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含能材料  2015 

HTPB基粘结体系中ε-CL-20的晶型转变规律

DOI: 10.11943/j.issn.1006-9941.2015.02.002

Keywords: 六硝基六氮杂异伍兹烷(CL-20) 晶型转变 添加剂 原位XRD

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Abstract:

采用原位X-射线粉末衍射(原位XRD)技术对端羟基聚丁二烯(HTPB)基粘结体系中ε-六硝基六氮杂异伍兹烷(ε-CL-20)的晶型转变行为进行了研究, 探讨了HTPB、甲苯二异氰酸酯(TDI)、葵二酸二辛酯(DOS)、二月桂酸二丁基锡(T-12)、高氯酸铵(AP)、Al等添加剂对CL-20晶型转变的影响。结果表明, 添加剂能够引起ε-CL-20在热刺激作用下的晶型转变的起始温度发生变化, HTPB和TDI能在一定程度上包覆CL-20晶体, T-12作为胶黏的催化剂与HTPB及TDI联用时能加速包覆, 都对ε→γ晶型转变有抑制作用。而DOS与CL-20混合后却促使ε→γ的晶型转变。AP、Al与CL-20属于固固混合, 对ε-CL-20晶体的晶型转变影响不明显。另外, 将粘结体系ε-CL-20在70℃下持续加热60 h后, 发现ε-CL-20晶型未发生转变

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