Impermeable liner-barrier for propellants containing a high content of carborane burning rate accelerator
- 申请公布号：
- US4744299(A)
- 申请号：
- US19830484104
- 申请日期：
- 1983.04.01
- 申请公布日期：
- 1988.05.17
- 申请人：
- THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY
- 发明人：
- SAYLES, DAVID C.
- 分类号：
- C06B45/12;C08G18/40;C08G18/62;F02K9/34;(IPC1-7):F42B1/00
- 主分类号：
- C06B45/12
- 摘要：
- Disclosed is a liner-barrier system which is impermeable when cured to the high concentrations of carboranyl burning rate accelerator which are incorporated into ultrahigh-burning rate propellants which are being developed for advanced interceptors. The liner-barrier composition, when uncured, comprises a polyvinyl butyral resin coblended with thermosetting resins, such as, phenolic, epoxy etc., that employs triphenylbismuthine as a quick cure catalyst, 4,5-epoxycyclohexylmethyl 4',5'-epoxycyclohexyl carboxylate and polyisocyanate as curative and crosslinking agents to further modify the liner-barrier formulation by reacting with the secondary hydroxyl groups. Further modification of the liner-barrier formulation is achieved by incorporation of aluminum powder to impart additional properties of impermeability. The uncured liner-barrier composition contains from 8.90 to about 10.21 weight percent solids in a solvent blend of isopropyl acetate and isopropyl alcohol which comprises from about 89.79 to about 91.10 percent by weight of the uncured composition.
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