Tensile strain rate effect in mechanical properties of dummy HTPB propellants

Journal Article · Tue Oct 05 00:00:00 EDT 1993 · Journal of Applied Polymer Science; (United States)

DOI:https://doi.org/10.1002/app.1993.070500108· OSTI ID:5958666

Chung, H L; Kawata, K; Itabashi, M ^[1]

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1. Science Univ. of Tokyo, Chiba (Japan). Dept. of Materials Science and Technology

The tensile strain rate effect in tensile strength and elongation at break for a series of filled dummy hydroxy-terminated polybutadiene (HTPB) propellant binders was studied. The data were obtained at various tensile strain rates from 10[sup [minus]4] to 10[sup [minus]1] s[sup [minus]1] on two types of specimens at room temperature. The high velocity ductility behavior, which is qualitatively similar to those of unfilled elastomers, was revealed. This means that the breaking strain increases markedly at elevated strain rates. For Bukkon-type and rod-shaped specimens, test results are consistent with each other. The fact that the increased filled solids level leads to a decreased breaking elongation capability and an increased tensile strength was obviously found.

• OSTI ID: 5958666
• Journal Information: Journal of Applied Polymer Science; (United States), Vol. 50:1; ISSN 0021-8995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
MECHANICAL PROPERTIES
POLYMERS
PROPELLANTS
TENSILE PROPERTIES
MATERIALS
360603* - Materials- Properties