Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Cross-linking Reaction of the Poly butadiene Binder for Composite Propellants
Kiroku YamazakiHarusuke Tokui
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1965 Volume 38 Issue 12 Pages 2174-2178


The cross-linking reactions of carboxy-terminated polybutadiene with tris[1-(2-methyl)aziridinyl] phosphine oxide have been studied in order to obtain an excellent fuel binder of good mechanical properties as well as good combustion characteristics.
The tensile strength and elongation at the break point, as shown by the elastomer studied, were about 10–15 kg./cm.2 and 250–500% respectively. For high tensile modulus of the elastomer, an 100–200% excess of the cross-linking agent over the equivalent ratio was required.
The reaction temperature for cross-linking was lowered to the 50–70°C range by the addition of a suitable accelerator.
The stress-strain curve of the elastomer closely fit the equation for the rubber elasticity theory, and these stress-strain data was in accordance with the measured swelling data.

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