Qualification of a New MAPO Source and ERL-510 Curing Agent for Minuteman Stage I UF-2121 Liner.

摘要

*Tris (1-(2 methyl) aziridinyl) phosphine oxide (MAPO) is used as a curing agent in the Minuteman Stage One UF-2121 liner. Thiokol Chemical Corporation/Wasatch Division uses MAPO in the production of UF-2121 liner. Thiokol changes MAPO vendors and, therefore, qualification of the new source MAPO was required. Thiokol prepared specimens from the new source and also specimens from the original source which are to be used as the control material in the 10 year surveillance testing program. The specimens were transferred to Ogden ALC for testing and reporting of the data obtained. This report includes the quality assurance test results for the first through the ninth time testing of the control and special specimens at Ogden ALC (Air Logistics Center). Statistical analysis of the test data showed that the physical properties of the new source compared closely to the old source of UF-2121 liner specimens. In all instances, the mean dara for the control and special specimens are well above the minimum requirements found in TWR-7857 REV A, Thiokol specimen data. Therefore, the capability of the liner from the new source material is expected to perform satisfactorily.