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由山西省化工研究所研制的JA-2浇注型聚氨酯透声橡胶(简称JA-2橡胶),是以四氢呋喃-环氧丙烷共聚醚二醇为基础的新型合成材料。它除了具有一般聚氨酯橡胶的特点外,还具有良好的声学特性。用它试制的水声基阵及换能器,已被成功地应用于水下声系统。
JA-2 cast polyurethane translucent rubber (JA-2 rubber) developed by Shanxi Institute of Chemical Industry is a new type of synthetic material based on tetrahydrofuran-propylene oxide copolyether glycol. In addition to its general characteristics of polyurethane rubber, but also has good acoustic properties. The underwater acoustic array and transducers trial-produced by it have been successfully applied to underwater acoustic systems.