而延伸率则随之下降;耐高温和耐烧蚀性能也随着HAPCP添加量的增加而显著提高,线烧蚀率由0. 18 mm/s下降至0. 148～0. 088 mm/s,800℃的残焦量由5. 24%最大可升高至51. 09%;当HAPCP添加量增至4 g/100 g EPDM以上时,EPDM包覆层的极限氧指数大于27%,属难燃材料。
Hexa( 4-aldehydephenoxy) cyclotriphosphazene( HAPCP) is prepared as an organic filling and its influence on EPDM inhibitor,including mechanical properties,heat-and ablative-resistance,flame retardancy and binding properties,are studied. Through experiments on ten formulas,it can be found that EPDM inhibitor appending HAPCP possesses superior binding properties with solid rocket propellant.With increasing content of HAPCP,the tensile strength of EPDM inhibitor shows an upward trend whereas the elongation decreases,the linear ablation rate falls from0. 18 mm·s-1 to 0. 148-0. 088 mm·s-1 and the maximum char yield at 800 oC increases from 5. 24% to 51. 09%. In addition,limiting oxygen index of EPDM inhibitor exceeds 27% when the content of HAPCP is more than 4 g per 100 g EPDM,indicating that EPDM inhibitor can be assigned to nonflammable material.
Hexa( 4-aldehydephenoxy) cyclotriphosphazene( HAPCP) is prepared as an organic filling and its influence on EPDM inhibitor,including mechanical properties,heat-and ablative-resistance,flame retardancy and binding properties,are studied. Through experiments on ten formulas,it can be found that EPDM inhibitor appending HAPCP possesses superior binding properties with solid rocket propellant.With increasing content of HAPCP,the tensile strength of EPDM inhibitor shows an upward trend whereas the elongation decreases,the linear ablation rate falls from0. 18 mm·s-1 to 0. 148-0. 088 mm·s-1 and the maximum char yield at 800 oC increases from 5. 24% to 51. 09%. In addition,limiting oxygen index of EPDM inhibitor exceeds 27% when the content of HAPCP is more than 4 g per 100 g EPDM,indicating that EPDM inhibitor can be assigned to nonflammable material.
引文
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[18]徐应麟，王元宏，夏国梁．高聚物材料的实用阻燃技术[M]．北京:化学工业出版社，1987.
[19]Yoshifumi N,Tadao Y,Yuji T,et al.Flame retardants for resins and flame-retardanted resin compositions containing the same:EP1219677[P].2002-07-03．
[2]侯林法，张春森，周学刚，等．复合固体推进剂[M]．北京:宇航出版社，1994.
[3]阿兰·达文纳斯．固体火箭推进技术[M]．北京:航天工业总公司第三十一研究所，1995.
[4]吴战鹏，张腾，吴德珍，等．低特征信号绝热层及衬层基体材料发展新趋势———聚磷腈[A].2006年中国宇航学会年会论文集[C]．北京:中国宇航学会，2006:241-247.
[5]赵凤起，王新华，鲍冠苓，等．白炭黑对推进剂的硅橡胶包覆层材料性能的影响[J]．含能材料，1997,5(2):82-86.
[6]路向辉，杨士山，刘晨，等．填料对三元乙丙橡胶包覆层性能影响研究[J]．化工新型材料，2013,41(10):131-132.
[7]李冬，陈聍，任黎．三元乙丙基固体推进剂包覆层拉伸性能影响因素研究[J]．化工新型材料，2011,39(9):98-99.
[8]Agrawal J P. Genesis of development of inhibition technology for rocket propellants and recent work[J].Sci Ind Res,1992,51:375-382.
[9]Schreuder-Gibson H L. Adhesion of solid rocket materials[J].Rubber World,1990,11:928-931.
[10]赵凤起．国外无(少)烟聚氨酯包覆层研制情况[J]．火炸药学报，1993,16(1):15.
[11]Weil E.Melamine phosphates and pyrophosphates in flame-retardant coatings:Old products with new potential[J]. Journal of Coatings Technology,1994,66(839):75-82.
[12]赵凤起，王新华．应用于绝热包覆层中的填料及其选用的某些规律初探[J]．火炸药学报，1994,17(1):34-38.
[13]肖啸，甘孝贤，刘庆，等．六(4-醛基苯氧基)环三磷腈的合成、表征及其热性能研究[J]．化学推进剂与高分子材料，2011,9(5):72-75.
[14]Meredith P L. Flame retardant polymeric compositions containin ghalogen substituted hexakis-(substitutedphenoxy)cyclotriphosphazene:USP4029634[P].1977-06-14.
[15]Arlin L W,Steven G O,Toshiki F,et al.Synthesis and characterization of methionine-and cysteine-substituted phosphazene[J]. Macromolecules,2010,43(12):5205-5210.
[16]Ji Y C,Heung J J,Man J H. A melt processable ethynylphenoxy group substituted cyclotrphosphazene:Synthesis and thermal polymerization[J].Bull Korean Chem Soc,1995,16(7):675-677.
[17]Lu S Yu,Hamerton I.Recent developments in the chemistry of halogen free flame retardant polymers[J]. Prog Polym Sci,2002,27:1661-1712.
[18]徐应麟，王元宏，夏国梁．高聚物材料的实用阻燃技术[M]．北京:化学工业出版社，1987.
[19]Yoshifumi N,Tadao Y,Yuji T,et al.Flame retardants for resins and flame-retardanted resin compositions containing the same:EP1219677[P].2002-07-03．