溶聚丁苯橡胶分子结构对其声学性能的影响研究

丁苯橡胶(SBR)是常用的水下吸声胶种之一,通过研究溶聚丁苯橡胶(SSBR)分子链中苯乙烯含量和环氧化对其水压下吸声性能的影响,显示SSBR样品吸声系数随测试压力变化不大。在各测试压力下,低苯乙烯含量的SSBR样品吸声性能较差,随着链中苯乙烯含量的提高,吸声性能有明显的改善;极性化改性处理SSBR能够有效提升其加压状态的吸声性能,在极化基团质量分数达到10%时,吸声性能有明显提升。 

Effect of Molecular Structure of Solution Polymerized Styrene Butadiene Rubber on Acoustic Properties

Styrene butadiene rubber(SBR) is one of the commonly used underwater sound absorption rubber. Here were studied the effects of styrene content and polarizability of SSBR molecular structure on its sound absorption properties. The results of sound absorption test showed that the sound-absorbing performance changed little with the increase of test pressure. The sound absorption performance of SSBR with lower styrene content was poor under various test pressures. With the increase of styrene content in the chain, the sound absorption performance was obviously improved. Polarization modification of SSBR could effectively improve its sound absorption under pressure. When the mass fraction of polarizing group reached 10%, the sound absorption performance was obviously improved.