少烟复合改性双基（CMDB）推进剂力学性能研究  

A STUDY ON MECHANICAL PROPERTIES OF REDUCED SMOKE COMPOSITE MODIFIED DOUBLE-BASE PROPELLANT

作　　者：冯增国[1] 侯竹林[1] 王恩普[1] 

机构地区：[1]北京理工大学化工与材料学院

出　　处：《推进技术》1994年第6期83-87,共5页Journal of Propulsion Technology

摘　　要：在混合硝酸酯ＮＧ／ＢＴＴＮ（ＤＥＧＮ）＝１和溶棉比ＮＧ＋ＢＴＴＮ（ＤＥＧＮ／ＮＣ＋ＰＥＧ＝３．５～４．０的少烟复合改性双基推进剂配方中，选择聚乙二醇（ＰＥＧ）预聚物取代部分ＮＣ，研究了其含量和分子量变化对力学性能的影响。发现当ＰＥＧ含量为４％，ＮＣ为７％时，在两种混合增塑剂中都可使－４０℃下最大延伸率超过４０％。从溶涨实验中观察到，随着配方中ＰＥＧ含量增加，尽管［ＮＣＯ］／［ＯＨ］值也增加，但相对交联点密度降低，因而改善了力学性能。n compositions of reduced smoke composite modified double-base propellant (CMDB) with a mixture of nitrate ester NG/BTTN (DEGN)=1 and a ratio of . solvent to nitrocellulose NG+BTTN (DEGN ) /NC + PEG =3.5～4.0,polyethylene glycol (PEG) has been chosen as a prepolymer to substitute for a part of nitrocellulose (NC) to investigate the effects of its varying content and molecular weight on propellant's mechanical properties. In both of mixing plasticizers, the maximum elogation at -40℃ was noticed to exceed 40% when the propellant contains 4% PEG and 7% NC. It was observed in the swelling experiment that although the value of [NCO]/[OH] increases as increasing the PEG content,the relative cross-linking density decreases so as to improve the mechanical properties.

关 键 词：双基推进剂 少烟推进剂 拉伸强度 力学性能 

分 类 号：V512.2[航空宇航科学与技术—航空宇航推进理论与工程]