环氧树脂-玻璃微珠多孔复合材料的水声性能

Underwater Acoustic Properties of Epoxy Resin-Glass Microspheres Porous Composites

为提高薄板吸声材料的吸声性能,用改性环氧树脂和空心玻璃微珠等原料合成了25mm厚环氧树脂-玻璃微珠多孔复合材料,在脉冲声管中测试了合成材料试样的声压反射系数和吸声系数,研究了合成工艺参数对其水下声学性能的影响。测试结果表明:环氧树脂-玻璃微珠多孔复合材料是一种良好的水下吸声材料,其吸声性能受到空心玻璃微珠的种类及其含量和固化剂种类等参数的影响。制备了填充多种空心玻璃微珠低频吸声性能良好的环氧树脂-玻璃微珠声学材料。合理地设计实验工艺参数,可以得到水下声学性能更佳的环氧树脂-玻璃微珠多孔复合材料。

The 25 mm thick epoxy resin-glass micropheres porous composites were synthesized from modified epoxy resin and hollow glass microspheres for improving the sound absorption properties of thin plate material. The effect of process parameters on the underwater acoustic properties of epoxy resin-glass micropheres porous composites was studied. The sound reflection coefficient and sound absorption coefficient of epoxy resin-glass micropheres porous composite materials specimen were measured in the sound pulse tube. The experiment results of underwater acoustic tests indicate that the epoxy resin-glass micro-pheres porous composites are an excellent underwater sound absorption material. Underwater acoustic properties of the epoxy resin-glass micropheres porous composite material are affected by the process parameters such as the type and content of hollow glass microspheres, the type of curing agent, et al. Then, epoxy resin-glass mieropheres porous composites with excellent underwater sound absorption properties at low frequency were prepared. Epoxy resin-glass micropheres porous composites of much better underwater acoustic properties can he obtained by regulating the process parameters.