新型含能增塑剂A16对HTPB的增塑性能  

Plasticization of A16 Energetic Plasticizer to HTPB

作　　者：肖春[1] 刘慧慧[1] 郑保辉[1] 刘长波[2] 苗成才[2] 罗观[1] XIAO Chun;LIU Hui⁃hui;ZHENG Bao⁃hui;LIU Chang⁃bo;MIAO Cheng⁃cai;LUO Guan(Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621900,China;Liming Research Institute of Chemical Industry,Luoyang 471001,China)

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621999 [2]黎明化工研究院,河南洛阳471001

出　　处：《含能材料》2020年第6期552-556,共5页Chinese Journal of Energetic Materials

基　　金：化工材料研究所授权基金。

摘　　要：为了研究新型含能增塑剂(2,2-二硝基丙基)-2-己基癸酸酯(A16)对端羟基聚丁二烯(HTPB)的增塑性能,采用分子动力学方法对HTPB与A16进行了相容性模拟,对增塑比2∶1~1∶1.5、温度30~70℃条件下HTPB/A16和HTPB/DOS体系的表观黏度进行了研究,并测试了两种体系的力学性能。结果表明:HTPB、A16各自分子间作用以范德华力为主,HTPB与A16的溶度参数差值仅为0.004(J·cm^-3)1/2,二者具有非常好的相容性;HTPB/A16体系的表观黏度高于HTPB/DOS体系,但随着增塑剂质量比的提高或温度的提高,两种体系的表观黏度差异减小,当增塑比为1∶1,温度为70℃时,HTPB/A16与HTPB/DOS体系的黏度差仅为60.5 cP,A16与DOS的降黏效果相当;在相同增塑比条件下,HTPB/A16固化胶的拉伸强度和延伸率均比HTPB/DOS固化胶大,HTPB/A16固化胶的拉伸性能优于HTPB/DOS;增塑比为1∶1时,HTPB/A16固化胶的断裂延伸率比HTPB/DOS提高18.6%,模量降低8.6%,A16对HTPB的增塑效率高于DOS。In order to study the plasticizing properties of new energetic plasticizer(2,2‐dinitropyl)‐2‐hexyl decanoate(A16)with Hydroyl‐Terminated Polybutadiene(HTPB),the compatibility of them was simulated by molecular dynamics method.The apparent viscosities and mechanical properties of HTPB/A16 and HTPB/DOS systems at different plasticizing ratios and temperatures were studied and compared.The interaction between HTPB and A16 was dominated by Van der Waals force.The difference between the solubility parameters of HTPB and A16 was only 0.004(J·cm^-3)1/2,indicating good compatibility.The apparent viscosity of HTPB/A16 system was higher than that of HTPB/DOS system.With the increasing plasticier mass ratio or temperature,the difference between the two systems decreased.When the plasticizing ratio was 1∶1 and the temperature was 70℃,the viscosity of HTPB/A16 was only 60.5 cp higher than that of HTPB/DOS,suggesting equivalent reduction effect of A16 and DOS.Under the same plasticizing ratio,both the tensile strength and elongation of HTPB/A16 system were larger than that of HTPB/DOS system.When the plasticizing ratio was 1∶1,the elongation at break of HTPB/A16 was 18.6%higher than that of HTPB/DOS,whereas the modulus was 8.6%lower.

关 键 词：含能增塑剂 增塑性能 相容性 表观黏度 拉伸性能 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]