将端羟基聚丁二烯与聚氨酯进行共混改性，提高了聚氨酯基体的表观交联度及推进剂的拉伸强度。
When blend modification of HTPB and PU are done, the apparent crosslinking density of PU matrix in - creases, and the tensile strength of propellant enhances.
将端羟基聚丁二烯与聚氨酯进行共混改性，提高了聚氨酯基体的表观交联度及推进剂的拉伸强度。
When blend modification of HTPB and PU are done, the apparent crosslinking density of PU matrix in - creases, and the tensile strength of propellant enhances.
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